* [PATCH v14 00/56] Add DELETE_BUF ioctl
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Unlike when resolution change on keyframes, dynamic resolution change
on inter frames doesn't allow to do a stream off/on sequence because
it is need to keep all previous references alive to decode inter frames.
This constraint have two main problems:
- more memory consumption.
- more buffers in use.
To solve these issue this series introduce DELETE_BUFS ioctl and remove
the 32 buffers limit per queue.
VP9 conformance tests using fluster give a score of 210/305.
The 20 resize inter tests (vp90-2-21-resize_inter_* files) are ok
but require to use postprocessor.
Kernel branch is available here:
https://gitlab.collabora.com/benjamin.gaignard/for-upstream/-/commits/remove_vb2_queue_limit_v14
GStreamer branch to use DELETE_BUF ioctl and testing dynamic resolution
change is here:
https://gitlab.freedesktop.org/benjamin.gaignard1/gstreamer/-/commits/VP9_drc
changes in version 14:
- Add max_num_buffers fields in v4l2_create_buffers32 structure and copy
it from/to user data.
- Fix patch 44 commit header.
- Fix v4l_print_create_buffers() log.
changes in version 13:
- Fix typo and wording in commits messages.
- Only apply V4L2_BUF_CAP_SUPPORTS_SET_MAX_BUFS on createbufs ioctl
- Fix queue setup test in test-drivers
changes in version 12:
- Change flag name to V4L2_BUF_CAP_SUPPORTS_SET_MAX_BUFS.
- Rework some commits message.
- Change vb2_queue_or_prepare_buf() prototype.
- Rework patches where 'min_buffers_needed' was badly used.
Benjamin Gaignard (56):
media: videobuf2: Rename offset parameter
media: videobuf2: Rework offset 'cookie' encoding pattern
media: videobuf2: Stop spamming kernel log with all queue counter
media: videobuf2: Use vb2_buffer instead of index
media: videobuf2: Access vb2_queue bufs array through helper functions
media: videobuf2: Remove duplicated index vs q->num_buffers check
media: videobuf2: Add helper to get queue number of buffers
media: videobuf2: Use vb2_get_num_buffers() helper
media: amphion: Use vb2_get_buffer() instead of directly access to
buffers array
media: amphion: Stop direct calls to queue num_buffers field
media: mediatek: jpeg: Use vb2_get_buffer() instead of directly access
to buffers array
media: mediatek: vdec: Remove useless loop
media: mediatek: vcodec: Stop direct calls to queue num_buffers field
media: sti: hva: Use vb2_get_buffer() instead of directly access to
buffers array
media: visl: Use vb2_get_buffer() instead of directly access to
buffers array
media: atomisp: Use vb2_get_buffer() instead of directly access to
buffers array
media: atomisp: Stop direct calls to queue num_buffers field
media: dvb-core: Use vb2_get_buffer() instead of directly access to
buffers array
media: dvb-core: Do not initialize twice queue num_buffer field
media: dvb-frontends: rtl2832: Stop direct calls to queue num_buffers
field
media: pci: dt3155: Remove useless check
media: pci: tw686x: Stop direct calls to queue num_buffers field
media: pci: cx18: Stop direct calls to queue num_buffers field
media: pci: netup_unidvb: Stop direct calls to queue num_buffers field
media: pci: tw68: Stop direct calls to queue num_buffers field
media: i2c: video-i2c: Stop direct calls to queue num_buffers field
media: coda: Stop direct calls to queue num_buffers field
media: nxp: Stop direct calls to queue num_buffers field
media: verisilicon: Stop direct calls to queue num_buffers field
media: test-drivers: Stop direct calls to queue num_buffers field
media: imx: Stop direct calls to queue num_buffers field
media: meson: vdec: Stop direct calls to queue num_buffers field
touchscreen: sur40: Stop direct calls to queue num_buffers field
sample: v4l: Stop direct calls to queue num_buffers field
media: cedrus: Stop direct calls to queue num_buffers field
media: nuvoton: Stop direct calls to queue num_buffers field
media: renesas: Stop direct calls to queue num_buffers field
media: ti: Stop direct calls to queue num_buffers field
media: usb: airspy: Stop direct calls to queue num_buffers field
media: usb: cx231xx: Stop direct calls to queue num_buffers field
media: usb: hackrf: Stop direct calls to queue num_buffers field
media: usb: usbtv: Stop direct calls to queue num_buffers field
media: videobuf2: Be more flexible on the number of queue stored
buffers
media: core: Report the maximum possible number of buffers for the
queue
media: test-drivers: vivid: Increase max supported buffers for capture
queues
media: test-drivers: vicodec: Increase max supported capture queue
buffers
media: verisilicon: Refactor postprocessor to store more buffers
media: verisilicon: Store chroma and motion vectors offset
media: verisilicon: g2: Use common helpers to compute chroma and mv
offsets
media: verisilicon: vp9: Allow to change resolution while streaming
media: core: Rework how create_buf index returned value is computed
media: core: Add bitmap manage bufs array entries
media: core: Free range of buffers
media: v4l2: Add DELETE_BUFS ioctl
media: v4l2: Add mem2mem helpers for DELETE_BUFS ioctl
media: test-drivers: Use helper for DELETE_BUFS ioctl
.../userspace-api/media/v4l/user-func.rst | 1 +
.../media/v4l/vidioc-create-bufs.rst | 8 +-
.../media/v4l/vidioc-delete-bufs.rst | 80 +++
.../media/v4l/vidioc-reqbufs.rst | 2 +
drivers/input/touchscreen/sur40.c | 5 +-
.../media/common/videobuf2/videobuf2-core.c | 569 +++++++++++-------
.../media/common/videobuf2/videobuf2-v4l2.c | 125 ++--
drivers/media/dvb-core/dvb_vb2.c | 17 +-
drivers/media/dvb-frontends/rtl2832_sdr.c | 5 +-
drivers/media/i2c/video-i2c.c | 5 +-
drivers/media/pci/cx18/cx18-streams.c | 5 +-
drivers/media/pci/dt3155/dt3155.c | 2 -
.../pci/netup_unidvb/netup_unidvb_core.c | 5 +-
drivers/media/pci/tw68/tw68-video.c | 4 +-
drivers/media/pci/tw686x/tw686x-video.c | 5 +-
drivers/media/platform/amphion/vpu_dbg.c | 30 +-
drivers/media/platform/amphion/vpu_v4l2.c | 4 +-
.../media/platform/chips-media/coda-common.c | 2 +-
.../platform/mediatek/jpeg/mtk_jpeg_core.c | 7 +-
.../vcodec/decoder/vdec/vdec_vp9_req_lat_if.c | 9 +-
.../mediatek/vcodec/encoder/mtk_vcodec_enc.c | 2 +-
drivers/media/platform/nuvoton/npcm-video.c | 2 +-
drivers/media/platform/nxp/imx7-media-csi.c | 7 +-
drivers/media/platform/renesas/rcar_drif.c | 5 +-
drivers/media/platform/st/sti/hva/hva-v4l2.c | 9 +-
.../media/platform/ti/am437x/am437x-vpfe.c | 5 +-
drivers/media/platform/ti/cal/cal-video.c | 5 +-
.../media/platform/ti/davinci/vpif_capture.c | 5 +-
.../media/platform/ti/davinci/vpif_display.c | 5 +-
drivers/media/platform/ti/omap/omap_vout.c | 5 +-
drivers/media/platform/verisilicon/hantro.h | 9 +-
.../media/platform/verisilicon/hantro_drv.c | 5 +-
.../media/platform/verisilicon/hantro_g2.c | 14 +
.../platform/verisilicon/hantro_g2_hevc_dec.c | 18 +-
.../platform/verisilicon/hantro_g2_vp9_dec.c | 28 +-
.../media/platform/verisilicon/hantro_hw.h | 7 +-
.../platform/verisilicon/hantro_postproc.c | 93 ++-
.../media/platform/verisilicon/hantro_v4l2.c | 27 +-
.../media/test-drivers/vicodec/vicodec-core.c | 3 +
drivers/media/test-drivers/vim2m.c | 2 +
.../media/test-drivers/vimc/vimc-capture.c | 2 +
drivers/media/test-drivers/visl/visl-dec.c | 32 +-
drivers/media/test-drivers/visl/visl-video.c | 2 +
drivers/media/test-drivers/vivid/vivid-core.c | 21 +
.../media/test-drivers/vivid/vivid-meta-cap.c | 3 -
.../media/test-drivers/vivid/vivid-meta-out.c | 5 +-
.../test-drivers/vivid/vivid-touch-cap.c | 5 +-
.../media/test-drivers/vivid/vivid-vbi-cap.c | 3 -
.../media/test-drivers/vivid/vivid-vbi-out.c | 3 -
.../media/test-drivers/vivid/vivid-vid-cap.c | 3 -
.../media/test-drivers/vivid/vivid-vid-out.c | 5 +-
drivers/media/usb/airspy/airspy.c | 5 +-
drivers/media/usb/cx231xx/cx231xx-417.c | 5 +-
drivers/media/usb/cx231xx/cx231xx-video.c | 5 +-
drivers/media/usb/hackrf/hackrf.c | 5 +-
drivers/media/usb/usbtv/usbtv-video.c | 5 +-
drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 9 +-
drivers/media/v4l2-core/v4l2-dev.c | 1 +
drivers/media/v4l2-core/v4l2-ioctl.c | 21 +-
drivers/media/v4l2-core/v4l2-mem2mem.c | 20 +
.../staging/media/atomisp/pci/atomisp_ioctl.c | 4 +-
drivers/staging/media/imx/imx-media-capture.c | 7 +-
drivers/staging/media/meson/vdec/vdec.c | 13 +-
.../staging/media/sunxi/cedrus/cedrus_h264.c | 9 +-
.../staging/media/sunxi/cedrus/cedrus_h265.c | 9 +-
include/media/v4l2-ioctl.h | 4 +
include/media/v4l2-mem2mem.h | 12 +
include/media/videobuf2-core.h | 65 +-
include/media/videobuf2-v4l2.h | 13 +
include/uapi/linux/videodev2.h | 24 +-
samples/v4l/v4l2-pci-skeleton.c | 5 +-
71 files changed, 998 insertions(+), 473 deletions(-)
create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
--
2.39.2
^ permalink raw reply [flat|nested] 399+ messages in thread
* [PATCH v14 00/56] Add DELETE_BUF ioctl
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Unlike when resolution change on keyframes, dynamic resolution change
on inter frames doesn't allow to do a stream off/on sequence because
it is need to keep all previous references alive to decode inter frames.
This constraint have two main problems:
- more memory consumption.
- more buffers in use.
To solve these issue this series introduce DELETE_BUFS ioctl and remove
the 32 buffers limit per queue.
VP9 conformance tests using fluster give a score of 210/305.
The 20 resize inter tests (vp90-2-21-resize_inter_* files) are ok
but require to use postprocessor.
Kernel branch is available here:
https://gitlab.collabora.com/benjamin.gaignard/for-upstream/-/commits/remove_vb2_queue_limit_v14
GStreamer branch to use DELETE_BUF ioctl and testing dynamic resolution
change is here:
https://gitlab.freedesktop.org/benjamin.gaignard1/gstreamer/-/commits/VP9_drc
changes in version 14:
- Add max_num_buffers fields in v4l2_create_buffers32 structure and copy
it from/to user data.
- Fix patch 44 commit header.
- Fix v4l_print_create_buffers() log.
changes in version 13:
- Fix typo and wording in commits messages.
- Only apply V4L2_BUF_CAP_SUPPORTS_SET_MAX_BUFS on createbufs ioctl
- Fix queue setup test in test-drivers
changes in version 12:
- Change flag name to V4L2_BUF_CAP_SUPPORTS_SET_MAX_BUFS.
- Rework some commits message.
- Change vb2_queue_or_prepare_buf() prototype.
- Rework patches where 'min_buffers_needed' was badly used.
Benjamin Gaignard (56):
media: videobuf2: Rename offset parameter
media: videobuf2: Rework offset 'cookie' encoding pattern
media: videobuf2: Stop spamming kernel log with all queue counter
media: videobuf2: Use vb2_buffer instead of index
media: videobuf2: Access vb2_queue bufs array through helper functions
media: videobuf2: Remove duplicated index vs q->num_buffers check
media: videobuf2: Add helper to get queue number of buffers
media: videobuf2: Use vb2_get_num_buffers() helper
media: amphion: Use vb2_get_buffer() instead of directly access to
buffers array
media: amphion: Stop direct calls to queue num_buffers field
media: mediatek: jpeg: Use vb2_get_buffer() instead of directly access
to buffers array
media: mediatek: vdec: Remove useless loop
media: mediatek: vcodec: Stop direct calls to queue num_buffers field
media: sti: hva: Use vb2_get_buffer() instead of directly access to
buffers array
media: visl: Use vb2_get_buffer() instead of directly access to
buffers array
media: atomisp: Use vb2_get_buffer() instead of directly access to
buffers array
media: atomisp: Stop direct calls to queue num_buffers field
media: dvb-core: Use vb2_get_buffer() instead of directly access to
buffers array
media: dvb-core: Do not initialize twice queue num_buffer field
media: dvb-frontends: rtl2832: Stop direct calls to queue num_buffers
field
media: pci: dt3155: Remove useless check
media: pci: tw686x: Stop direct calls to queue num_buffers field
media: pci: cx18: Stop direct calls to queue num_buffers field
media: pci: netup_unidvb: Stop direct calls to queue num_buffers field
media: pci: tw68: Stop direct calls to queue num_buffers field
media: i2c: video-i2c: Stop direct calls to queue num_buffers field
media: coda: Stop direct calls to queue num_buffers field
media: nxp: Stop direct calls to queue num_buffers field
media: verisilicon: Stop direct calls to queue num_buffers field
media: test-drivers: Stop direct calls to queue num_buffers field
media: imx: Stop direct calls to queue num_buffers field
media: meson: vdec: Stop direct calls to queue num_buffers field
touchscreen: sur40: Stop direct calls to queue num_buffers field
sample: v4l: Stop direct calls to queue num_buffers field
media: cedrus: Stop direct calls to queue num_buffers field
media: nuvoton: Stop direct calls to queue num_buffers field
media: renesas: Stop direct calls to queue num_buffers field
media: ti: Stop direct calls to queue num_buffers field
media: usb: airspy: Stop direct calls to queue num_buffers field
media: usb: cx231xx: Stop direct calls to queue num_buffers field
media: usb: hackrf: Stop direct calls to queue num_buffers field
media: usb: usbtv: Stop direct calls to queue num_buffers field
media: videobuf2: Be more flexible on the number of queue stored
buffers
media: core: Report the maximum possible number of buffers for the
queue
media: test-drivers: vivid: Increase max supported buffers for capture
queues
media: test-drivers: vicodec: Increase max supported capture queue
buffers
media: verisilicon: Refactor postprocessor to store more buffers
media: verisilicon: Store chroma and motion vectors offset
media: verisilicon: g2: Use common helpers to compute chroma and mv
offsets
media: verisilicon: vp9: Allow to change resolution while streaming
media: core: Rework how create_buf index returned value is computed
media: core: Add bitmap manage bufs array entries
media: core: Free range of buffers
media: v4l2: Add DELETE_BUFS ioctl
media: v4l2: Add mem2mem helpers for DELETE_BUFS ioctl
media: test-drivers: Use helper for DELETE_BUFS ioctl
.../userspace-api/media/v4l/user-func.rst | 1 +
.../media/v4l/vidioc-create-bufs.rst | 8 +-
.../media/v4l/vidioc-delete-bufs.rst | 80 +++
.../media/v4l/vidioc-reqbufs.rst | 2 +
drivers/input/touchscreen/sur40.c | 5 +-
.../media/common/videobuf2/videobuf2-core.c | 569 +++++++++++-------
.../media/common/videobuf2/videobuf2-v4l2.c | 125 ++--
drivers/media/dvb-core/dvb_vb2.c | 17 +-
drivers/media/dvb-frontends/rtl2832_sdr.c | 5 +-
drivers/media/i2c/video-i2c.c | 5 +-
drivers/media/pci/cx18/cx18-streams.c | 5 +-
drivers/media/pci/dt3155/dt3155.c | 2 -
.../pci/netup_unidvb/netup_unidvb_core.c | 5 +-
drivers/media/pci/tw68/tw68-video.c | 4 +-
drivers/media/pci/tw686x/tw686x-video.c | 5 +-
drivers/media/platform/amphion/vpu_dbg.c | 30 +-
drivers/media/platform/amphion/vpu_v4l2.c | 4 +-
.../media/platform/chips-media/coda-common.c | 2 +-
.../platform/mediatek/jpeg/mtk_jpeg_core.c | 7 +-
.../vcodec/decoder/vdec/vdec_vp9_req_lat_if.c | 9 +-
.../mediatek/vcodec/encoder/mtk_vcodec_enc.c | 2 +-
drivers/media/platform/nuvoton/npcm-video.c | 2 +-
drivers/media/platform/nxp/imx7-media-csi.c | 7 +-
drivers/media/platform/renesas/rcar_drif.c | 5 +-
drivers/media/platform/st/sti/hva/hva-v4l2.c | 9 +-
.../media/platform/ti/am437x/am437x-vpfe.c | 5 +-
drivers/media/platform/ti/cal/cal-video.c | 5 +-
.../media/platform/ti/davinci/vpif_capture.c | 5 +-
.../media/platform/ti/davinci/vpif_display.c | 5 +-
drivers/media/platform/ti/omap/omap_vout.c | 5 +-
drivers/media/platform/verisilicon/hantro.h | 9 +-
.../media/platform/verisilicon/hantro_drv.c | 5 +-
.../media/platform/verisilicon/hantro_g2.c | 14 +
.../platform/verisilicon/hantro_g2_hevc_dec.c | 18 +-
.../platform/verisilicon/hantro_g2_vp9_dec.c | 28 +-
.../media/platform/verisilicon/hantro_hw.h | 7 +-
.../platform/verisilicon/hantro_postproc.c | 93 ++-
.../media/platform/verisilicon/hantro_v4l2.c | 27 +-
.../media/test-drivers/vicodec/vicodec-core.c | 3 +
drivers/media/test-drivers/vim2m.c | 2 +
.../media/test-drivers/vimc/vimc-capture.c | 2 +
drivers/media/test-drivers/visl/visl-dec.c | 32 +-
drivers/media/test-drivers/visl/visl-video.c | 2 +
drivers/media/test-drivers/vivid/vivid-core.c | 21 +
.../media/test-drivers/vivid/vivid-meta-cap.c | 3 -
.../media/test-drivers/vivid/vivid-meta-out.c | 5 +-
.../test-drivers/vivid/vivid-touch-cap.c | 5 +-
.../media/test-drivers/vivid/vivid-vbi-cap.c | 3 -
.../media/test-drivers/vivid/vivid-vbi-out.c | 3 -
.../media/test-drivers/vivid/vivid-vid-cap.c | 3 -
.../media/test-drivers/vivid/vivid-vid-out.c | 5 +-
drivers/media/usb/airspy/airspy.c | 5 +-
drivers/media/usb/cx231xx/cx231xx-417.c | 5 +-
drivers/media/usb/cx231xx/cx231xx-video.c | 5 +-
drivers/media/usb/hackrf/hackrf.c | 5 +-
drivers/media/usb/usbtv/usbtv-video.c | 5 +-
drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 9 +-
drivers/media/v4l2-core/v4l2-dev.c | 1 +
drivers/media/v4l2-core/v4l2-ioctl.c | 21 +-
drivers/media/v4l2-core/v4l2-mem2mem.c | 20 +
.../staging/media/atomisp/pci/atomisp_ioctl.c | 4 +-
drivers/staging/media/imx/imx-media-capture.c | 7 +-
drivers/staging/media/meson/vdec/vdec.c | 13 +-
.../staging/media/sunxi/cedrus/cedrus_h264.c | 9 +-
.../staging/media/sunxi/cedrus/cedrus_h265.c | 9 +-
include/media/v4l2-ioctl.h | 4 +
include/media/v4l2-mem2mem.h | 12 +
include/media/videobuf2-core.h | 65 +-
include/media/videobuf2-v4l2.h | 13 +
include/uapi/linux/videodev2.h | 24 +-
samples/v4l/v4l2-pci-skeleton.c | 5 +-
71 files changed, 998 insertions(+), 473 deletions(-)
create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* [PATCH v14 00/56] Add DELETE_BUF ioctl
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Unlike when resolution change on keyframes, dynamic resolution change
on inter frames doesn't allow to do a stream off/on sequence because
it is need to keep all previous references alive to decode inter frames.
This constraint have two main problems:
- more memory consumption.
- more buffers in use.
To solve these issue this series introduce DELETE_BUFS ioctl and remove
the 32 buffers limit per queue.
VP9 conformance tests using fluster give a score of 210/305.
The 20 resize inter tests (vp90-2-21-resize_inter_* files) are ok
but require to use postprocessor.
Kernel branch is available here:
https://gitlab.collabora.com/benjamin.gaignard/for-upstream/-/commits/remove_vb2_queue_limit_v14
GStreamer branch to use DELETE_BUF ioctl and testing dynamic resolution
change is here:
https://gitlab.freedesktop.org/benjamin.gaignard1/gstreamer/-/commits/VP9_drc
changes in version 14:
- Add max_num_buffers fields in v4l2_create_buffers32 structure and copy
it from/to user data.
- Fix patch 44 commit header.
- Fix v4l_print_create_buffers() log.
changes in version 13:
- Fix typo and wording in commits messages.
- Only apply V4L2_BUF_CAP_SUPPORTS_SET_MAX_BUFS on createbufs ioctl
- Fix queue setup test in test-drivers
changes in version 12:
- Change flag name to V4L2_BUF_CAP_SUPPORTS_SET_MAX_BUFS.
- Rework some commits message.
- Change vb2_queue_or_prepare_buf() prototype.
- Rework patches where 'min_buffers_needed' was badly used.
Benjamin Gaignard (56):
media: videobuf2: Rename offset parameter
media: videobuf2: Rework offset 'cookie' encoding pattern
media: videobuf2: Stop spamming kernel log with all queue counter
media: videobuf2: Use vb2_buffer instead of index
media: videobuf2: Access vb2_queue bufs array through helper functions
media: videobuf2: Remove duplicated index vs q->num_buffers check
media: videobuf2: Add helper to get queue number of buffers
media: videobuf2: Use vb2_get_num_buffers() helper
media: amphion: Use vb2_get_buffer() instead of directly access to
buffers array
media: amphion: Stop direct calls to queue num_buffers field
media: mediatek: jpeg: Use vb2_get_buffer() instead of directly access
to buffers array
media: mediatek: vdec: Remove useless loop
media: mediatek: vcodec: Stop direct calls to queue num_buffers field
media: sti: hva: Use vb2_get_buffer() instead of directly access to
buffers array
media: visl: Use vb2_get_buffer() instead of directly access to
buffers array
media: atomisp: Use vb2_get_buffer() instead of directly access to
buffers array
media: atomisp: Stop direct calls to queue num_buffers field
media: dvb-core: Use vb2_get_buffer() instead of directly access to
buffers array
media: dvb-core: Do not initialize twice queue num_buffer field
media: dvb-frontends: rtl2832: Stop direct calls to queue num_buffers
field
media: pci: dt3155: Remove useless check
media: pci: tw686x: Stop direct calls to queue num_buffers field
media: pci: cx18: Stop direct calls to queue num_buffers field
media: pci: netup_unidvb: Stop direct calls to queue num_buffers field
media: pci: tw68: Stop direct calls to queue num_buffers field
media: i2c: video-i2c: Stop direct calls to queue num_buffers field
media: coda: Stop direct calls to queue num_buffers field
media: nxp: Stop direct calls to queue num_buffers field
media: verisilicon: Stop direct calls to queue num_buffers field
media: test-drivers: Stop direct calls to queue num_buffers field
media: imx: Stop direct calls to queue num_buffers field
media: meson: vdec: Stop direct calls to queue num_buffers field
touchscreen: sur40: Stop direct calls to queue num_buffers field
sample: v4l: Stop direct calls to queue num_buffers field
media: cedrus: Stop direct calls to queue num_buffers field
media: nuvoton: Stop direct calls to queue num_buffers field
media: renesas: Stop direct calls to queue num_buffers field
media: ti: Stop direct calls to queue num_buffers field
media: usb: airspy: Stop direct calls to queue num_buffers field
media: usb: cx231xx: Stop direct calls to queue num_buffers field
media: usb: hackrf: Stop direct calls to queue num_buffers field
media: usb: usbtv: Stop direct calls to queue num_buffers field
media: videobuf2: Be more flexible on the number of queue stored
buffers
media: core: Report the maximum possible number of buffers for the
queue
media: test-drivers: vivid: Increase max supported buffers for capture
queues
media: test-drivers: vicodec: Increase max supported capture queue
buffers
media: verisilicon: Refactor postprocessor to store more buffers
media: verisilicon: Store chroma and motion vectors offset
media: verisilicon: g2: Use common helpers to compute chroma and mv
offsets
media: verisilicon: vp9: Allow to change resolution while streaming
media: core: Rework how create_buf index returned value is computed
media: core: Add bitmap manage bufs array entries
media: core: Free range of buffers
media: v4l2: Add DELETE_BUFS ioctl
media: v4l2: Add mem2mem helpers for DELETE_BUFS ioctl
media: test-drivers: Use helper for DELETE_BUFS ioctl
.../userspace-api/media/v4l/user-func.rst | 1 +
.../media/v4l/vidioc-create-bufs.rst | 8 +-
.../media/v4l/vidioc-delete-bufs.rst | 80 +++
.../media/v4l/vidioc-reqbufs.rst | 2 +
drivers/input/touchscreen/sur40.c | 5 +-
.../media/common/videobuf2/videobuf2-core.c | 569 +++++++++++-------
.../media/common/videobuf2/videobuf2-v4l2.c | 125 ++--
drivers/media/dvb-core/dvb_vb2.c | 17 +-
drivers/media/dvb-frontends/rtl2832_sdr.c | 5 +-
drivers/media/i2c/video-i2c.c | 5 +-
drivers/media/pci/cx18/cx18-streams.c | 5 +-
drivers/media/pci/dt3155/dt3155.c | 2 -
.../pci/netup_unidvb/netup_unidvb_core.c | 5 +-
drivers/media/pci/tw68/tw68-video.c | 4 +-
drivers/media/pci/tw686x/tw686x-video.c | 5 +-
drivers/media/platform/amphion/vpu_dbg.c | 30 +-
drivers/media/platform/amphion/vpu_v4l2.c | 4 +-
.../media/platform/chips-media/coda-common.c | 2 +-
.../platform/mediatek/jpeg/mtk_jpeg_core.c | 7 +-
.../vcodec/decoder/vdec/vdec_vp9_req_lat_if.c | 9 +-
.../mediatek/vcodec/encoder/mtk_vcodec_enc.c | 2 +-
drivers/media/platform/nuvoton/npcm-video.c | 2 +-
drivers/media/platform/nxp/imx7-media-csi.c | 7 +-
drivers/media/platform/renesas/rcar_drif.c | 5 +-
drivers/media/platform/st/sti/hva/hva-v4l2.c | 9 +-
.../media/platform/ti/am437x/am437x-vpfe.c | 5 +-
drivers/media/platform/ti/cal/cal-video.c | 5 +-
.../media/platform/ti/davinci/vpif_capture.c | 5 +-
.../media/platform/ti/davinci/vpif_display.c | 5 +-
drivers/media/platform/ti/omap/omap_vout.c | 5 +-
drivers/media/platform/verisilicon/hantro.h | 9 +-
.../media/platform/verisilicon/hantro_drv.c | 5 +-
.../media/platform/verisilicon/hantro_g2.c | 14 +
.../platform/verisilicon/hantro_g2_hevc_dec.c | 18 +-
.../platform/verisilicon/hantro_g2_vp9_dec.c | 28 +-
.../media/platform/verisilicon/hantro_hw.h | 7 +-
.../platform/verisilicon/hantro_postproc.c | 93 ++-
.../media/platform/verisilicon/hantro_v4l2.c | 27 +-
.../media/test-drivers/vicodec/vicodec-core.c | 3 +
drivers/media/test-drivers/vim2m.c | 2 +
.../media/test-drivers/vimc/vimc-capture.c | 2 +
drivers/media/test-drivers/visl/visl-dec.c | 32 +-
drivers/media/test-drivers/visl/visl-video.c | 2 +
drivers/media/test-drivers/vivid/vivid-core.c | 21 +
.../media/test-drivers/vivid/vivid-meta-cap.c | 3 -
.../media/test-drivers/vivid/vivid-meta-out.c | 5 +-
.../test-drivers/vivid/vivid-touch-cap.c | 5 +-
.../media/test-drivers/vivid/vivid-vbi-cap.c | 3 -
.../media/test-drivers/vivid/vivid-vbi-out.c | 3 -
.../media/test-drivers/vivid/vivid-vid-cap.c | 3 -
.../media/test-drivers/vivid/vivid-vid-out.c | 5 +-
drivers/media/usb/airspy/airspy.c | 5 +-
drivers/media/usb/cx231xx/cx231xx-417.c | 5 +-
drivers/media/usb/cx231xx/cx231xx-video.c | 5 +-
drivers/media/usb/hackrf/hackrf.c | 5 +-
drivers/media/usb/usbtv/usbtv-video.c | 5 +-
drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 9 +-
drivers/media/v4l2-core/v4l2-dev.c | 1 +
drivers/media/v4l2-core/v4l2-ioctl.c | 21 +-
drivers/media/v4l2-core/v4l2-mem2mem.c | 20 +
.../staging/media/atomisp/pci/atomisp_ioctl.c | 4 +-
drivers/staging/media/imx/imx-media-capture.c | 7 +-
drivers/staging/media/meson/vdec/vdec.c | 13 +-
.../staging/media/sunxi/cedrus/cedrus_h264.c | 9 +-
.../staging/media/sunxi/cedrus/cedrus_h265.c | 9 +-
include/media/v4l2-ioctl.h | 4 +
include/media/v4l2-mem2mem.h | 12 +
include/media/videobuf2-core.h | 65 +-
include/media/videobuf2-v4l2.h | 13 +
include/uapi/linux/videodev2.h | 24 +-
samples/v4l/v4l2-pci-skeleton.c | 5 +-
71 files changed, 998 insertions(+), 473 deletions(-)
create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* [PATCH v14 01/56] media: videobuf2: Rename offset parameter
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Rename 'off' parameter to 'offset' to clarify the code.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 26 +++++++++----------
1 file changed, 13 insertions(+), 13 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 27aee92f3eea..a5e57affeb30 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -356,23 +356,23 @@ static void __setup_offsets(struct vb2_buffer *vb)
{
struct vb2_queue *q = vb->vb2_queue;
unsigned int plane;
- unsigned long off = 0;
+ unsigned long offset = 0;
if (vb->index) {
struct vb2_buffer *prev = q->bufs[vb->index - 1];
struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
- off = PAGE_ALIGN(p->m.offset + p->length);
+ offset = PAGE_ALIGN(p->m.offset + p->length);
}
for (plane = 0; plane < vb->num_planes; ++plane) {
- vb->planes[plane].m.offset = off;
+ vb->planes[plane].m.offset = offset;
dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
- vb->index, plane, off);
+ vb->index, plane, offset);
- off += vb->planes[plane].length;
- off = PAGE_ALIGN(off);
+ offset += vb->planes[plane].length;
+ offset = PAGE_ALIGN(offset);
}
}
@@ -2185,9 +2185,9 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type)
EXPORT_SYMBOL_GPL(vb2_core_streamoff);
/*
- * __find_plane_by_offset() - find plane associated with the given offset off
+ * __find_plane_by_offset() - find plane associated with the given offset
*/
-static int __find_plane_by_offset(struct vb2_queue *q, unsigned long off,
+static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
unsigned int *_buffer, unsigned int *_plane)
{
struct vb2_buffer *vb;
@@ -2218,7 +2218,7 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long off,
vb = q->bufs[buffer];
for (plane = 0; plane < vb->num_planes; ++plane) {
- if (vb->planes[plane].m.offset == off) {
+ if (vb->planes[plane].m.offset == offset) {
*_buffer = buffer;
*_plane = plane;
return 0;
@@ -2304,7 +2304,7 @@ EXPORT_SYMBOL_GPL(vb2_core_expbuf);
int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
{
- unsigned long off = vma->vm_pgoff << PAGE_SHIFT;
+ unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
struct vb2_buffer *vb;
unsigned int buffer = 0, plane = 0;
int ret;
@@ -2335,7 +2335,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
* Find the plane corresponding to the offset passed by userspace. This
* will return an error if not MEMORY_MMAP or file I/O is in progress.
*/
- ret = __find_plane_by_offset(q, off, &buffer, &plane);
+ ret = __find_plane_by_offset(q, offset, &buffer, &plane);
if (ret)
goto unlock;
@@ -2380,7 +2380,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
unsigned long pgoff,
unsigned long flags)
{
- unsigned long off = pgoff << PAGE_SHIFT;
+ unsigned long offset = pgoff << PAGE_SHIFT;
struct vb2_buffer *vb;
unsigned int buffer, plane;
void *vaddr;
@@ -2392,7 +2392,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
* Find the plane corresponding to the offset passed by userspace. This
* will return an error if not MEMORY_MMAP or file I/O is in progress.
*/
- ret = __find_plane_by_offset(q, off, &buffer, &plane);
+ ret = __find_plane_by_offset(q, offset, &buffer, &plane);
if (ret)
goto unlock;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 01/56] media: videobuf2: Rename offset parameter
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Rename 'off' parameter to 'offset' to clarify the code.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 26 +++++++++----------
1 file changed, 13 insertions(+), 13 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 27aee92f3eea..a5e57affeb30 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -356,23 +356,23 @@ static void __setup_offsets(struct vb2_buffer *vb)
{
struct vb2_queue *q = vb->vb2_queue;
unsigned int plane;
- unsigned long off = 0;
+ unsigned long offset = 0;
if (vb->index) {
struct vb2_buffer *prev = q->bufs[vb->index - 1];
struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
- off = PAGE_ALIGN(p->m.offset + p->length);
+ offset = PAGE_ALIGN(p->m.offset + p->length);
}
for (plane = 0; plane < vb->num_planes; ++plane) {
- vb->planes[plane].m.offset = off;
+ vb->planes[plane].m.offset = offset;
dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
- vb->index, plane, off);
+ vb->index, plane, offset);
- off += vb->planes[plane].length;
- off = PAGE_ALIGN(off);
+ offset += vb->planes[plane].length;
+ offset = PAGE_ALIGN(offset);
}
}
@@ -2185,9 +2185,9 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type)
EXPORT_SYMBOL_GPL(vb2_core_streamoff);
/*
- * __find_plane_by_offset() - find plane associated with the given offset off
+ * __find_plane_by_offset() - find plane associated with the given offset
*/
-static int __find_plane_by_offset(struct vb2_queue *q, unsigned long off,
+static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
unsigned int *_buffer, unsigned int *_plane)
{
struct vb2_buffer *vb;
@@ -2218,7 +2218,7 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long off,
vb = q->bufs[buffer];
for (plane = 0; plane < vb->num_planes; ++plane) {
- if (vb->planes[plane].m.offset == off) {
+ if (vb->planes[plane].m.offset == offset) {
*_buffer = buffer;
*_plane = plane;
return 0;
@@ -2304,7 +2304,7 @@ EXPORT_SYMBOL_GPL(vb2_core_expbuf);
int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
{
- unsigned long off = vma->vm_pgoff << PAGE_SHIFT;
+ unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
struct vb2_buffer *vb;
unsigned int buffer = 0, plane = 0;
int ret;
@@ -2335,7 +2335,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
* Find the plane corresponding to the offset passed by userspace. This
* will return an error if not MEMORY_MMAP or file I/O is in progress.
*/
- ret = __find_plane_by_offset(q, off, &buffer, &plane);
+ ret = __find_plane_by_offset(q, offset, &buffer, &plane);
if (ret)
goto unlock;
@@ -2380,7 +2380,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
unsigned long pgoff,
unsigned long flags)
{
- unsigned long off = pgoff << PAGE_SHIFT;
+ unsigned long offset = pgoff << PAGE_SHIFT;
struct vb2_buffer *vb;
unsigned int buffer, plane;
void *vaddr;
@@ -2392,7 +2392,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
* Find the plane corresponding to the offset passed by userspace. This
* will return an error if not MEMORY_MMAP or file I/O is in progress.
*/
- ret = __find_plane_by_offset(q, off, &buffer, &plane);
+ ret = __find_plane_by_offset(q, offset, &buffer, &plane);
if (ret)
goto unlock;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 01/56] media: videobuf2: Rename offset parameter
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Rename 'off' parameter to 'offset' to clarify the code.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 26 +++++++++----------
1 file changed, 13 insertions(+), 13 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 27aee92f3eea..a5e57affeb30 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -356,23 +356,23 @@ static void __setup_offsets(struct vb2_buffer *vb)
{
struct vb2_queue *q = vb->vb2_queue;
unsigned int plane;
- unsigned long off = 0;
+ unsigned long offset = 0;
if (vb->index) {
struct vb2_buffer *prev = q->bufs[vb->index - 1];
struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
- off = PAGE_ALIGN(p->m.offset + p->length);
+ offset = PAGE_ALIGN(p->m.offset + p->length);
}
for (plane = 0; plane < vb->num_planes; ++plane) {
- vb->planes[plane].m.offset = off;
+ vb->planes[plane].m.offset = offset;
dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
- vb->index, plane, off);
+ vb->index, plane, offset);
- off += vb->planes[plane].length;
- off = PAGE_ALIGN(off);
+ offset += vb->planes[plane].length;
+ offset = PAGE_ALIGN(offset);
}
}
@@ -2185,9 +2185,9 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type)
EXPORT_SYMBOL_GPL(vb2_core_streamoff);
/*
- * __find_plane_by_offset() - find plane associated with the given offset off
+ * __find_plane_by_offset() - find plane associated with the given offset
*/
-static int __find_plane_by_offset(struct vb2_queue *q, unsigned long off,
+static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
unsigned int *_buffer, unsigned int *_plane)
{
struct vb2_buffer *vb;
@@ -2218,7 +2218,7 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long off,
vb = q->bufs[buffer];
for (plane = 0; plane < vb->num_planes; ++plane) {
- if (vb->planes[plane].m.offset == off) {
+ if (vb->planes[plane].m.offset == offset) {
*_buffer = buffer;
*_plane = plane;
return 0;
@@ -2304,7 +2304,7 @@ EXPORT_SYMBOL_GPL(vb2_core_expbuf);
int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
{
- unsigned long off = vma->vm_pgoff << PAGE_SHIFT;
+ unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
struct vb2_buffer *vb;
unsigned int buffer = 0, plane = 0;
int ret;
@@ -2335,7 +2335,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
* Find the plane corresponding to the offset passed by userspace. This
* will return an error if not MEMORY_MMAP or file I/O is in progress.
*/
- ret = __find_plane_by_offset(q, off, &buffer, &plane);
+ ret = __find_plane_by_offset(q, offset, &buffer, &plane);
if (ret)
goto unlock;
@@ -2380,7 +2380,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
unsigned long pgoff,
unsigned long flags)
{
- unsigned long off = pgoff << PAGE_SHIFT;
+ unsigned long offset = pgoff << PAGE_SHIFT;
struct vb2_buffer *vb;
unsigned int buffer, plane;
void *vaddr;
@@ -2392,7 +2392,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
* Find the plane corresponding to the offset passed by userspace. This
* will return an error if not MEMORY_MMAP or file I/O is in progress.
*/
- ret = __find_plane_by_offset(q, off, &buffer, &plane);
+ ret = __find_plane_by_offset(q, offset, &buffer, &plane);
if (ret)
goto unlock;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 02/56] media: videobuf2: Rework offset 'cookie' encoding pattern
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Change how offset 'cookie' field value is computed to make possible
to use more buffers.
The maximum number of buffers depends of PAGE_SHIFT value and can
go up to 0x7fff when PAGE_SHIFT = 12.
With this encoding pattern we know the maximum number that a queue
could store so we can check it at queue init time.
It also make easier and faster to find buffer and plane from using
the offset field.
Change __find_plane_by_offset() prototype to return the video buffer
itself rather than it index.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 73 +++++++++----------
1 file changed, 35 insertions(+), 38 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index a5e57affeb30..09be8e026044 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -31,6 +31,11 @@
#include <trace/events/vb2.h>
+#define PLANE_INDEX_SHIFT (PAGE_SHIFT + 3)
+#define PLANE_INDEX_MASK 0x7
+#define MAX_BUFFER_INDEX BIT_MASK(30 - PLANE_INDEX_SHIFT)
+#define BUFFER_INDEX_MASK (MAX_BUFFER_INDEX - 1)
+
static int debug;
module_param(debug, int, 0644);
@@ -358,21 +363,27 @@ static void __setup_offsets(struct vb2_buffer *vb)
unsigned int plane;
unsigned long offset = 0;
- if (vb->index) {
- struct vb2_buffer *prev = q->bufs[vb->index - 1];
- struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
-
- offset = PAGE_ALIGN(p->m.offset + p->length);
- }
+ /*
+ * The offset "cookie" value has the following constraints:
+ * - a buffer can have up to 8 planes.
+ * - v4l2 mem2mem uses bit 30 to distinguish between
+ * OUTPUT (aka "source", bit 30 is 0) and
+ * CAPTURE (aka "destination", bit 30 is 1) buffers.
+ * - must be page aligned
+ * That led to this bit mapping when PAGE_SHIFT = 12:
+ * |30 |29 15|14 12|11 0|
+ * |DST_QUEUE_OFF_BASE|buffer index|plane index| 0 |
+ * where there are 15 bits to store the buffer index.
+ * Depending on PAGE_SHIFT value we can have fewer bits
+ * to store the buffer index.
+ */
+ offset = vb->index << PLANE_INDEX_SHIFT;
for (plane = 0; plane < vb->num_planes; ++plane) {
- vb->planes[plane].m.offset = offset;
+ vb->planes[plane].m.offset = offset + (plane << PAGE_SHIFT);
dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
vb->index, plane, offset);
-
- offset += vb->planes[plane].length;
- offset = PAGE_ALIGN(offset);
}
}
@@ -2188,10 +2199,9 @@ EXPORT_SYMBOL_GPL(vb2_core_streamoff);
* __find_plane_by_offset() - find plane associated with the given offset
*/
static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
- unsigned int *_buffer, unsigned int *_plane)
+ struct vb2_buffer **vb, unsigned int *plane)
{
- struct vb2_buffer *vb;
- unsigned int buffer, plane;
+ unsigned int buffer;
/*
* Sanity checks to ensure the lock is held, MEMORY_MMAP is
@@ -2209,24 +2219,15 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
return -EBUSY;
}
- /*
- * Go over all buffers and their planes, comparing the given offset
- * with an offset assigned to each plane. If a match is found,
- * return its buffer and plane numbers.
- */
- for (buffer = 0; buffer < q->num_buffers; ++buffer) {
- vb = q->bufs[buffer];
+ /* Get buffer and plane from the offset */
+ buffer = (offset >> PLANE_INDEX_SHIFT) & BUFFER_INDEX_MASK;
+ *plane = (offset >> PAGE_SHIFT) & PLANE_INDEX_MASK;
- for (plane = 0; plane < vb->num_planes; ++plane) {
- if (vb->planes[plane].m.offset == offset) {
- *_buffer = buffer;
- *_plane = plane;
- return 0;
- }
- }
- }
+ if (buffer >= q->num_buffers || *plane >= q->bufs[buffer]->num_planes)
+ return -EINVAL;
- return -EINVAL;
+ *vb = q->bufs[buffer];
+ return 0;
}
int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
@@ -2306,7 +2307,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
{
unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
struct vb2_buffer *vb;
- unsigned int buffer = 0, plane = 0;
+ unsigned int plane = 0;
int ret;
unsigned long length;
@@ -2335,12 +2336,10 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
* Find the plane corresponding to the offset passed by userspace. This
* will return an error if not MEMORY_MMAP or file I/O is in progress.
*/
- ret = __find_plane_by_offset(q, offset, &buffer, &plane);
+ ret = __find_plane_by_offset(q, offset, &vb, &plane);
if (ret)
goto unlock;
- vb = q->bufs[buffer];
-
/*
* MMAP requires page_aligned buffers.
* The buffer length was page_aligned at __vb2_buf_mem_alloc(),
@@ -2368,7 +2367,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
if (ret)
return ret;
- dprintk(q, 3, "buffer %d, plane %d successfully mapped\n", buffer, plane);
+ dprintk(q, 3, "buffer %u, plane %d successfully mapped\n", vb->index, plane);
return 0;
}
EXPORT_SYMBOL_GPL(vb2_mmap);
@@ -2382,7 +2381,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
{
unsigned long offset = pgoff << PAGE_SHIFT;
struct vb2_buffer *vb;
- unsigned int buffer, plane;
+ unsigned int plane;
void *vaddr;
int ret;
@@ -2392,12 +2391,10 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
* Find the plane corresponding to the offset passed by userspace. This
* will return an error if not MEMORY_MMAP or file I/O is in progress.
*/
- ret = __find_plane_by_offset(q, offset, &buffer, &plane);
+ ret = __find_plane_by_offset(q, offset, &vb, &plane);
if (ret)
goto unlock;
- vb = q->bufs[buffer];
-
vaddr = vb2_plane_vaddr(vb, plane);
mutex_unlock(&q->mmap_lock);
return vaddr ? (unsigned long)vaddr : -EINVAL;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 02/56] media: videobuf2: Rework offset 'cookie' encoding pattern
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Change how offset 'cookie' field value is computed to make possible
to use more buffers.
The maximum number of buffers depends of PAGE_SHIFT value and can
go up to 0x7fff when PAGE_SHIFT = 12.
With this encoding pattern we know the maximum number that a queue
could store so we can check it at queue init time.
It also make easier and faster to find buffer and plane from using
the offset field.
Change __find_plane_by_offset() prototype to return the video buffer
itself rather than it index.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 73 +++++++++----------
1 file changed, 35 insertions(+), 38 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index a5e57affeb30..09be8e026044 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -31,6 +31,11 @@
#include <trace/events/vb2.h>
+#define PLANE_INDEX_SHIFT (PAGE_SHIFT + 3)
+#define PLANE_INDEX_MASK 0x7
+#define MAX_BUFFER_INDEX BIT_MASK(30 - PLANE_INDEX_SHIFT)
+#define BUFFER_INDEX_MASK (MAX_BUFFER_INDEX - 1)
+
static int debug;
module_param(debug, int, 0644);
@@ -358,21 +363,27 @@ static void __setup_offsets(struct vb2_buffer *vb)
unsigned int plane;
unsigned long offset = 0;
- if (vb->index) {
- struct vb2_buffer *prev = q->bufs[vb->index - 1];
- struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
-
- offset = PAGE_ALIGN(p->m.offset + p->length);
- }
+ /*
+ * The offset "cookie" value has the following constraints:
+ * - a buffer can have up to 8 planes.
+ * - v4l2 mem2mem uses bit 30 to distinguish between
+ * OUTPUT (aka "source", bit 30 is 0) and
+ * CAPTURE (aka "destination", bit 30 is 1) buffers.
+ * - must be page aligned
+ * That led to this bit mapping when PAGE_SHIFT = 12:
+ * |30 |29 15|14 12|11 0|
+ * |DST_QUEUE_OFF_BASE|buffer index|plane index| 0 |
+ * where there are 15 bits to store the buffer index.
+ * Depending on PAGE_SHIFT value we can have fewer bits
+ * to store the buffer index.
+ */
+ offset = vb->index << PLANE_INDEX_SHIFT;
for (plane = 0; plane < vb->num_planes; ++plane) {
- vb->planes[plane].m.offset = offset;
+ vb->planes[plane].m.offset = offset + (plane << PAGE_SHIFT);
dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
vb->index, plane, offset);
-
- offset += vb->planes[plane].length;
- offset = PAGE_ALIGN(offset);
}
}
@@ -2188,10 +2199,9 @@ EXPORT_SYMBOL_GPL(vb2_core_streamoff);
* __find_plane_by_offset() - find plane associated with the given offset
*/
static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
- unsigned int *_buffer, unsigned int *_plane)
+ struct vb2_buffer **vb, unsigned int *plane)
{
- struct vb2_buffer *vb;
- unsigned int buffer, plane;
+ unsigned int buffer;
/*
* Sanity checks to ensure the lock is held, MEMORY_MMAP is
@@ -2209,24 +2219,15 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
return -EBUSY;
}
- /*
- * Go over all buffers and their planes, comparing the given offset
- * with an offset assigned to each plane. If a match is found,
- * return its buffer and plane numbers.
- */
- for (buffer = 0; buffer < q->num_buffers; ++buffer) {
- vb = q->bufs[buffer];
+ /* Get buffer and plane from the offset */
+ buffer = (offset >> PLANE_INDEX_SHIFT) & BUFFER_INDEX_MASK;
+ *plane = (offset >> PAGE_SHIFT) & PLANE_INDEX_MASK;
- for (plane = 0; plane < vb->num_planes; ++plane) {
- if (vb->planes[plane].m.offset == offset) {
- *_buffer = buffer;
- *_plane = plane;
- return 0;
- }
- }
- }
+ if (buffer >= q->num_buffers || *plane >= q->bufs[buffer]->num_planes)
+ return -EINVAL;
- return -EINVAL;
+ *vb = q->bufs[buffer];
+ return 0;
}
int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
@@ -2306,7 +2307,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
{
unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
struct vb2_buffer *vb;
- unsigned int buffer = 0, plane = 0;
+ unsigned int plane = 0;
int ret;
unsigned long length;
@@ -2335,12 +2336,10 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
* Find the plane corresponding to the offset passed by userspace. This
* will return an error if not MEMORY_MMAP or file I/O is in progress.
*/
- ret = __find_plane_by_offset(q, offset, &buffer, &plane);
+ ret = __find_plane_by_offset(q, offset, &vb, &plane);
if (ret)
goto unlock;
- vb = q->bufs[buffer];
-
/*
* MMAP requires page_aligned buffers.
* The buffer length was page_aligned at __vb2_buf_mem_alloc(),
@@ -2368,7 +2367,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
if (ret)
return ret;
- dprintk(q, 3, "buffer %d, plane %d successfully mapped\n", buffer, plane);
+ dprintk(q, 3, "buffer %u, plane %d successfully mapped\n", vb->index, plane);
return 0;
}
EXPORT_SYMBOL_GPL(vb2_mmap);
@@ -2382,7 +2381,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
{
unsigned long offset = pgoff << PAGE_SHIFT;
struct vb2_buffer *vb;
- unsigned int buffer, plane;
+ unsigned int plane;
void *vaddr;
int ret;
@@ -2392,12 +2391,10 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
* Find the plane corresponding to the offset passed by userspace. This
* will return an error if not MEMORY_MMAP or file I/O is in progress.
*/
- ret = __find_plane_by_offset(q, offset, &buffer, &plane);
+ ret = __find_plane_by_offset(q, offset, &vb, &plane);
if (ret)
goto unlock;
- vb = q->bufs[buffer];
-
vaddr = vb2_plane_vaddr(vb, plane);
mutex_unlock(&q->mmap_lock);
return vaddr ? (unsigned long)vaddr : -EINVAL;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 02/56] media: videobuf2: Rework offset 'cookie' encoding pattern
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Change how offset 'cookie' field value is computed to make possible
to use more buffers.
The maximum number of buffers depends of PAGE_SHIFT value and can
go up to 0x7fff when PAGE_SHIFT = 12.
With this encoding pattern we know the maximum number that a queue
could store so we can check it at queue init time.
It also make easier and faster to find buffer and plane from using
the offset field.
Change __find_plane_by_offset() prototype to return the video buffer
itself rather than it index.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 73 +++++++++----------
1 file changed, 35 insertions(+), 38 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index a5e57affeb30..09be8e026044 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -31,6 +31,11 @@
#include <trace/events/vb2.h>
+#define PLANE_INDEX_SHIFT (PAGE_SHIFT + 3)
+#define PLANE_INDEX_MASK 0x7
+#define MAX_BUFFER_INDEX BIT_MASK(30 - PLANE_INDEX_SHIFT)
+#define BUFFER_INDEX_MASK (MAX_BUFFER_INDEX - 1)
+
static int debug;
module_param(debug, int, 0644);
@@ -358,21 +363,27 @@ static void __setup_offsets(struct vb2_buffer *vb)
unsigned int plane;
unsigned long offset = 0;
- if (vb->index) {
- struct vb2_buffer *prev = q->bufs[vb->index - 1];
- struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
-
- offset = PAGE_ALIGN(p->m.offset + p->length);
- }
+ /*
+ * The offset "cookie" value has the following constraints:
+ * - a buffer can have up to 8 planes.
+ * - v4l2 mem2mem uses bit 30 to distinguish between
+ * OUTPUT (aka "source", bit 30 is 0) and
+ * CAPTURE (aka "destination", bit 30 is 1) buffers.
+ * - must be page aligned
+ * That led to this bit mapping when PAGE_SHIFT = 12:
+ * |30 |29 15|14 12|11 0|
+ * |DST_QUEUE_OFF_BASE|buffer index|plane index| 0 |
+ * where there are 15 bits to store the buffer index.
+ * Depending on PAGE_SHIFT value we can have fewer bits
+ * to store the buffer index.
+ */
+ offset = vb->index << PLANE_INDEX_SHIFT;
for (plane = 0; plane < vb->num_planes; ++plane) {
- vb->planes[plane].m.offset = offset;
+ vb->planes[plane].m.offset = offset + (plane << PAGE_SHIFT);
dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
vb->index, plane, offset);
-
- offset += vb->planes[plane].length;
- offset = PAGE_ALIGN(offset);
}
}
@@ -2188,10 +2199,9 @@ EXPORT_SYMBOL_GPL(vb2_core_streamoff);
* __find_plane_by_offset() - find plane associated with the given offset
*/
static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
- unsigned int *_buffer, unsigned int *_plane)
+ struct vb2_buffer **vb, unsigned int *plane)
{
- struct vb2_buffer *vb;
- unsigned int buffer, plane;
+ unsigned int buffer;
/*
* Sanity checks to ensure the lock is held, MEMORY_MMAP is
@@ -2209,24 +2219,15 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
return -EBUSY;
}
- /*
- * Go over all buffers and their planes, comparing the given offset
- * with an offset assigned to each plane. If a match is found,
- * return its buffer and plane numbers.
- */
- for (buffer = 0; buffer < q->num_buffers; ++buffer) {
- vb = q->bufs[buffer];
+ /* Get buffer and plane from the offset */
+ buffer = (offset >> PLANE_INDEX_SHIFT) & BUFFER_INDEX_MASK;
+ *plane = (offset >> PAGE_SHIFT) & PLANE_INDEX_MASK;
- for (plane = 0; plane < vb->num_planes; ++plane) {
- if (vb->planes[plane].m.offset == offset) {
- *_buffer = buffer;
- *_plane = plane;
- return 0;
- }
- }
- }
+ if (buffer >= q->num_buffers || *plane >= q->bufs[buffer]->num_planes)
+ return -EINVAL;
- return -EINVAL;
+ *vb = q->bufs[buffer];
+ return 0;
}
int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
@@ -2306,7 +2307,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
{
unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
struct vb2_buffer *vb;
- unsigned int buffer = 0, plane = 0;
+ unsigned int plane = 0;
int ret;
unsigned long length;
@@ -2335,12 +2336,10 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
* Find the plane corresponding to the offset passed by userspace. This
* will return an error if not MEMORY_MMAP or file I/O is in progress.
*/
- ret = __find_plane_by_offset(q, offset, &buffer, &plane);
+ ret = __find_plane_by_offset(q, offset, &vb, &plane);
if (ret)
goto unlock;
- vb = q->bufs[buffer];
-
/*
* MMAP requires page_aligned buffers.
* The buffer length was page_aligned at __vb2_buf_mem_alloc(),
@@ -2368,7 +2367,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
if (ret)
return ret;
- dprintk(q, 3, "buffer %d, plane %d successfully mapped\n", buffer, plane);
+ dprintk(q, 3, "buffer %u, plane %d successfully mapped\n", vb->index, plane);
return 0;
}
EXPORT_SYMBOL_GPL(vb2_mmap);
@@ -2382,7 +2381,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
{
unsigned long offset = pgoff << PAGE_SHIFT;
struct vb2_buffer *vb;
- unsigned int buffer, plane;
+ unsigned int plane;
void *vaddr;
int ret;
@@ -2392,12 +2391,10 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
* Find the plane corresponding to the offset passed by userspace. This
* will return an error if not MEMORY_MMAP or file I/O is in progress.
*/
- ret = __find_plane_by_offset(q, offset, &buffer, &plane);
+ ret = __find_plane_by_offset(q, offset, &vb, &plane);
if (ret)
goto unlock;
- vb = q->bufs[buffer];
-
vaddr = vb2_plane_vaddr(vb, plane);
mutex_unlock(&q->mmap_lock);
return vaddr ? (unsigned long)vaddr : -EINVAL;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 03/56] media: videobuf2: Stop spamming kernel log with all queue counter
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Only report unbalanced queue counters do avoid spamming kernel log
with useless information.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 79 +++++++++++--------
1 file changed, 44 insertions(+), 35 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 09be8e026044..47dba2a20d73 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -533,25 +533,26 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
#ifdef CONFIG_VIDEO_ADV_DEBUG
/*
- * Check that all the calls were balances during the life-time of this
- * queue. If not (or if the debug level is 1 or up), then dump the
- * counters to the kernel log.
+ * Check that all the calls were balanced during the life-time of this
+ * queue. If not then dump the counters to the kernel log.
*/
if (q->num_buffers) {
bool unbalanced = q->cnt_start_streaming != q->cnt_stop_streaming ||
q->cnt_prepare_streaming != q->cnt_unprepare_streaming ||
q->cnt_wait_prepare != q->cnt_wait_finish;
- if (unbalanced || debug) {
- pr_info("counters for queue %p:%s\n", q,
- unbalanced ? " UNBALANCED!" : "");
- pr_info(" setup: %u start_streaming: %u stop_streaming: %u\n",
- q->cnt_queue_setup, q->cnt_start_streaming,
- q->cnt_stop_streaming);
- pr_info(" prepare_streaming: %u unprepare_streaming: %u\n",
- q->cnt_prepare_streaming, q->cnt_unprepare_streaming);
- pr_info(" wait_prepare: %u wait_finish: %u\n",
- q->cnt_wait_prepare, q->cnt_wait_finish);
+ if (unbalanced) {
+ pr_info("unbalanced counters for queue %p:\n", q);
+ if (q->cnt_start_streaming != q->cnt_stop_streaming)
+ pr_info(" setup: %u start_streaming: %u stop_streaming: %u\n",
+ q->cnt_queue_setup, q->cnt_start_streaming,
+ q->cnt_stop_streaming);
+ if (q->cnt_prepare_streaming != q->cnt_unprepare_streaming)
+ pr_info(" prepare_streaming: %u unprepare_streaming: %u\n",
+ q->cnt_prepare_streaming, q->cnt_unprepare_streaming);
+ if (q->cnt_wait_prepare != q->cnt_wait_finish)
+ pr_info(" wait_prepare: %u wait_finish: %u\n",
+ q->cnt_wait_prepare, q->cnt_wait_finish);
}
q->cnt_queue_setup = 0;
q->cnt_wait_prepare = 0;
@@ -572,29 +573,37 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
vb->cnt_buf_prepare != vb->cnt_buf_finish ||
vb->cnt_buf_init != vb->cnt_buf_cleanup;
- if (unbalanced || debug) {
- pr_info(" counters for queue %p, buffer %d:%s\n",
- q, buffer, unbalanced ? " UNBALANCED!" : "");
- pr_info(" buf_init: %u buf_cleanup: %u buf_prepare: %u buf_finish: %u\n",
- vb->cnt_buf_init, vb->cnt_buf_cleanup,
- vb->cnt_buf_prepare, vb->cnt_buf_finish);
- pr_info(" buf_out_validate: %u buf_queue: %u buf_done: %u buf_request_complete: %u\n",
- vb->cnt_buf_out_validate, vb->cnt_buf_queue,
- vb->cnt_buf_done, vb->cnt_buf_request_complete);
- pr_info(" alloc: %u put: %u prepare: %u finish: %u mmap: %u\n",
- vb->cnt_mem_alloc, vb->cnt_mem_put,
- vb->cnt_mem_prepare, vb->cnt_mem_finish,
- vb->cnt_mem_mmap);
- pr_info(" get_userptr: %u put_userptr: %u\n",
- vb->cnt_mem_get_userptr, vb->cnt_mem_put_userptr);
- pr_info(" attach_dmabuf: %u detach_dmabuf: %u map_dmabuf: %u unmap_dmabuf: %u\n",
- vb->cnt_mem_attach_dmabuf, vb->cnt_mem_detach_dmabuf,
- vb->cnt_mem_map_dmabuf, vb->cnt_mem_unmap_dmabuf);
- pr_info(" get_dmabuf: %u num_users: %u vaddr: %u cookie: %u\n",
+ if (unbalanced) {
+ pr_info("unbalanced counters for queue %p, buffer %d:\n",
+ q, buffer);
+ if (vb->cnt_buf_init != vb->cnt_buf_cleanup)
+ pr_info(" buf_init: %u buf_cleanup: %u\n",
+ vb->cnt_buf_init, vb->cnt_buf_cleanup);
+ if (vb->cnt_buf_prepare != vb->cnt_buf_finish)
+ pr_info(" buf_prepare: %u buf_finish: %u\n",
+ vb->cnt_buf_prepare, vb->cnt_buf_finish);
+ if (vb->cnt_buf_queue != vb->cnt_buf_done)
+ pr_info(" buf_out_validate: %u buf_queue: %u buf_done: %u buf_request_complete: %u\n",
+ vb->cnt_buf_out_validate, vb->cnt_buf_queue,
+ vb->cnt_buf_done, vb->cnt_buf_request_complete);
+ if (vb->cnt_mem_alloc != vb->cnt_mem_put)
+ pr_info(" alloc: %u put: %u\n",
+ vb->cnt_mem_alloc, vb->cnt_mem_put);
+ if (vb->cnt_mem_prepare != vb->cnt_mem_finish)
+ pr_info(" prepare: %u finish: %u\n",
+ vb->cnt_mem_prepare, vb->cnt_mem_finish);
+ if (vb->cnt_mem_get_userptr != vb->cnt_mem_put_userptr)
+ pr_info(" get_userptr: %u put_userptr: %u\n",
+ vb->cnt_mem_get_userptr, vb->cnt_mem_put_userptr);
+ if (vb->cnt_mem_attach_dmabuf != vb->cnt_mem_detach_dmabuf)
+ pr_info(" attach_dmabuf: %u detach_dmabuf: %u\n",
+ vb->cnt_mem_attach_dmabuf, vb->cnt_mem_detach_dmabuf);
+ if (vb->cnt_mem_map_dmabuf != vb->cnt_mem_unmap_dmabuf)
+ pr_info(" map_dmabuf: %u unmap_dmabuf: %u\n",
+ vb->cnt_mem_map_dmabuf, vb->cnt_mem_unmap_dmabuf);
+ pr_info(" get_dmabuf: %u num_users: %u\n",
vb->cnt_mem_get_dmabuf,
- vb->cnt_mem_num_users,
- vb->cnt_mem_vaddr,
- vb->cnt_mem_cookie);
+ vb->cnt_mem_num_users);
}
}
#endif
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 03/56] media: videobuf2: Stop spamming kernel log with all queue counter
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Only report unbalanced queue counters do avoid spamming kernel log
with useless information.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 79 +++++++++++--------
1 file changed, 44 insertions(+), 35 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 09be8e026044..47dba2a20d73 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -533,25 +533,26 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
#ifdef CONFIG_VIDEO_ADV_DEBUG
/*
- * Check that all the calls were balances during the life-time of this
- * queue. If not (or if the debug level is 1 or up), then dump the
- * counters to the kernel log.
+ * Check that all the calls were balanced during the life-time of this
+ * queue. If not then dump the counters to the kernel log.
*/
if (q->num_buffers) {
bool unbalanced = q->cnt_start_streaming != q->cnt_stop_streaming ||
q->cnt_prepare_streaming != q->cnt_unprepare_streaming ||
q->cnt_wait_prepare != q->cnt_wait_finish;
- if (unbalanced || debug) {
- pr_info("counters for queue %p:%s\n", q,
- unbalanced ? " UNBALANCED!" : "");
- pr_info(" setup: %u start_streaming: %u stop_streaming: %u\n",
- q->cnt_queue_setup, q->cnt_start_streaming,
- q->cnt_stop_streaming);
- pr_info(" prepare_streaming: %u unprepare_streaming: %u\n",
- q->cnt_prepare_streaming, q->cnt_unprepare_streaming);
- pr_info(" wait_prepare: %u wait_finish: %u\n",
- q->cnt_wait_prepare, q->cnt_wait_finish);
+ if (unbalanced) {
+ pr_info("unbalanced counters for queue %p:\n", q);
+ if (q->cnt_start_streaming != q->cnt_stop_streaming)
+ pr_info(" setup: %u start_streaming: %u stop_streaming: %u\n",
+ q->cnt_queue_setup, q->cnt_start_streaming,
+ q->cnt_stop_streaming);
+ if (q->cnt_prepare_streaming != q->cnt_unprepare_streaming)
+ pr_info(" prepare_streaming: %u unprepare_streaming: %u\n",
+ q->cnt_prepare_streaming, q->cnt_unprepare_streaming);
+ if (q->cnt_wait_prepare != q->cnt_wait_finish)
+ pr_info(" wait_prepare: %u wait_finish: %u\n",
+ q->cnt_wait_prepare, q->cnt_wait_finish);
}
q->cnt_queue_setup = 0;
q->cnt_wait_prepare = 0;
@@ -572,29 +573,37 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
vb->cnt_buf_prepare != vb->cnt_buf_finish ||
vb->cnt_buf_init != vb->cnt_buf_cleanup;
- if (unbalanced || debug) {
- pr_info(" counters for queue %p, buffer %d:%s\n",
- q, buffer, unbalanced ? " UNBALANCED!" : "");
- pr_info(" buf_init: %u buf_cleanup: %u buf_prepare: %u buf_finish: %u\n",
- vb->cnt_buf_init, vb->cnt_buf_cleanup,
- vb->cnt_buf_prepare, vb->cnt_buf_finish);
- pr_info(" buf_out_validate: %u buf_queue: %u buf_done: %u buf_request_complete: %u\n",
- vb->cnt_buf_out_validate, vb->cnt_buf_queue,
- vb->cnt_buf_done, vb->cnt_buf_request_complete);
- pr_info(" alloc: %u put: %u prepare: %u finish: %u mmap: %u\n",
- vb->cnt_mem_alloc, vb->cnt_mem_put,
- vb->cnt_mem_prepare, vb->cnt_mem_finish,
- vb->cnt_mem_mmap);
- pr_info(" get_userptr: %u put_userptr: %u\n",
- vb->cnt_mem_get_userptr, vb->cnt_mem_put_userptr);
- pr_info(" attach_dmabuf: %u detach_dmabuf: %u map_dmabuf: %u unmap_dmabuf: %u\n",
- vb->cnt_mem_attach_dmabuf, vb->cnt_mem_detach_dmabuf,
- vb->cnt_mem_map_dmabuf, vb->cnt_mem_unmap_dmabuf);
- pr_info(" get_dmabuf: %u num_users: %u vaddr: %u cookie: %u\n",
+ if (unbalanced) {
+ pr_info("unbalanced counters for queue %p, buffer %d:\n",
+ q, buffer);
+ if (vb->cnt_buf_init != vb->cnt_buf_cleanup)
+ pr_info(" buf_init: %u buf_cleanup: %u\n",
+ vb->cnt_buf_init, vb->cnt_buf_cleanup);
+ if (vb->cnt_buf_prepare != vb->cnt_buf_finish)
+ pr_info(" buf_prepare: %u buf_finish: %u\n",
+ vb->cnt_buf_prepare, vb->cnt_buf_finish);
+ if (vb->cnt_buf_queue != vb->cnt_buf_done)
+ pr_info(" buf_out_validate: %u buf_queue: %u buf_done: %u buf_request_complete: %u\n",
+ vb->cnt_buf_out_validate, vb->cnt_buf_queue,
+ vb->cnt_buf_done, vb->cnt_buf_request_complete);
+ if (vb->cnt_mem_alloc != vb->cnt_mem_put)
+ pr_info(" alloc: %u put: %u\n",
+ vb->cnt_mem_alloc, vb->cnt_mem_put);
+ if (vb->cnt_mem_prepare != vb->cnt_mem_finish)
+ pr_info(" prepare: %u finish: %u\n",
+ vb->cnt_mem_prepare, vb->cnt_mem_finish);
+ if (vb->cnt_mem_get_userptr != vb->cnt_mem_put_userptr)
+ pr_info(" get_userptr: %u put_userptr: %u\n",
+ vb->cnt_mem_get_userptr, vb->cnt_mem_put_userptr);
+ if (vb->cnt_mem_attach_dmabuf != vb->cnt_mem_detach_dmabuf)
+ pr_info(" attach_dmabuf: %u detach_dmabuf: %u\n",
+ vb->cnt_mem_attach_dmabuf, vb->cnt_mem_detach_dmabuf);
+ if (vb->cnt_mem_map_dmabuf != vb->cnt_mem_unmap_dmabuf)
+ pr_info(" map_dmabuf: %u unmap_dmabuf: %u\n",
+ vb->cnt_mem_map_dmabuf, vb->cnt_mem_unmap_dmabuf);
+ pr_info(" get_dmabuf: %u num_users: %u\n",
vb->cnt_mem_get_dmabuf,
- vb->cnt_mem_num_users,
- vb->cnt_mem_vaddr,
- vb->cnt_mem_cookie);
+ vb->cnt_mem_num_users);
}
}
#endif
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 03/56] media: videobuf2: Stop spamming kernel log with all queue counter
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Only report unbalanced queue counters do avoid spamming kernel log
with useless information.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 79 +++++++++++--------
1 file changed, 44 insertions(+), 35 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 09be8e026044..47dba2a20d73 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -533,25 +533,26 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
#ifdef CONFIG_VIDEO_ADV_DEBUG
/*
- * Check that all the calls were balances during the life-time of this
- * queue. If not (or if the debug level is 1 or up), then dump the
- * counters to the kernel log.
+ * Check that all the calls were balanced during the life-time of this
+ * queue. If not then dump the counters to the kernel log.
*/
if (q->num_buffers) {
bool unbalanced = q->cnt_start_streaming != q->cnt_stop_streaming ||
q->cnt_prepare_streaming != q->cnt_unprepare_streaming ||
q->cnt_wait_prepare != q->cnt_wait_finish;
- if (unbalanced || debug) {
- pr_info("counters for queue %p:%s\n", q,
- unbalanced ? " UNBALANCED!" : "");
- pr_info(" setup: %u start_streaming: %u stop_streaming: %u\n",
- q->cnt_queue_setup, q->cnt_start_streaming,
- q->cnt_stop_streaming);
- pr_info(" prepare_streaming: %u unprepare_streaming: %u\n",
- q->cnt_prepare_streaming, q->cnt_unprepare_streaming);
- pr_info(" wait_prepare: %u wait_finish: %u\n",
- q->cnt_wait_prepare, q->cnt_wait_finish);
+ if (unbalanced) {
+ pr_info("unbalanced counters for queue %p:\n", q);
+ if (q->cnt_start_streaming != q->cnt_stop_streaming)
+ pr_info(" setup: %u start_streaming: %u stop_streaming: %u\n",
+ q->cnt_queue_setup, q->cnt_start_streaming,
+ q->cnt_stop_streaming);
+ if (q->cnt_prepare_streaming != q->cnt_unprepare_streaming)
+ pr_info(" prepare_streaming: %u unprepare_streaming: %u\n",
+ q->cnt_prepare_streaming, q->cnt_unprepare_streaming);
+ if (q->cnt_wait_prepare != q->cnt_wait_finish)
+ pr_info(" wait_prepare: %u wait_finish: %u\n",
+ q->cnt_wait_prepare, q->cnt_wait_finish);
}
q->cnt_queue_setup = 0;
q->cnt_wait_prepare = 0;
@@ -572,29 +573,37 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
vb->cnt_buf_prepare != vb->cnt_buf_finish ||
vb->cnt_buf_init != vb->cnt_buf_cleanup;
- if (unbalanced || debug) {
- pr_info(" counters for queue %p, buffer %d:%s\n",
- q, buffer, unbalanced ? " UNBALANCED!" : "");
- pr_info(" buf_init: %u buf_cleanup: %u buf_prepare: %u buf_finish: %u\n",
- vb->cnt_buf_init, vb->cnt_buf_cleanup,
- vb->cnt_buf_prepare, vb->cnt_buf_finish);
- pr_info(" buf_out_validate: %u buf_queue: %u buf_done: %u buf_request_complete: %u\n",
- vb->cnt_buf_out_validate, vb->cnt_buf_queue,
- vb->cnt_buf_done, vb->cnt_buf_request_complete);
- pr_info(" alloc: %u put: %u prepare: %u finish: %u mmap: %u\n",
- vb->cnt_mem_alloc, vb->cnt_mem_put,
- vb->cnt_mem_prepare, vb->cnt_mem_finish,
- vb->cnt_mem_mmap);
- pr_info(" get_userptr: %u put_userptr: %u\n",
- vb->cnt_mem_get_userptr, vb->cnt_mem_put_userptr);
- pr_info(" attach_dmabuf: %u detach_dmabuf: %u map_dmabuf: %u unmap_dmabuf: %u\n",
- vb->cnt_mem_attach_dmabuf, vb->cnt_mem_detach_dmabuf,
- vb->cnt_mem_map_dmabuf, vb->cnt_mem_unmap_dmabuf);
- pr_info(" get_dmabuf: %u num_users: %u vaddr: %u cookie: %u\n",
+ if (unbalanced) {
+ pr_info("unbalanced counters for queue %p, buffer %d:\n",
+ q, buffer);
+ if (vb->cnt_buf_init != vb->cnt_buf_cleanup)
+ pr_info(" buf_init: %u buf_cleanup: %u\n",
+ vb->cnt_buf_init, vb->cnt_buf_cleanup);
+ if (vb->cnt_buf_prepare != vb->cnt_buf_finish)
+ pr_info(" buf_prepare: %u buf_finish: %u\n",
+ vb->cnt_buf_prepare, vb->cnt_buf_finish);
+ if (vb->cnt_buf_queue != vb->cnt_buf_done)
+ pr_info(" buf_out_validate: %u buf_queue: %u buf_done: %u buf_request_complete: %u\n",
+ vb->cnt_buf_out_validate, vb->cnt_buf_queue,
+ vb->cnt_buf_done, vb->cnt_buf_request_complete);
+ if (vb->cnt_mem_alloc != vb->cnt_mem_put)
+ pr_info(" alloc: %u put: %u\n",
+ vb->cnt_mem_alloc, vb->cnt_mem_put);
+ if (vb->cnt_mem_prepare != vb->cnt_mem_finish)
+ pr_info(" prepare: %u finish: %u\n",
+ vb->cnt_mem_prepare, vb->cnt_mem_finish);
+ if (vb->cnt_mem_get_userptr != vb->cnt_mem_put_userptr)
+ pr_info(" get_userptr: %u put_userptr: %u\n",
+ vb->cnt_mem_get_userptr, vb->cnt_mem_put_userptr);
+ if (vb->cnt_mem_attach_dmabuf != vb->cnt_mem_detach_dmabuf)
+ pr_info(" attach_dmabuf: %u detach_dmabuf: %u\n",
+ vb->cnt_mem_attach_dmabuf, vb->cnt_mem_detach_dmabuf);
+ if (vb->cnt_mem_map_dmabuf != vb->cnt_mem_unmap_dmabuf)
+ pr_info(" map_dmabuf: %u unmap_dmabuf: %u\n",
+ vb->cnt_mem_map_dmabuf, vb->cnt_mem_unmap_dmabuf);
+ pr_info(" get_dmabuf: %u num_users: %u\n",
vb->cnt_mem_get_dmabuf,
- vb->cnt_mem_num_users,
- vb->cnt_mem_vaddr,
- vb->cnt_mem_cookie);
+ vb->cnt_mem_num_users);
}
}
#endif
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 04/56] media: videobuf2: Use vb2_buffer instead of index
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Directly use vb2_buffer pointer instead of index inside queue array.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 40 +++++----------
.../media/common/videobuf2/videobuf2-v4l2.c | 51 +++++++++++--------
drivers/media/dvb-core/dvb_vb2.c | 6 +--
include/media/videobuf2-core.h | 16 +++---
4 files changed, 53 insertions(+), 60 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 47dba2a20d73..968b7c0e7934 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -654,9 +654,9 @@ static bool __buffers_in_use(struct vb2_queue *q)
return false;
}
-void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb)
+void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
{
- call_void_bufop(q, fill_user_buffer, q->bufs[index], pb);
+ call_void_bufop(q, fill_user_buffer, vb, pb);
}
EXPORT_SYMBOL_GPL(vb2_core_querybuf);
@@ -1490,9 +1490,6 @@ static void vb2_req_unprepare(struct media_request_object *obj)
WARN_ON(!vb->req_obj.req);
}
-int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
- struct media_request *req);
-
static void vb2_req_queue(struct media_request_object *obj)
{
struct vb2_buffer *vb = container_of(obj, struct vb2_buffer, req_obj);
@@ -1507,7 +1504,7 @@ static void vb2_req_queue(struct media_request_object *obj)
* set. We just ignore that, and expect this will be caught the
* next time vb2_req_prepare() is called.
*/
- err = vb2_core_qbuf(vb->vb2_queue, vb->index, NULL, NULL);
+ err = vb2_core_qbuf(vb->vb2_queue, vb, NULL, NULL);
WARN_ON_ONCE(err && err != -EIO);
mutex_unlock(vb->vb2_queue->lock);
}
@@ -1562,12 +1559,10 @@ unsigned int vb2_request_buffer_cnt(struct media_request *req)
}
EXPORT_SYMBOL_GPL(vb2_request_buffer_cnt);
-int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb)
+int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
{
- struct vb2_buffer *vb;
int ret;
- vb = q->bufs[index];
if (vb->state != VB2_BUF_STATE_DEQUEUED) {
dprintk(q, 1, "invalid buffer state %s\n",
vb2_state_name(vb->state));
@@ -1654,10 +1649,9 @@ static int vb2_start_streaming(struct vb2_queue *q)
return ret;
}
-int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
+int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
struct media_request *req)
{
- struct vb2_buffer *vb;
enum vb2_buffer_state orig_state;
int ret;
@@ -1666,8 +1660,6 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
return -EIO;
}
- vb = q->bufs[index];
-
if (!req && vb->state != VB2_BUF_STATE_IN_REQUEST &&
q->requires_requests) {
dprintk(q, 1, "qbuf requires a request\n");
@@ -2240,9 +2232,8 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
}
int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
- unsigned int index, unsigned int plane, unsigned int flags)
+ struct vb2_buffer *vb, unsigned int plane, unsigned int flags)
{
- struct vb2_buffer *vb = NULL;
struct vb2_plane *vb_plane;
int ret;
struct dma_buf *dbuf;
@@ -2267,13 +2258,6 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
return -EINVAL;
}
- if (index >= q->num_buffers) {
- dprintk(q, 1, "buffer index out of range\n");
- return -EINVAL;
- }
-
- vb = q->bufs[index];
-
if (plane >= vb->num_planes) {
dprintk(q, 1, "buffer plane out of range\n");
return -EINVAL;
@@ -2292,20 +2276,20 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
flags & O_ACCMODE);
if (IS_ERR_OR_NULL(dbuf)) {
dprintk(q, 1, "failed to export buffer %d, plane %d\n",
- index, plane);
+ vb->index, plane);
return -EINVAL;
}
ret = dma_buf_fd(dbuf, flags & ~O_ACCMODE);
if (ret < 0) {
dprintk(q, 3, "buffer %d, plane %d failed to export (%d)\n",
- index, plane, ret);
+ vb->index, plane, ret);
dma_buf_put(dbuf);
return ret;
}
dprintk(q, 3, "buffer %d, plane %d exported as %d descriptor\n",
- index, plane, ret);
+ vb->index, plane, ret);
*fd = ret;
return 0;
@@ -2710,7 +2694,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
* Queue all buffers.
*/
for (i = 0; i < q->num_buffers; i++) {
- ret = vb2_core_qbuf(q, i, NULL, NULL);
+ ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
if (ret)
goto err_reqbufs;
fileio->bufs[i].queued = 1;
@@ -2895,7 +2879,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
if (copy_timestamp)
b->timestamp = ktime_get_ns();
- ret = vb2_core_qbuf(q, index, NULL, NULL);
+ ret = vb2_core_qbuf(q, b, NULL, NULL);
dprintk(q, 5, "vb2_qbuf result: %d\n", ret);
if (ret)
return ret;
@@ -2998,7 +2982,7 @@ static int vb2_thread(void *data)
if (copy_timestamp)
vb->timestamp = ktime_get_ns();
if (!threadio->stop)
- ret = vb2_core_qbuf(q, vb->index, NULL, NULL);
+ ret = vb2_core_qbuf(q, vb, NULL, NULL);
call_void_qop(q, wait_prepare, q);
if (ret || threadio->stop)
break;
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index c7a54d82a55e..d19d82a75ac6 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -364,13 +364,12 @@ static void set_buffer_cache_hints(struct vb2_queue *q,
}
static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
- struct v4l2_buffer *b, bool is_prepare,
- struct media_request **p_req)
+ struct vb2_buffer *vb, struct v4l2_buffer *b,
+ bool is_prepare, struct media_request **p_req)
{
const char *opname = is_prepare ? "prepare_buf" : "qbuf";
struct media_request *req;
struct vb2_v4l2_buffer *vbuf;
- struct vb2_buffer *vb;
int ret;
if (b->type != q->type) {
@@ -378,23 +377,11 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
return -EINVAL;
}
- if (b->index >= q->num_buffers) {
- dprintk(q, 1, "%s: buffer index out of range\n", opname);
- return -EINVAL;
- }
-
- if (q->bufs[b->index] == NULL) {
- /* Should never happen */
- dprintk(q, 1, "%s: buffer is NULL\n", opname);
- return -EINVAL;
- }
-
if (b->memory != q->memory) {
dprintk(q, 1, "%s: invalid memory type\n", opname);
return -EINVAL;
}
- vb = q->bufs[b->index];
vbuf = to_vb2_v4l2_buffer(vb);
ret = __verify_planes_array(vb, b);
if (ret)
@@ -667,7 +654,7 @@ int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b)
vb = q->bufs[b->index];
ret = __verify_planes_array(vb, b);
if (!ret)
- vb2_core_querybuf(q, b->index, b);
+ vb2_core_querybuf(q, vb, b);
return ret;
}
EXPORT_SYMBOL(vb2_querybuf);
@@ -723,6 +710,7 @@ EXPORT_SYMBOL_GPL(vb2_reqbufs);
int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
struct v4l2_buffer *b)
{
+ struct vb2_buffer *vb;
int ret;
if (vb2_fileio_is_active(q)) {
@@ -733,9 +721,15 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
if (b->flags & V4L2_BUF_FLAG_REQUEST_FD)
return -EINVAL;
- ret = vb2_queue_or_prepare_buf(q, mdev, b, true, NULL);
+ if (b->index >= q->num_buffers) {
+ dprintk(q, 1, "buffer index out of range\n");
+ return -EINVAL;
+ }
+ vb = q->bufs[b->index];
- return ret ? ret : vb2_core_prepare_buf(q, b->index, b);
+ ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, true, NULL);
+
+ return ret ? ret : vb2_core_prepare_buf(q, vb, b);
}
EXPORT_SYMBOL_GPL(vb2_prepare_buf);
@@ -803,6 +797,7 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
struct v4l2_buffer *b)
{
struct media_request *req = NULL;
+ struct vb2_buffer *vb;
int ret;
if (vb2_fileio_is_active(q)) {
@@ -810,10 +805,16 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
return -EBUSY;
}
- ret = vb2_queue_or_prepare_buf(q, mdev, b, false, &req);
+ if (b->index >= q->num_buffers) {
+ dprintk(q, 1, "buffer index out of range\n");
+ return -EINVAL;
+ }
+ vb = q->bufs[b->index];
+
+ ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, false, &req);
if (ret)
return ret;
- ret = vb2_core_qbuf(q, b->index, b, req);
+ ret = vb2_core_qbuf(q, vb, b, req);
if (req)
media_request_put(req);
return ret;
@@ -873,7 +874,15 @@ EXPORT_SYMBOL_GPL(vb2_streamoff);
int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
{
- return vb2_core_expbuf(q, &eb->fd, eb->type, eb->index,
+ struct vb2_buffer *vb;
+
+ if (eb->index >= q->num_buffers) {
+ dprintk(q, 1, "buffer index out of range\n");
+ return -EINVAL;
+ }
+ vb = q->bufs[eb->index];
+
+ return vb2_core_expbuf(q, &eb->fd, eb->type, vb,
eb->plane, eb->flags);
}
EXPORT_SYMBOL_GPL(vb2_expbuf);
diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
index 909df82fed33..b322ef179f05 100644
--- a/drivers/media/dvb-core/dvb_vb2.c
+++ b/drivers/media/dvb-core/dvb_vb2.c
@@ -360,7 +360,7 @@ int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
dprintk(1, "[%s] buffer index out of range\n", ctx->name);
return -EINVAL;
}
- vb2_core_querybuf(&ctx->vb_q, b->index, b);
+ vb2_core_querybuf(&ctx->vb_q, q->bufs[b->index], b);
dprintk(3, "[%s] index=%d\n", ctx->name, b->index);
return 0;
}
@@ -370,7 +370,7 @@ int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp)
struct vb2_queue *q = &ctx->vb_q;
int ret;
- ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, exp->index,
+ ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, q->bufs[exp->index],
0, exp->flags);
if (ret) {
dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
@@ -391,7 +391,7 @@ int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
dprintk(1, "[%s] buffer index out of range\n", ctx->name);
return -EINVAL;
}
- ret = vb2_core_qbuf(&ctx->vb_q, b->index, b, NULL);
+ ret = vb2_core_qbuf(&ctx->vb_q, q->bufs[b->index], b, NULL);
if (ret) {
dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
b->index, ret);
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 4b6a9d2ea372..cd3ff1cd759d 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -747,7 +747,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
/**
* vb2_core_querybuf() - query video buffer information.
* @q: pointer to &struct vb2_queue with videobuf2 queue.
- * @index: id number of the buffer.
+ * @vb: pointer to struct &vb2_buffer.
* @pb: buffer struct passed from userspace.
*
* Videobuf2 core helper to implement VIDIOC_QUERYBUF() operation. It is called
@@ -759,7 +759,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
*
* Return: returns zero on success; an error code otherwise.
*/
-void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb);
+void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
/**
* vb2_core_reqbufs() - Initiate streaming.
@@ -823,7 +823,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
* vb2_core_prepare_buf() - Pass ownership of a buffer from userspace
* to the kernel.
* @q: pointer to &struct vb2_queue with videobuf2 queue.
- * @index: id number of the buffer.
+ * @vb: pointer to struct &vb2_buffer.
* @pb: buffer structure passed from userspace to
* &v4l2_ioctl_ops->vidioc_prepare_buf handler in driver.
*
@@ -839,13 +839,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
*
* Return: returns zero on success; an error code otherwise.
*/
-int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
+int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
/**
* vb2_core_qbuf() - Queue a buffer from userspace
*
* @q: pointer to &struct vb2_queue with videobuf2 queue.
- * @index: id number of the buffer
+ * @vb: pointer to struct &vb2_buffer.
* @pb: buffer structure passed from userspace to
* v4l2_ioctl_ops->vidioc_qbuf handler in driver
* @req: pointer to &struct media_request, may be NULL.
@@ -867,7 +867,7 @@ int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
*
* Return: returns zero on success; an error code otherwise.
*/
-int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
+int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
struct media_request *req);
/**
@@ -931,7 +931,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
* @fd: pointer to the file descriptor associated with DMABUF
* (set by driver).
* @type: buffer type.
- * @index: id number of the buffer.
+ * @vb: pointer to struct &vb2_buffer.
* @plane: index of the plane to be exported, 0 for single plane queues
* @flags: file flags for newly created file, as defined at
* include/uapi/asm-generic/fcntl.h.
@@ -945,7 +945,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
* Return: returns zero on success; an error code otherwise.
*/
int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
- unsigned int index, unsigned int plane, unsigned int flags);
+ struct vb2_buffer *vb, unsigned int plane, unsigned int flags);
/**
* vb2_core_queue_init() - initialize a videobuf2 queue
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 04/56] media: videobuf2: Use vb2_buffer instead of index
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Directly use vb2_buffer pointer instead of index inside queue array.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 40 +++++----------
.../media/common/videobuf2/videobuf2-v4l2.c | 51 +++++++++++--------
drivers/media/dvb-core/dvb_vb2.c | 6 +--
include/media/videobuf2-core.h | 16 +++---
4 files changed, 53 insertions(+), 60 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 47dba2a20d73..968b7c0e7934 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -654,9 +654,9 @@ static bool __buffers_in_use(struct vb2_queue *q)
return false;
}
-void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb)
+void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
{
- call_void_bufop(q, fill_user_buffer, q->bufs[index], pb);
+ call_void_bufop(q, fill_user_buffer, vb, pb);
}
EXPORT_SYMBOL_GPL(vb2_core_querybuf);
@@ -1490,9 +1490,6 @@ static void vb2_req_unprepare(struct media_request_object *obj)
WARN_ON(!vb->req_obj.req);
}
-int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
- struct media_request *req);
-
static void vb2_req_queue(struct media_request_object *obj)
{
struct vb2_buffer *vb = container_of(obj, struct vb2_buffer, req_obj);
@@ -1507,7 +1504,7 @@ static void vb2_req_queue(struct media_request_object *obj)
* set. We just ignore that, and expect this will be caught the
* next time vb2_req_prepare() is called.
*/
- err = vb2_core_qbuf(vb->vb2_queue, vb->index, NULL, NULL);
+ err = vb2_core_qbuf(vb->vb2_queue, vb, NULL, NULL);
WARN_ON_ONCE(err && err != -EIO);
mutex_unlock(vb->vb2_queue->lock);
}
@@ -1562,12 +1559,10 @@ unsigned int vb2_request_buffer_cnt(struct media_request *req)
}
EXPORT_SYMBOL_GPL(vb2_request_buffer_cnt);
-int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb)
+int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
{
- struct vb2_buffer *vb;
int ret;
- vb = q->bufs[index];
if (vb->state != VB2_BUF_STATE_DEQUEUED) {
dprintk(q, 1, "invalid buffer state %s\n",
vb2_state_name(vb->state));
@@ -1654,10 +1649,9 @@ static int vb2_start_streaming(struct vb2_queue *q)
return ret;
}
-int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
+int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
struct media_request *req)
{
- struct vb2_buffer *vb;
enum vb2_buffer_state orig_state;
int ret;
@@ -1666,8 +1660,6 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
return -EIO;
}
- vb = q->bufs[index];
-
if (!req && vb->state != VB2_BUF_STATE_IN_REQUEST &&
q->requires_requests) {
dprintk(q, 1, "qbuf requires a request\n");
@@ -2240,9 +2232,8 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
}
int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
- unsigned int index, unsigned int plane, unsigned int flags)
+ struct vb2_buffer *vb, unsigned int plane, unsigned int flags)
{
- struct vb2_buffer *vb = NULL;
struct vb2_plane *vb_plane;
int ret;
struct dma_buf *dbuf;
@@ -2267,13 +2258,6 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
return -EINVAL;
}
- if (index >= q->num_buffers) {
- dprintk(q, 1, "buffer index out of range\n");
- return -EINVAL;
- }
-
- vb = q->bufs[index];
-
if (plane >= vb->num_planes) {
dprintk(q, 1, "buffer plane out of range\n");
return -EINVAL;
@@ -2292,20 +2276,20 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
flags & O_ACCMODE);
if (IS_ERR_OR_NULL(dbuf)) {
dprintk(q, 1, "failed to export buffer %d, plane %d\n",
- index, plane);
+ vb->index, plane);
return -EINVAL;
}
ret = dma_buf_fd(dbuf, flags & ~O_ACCMODE);
if (ret < 0) {
dprintk(q, 3, "buffer %d, plane %d failed to export (%d)\n",
- index, plane, ret);
+ vb->index, plane, ret);
dma_buf_put(dbuf);
return ret;
}
dprintk(q, 3, "buffer %d, plane %d exported as %d descriptor\n",
- index, plane, ret);
+ vb->index, plane, ret);
*fd = ret;
return 0;
@@ -2710,7 +2694,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
* Queue all buffers.
*/
for (i = 0; i < q->num_buffers; i++) {
- ret = vb2_core_qbuf(q, i, NULL, NULL);
+ ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
if (ret)
goto err_reqbufs;
fileio->bufs[i].queued = 1;
@@ -2895,7 +2879,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
if (copy_timestamp)
b->timestamp = ktime_get_ns();
- ret = vb2_core_qbuf(q, index, NULL, NULL);
+ ret = vb2_core_qbuf(q, b, NULL, NULL);
dprintk(q, 5, "vb2_qbuf result: %d\n", ret);
if (ret)
return ret;
@@ -2998,7 +2982,7 @@ static int vb2_thread(void *data)
if (copy_timestamp)
vb->timestamp = ktime_get_ns();
if (!threadio->stop)
- ret = vb2_core_qbuf(q, vb->index, NULL, NULL);
+ ret = vb2_core_qbuf(q, vb, NULL, NULL);
call_void_qop(q, wait_prepare, q);
if (ret || threadio->stop)
break;
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index c7a54d82a55e..d19d82a75ac6 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -364,13 +364,12 @@ static void set_buffer_cache_hints(struct vb2_queue *q,
}
static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
- struct v4l2_buffer *b, bool is_prepare,
- struct media_request **p_req)
+ struct vb2_buffer *vb, struct v4l2_buffer *b,
+ bool is_prepare, struct media_request **p_req)
{
const char *opname = is_prepare ? "prepare_buf" : "qbuf";
struct media_request *req;
struct vb2_v4l2_buffer *vbuf;
- struct vb2_buffer *vb;
int ret;
if (b->type != q->type) {
@@ -378,23 +377,11 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
return -EINVAL;
}
- if (b->index >= q->num_buffers) {
- dprintk(q, 1, "%s: buffer index out of range\n", opname);
- return -EINVAL;
- }
-
- if (q->bufs[b->index] == NULL) {
- /* Should never happen */
- dprintk(q, 1, "%s: buffer is NULL\n", opname);
- return -EINVAL;
- }
-
if (b->memory != q->memory) {
dprintk(q, 1, "%s: invalid memory type\n", opname);
return -EINVAL;
}
- vb = q->bufs[b->index];
vbuf = to_vb2_v4l2_buffer(vb);
ret = __verify_planes_array(vb, b);
if (ret)
@@ -667,7 +654,7 @@ int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b)
vb = q->bufs[b->index];
ret = __verify_planes_array(vb, b);
if (!ret)
- vb2_core_querybuf(q, b->index, b);
+ vb2_core_querybuf(q, vb, b);
return ret;
}
EXPORT_SYMBOL(vb2_querybuf);
@@ -723,6 +710,7 @@ EXPORT_SYMBOL_GPL(vb2_reqbufs);
int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
struct v4l2_buffer *b)
{
+ struct vb2_buffer *vb;
int ret;
if (vb2_fileio_is_active(q)) {
@@ -733,9 +721,15 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
if (b->flags & V4L2_BUF_FLAG_REQUEST_FD)
return -EINVAL;
- ret = vb2_queue_or_prepare_buf(q, mdev, b, true, NULL);
+ if (b->index >= q->num_buffers) {
+ dprintk(q, 1, "buffer index out of range\n");
+ return -EINVAL;
+ }
+ vb = q->bufs[b->index];
- return ret ? ret : vb2_core_prepare_buf(q, b->index, b);
+ ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, true, NULL);
+
+ return ret ? ret : vb2_core_prepare_buf(q, vb, b);
}
EXPORT_SYMBOL_GPL(vb2_prepare_buf);
@@ -803,6 +797,7 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
struct v4l2_buffer *b)
{
struct media_request *req = NULL;
+ struct vb2_buffer *vb;
int ret;
if (vb2_fileio_is_active(q)) {
@@ -810,10 +805,16 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
return -EBUSY;
}
- ret = vb2_queue_or_prepare_buf(q, mdev, b, false, &req);
+ if (b->index >= q->num_buffers) {
+ dprintk(q, 1, "buffer index out of range\n");
+ return -EINVAL;
+ }
+ vb = q->bufs[b->index];
+
+ ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, false, &req);
if (ret)
return ret;
- ret = vb2_core_qbuf(q, b->index, b, req);
+ ret = vb2_core_qbuf(q, vb, b, req);
if (req)
media_request_put(req);
return ret;
@@ -873,7 +874,15 @@ EXPORT_SYMBOL_GPL(vb2_streamoff);
int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
{
- return vb2_core_expbuf(q, &eb->fd, eb->type, eb->index,
+ struct vb2_buffer *vb;
+
+ if (eb->index >= q->num_buffers) {
+ dprintk(q, 1, "buffer index out of range\n");
+ return -EINVAL;
+ }
+ vb = q->bufs[eb->index];
+
+ return vb2_core_expbuf(q, &eb->fd, eb->type, vb,
eb->plane, eb->flags);
}
EXPORT_SYMBOL_GPL(vb2_expbuf);
diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
index 909df82fed33..b322ef179f05 100644
--- a/drivers/media/dvb-core/dvb_vb2.c
+++ b/drivers/media/dvb-core/dvb_vb2.c
@@ -360,7 +360,7 @@ int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
dprintk(1, "[%s] buffer index out of range\n", ctx->name);
return -EINVAL;
}
- vb2_core_querybuf(&ctx->vb_q, b->index, b);
+ vb2_core_querybuf(&ctx->vb_q, q->bufs[b->index], b);
dprintk(3, "[%s] index=%d\n", ctx->name, b->index);
return 0;
}
@@ -370,7 +370,7 @@ int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp)
struct vb2_queue *q = &ctx->vb_q;
int ret;
- ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, exp->index,
+ ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, q->bufs[exp->index],
0, exp->flags);
if (ret) {
dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
@@ -391,7 +391,7 @@ int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
dprintk(1, "[%s] buffer index out of range\n", ctx->name);
return -EINVAL;
}
- ret = vb2_core_qbuf(&ctx->vb_q, b->index, b, NULL);
+ ret = vb2_core_qbuf(&ctx->vb_q, q->bufs[b->index], b, NULL);
if (ret) {
dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
b->index, ret);
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 4b6a9d2ea372..cd3ff1cd759d 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -747,7 +747,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
/**
* vb2_core_querybuf() - query video buffer information.
* @q: pointer to &struct vb2_queue with videobuf2 queue.
- * @index: id number of the buffer.
+ * @vb: pointer to struct &vb2_buffer.
* @pb: buffer struct passed from userspace.
*
* Videobuf2 core helper to implement VIDIOC_QUERYBUF() operation. It is called
@@ -759,7 +759,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
*
* Return: returns zero on success; an error code otherwise.
*/
-void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb);
+void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
/**
* vb2_core_reqbufs() - Initiate streaming.
@@ -823,7 +823,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
* vb2_core_prepare_buf() - Pass ownership of a buffer from userspace
* to the kernel.
* @q: pointer to &struct vb2_queue with videobuf2 queue.
- * @index: id number of the buffer.
+ * @vb: pointer to struct &vb2_buffer.
* @pb: buffer structure passed from userspace to
* &v4l2_ioctl_ops->vidioc_prepare_buf handler in driver.
*
@@ -839,13 +839,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
*
* Return: returns zero on success; an error code otherwise.
*/
-int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
+int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
/**
* vb2_core_qbuf() - Queue a buffer from userspace
*
* @q: pointer to &struct vb2_queue with videobuf2 queue.
- * @index: id number of the buffer
+ * @vb: pointer to struct &vb2_buffer.
* @pb: buffer structure passed from userspace to
* v4l2_ioctl_ops->vidioc_qbuf handler in driver
* @req: pointer to &struct media_request, may be NULL.
@@ -867,7 +867,7 @@ int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
*
* Return: returns zero on success; an error code otherwise.
*/
-int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
+int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
struct media_request *req);
/**
@@ -931,7 +931,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
* @fd: pointer to the file descriptor associated with DMABUF
* (set by driver).
* @type: buffer type.
- * @index: id number of the buffer.
+ * @vb: pointer to struct &vb2_buffer.
* @plane: index of the plane to be exported, 0 for single plane queues
* @flags: file flags for newly created file, as defined at
* include/uapi/asm-generic/fcntl.h.
@@ -945,7 +945,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
* Return: returns zero on success; an error code otherwise.
*/
int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
- unsigned int index, unsigned int plane, unsigned int flags);
+ struct vb2_buffer *vb, unsigned int plane, unsigned int flags);
/**
* vb2_core_queue_init() - initialize a videobuf2 queue
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 04/56] media: videobuf2: Use vb2_buffer instead of index
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Directly use vb2_buffer pointer instead of index inside queue array.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 40 +++++----------
.../media/common/videobuf2/videobuf2-v4l2.c | 51 +++++++++++--------
drivers/media/dvb-core/dvb_vb2.c | 6 +--
include/media/videobuf2-core.h | 16 +++---
4 files changed, 53 insertions(+), 60 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 47dba2a20d73..968b7c0e7934 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -654,9 +654,9 @@ static bool __buffers_in_use(struct vb2_queue *q)
return false;
}
-void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb)
+void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
{
- call_void_bufop(q, fill_user_buffer, q->bufs[index], pb);
+ call_void_bufop(q, fill_user_buffer, vb, pb);
}
EXPORT_SYMBOL_GPL(vb2_core_querybuf);
@@ -1490,9 +1490,6 @@ static void vb2_req_unprepare(struct media_request_object *obj)
WARN_ON(!vb->req_obj.req);
}
-int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
- struct media_request *req);
-
static void vb2_req_queue(struct media_request_object *obj)
{
struct vb2_buffer *vb = container_of(obj, struct vb2_buffer, req_obj);
@@ -1507,7 +1504,7 @@ static void vb2_req_queue(struct media_request_object *obj)
* set. We just ignore that, and expect this will be caught the
* next time vb2_req_prepare() is called.
*/
- err = vb2_core_qbuf(vb->vb2_queue, vb->index, NULL, NULL);
+ err = vb2_core_qbuf(vb->vb2_queue, vb, NULL, NULL);
WARN_ON_ONCE(err && err != -EIO);
mutex_unlock(vb->vb2_queue->lock);
}
@@ -1562,12 +1559,10 @@ unsigned int vb2_request_buffer_cnt(struct media_request *req)
}
EXPORT_SYMBOL_GPL(vb2_request_buffer_cnt);
-int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb)
+int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
{
- struct vb2_buffer *vb;
int ret;
- vb = q->bufs[index];
if (vb->state != VB2_BUF_STATE_DEQUEUED) {
dprintk(q, 1, "invalid buffer state %s\n",
vb2_state_name(vb->state));
@@ -1654,10 +1649,9 @@ static int vb2_start_streaming(struct vb2_queue *q)
return ret;
}
-int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
+int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
struct media_request *req)
{
- struct vb2_buffer *vb;
enum vb2_buffer_state orig_state;
int ret;
@@ -1666,8 +1660,6 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
return -EIO;
}
- vb = q->bufs[index];
-
if (!req && vb->state != VB2_BUF_STATE_IN_REQUEST &&
q->requires_requests) {
dprintk(q, 1, "qbuf requires a request\n");
@@ -2240,9 +2232,8 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
}
int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
- unsigned int index, unsigned int plane, unsigned int flags)
+ struct vb2_buffer *vb, unsigned int plane, unsigned int flags)
{
- struct vb2_buffer *vb = NULL;
struct vb2_plane *vb_plane;
int ret;
struct dma_buf *dbuf;
@@ -2267,13 +2258,6 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
return -EINVAL;
}
- if (index >= q->num_buffers) {
- dprintk(q, 1, "buffer index out of range\n");
- return -EINVAL;
- }
-
- vb = q->bufs[index];
-
if (plane >= vb->num_planes) {
dprintk(q, 1, "buffer plane out of range\n");
return -EINVAL;
@@ -2292,20 +2276,20 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
flags & O_ACCMODE);
if (IS_ERR_OR_NULL(dbuf)) {
dprintk(q, 1, "failed to export buffer %d, plane %d\n",
- index, plane);
+ vb->index, plane);
return -EINVAL;
}
ret = dma_buf_fd(dbuf, flags & ~O_ACCMODE);
if (ret < 0) {
dprintk(q, 3, "buffer %d, plane %d failed to export (%d)\n",
- index, plane, ret);
+ vb->index, plane, ret);
dma_buf_put(dbuf);
return ret;
}
dprintk(q, 3, "buffer %d, plane %d exported as %d descriptor\n",
- index, plane, ret);
+ vb->index, plane, ret);
*fd = ret;
return 0;
@@ -2710,7 +2694,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
* Queue all buffers.
*/
for (i = 0; i < q->num_buffers; i++) {
- ret = vb2_core_qbuf(q, i, NULL, NULL);
+ ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
if (ret)
goto err_reqbufs;
fileio->bufs[i].queued = 1;
@@ -2895,7 +2879,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
if (copy_timestamp)
b->timestamp = ktime_get_ns();
- ret = vb2_core_qbuf(q, index, NULL, NULL);
+ ret = vb2_core_qbuf(q, b, NULL, NULL);
dprintk(q, 5, "vb2_qbuf result: %d\n", ret);
if (ret)
return ret;
@@ -2998,7 +2982,7 @@ static int vb2_thread(void *data)
if (copy_timestamp)
vb->timestamp = ktime_get_ns();
if (!threadio->stop)
- ret = vb2_core_qbuf(q, vb->index, NULL, NULL);
+ ret = vb2_core_qbuf(q, vb, NULL, NULL);
call_void_qop(q, wait_prepare, q);
if (ret || threadio->stop)
break;
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index c7a54d82a55e..d19d82a75ac6 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -364,13 +364,12 @@ static void set_buffer_cache_hints(struct vb2_queue *q,
}
static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
- struct v4l2_buffer *b, bool is_prepare,
- struct media_request **p_req)
+ struct vb2_buffer *vb, struct v4l2_buffer *b,
+ bool is_prepare, struct media_request **p_req)
{
const char *opname = is_prepare ? "prepare_buf" : "qbuf";
struct media_request *req;
struct vb2_v4l2_buffer *vbuf;
- struct vb2_buffer *vb;
int ret;
if (b->type != q->type) {
@@ -378,23 +377,11 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
return -EINVAL;
}
- if (b->index >= q->num_buffers) {
- dprintk(q, 1, "%s: buffer index out of range\n", opname);
- return -EINVAL;
- }
-
- if (q->bufs[b->index] == NULL) {
- /* Should never happen */
- dprintk(q, 1, "%s: buffer is NULL\n", opname);
- return -EINVAL;
- }
-
if (b->memory != q->memory) {
dprintk(q, 1, "%s: invalid memory type\n", opname);
return -EINVAL;
}
- vb = q->bufs[b->index];
vbuf = to_vb2_v4l2_buffer(vb);
ret = __verify_planes_array(vb, b);
if (ret)
@@ -667,7 +654,7 @@ int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b)
vb = q->bufs[b->index];
ret = __verify_planes_array(vb, b);
if (!ret)
- vb2_core_querybuf(q, b->index, b);
+ vb2_core_querybuf(q, vb, b);
return ret;
}
EXPORT_SYMBOL(vb2_querybuf);
@@ -723,6 +710,7 @@ EXPORT_SYMBOL_GPL(vb2_reqbufs);
int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
struct v4l2_buffer *b)
{
+ struct vb2_buffer *vb;
int ret;
if (vb2_fileio_is_active(q)) {
@@ -733,9 +721,15 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
if (b->flags & V4L2_BUF_FLAG_REQUEST_FD)
return -EINVAL;
- ret = vb2_queue_or_prepare_buf(q, mdev, b, true, NULL);
+ if (b->index >= q->num_buffers) {
+ dprintk(q, 1, "buffer index out of range\n");
+ return -EINVAL;
+ }
+ vb = q->bufs[b->index];
- return ret ? ret : vb2_core_prepare_buf(q, b->index, b);
+ ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, true, NULL);
+
+ return ret ? ret : vb2_core_prepare_buf(q, vb, b);
}
EXPORT_SYMBOL_GPL(vb2_prepare_buf);
@@ -803,6 +797,7 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
struct v4l2_buffer *b)
{
struct media_request *req = NULL;
+ struct vb2_buffer *vb;
int ret;
if (vb2_fileio_is_active(q)) {
@@ -810,10 +805,16 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
return -EBUSY;
}
- ret = vb2_queue_or_prepare_buf(q, mdev, b, false, &req);
+ if (b->index >= q->num_buffers) {
+ dprintk(q, 1, "buffer index out of range\n");
+ return -EINVAL;
+ }
+ vb = q->bufs[b->index];
+
+ ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, false, &req);
if (ret)
return ret;
- ret = vb2_core_qbuf(q, b->index, b, req);
+ ret = vb2_core_qbuf(q, vb, b, req);
if (req)
media_request_put(req);
return ret;
@@ -873,7 +874,15 @@ EXPORT_SYMBOL_GPL(vb2_streamoff);
int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
{
- return vb2_core_expbuf(q, &eb->fd, eb->type, eb->index,
+ struct vb2_buffer *vb;
+
+ if (eb->index >= q->num_buffers) {
+ dprintk(q, 1, "buffer index out of range\n");
+ return -EINVAL;
+ }
+ vb = q->bufs[eb->index];
+
+ return vb2_core_expbuf(q, &eb->fd, eb->type, vb,
eb->plane, eb->flags);
}
EXPORT_SYMBOL_GPL(vb2_expbuf);
diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
index 909df82fed33..b322ef179f05 100644
--- a/drivers/media/dvb-core/dvb_vb2.c
+++ b/drivers/media/dvb-core/dvb_vb2.c
@@ -360,7 +360,7 @@ int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
dprintk(1, "[%s] buffer index out of range\n", ctx->name);
return -EINVAL;
}
- vb2_core_querybuf(&ctx->vb_q, b->index, b);
+ vb2_core_querybuf(&ctx->vb_q, q->bufs[b->index], b);
dprintk(3, "[%s] index=%d\n", ctx->name, b->index);
return 0;
}
@@ -370,7 +370,7 @@ int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp)
struct vb2_queue *q = &ctx->vb_q;
int ret;
- ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, exp->index,
+ ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, q->bufs[exp->index],
0, exp->flags);
if (ret) {
dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
@@ -391,7 +391,7 @@ int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
dprintk(1, "[%s] buffer index out of range\n", ctx->name);
return -EINVAL;
}
- ret = vb2_core_qbuf(&ctx->vb_q, b->index, b, NULL);
+ ret = vb2_core_qbuf(&ctx->vb_q, q->bufs[b->index], b, NULL);
if (ret) {
dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
b->index, ret);
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 4b6a9d2ea372..cd3ff1cd759d 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -747,7 +747,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
/**
* vb2_core_querybuf() - query video buffer information.
* @q: pointer to &struct vb2_queue with videobuf2 queue.
- * @index: id number of the buffer.
+ * @vb: pointer to struct &vb2_buffer.
* @pb: buffer struct passed from userspace.
*
* Videobuf2 core helper to implement VIDIOC_QUERYBUF() operation. It is called
@@ -759,7 +759,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
*
* Return: returns zero on success; an error code otherwise.
*/
-void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb);
+void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
/**
* vb2_core_reqbufs() - Initiate streaming.
@@ -823,7 +823,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
* vb2_core_prepare_buf() - Pass ownership of a buffer from userspace
* to the kernel.
* @q: pointer to &struct vb2_queue with videobuf2 queue.
- * @index: id number of the buffer.
+ * @vb: pointer to struct &vb2_buffer.
* @pb: buffer structure passed from userspace to
* &v4l2_ioctl_ops->vidioc_prepare_buf handler in driver.
*
@@ -839,13 +839,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
*
* Return: returns zero on success; an error code otherwise.
*/
-int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
+int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
/**
* vb2_core_qbuf() - Queue a buffer from userspace
*
* @q: pointer to &struct vb2_queue with videobuf2 queue.
- * @index: id number of the buffer
+ * @vb: pointer to struct &vb2_buffer.
* @pb: buffer structure passed from userspace to
* v4l2_ioctl_ops->vidioc_qbuf handler in driver
* @req: pointer to &struct media_request, may be NULL.
@@ -867,7 +867,7 @@ int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
*
* Return: returns zero on success; an error code otherwise.
*/
-int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
+int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
struct media_request *req);
/**
@@ -931,7 +931,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
* @fd: pointer to the file descriptor associated with DMABUF
* (set by driver).
* @type: buffer type.
- * @index: id number of the buffer.
+ * @vb: pointer to struct &vb2_buffer.
* @plane: index of the plane to be exported, 0 for single plane queues
* @flags: file flags for newly created file, as defined at
* include/uapi/asm-generic/fcntl.h.
@@ -945,7 +945,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
* Return: returns zero on success; an error code otherwise.
*/
int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
- unsigned int index, unsigned int plane, unsigned int flags);
+ struct vb2_buffer *vb, unsigned int plane, unsigned int flags);
/**
* vb2_core_queue_init() - initialize a videobuf2 queue
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 05/56] media: videobuf2: Access vb2_queue bufs array through helper functions
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
This patch adds 2 helpers functions to add and remove vb2 buffers
from a queue. With these 2 and vb2_get_buffer(), bufs field of
struct vb2_queue becomes like a private member of the structure.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer in preparation for when buffers can be deleted.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 151 +++++++++++++-----
.../media/common/videobuf2/videobuf2-v4l2.c | 50 ++++--
2 files changed, 149 insertions(+), 52 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 968b7c0e7934..b406a30a9b35 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -408,6 +408,31 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
vb->skip_cache_sync_on_finish = 1;
}
+/**
+ * vb2_queue_add_buffer() - add a buffer to a queue
+ * @q: pointer to &struct vb2_queue with videobuf2 queue.
+ * @vb: pointer to &struct vb2_buffer to be added to the queue.
+ * @index: index where add vb2_buffer in the queue
+ */
+static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
+{
+ WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
+
+ q->bufs[index] = vb;
+ vb->index = index;
+ vb->vb2_queue = q;
+}
+
+/**
+ * vb2_queue_remove_buffer() - remove a buffer from a queue
+ * @vb: pointer to &struct vb2_buffer to be removed from the queue.
+ */
+static void vb2_queue_remove_buffer(struct vb2_buffer *vb)
+{
+ vb->vb2_queue->bufs[vb->index] = NULL;
+ vb->vb2_queue = NULL;
+}
+
/*
* __vb2_queue_alloc() - allocate vb2 buffer structures and (for MMAP type)
* video buffer memory for all buffers/planes on the queue and initializes the
@@ -436,9 +461,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
}
vb->state = VB2_BUF_STATE_DEQUEUED;
- vb->vb2_queue = q;
vb->num_planes = num_planes;
- vb->index = q->num_buffers + buffer;
vb->type = q->type;
vb->memory = memory;
init_buffer_cache_hints(q, vb);
@@ -446,9 +469,9 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
vb->planes[plane].length = plane_sizes[plane];
vb->planes[plane].min_length = plane_sizes[plane];
}
- call_void_bufop(q, init_buffer, vb);
- q->bufs[vb->index] = vb;
+ vb2_queue_add_buffer(q, vb, q->num_buffers + buffer);
+ call_void_bufop(q, init_buffer, vb);
/* Allocate video buffer memory for the MMAP type */
if (memory == VB2_MEMORY_MMAP) {
@@ -456,7 +479,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
if (ret) {
dprintk(q, 1, "failed allocating memory for buffer %d\n",
buffer);
- q->bufs[vb->index] = NULL;
+ vb2_queue_remove_buffer(vb);
kfree(vb);
break;
}
@@ -471,7 +494,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
dprintk(q, 1, "buffer %d %p initialization failed\n",
buffer, vb);
__vb2_buf_mem_free(vb);
- q->bufs[vb->index] = NULL;
+ vb2_queue_remove_buffer(vb);
kfree(vb);
break;
}
@@ -494,7 +517,7 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
++buffer) {
- vb = q->bufs[buffer];
+ vb = vb2_get_buffer(q, buffer);
if (!vb)
continue;
@@ -522,7 +545,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
/* Call driver-provided cleanup function for each buffer, if provided */
for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
++buffer) {
- struct vb2_buffer *vb = q->bufs[buffer];
+ struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
if (vb && vb->planes[0].mem_priv)
call_void_vb_qop(vb, buf_cleanup, vb);
@@ -563,15 +586,20 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
q->cnt_unprepare_streaming = 0;
}
for (buffer = 0; buffer < q->num_buffers; ++buffer) {
- struct vb2_buffer *vb = q->bufs[buffer];
- bool unbalanced = vb->cnt_mem_alloc != vb->cnt_mem_put ||
- vb->cnt_mem_prepare != vb->cnt_mem_finish ||
- vb->cnt_mem_get_userptr != vb->cnt_mem_put_userptr ||
- vb->cnt_mem_attach_dmabuf != vb->cnt_mem_detach_dmabuf ||
- vb->cnt_mem_map_dmabuf != vb->cnt_mem_unmap_dmabuf ||
- vb->cnt_buf_queue != vb->cnt_buf_done ||
- vb->cnt_buf_prepare != vb->cnt_buf_finish ||
- vb->cnt_buf_init != vb->cnt_buf_cleanup;
+ struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+ bool unbalanced;
+
+ if (!vb)
+ continue;
+
+ unbalanced = vb->cnt_mem_alloc != vb->cnt_mem_put ||
+ vb->cnt_mem_prepare != vb->cnt_mem_finish ||
+ vb->cnt_mem_get_userptr != vb->cnt_mem_put_userptr ||
+ vb->cnt_mem_attach_dmabuf != vb->cnt_mem_detach_dmabuf ||
+ vb->cnt_mem_map_dmabuf != vb->cnt_mem_unmap_dmabuf ||
+ vb->cnt_buf_queue != vb->cnt_buf_done ||
+ vb->cnt_buf_prepare != vb->cnt_buf_finish ||
+ vb->cnt_buf_init != vb->cnt_buf_cleanup;
if (unbalanced) {
pr_info("unbalanced counters for queue %p, buffer %d:\n",
@@ -611,8 +639,13 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
/* Free vb2 buffers */
for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
++buffer) {
- kfree(q->bufs[buffer]);
- q->bufs[buffer] = NULL;
+ struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+
+ if (!vb)
+ continue;
+
+ vb2_queue_remove_buffer(vb);
+ kfree(vb);
}
q->num_buffers -= buffers;
@@ -648,7 +681,12 @@ static bool __buffers_in_use(struct vb2_queue *q)
{
unsigned int buffer;
for (buffer = 0; buffer < q->num_buffers; ++buffer) {
- if (vb2_buffer_in_use(q, q->bufs[buffer]))
+ struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+
+ if (!vb)
+ continue;
+
+ if (vb2_buffer_in_use(q, vb))
return true;
}
return false;
@@ -1633,7 +1671,11 @@ static int vb2_start_streaming(struct vb2_queue *q)
* correctly return them to vb2.
*/
for (i = 0; i < q->num_buffers; ++i) {
- vb = q->bufs[i];
+ vb = vb2_get_buffer(q, i);
+
+ if (!vb)
+ continue;
+
if (vb->state == VB2_BUF_STATE_ACTIVE)
vb2_buffer_done(vb, VB2_BUF_STATE_QUEUED);
}
@@ -2034,12 +2076,18 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* to vb2 in stop_streaming().
*/
if (WARN_ON(atomic_read(&q->owned_by_drv_count))) {
- for (i = 0; i < q->num_buffers; ++i)
- if (q->bufs[i]->state == VB2_BUF_STATE_ACTIVE) {
- pr_warn("driver bug: stop_streaming operation is leaving buf %p in active state\n",
- q->bufs[i]);
- vb2_buffer_done(q->bufs[i], VB2_BUF_STATE_ERROR);
+ for (i = 0; i < q->num_buffers; ++i) {
+ struct vb2_buffer *vb = vb2_get_buffer(q, i);
+
+ if (!vb)
+ continue;
+
+ if (vb->state == VB2_BUF_STATE_ACTIVE) {
+ pr_warn("driver bug: stop_streaming operation is leaving buffer %u in active state\n",
+ vb->index);
+ vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
}
+ }
/* Must be zero now */
WARN_ON(atomic_read(&q->owned_by_drv_count));
}
@@ -2073,9 +2121,14 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* be changed, so we can't move the buf_finish() to __vb2_dqbuf().
*/
for (i = 0; i < q->num_buffers; ++i) {
- struct vb2_buffer *vb = q->bufs[i];
- struct media_request *req = vb->req_obj.req;
+ struct vb2_buffer *vb;
+ struct media_request *req;
+ vb = vb2_get_buffer(q, i);
+ if (!vb)
+ continue;
+
+ req = vb->req_obj.req;
/*
* If a request is associated with this buffer, then
* call buf_request_cancel() to give the driver to complete()
@@ -2224,10 +2277,12 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
buffer = (offset >> PLANE_INDEX_SHIFT) & BUFFER_INDEX_MASK;
*plane = (offset >> PAGE_SHIFT) & PLANE_INDEX_MASK;
- if (buffer >= q->num_buffers || *plane >= q->bufs[buffer]->num_planes)
+ *vb = vb2_get_buffer(q, buffer);
+ if (!*vb)
+ return -EINVAL;
+ if (*plane >= (*vb)->num_planes)
return -EINVAL;
- *vb = q->bufs[buffer];
return 0;
}
@@ -2615,6 +2670,7 @@ struct vb2_fileio_data {
static int __vb2_init_fileio(struct vb2_queue *q, int read)
{
struct vb2_fileio_data *fileio;
+ struct vb2_buffer *vb;
int i, ret;
unsigned int count = 0;
@@ -2665,11 +2721,18 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
if (ret)
goto err_kfree;
+ /*
+ * Userspace can never add or delete buffers later, so there
+ * will never be holes. It is safe to assume that vb2_get_buffer(q, 0)
+ * will always return a valid vb pointer
+ */
+ vb = vb2_get_buffer(q, 0);
+
/*
* Check if plane_count is correct
* (multiplane buffers are not supported).
*/
- if (q->bufs[0]->num_planes != 1) {
+ if (vb->num_planes != 1) {
ret = -EBUSY;
goto err_reqbufs;
}
@@ -2678,12 +2741,15 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
* Get kernel address of each buffer.
*/
for (i = 0; i < q->num_buffers; i++) {
- fileio->bufs[i].vaddr = vb2_plane_vaddr(q->bufs[i], 0);
+ /* vb can never be NULL when using fileio. */
+ vb = vb2_get_buffer(q, i);
+
+ fileio->bufs[i].vaddr = vb2_plane_vaddr(vb, 0);
if (fileio->bufs[i].vaddr == NULL) {
ret = -EINVAL;
goto err_reqbufs;
}
- fileio->bufs[i].size = vb2_plane_size(q->bufs[i], 0);
+ fileio->bufs[i].size = vb2_plane_size(vb, 0);
}
/*
@@ -2811,15 +2877,17 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
fileio->cur_index = index;
buf = &fileio->bufs[index];
- b = q->bufs[index];
+
+ /* b can never be NULL when using fileio. */
+ b = vb2_get_buffer(q, index);
/*
* Get number of bytes filled by the driver
*/
buf->pos = 0;
buf->queued = 0;
- buf->size = read ? vb2_get_plane_payload(q->bufs[index], 0)
- : vb2_plane_size(q->bufs[index], 0);
+ buf->size = read ? vb2_get_plane_payload(b, 0)
+ : vb2_plane_size(b, 0);
/* Compensate for data_offset on read in the multiplanar case. */
if (is_multiplanar && read &&
b->planes[0].data_offset < buf->size) {
@@ -2862,7 +2930,8 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
* Queue next buffer if required.
*/
if (buf->pos == buf->size || (!read && fileio->write_immediately)) {
- struct vb2_buffer *b = q->bufs[index];
+ /* b can never be NULL when using fileio. */
+ struct vb2_buffer *b = vb2_get_buffer(q, index);
/*
* Check if this is the last buffer to read.
@@ -2889,7 +2958,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
*/
buf->pos = 0;
buf->queued = 1;
- buf->size = vb2_plane_size(q->bufs[index], 0);
+ buf->size = vb2_plane_size(b, 0);
fileio->q_count += 1;
/*
* If we are queuing up buffers for the first time, then
@@ -2960,7 +3029,9 @@ static int vb2_thread(void *data)
* Call vb2_dqbuf to get buffer back.
*/
if (prequeue) {
- vb = q->bufs[index++];
+ vb = vb2_get_buffer(q, index++);
+ if (!vb)
+ continue;
prequeue--;
} else {
call_void_qop(q, wait_finish, q);
@@ -2969,7 +3040,7 @@ static int vb2_thread(void *data)
call_void_qop(q, wait_prepare, q);
dprintk(q, 5, "file io: vb2_dqbuf result: %d\n", ret);
if (!ret)
- vb = q->bufs[index];
+ vb = vb2_get_buffer(q, index);
}
if (ret || threadio->stop)
break;
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index d19d82a75ac6..2ffb097bf00a 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -377,6 +377,12 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
return -EINVAL;
}
+ vb = vb2_get_buffer(q, b->index);
+ if (!vb) {
+ dprintk(q, 1, "%s: buffer %u is NULL\n", opname, b->index);
+ return -EINVAL;
+ }
+
if (b->memory != q->memory) {
dprintk(q, 1, "%s: invalid memory type\n", opname);
return -EINVAL;
@@ -615,11 +621,22 @@ static const struct vb2_buf_ops v4l2_buf_ops = {
struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp)
{
unsigned int i;
+ struct vb2_buffer *vb2;
- for (i = 0; i < q->num_buffers; i++)
- if (q->bufs[i]->copied_timestamp &&
- q->bufs[i]->timestamp == timestamp)
- return vb2_get_buffer(q, i);
+ /*
+ * This loop doesn't scale if there is a really large number of buffers.
+ * Maybe something more efficient will be needed in this case.
+ */
+ for (i = 0; i < q->num_buffers; i++) {
+ vb2 = vb2_get_buffer(q, i);
+
+ if (!vb2)
+ continue;
+
+ if (vb2->copied_timestamp &&
+ vb2->timestamp == timestamp)
+ return vb2;
+ }
return NULL;
}
EXPORT_SYMBOL_GPL(vb2_find_buffer);
@@ -647,11 +664,12 @@ int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b)
return -EINVAL;
}
- if (b->index >= q->num_buffers) {
- dprintk(q, 1, "buffer index out of range\n");
+ vb = vb2_get_buffer(q, b->index);
+ if (!vb) {
+ dprintk(q, 1, "can't find the requested buffer %u\n", b->index);
return -EINVAL;
}
- vb = q->bufs[b->index];
+
ret = __verify_planes_array(vb, b);
if (!ret)
vb2_core_querybuf(q, vb, b);
@@ -721,11 +739,11 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
if (b->flags & V4L2_BUF_FLAG_REQUEST_FD)
return -EINVAL;
- if (b->index >= q->num_buffers) {
- dprintk(q, 1, "buffer index out of range\n");
+ vb = vb2_get_buffer(q, b->index);
+ if (!vb) {
+ dprintk(q, 1, "can't find the requested buffer %u\n", b->index);
return -EINVAL;
}
- vb = q->bufs[b->index];
ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, true, NULL);
@@ -809,7 +827,11 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
dprintk(q, 1, "buffer index out of range\n");
return -EINVAL;
}
- vb = q->bufs[b->index];
+ vb = vb2_get_buffer(q, b->index);
+ if (!vb) {
+ dprintk(q, 1, "can't find the requested buffer %u\n", b->index);
+ return -EINVAL;
+ }
ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, false, &req);
if (ret)
@@ -880,7 +902,11 @@ int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
dprintk(q, 1, "buffer index out of range\n");
return -EINVAL;
}
- vb = q->bufs[eb->index];
+ vb = vb2_get_buffer(q, eb->index);
+ if (!vb) {
+ dprintk(q, 1, "can't find the requested buffer %u\n", eb->index);
+ return -EINVAL;
+ }
return vb2_core_expbuf(q, &eb->fd, eb->type, vb,
eb->plane, eb->flags);
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 05/56] media: videobuf2: Access vb2_queue bufs array through helper functions
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
This patch adds 2 helpers functions to add and remove vb2 buffers
from a queue. With these 2 and vb2_get_buffer(), bufs field of
struct vb2_queue becomes like a private member of the structure.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer in preparation for when buffers can be deleted.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 151 +++++++++++++-----
.../media/common/videobuf2/videobuf2-v4l2.c | 50 ++++--
2 files changed, 149 insertions(+), 52 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 968b7c0e7934..b406a30a9b35 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -408,6 +408,31 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
vb->skip_cache_sync_on_finish = 1;
}
+/**
+ * vb2_queue_add_buffer() - add a buffer to a queue
+ * @q: pointer to &struct vb2_queue with videobuf2 queue.
+ * @vb: pointer to &struct vb2_buffer to be added to the queue.
+ * @index: index where add vb2_buffer in the queue
+ */
+static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
+{
+ WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
+
+ q->bufs[index] = vb;
+ vb->index = index;
+ vb->vb2_queue = q;
+}
+
+/**
+ * vb2_queue_remove_buffer() - remove a buffer from a queue
+ * @vb: pointer to &struct vb2_buffer to be removed from the queue.
+ */
+static void vb2_queue_remove_buffer(struct vb2_buffer *vb)
+{
+ vb->vb2_queue->bufs[vb->index] = NULL;
+ vb->vb2_queue = NULL;
+}
+
/*
* __vb2_queue_alloc() - allocate vb2 buffer structures and (for MMAP type)
* video buffer memory for all buffers/planes on the queue and initializes the
@@ -436,9 +461,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
}
vb->state = VB2_BUF_STATE_DEQUEUED;
- vb->vb2_queue = q;
vb->num_planes = num_planes;
- vb->index = q->num_buffers + buffer;
vb->type = q->type;
vb->memory = memory;
init_buffer_cache_hints(q, vb);
@@ -446,9 +469,9 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
vb->planes[plane].length = plane_sizes[plane];
vb->planes[plane].min_length = plane_sizes[plane];
}
- call_void_bufop(q, init_buffer, vb);
- q->bufs[vb->index] = vb;
+ vb2_queue_add_buffer(q, vb, q->num_buffers + buffer);
+ call_void_bufop(q, init_buffer, vb);
/* Allocate video buffer memory for the MMAP type */
if (memory == VB2_MEMORY_MMAP) {
@@ -456,7 +479,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
if (ret) {
dprintk(q, 1, "failed allocating memory for buffer %d\n",
buffer);
- q->bufs[vb->index] = NULL;
+ vb2_queue_remove_buffer(vb);
kfree(vb);
break;
}
@@ -471,7 +494,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
dprintk(q, 1, "buffer %d %p initialization failed\n",
buffer, vb);
__vb2_buf_mem_free(vb);
- q->bufs[vb->index] = NULL;
+ vb2_queue_remove_buffer(vb);
kfree(vb);
break;
}
@@ -494,7 +517,7 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
++buffer) {
- vb = q->bufs[buffer];
+ vb = vb2_get_buffer(q, buffer);
if (!vb)
continue;
@@ -522,7 +545,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
/* Call driver-provided cleanup function for each buffer, if provided */
for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
++buffer) {
- struct vb2_buffer *vb = q->bufs[buffer];
+ struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
if (vb && vb->planes[0].mem_priv)
call_void_vb_qop(vb, buf_cleanup, vb);
@@ -563,15 +586,20 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
q->cnt_unprepare_streaming = 0;
}
for (buffer = 0; buffer < q->num_buffers; ++buffer) {
- struct vb2_buffer *vb = q->bufs[buffer];
- bool unbalanced = vb->cnt_mem_alloc != vb->cnt_mem_put ||
- vb->cnt_mem_prepare != vb->cnt_mem_finish ||
- vb->cnt_mem_get_userptr != vb->cnt_mem_put_userptr ||
- vb->cnt_mem_attach_dmabuf != vb->cnt_mem_detach_dmabuf ||
- vb->cnt_mem_map_dmabuf != vb->cnt_mem_unmap_dmabuf ||
- vb->cnt_buf_queue != vb->cnt_buf_done ||
- vb->cnt_buf_prepare != vb->cnt_buf_finish ||
- vb->cnt_buf_init != vb->cnt_buf_cleanup;
+ struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+ bool unbalanced;
+
+ if (!vb)
+ continue;
+
+ unbalanced = vb->cnt_mem_alloc != vb->cnt_mem_put ||
+ vb->cnt_mem_prepare != vb->cnt_mem_finish ||
+ vb->cnt_mem_get_userptr != vb->cnt_mem_put_userptr ||
+ vb->cnt_mem_attach_dmabuf != vb->cnt_mem_detach_dmabuf ||
+ vb->cnt_mem_map_dmabuf != vb->cnt_mem_unmap_dmabuf ||
+ vb->cnt_buf_queue != vb->cnt_buf_done ||
+ vb->cnt_buf_prepare != vb->cnt_buf_finish ||
+ vb->cnt_buf_init != vb->cnt_buf_cleanup;
if (unbalanced) {
pr_info("unbalanced counters for queue %p, buffer %d:\n",
@@ -611,8 +639,13 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
/* Free vb2 buffers */
for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
++buffer) {
- kfree(q->bufs[buffer]);
- q->bufs[buffer] = NULL;
+ struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+
+ if (!vb)
+ continue;
+
+ vb2_queue_remove_buffer(vb);
+ kfree(vb);
}
q->num_buffers -= buffers;
@@ -648,7 +681,12 @@ static bool __buffers_in_use(struct vb2_queue *q)
{
unsigned int buffer;
for (buffer = 0; buffer < q->num_buffers; ++buffer) {
- if (vb2_buffer_in_use(q, q->bufs[buffer]))
+ struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+
+ if (!vb)
+ continue;
+
+ if (vb2_buffer_in_use(q, vb))
return true;
}
return false;
@@ -1633,7 +1671,11 @@ static int vb2_start_streaming(struct vb2_queue *q)
* correctly return them to vb2.
*/
for (i = 0; i < q->num_buffers; ++i) {
- vb = q->bufs[i];
+ vb = vb2_get_buffer(q, i);
+
+ if (!vb)
+ continue;
+
if (vb->state == VB2_BUF_STATE_ACTIVE)
vb2_buffer_done(vb, VB2_BUF_STATE_QUEUED);
}
@@ -2034,12 +2076,18 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* to vb2 in stop_streaming().
*/
if (WARN_ON(atomic_read(&q->owned_by_drv_count))) {
- for (i = 0; i < q->num_buffers; ++i)
- if (q->bufs[i]->state == VB2_BUF_STATE_ACTIVE) {
- pr_warn("driver bug: stop_streaming operation is leaving buf %p in active state\n",
- q->bufs[i]);
- vb2_buffer_done(q->bufs[i], VB2_BUF_STATE_ERROR);
+ for (i = 0; i < q->num_buffers; ++i) {
+ struct vb2_buffer *vb = vb2_get_buffer(q, i);
+
+ if (!vb)
+ continue;
+
+ if (vb->state == VB2_BUF_STATE_ACTIVE) {
+ pr_warn("driver bug: stop_streaming operation is leaving buffer %u in active state\n",
+ vb->index);
+ vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
}
+ }
/* Must be zero now */
WARN_ON(atomic_read(&q->owned_by_drv_count));
}
@@ -2073,9 +2121,14 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* be changed, so we can't move the buf_finish() to __vb2_dqbuf().
*/
for (i = 0; i < q->num_buffers; ++i) {
- struct vb2_buffer *vb = q->bufs[i];
- struct media_request *req = vb->req_obj.req;
+ struct vb2_buffer *vb;
+ struct media_request *req;
+ vb = vb2_get_buffer(q, i);
+ if (!vb)
+ continue;
+
+ req = vb->req_obj.req;
/*
* If a request is associated with this buffer, then
* call buf_request_cancel() to give the driver to complete()
@@ -2224,10 +2277,12 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
buffer = (offset >> PLANE_INDEX_SHIFT) & BUFFER_INDEX_MASK;
*plane = (offset >> PAGE_SHIFT) & PLANE_INDEX_MASK;
- if (buffer >= q->num_buffers || *plane >= q->bufs[buffer]->num_planes)
+ *vb = vb2_get_buffer(q, buffer);
+ if (!*vb)
+ return -EINVAL;
+ if (*plane >= (*vb)->num_planes)
return -EINVAL;
- *vb = q->bufs[buffer];
return 0;
}
@@ -2615,6 +2670,7 @@ struct vb2_fileio_data {
static int __vb2_init_fileio(struct vb2_queue *q, int read)
{
struct vb2_fileio_data *fileio;
+ struct vb2_buffer *vb;
int i, ret;
unsigned int count = 0;
@@ -2665,11 +2721,18 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
if (ret)
goto err_kfree;
+ /*
+ * Userspace can never add or delete buffers later, so there
+ * will never be holes. It is safe to assume that vb2_get_buffer(q, 0)
+ * will always return a valid vb pointer
+ */
+ vb = vb2_get_buffer(q, 0);
+
/*
* Check if plane_count is correct
* (multiplane buffers are not supported).
*/
- if (q->bufs[0]->num_planes != 1) {
+ if (vb->num_planes != 1) {
ret = -EBUSY;
goto err_reqbufs;
}
@@ -2678,12 +2741,15 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
* Get kernel address of each buffer.
*/
for (i = 0; i < q->num_buffers; i++) {
- fileio->bufs[i].vaddr = vb2_plane_vaddr(q->bufs[i], 0);
+ /* vb can never be NULL when using fileio. */
+ vb = vb2_get_buffer(q, i);
+
+ fileio->bufs[i].vaddr = vb2_plane_vaddr(vb, 0);
if (fileio->bufs[i].vaddr == NULL) {
ret = -EINVAL;
goto err_reqbufs;
}
- fileio->bufs[i].size = vb2_plane_size(q->bufs[i], 0);
+ fileio->bufs[i].size = vb2_plane_size(vb, 0);
}
/*
@@ -2811,15 +2877,17 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
fileio->cur_index = index;
buf = &fileio->bufs[index];
- b = q->bufs[index];
+
+ /* b can never be NULL when using fileio. */
+ b = vb2_get_buffer(q, index);
/*
* Get number of bytes filled by the driver
*/
buf->pos = 0;
buf->queued = 0;
- buf->size = read ? vb2_get_plane_payload(q->bufs[index], 0)
- : vb2_plane_size(q->bufs[index], 0);
+ buf->size = read ? vb2_get_plane_payload(b, 0)
+ : vb2_plane_size(b, 0);
/* Compensate for data_offset on read in the multiplanar case. */
if (is_multiplanar && read &&
b->planes[0].data_offset < buf->size) {
@@ -2862,7 +2930,8 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
* Queue next buffer if required.
*/
if (buf->pos == buf->size || (!read && fileio->write_immediately)) {
- struct vb2_buffer *b = q->bufs[index];
+ /* b can never be NULL when using fileio. */
+ struct vb2_buffer *b = vb2_get_buffer(q, index);
/*
* Check if this is the last buffer to read.
@@ -2889,7 +2958,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
*/
buf->pos = 0;
buf->queued = 1;
- buf->size = vb2_plane_size(q->bufs[index], 0);
+ buf->size = vb2_plane_size(b, 0);
fileio->q_count += 1;
/*
* If we are queuing up buffers for the first time, then
@@ -2960,7 +3029,9 @@ static int vb2_thread(void *data)
* Call vb2_dqbuf to get buffer back.
*/
if (prequeue) {
- vb = q->bufs[index++];
+ vb = vb2_get_buffer(q, index++);
+ if (!vb)
+ continue;
prequeue--;
} else {
call_void_qop(q, wait_finish, q);
@@ -2969,7 +3040,7 @@ static int vb2_thread(void *data)
call_void_qop(q, wait_prepare, q);
dprintk(q, 5, "file io: vb2_dqbuf result: %d\n", ret);
if (!ret)
- vb = q->bufs[index];
+ vb = vb2_get_buffer(q, index);
}
if (ret || threadio->stop)
break;
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index d19d82a75ac6..2ffb097bf00a 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -377,6 +377,12 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
return -EINVAL;
}
+ vb = vb2_get_buffer(q, b->index);
+ if (!vb) {
+ dprintk(q, 1, "%s: buffer %u is NULL\n", opname, b->index);
+ return -EINVAL;
+ }
+
if (b->memory != q->memory) {
dprintk(q, 1, "%s: invalid memory type\n", opname);
return -EINVAL;
@@ -615,11 +621,22 @@ static const struct vb2_buf_ops v4l2_buf_ops = {
struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp)
{
unsigned int i;
+ struct vb2_buffer *vb2;
- for (i = 0; i < q->num_buffers; i++)
- if (q->bufs[i]->copied_timestamp &&
- q->bufs[i]->timestamp == timestamp)
- return vb2_get_buffer(q, i);
+ /*
+ * This loop doesn't scale if there is a really large number of buffers.
+ * Maybe something more efficient will be needed in this case.
+ */
+ for (i = 0; i < q->num_buffers; i++) {
+ vb2 = vb2_get_buffer(q, i);
+
+ if (!vb2)
+ continue;
+
+ if (vb2->copied_timestamp &&
+ vb2->timestamp == timestamp)
+ return vb2;
+ }
return NULL;
}
EXPORT_SYMBOL_GPL(vb2_find_buffer);
@@ -647,11 +664,12 @@ int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b)
return -EINVAL;
}
- if (b->index >= q->num_buffers) {
- dprintk(q, 1, "buffer index out of range\n");
+ vb = vb2_get_buffer(q, b->index);
+ if (!vb) {
+ dprintk(q, 1, "can't find the requested buffer %u\n", b->index);
return -EINVAL;
}
- vb = q->bufs[b->index];
+
ret = __verify_planes_array(vb, b);
if (!ret)
vb2_core_querybuf(q, vb, b);
@@ -721,11 +739,11 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
if (b->flags & V4L2_BUF_FLAG_REQUEST_FD)
return -EINVAL;
- if (b->index >= q->num_buffers) {
- dprintk(q, 1, "buffer index out of range\n");
+ vb = vb2_get_buffer(q, b->index);
+ if (!vb) {
+ dprintk(q, 1, "can't find the requested buffer %u\n", b->index);
return -EINVAL;
}
- vb = q->bufs[b->index];
ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, true, NULL);
@@ -809,7 +827,11 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
dprintk(q, 1, "buffer index out of range\n");
return -EINVAL;
}
- vb = q->bufs[b->index];
+ vb = vb2_get_buffer(q, b->index);
+ if (!vb) {
+ dprintk(q, 1, "can't find the requested buffer %u\n", b->index);
+ return -EINVAL;
+ }
ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, false, &req);
if (ret)
@@ -880,7 +902,11 @@ int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
dprintk(q, 1, "buffer index out of range\n");
return -EINVAL;
}
- vb = q->bufs[eb->index];
+ vb = vb2_get_buffer(q, eb->index);
+ if (!vb) {
+ dprintk(q, 1, "can't find the requested buffer %u\n", eb->index);
+ return -EINVAL;
+ }
return vb2_core_expbuf(q, &eb->fd, eb->type, vb,
eb->plane, eb->flags);
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 05/56] media: videobuf2: Access vb2_queue bufs array through helper functions
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
This patch adds 2 helpers functions to add and remove vb2 buffers
from a queue. With these 2 and vb2_get_buffer(), bufs field of
struct vb2_queue becomes like a private member of the structure.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer in preparation for when buffers can be deleted.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 151 +++++++++++++-----
.../media/common/videobuf2/videobuf2-v4l2.c | 50 ++++--
2 files changed, 149 insertions(+), 52 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 968b7c0e7934..b406a30a9b35 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -408,6 +408,31 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
vb->skip_cache_sync_on_finish = 1;
}
+/**
+ * vb2_queue_add_buffer() - add a buffer to a queue
+ * @q: pointer to &struct vb2_queue with videobuf2 queue.
+ * @vb: pointer to &struct vb2_buffer to be added to the queue.
+ * @index: index where add vb2_buffer in the queue
+ */
+static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
+{
+ WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
+
+ q->bufs[index] = vb;
+ vb->index = index;
+ vb->vb2_queue = q;
+}
+
+/**
+ * vb2_queue_remove_buffer() - remove a buffer from a queue
+ * @vb: pointer to &struct vb2_buffer to be removed from the queue.
+ */
+static void vb2_queue_remove_buffer(struct vb2_buffer *vb)
+{
+ vb->vb2_queue->bufs[vb->index] = NULL;
+ vb->vb2_queue = NULL;
+}
+
/*
* __vb2_queue_alloc() - allocate vb2 buffer structures and (for MMAP type)
* video buffer memory for all buffers/planes on the queue and initializes the
@@ -436,9 +461,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
}
vb->state = VB2_BUF_STATE_DEQUEUED;
- vb->vb2_queue = q;
vb->num_planes = num_planes;
- vb->index = q->num_buffers + buffer;
vb->type = q->type;
vb->memory = memory;
init_buffer_cache_hints(q, vb);
@@ -446,9 +469,9 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
vb->planes[plane].length = plane_sizes[plane];
vb->planes[plane].min_length = plane_sizes[plane];
}
- call_void_bufop(q, init_buffer, vb);
- q->bufs[vb->index] = vb;
+ vb2_queue_add_buffer(q, vb, q->num_buffers + buffer);
+ call_void_bufop(q, init_buffer, vb);
/* Allocate video buffer memory for the MMAP type */
if (memory == VB2_MEMORY_MMAP) {
@@ -456,7 +479,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
if (ret) {
dprintk(q, 1, "failed allocating memory for buffer %d\n",
buffer);
- q->bufs[vb->index] = NULL;
+ vb2_queue_remove_buffer(vb);
kfree(vb);
break;
}
@@ -471,7 +494,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
dprintk(q, 1, "buffer %d %p initialization failed\n",
buffer, vb);
__vb2_buf_mem_free(vb);
- q->bufs[vb->index] = NULL;
+ vb2_queue_remove_buffer(vb);
kfree(vb);
break;
}
@@ -494,7 +517,7 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
++buffer) {
- vb = q->bufs[buffer];
+ vb = vb2_get_buffer(q, buffer);
if (!vb)
continue;
@@ -522,7 +545,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
/* Call driver-provided cleanup function for each buffer, if provided */
for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
++buffer) {
- struct vb2_buffer *vb = q->bufs[buffer];
+ struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
if (vb && vb->planes[0].mem_priv)
call_void_vb_qop(vb, buf_cleanup, vb);
@@ -563,15 +586,20 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
q->cnt_unprepare_streaming = 0;
}
for (buffer = 0; buffer < q->num_buffers; ++buffer) {
- struct vb2_buffer *vb = q->bufs[buffer];
- bool unbalanced = vb->cnt_mem_alloc != vb->cnt_mem_put ||
- vb->cnt_mem_prepare != vb->cnt_mem_finish ||
- vb->cnt_mem_get_userptr != vb->cnt_mem_put_userptr ||
- vb->cnt_mem_attach_dmabuf != vb->cnt_mem_detach_dmabuf ||
- vb->cnt_mem_map_dmabuf != vb->cnt_mem_unmap_dmabuf ||
- vb->cnt_buf_queue != vb->cnt_buf_done ||
- vb->cnt_buf_prepare != vb->cnt_buf_finish ||
- vb->cnt_buf_init != vb->cnt_buf_cleanup;
+ struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+ bool unbalanced;
+
+ if (!vb)
+ continue;
+
+ unbalanced = vb->cnt_mem_alloc != vb->cnt_mem_put ||
+ vb->cnt_mem_prepare != vb->cnt_mem_finish ||
+ vb->cnt_mem_get_userptr != vb->cnt_mem_put_userptr ||
+ vb->cnt_mem_attach_dmabuf != vb->cnt_mem_detach_dmabuf ||
+ vb->cnt_mem_map_dmabuf != vb->cnt_mem_unmap_dmabuf ||
+ vb->cnt_buf_queue != vb->cnt_buf_done ||
+ vb->cnt_buf_prepare != vb->cnt_buf_finish ||
+ vb->cnt_buf_init != vb->cnt_buf_cleanup;
if (unbalanced) {
pr_info("unbalanced counters for queue %p, buffer %d:\n",
@@ -611,8 +639,13 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
/* Free vb2 buffers */
for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
++buffer) {
- kfree(q->bufs[buffer]);
- q->bufs[buffer] = NULL;
+ struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+
+ if (!vb)
+ continue;
+
+ vb2_queue_remove_buffer(vb);
+ kfree(vb);
}
q->num_buffers -= buffers;
@@ -648,7 +681,12 @@ static bool __buffers_in_use(struct vb2_queue *q)
{
unsigned int buffer;
for (buffer = 0; buffer < q->num_buffers; ++buffer) {
- if (vb2_buffer_in_use(q, q->bufs[buffer]))
+ struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+
+ if (!vb)
+ continue;
+
+ if (vb2_buffer_in_use(q, vb))
return true;
}
return false;
@@ -1633,7 +1671,11 @@ static int vb2_start_streaming(struct vb2_queue *q)
* correctly return them to vb2.
*/
for (i = 0; i < q->num_buffers; ++i) {
- vb = q->bufs[i];
+ vb = vb2_get_buffer(q, i);
+
+ if (!vb)
+ continue;
+
if (vb->state == VB2_BUF_STATE_ACTIVE)
vb2_buffer_done(vb, VB2_BUF_STATE_QUEUED);
}
@@ -2034,12 +2076,18 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* to vb2 in stop_streaming().
*/
if (WARN_ON(atomic_read(&q->owned_by_drv_count))) {
- for (i = 0; i < q->num_buffers; ++i)
- if (q->bufs[i]->state == VB2_BUF_STATE_ACTIVE) {
- pr_warn("driver bug: stop_streaming operation is leaving buf %p in active state\n",
- q->bufs[i]);
- vb2_buffer_done(q->bufs[i], VB2_BUF_STATE_ERROR);
+ for (i = 0; i < q->num_buffers; ++i) {
+ struct vb2_buffer *vb = vb2_get_buffer(q, i);
+
+ if (!vb)
+ continue;
+
+ if (vb->state == VB2_BUF_STATE_ACTIVE) {
+ pr_warn("driver bug: stop_streaming operation is leaving buffer %u in active state\n",
+ vb->index);
+ vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
}
+ }
/* Must be zero now */
WARN_ON(atomic_read(&q->owned_by_drv_count));
}
@@ -2073,9 +2121,14 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* be changed, so we can't move the buf_finish() to __vb2_dqbuf().
*/
for (i = 0; i < q->num_buffers; ++i) {
- struct vb2_buffer *vb = q->bufs[i];
- struct media_request *req = vb->req_obj.req;
+ struct vb2_buffer *vb;
+ struct media_request *req;
+ vb = vb2_get_buffer(q, i);
+ if (!vb)
+ continue;
+
+ req = vb->req_obj.req;
/*
* If a request is associated with this buffer, then
* call buf_request_cancel() to give the driver to complete()
@@ -2224,10 +2277,12 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
buffer = (offset >> PLANE_INDEX_SHIFT) & BUFFER_INDEX_MASK;
*plane = (offset >> PAGE_SHIFT) & PLANE_INDEX_MASK;
- if (buffer >= q->num_buffers || *plane >= q->bufs[buffer]->num_planes)
+ *vb = vb2_get_buffer(q, buffer);
+ if (!*vb)
+ return -EINVAL;
+ if (*plane >= (*vb)->num_planes)
return -EINVAL;
- *vb = q->bufs[buffer];
return 0;
}
@@ -2615,6 +2670,7 @@ struct vb2_fileio_data {
static int __vb2_init_fileio(struct vb2_queue *q, int read)
{
struct vb2_fileio_data *fileio;
+ struct vb2_buffer *vb;
int i, ret;
unsigned int count = 0;
@@ -2665,11 +2721,18 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
if (ret)
goto err_kfree;
+ /*
+ * Userspace can never add or delete buffers later, so there
+ * will never be holes. It is safe to assume that vb2_get_buffer(q, 0)
+ * will always return a valid vb pointer
+ */
+ vb = vb2_get_buffer(q, 0);
+
/*
* Check if plane_count is correct
* (multiplane buffers are not supported).
*/
- if (q->bufs[0]->num_planes != 1) {
+ if (vb->num_planes != 1) {
ret = -EBUSY;
goto err_reqbufs;
}
@@ -2678,12 +2741,15 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
* Get kernel address of each buffer.
*/
for (i = 0; i < q->num_buffers; i++) {
- fileio->bufs[i].vaddr = vb2_plane_vaddr(q->bufs[i], 0);
+ /* vb can never be NULL when using fileio. */
+ vb = vb2_get_buffer(q, i);
+
+ fileio->bufs[i].vaddr = vb2_plane_vaddr(vb, 0);
if (fileio->bufs[i].vaddr == NULL) {
ret = -EINVAL;
goto err_reqbufs;
}
- fileio->bufs[i].size = vb2_plane_size(q->bufs[i], 0);
+ fileio->bufs[i].size = vb2_plane_size(vb, 0);
}
/*
@@ -2811,15 +2877,17 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
fileio->cur_index = index;
buf = &fileio->bufs[index];
- b = q->bufs[index];
+
+ /* b can never be NULL when using fileio. */
+ b = vb2_get_buffer(q, index);
/*
* Get number of bytes filled by the driver
*/
buf->pos = 0;
buf->queued = 0;
- buf->size = read ? vb2_get_plane_payload(q->bufs[index], 0)
- : vb2_plane_size(q->bufs[index], 0);
+ buf->size = read ? vb2_get_plane_payload(b, 0)
+ : vb2_plane_size(b, 0);
/* Compensate for data_offset on read in the multiplanar case. */
if (is_multiplanar && read &&
b->planes[0].data_offset < buf->size) {
@@ -2862,7 +2930,8 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
* Queue next buffer if required.
*/
if (buf->pos == buf->size || (!read && fileio->write_immediately)) {
- struct vb2_buffer *b = q->bufs[index];
+ /* b can never be NULL when using fileio. */
+ struct vb2_buffer *b = vb2_get_buffer(q, index);
/*
* Check if this is the last buffer to read.
@@ -2889,7 +2958,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
*/
buf->pos = 0;
buf->queued = 1;
- buf->size = vb2_plane_size(q->bufs[index], 0);
+ buf->size = vb2_plane_size(b, 0);
fileio->q_count += 1;
/*
* If we are queuing up buffers for the first time, then
@@ -2960,7 +3029,9 @@ static int vb2_thread(void *data)
* Call vb2_dqbuf to get buffer back.
*/
if (prequeue) {
- vb = q->bufs[index++];
+ vb = vb2_get_buffer(q, index++);
+ if (!vb)
+ continue;
prequeue--;
} else {
call_void_qop(q, wait_finish, q);
@@ -2969,7 +3040,7 @@ static int vb2_thread(void *data)
call_void_qop(q, wait_prepare, q);
dprintk(q, 5, "file io: vb2_dqbuf result: %d\n", ret);
if (!ret)
- vb = q->bufs[index];
+ vb = vb2_get_buffer(q, index);
}
if (ret || threadio->stop)
break;
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index d19d82a75ac6..2ffb097bf00a 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -377,6 +377,12 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
return -EINVAL;
}
+ vb = vb2_get_buffer(q, b->index);
+ if (!vb) {
+ dprintk(q, 1, "%s: buffer %u is NULL\n", opname, b->index);
+ return -EINVAL;
+ }
+
if (b->memory != q->memory) {
dprintk(q, 1, "%s: invalid memory type\n", opname);
return -EINVAL;
@@ -615,11 +621,22 @@ static const struct vb2_buf_ops v4l2_buf_ops = {
struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp)
{
unsigned int i;
+ struct vb2_buffer *vb2;
- for (i = 0; i < q->num_buffers; i++)
- if (q->bufs[i]->copied_timestamp &&
- q->bufs[i]->timestamp == timestamp)
- return vb2_get_buffer(q, i);
+ /*
+ * This loop doesn't scale if there is a really large number of buffers.
+ * Maybe something more efficient will be needed in this case.
+ */
+ for (i = 0; i < q->num_buffers; i++) {
+ vb2 = vb2_get_buffer(q, i);
+
+ if (!vb2)
+ continue;
+
+ if (vb2->copied_timestamp &&
+ vb2->timestamp == timestamp)
+ return vb2;
+ }
return NULL;
}
EXPORT_SYMBOL_GPL(vb2_find_buffer);
@@ -647,11 +664,12 @@ int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b)
return -EINVAL;
}
- if (b->index >= q->num_buffers) {
- dprintk(q, 1, "buffer index out of range\n");
+ vb = vb2_get_buffer(q, b->index);
+ if (!vb) {
+ dprintk(q, 1, "can't find the requested buffer %u\n", b->index);
return -EINVAL;
}
- vb = q->bufs[b->index];
+
ret = __verify_planes_array(vb, b);
if (!ret)
vb2_core_querybuf(q, vb, b);
@@ -721,11 +739,11 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
if (b->flags & V4L2_BUF_FLAG_REQUEST_FD)
return -EINVAL;
- if (b->index >= q->num_buffers) {
- dprintk(q, 1, "buffer index out of range\n");
+ vb = vb2_get_buffer(q, b->index);
+ if (!vb) {
+ dprintk(q, 1, "can't find the requested buffer %u\n", b->index);
return -EINVAL;
}
- vb = q->bufs[b->index];
ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, true, NULL);
@@ -809,7 +827,11 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
dprintk(q, 1, "buffer index out of range\n");
return -EINVAL;
}
- vb = q->bufs[b->index];
+ vb = vb2_get_buffer(q, b->index);
+ if (!vb) {
+ dprintk(q, 1, "can't find the requested buffer %u\n", b->index);
+ return -EINVAL;
+ }
ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, false, &req);
if (ret)
@@ -880,7 +902,11 @@ int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
dprintk(q, 1, "buffer index out of range\n");
return -EINVAL;
}
- vb = q->bufs[eb->index];
+ vb = vb2_get_buffer(q, eb->index);
+ if (!vb) {
+ dprintk(q, 1, "can't find the requested buffer %u\n", eb->index);
+ return -EINVAL;
+ }
return vb2_core_expbuf(q, &eb->fd, eb->type, vb,
eb->plane, eb->flags);
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 06/56] media: videobuf2: Remove duplicated index vs q->num_buffers check
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
vb2_get_buffer() already checks if the requested index is valid.
Stop duplicating this kind of check everywhere.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/common/videobuf2/videobuf2-v4l2.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index 2ffb097bf00a..c6ebc8d2c537 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -823,10 +823,6 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
return -EBUSY;
}
- if (b->index >= q->num_buffers) {
- dprintk(q, 1, "buffer index out of range\n");
- return -EINVAL;
- }
vb = vb2_get_buffer(q, b->index);
if (!vb) {
dprintk(q, 1, "can't find the requested buffer %u\n", b->index);
@@ -898,10 +894,6 @@ int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
{
struct vb2_buffer *vb;
- if (eb->index >= q->num_buffers) {
- dprintk(q, 1, "buffer index out of range\n");
- return -EINVAL;
- }
vb = vb2_get_buffer(q, eb->index);
if (!vb) {
dprintk(q, 1, "can't find the requested buffer %u\n", eb->index);
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 06/56] media: videobuf2: Remove duplicated index vs q->num_buffers check
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
vb2_get_buffer() already checks if the requested index is valid.
Stop duplicating this kind of check everywhere.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/common/videobuf2/videobuf2-v4l2.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index 2ffb097bf00a..c6ebc8d2c537 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -823,10 +823,6 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
return -EBUSY;
}
- if (b->index >= q->num_buffers) {
- dprintk(q, 1, "buffer index out of range\n");
- return -EINVAL;
- }
vb = vb2_get_buffer(q, b->index);
if (!vb) {
dprintk(q, 1, "can't find the requested buffer %u\n", b->index);
@@ -898,10 +894,6 @@ int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
{
struct vb2_buffer *vb;
- if (eb->index >= q->num_buffers) {
- dprintk(q, 1, "buffer index out of range\n");
- return -EINVAL;
- }
vb = vb2_get_buffer(q, eb->index);
if (!vb) {
dprintk(q, 1, "can't find the requested buffer %u\n", eb->index);
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 06/56] media: videobuf2: Remove duplicated index vs q->num_buffers check
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
vb2_get_buffer() already checks if the requested index is valid.
Stop duplicating this kind of check everywhere.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/common/videobuf2/videobuf2-v4l2.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index 2ffb097bf00a..c6ebc8d2c537 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -823,10 +823,6 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
return -EBUSY;
}
- if (b->index >= q->num_buffers) {
- dprintk(q, 1, "buffer index out of range\n");
- return -EINVAL;
- }
vb = vb2_get_buffer(q, b->index);
if (!vb) {
dprintk(q, 1, "can't find the requested buffer %u\n", b->index);
@@ -898,10 +894,6 @@ int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
{
struct vb2_buffer *vb;
- if (eb->index >= q->num_buffers) {
- dprintk(q, 1, "buffer index out of range\n");
- return -EINVAL;
- }
vb = vb2_get_buffer(q, eb->index);
if (!vb) {
dprintk(q, 1, "can't find the requested buffer %u\n", eb->index);
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 07/56] media: videobuf2: Add helper to get queue number of buffers
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
In the future a side effect of introducing DELETE_BUFS ioctl is
the create of 'holes' (i.e. unused buffers) in bufs arrays.
To know which entries of the bufs arrays are used a bitmap will
be added in struct vb2_queue. That will also mean that the number
of buffers will be computed given the number of bit set in this bitmap.
To smoothly allow this evolution all drives must stop using
directly num_buffers field from struct vb2_queue.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
include/media/videobuf2-core.h | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index cd3ff1cd759d..8f9d9e4af5b1 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -1139,6 +1139,15 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
return q->fileio;
}
+/**
+ * vb2_get_num_buffers() - get the number of buffer in a queue
+ * @q: pointer to &struct vb2_queue with videobuf2 queue.
+ */
+static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
+{
+ return q->num_buffers;
+}
+
/**
* vb2_is_busy() - return busy status of the queue.
* @q: pointer to &struct vb2_queue with videobuf2 queue.
@@ -1147,7 +1156,7 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
*/
static inline bool vb2_is_busy(struct vb2_queue *q)
{
- return (q->num_buffers > 0);
+ return vb2_get_num_buffers(q) > 0;
}
/**
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 07/56] media: videobuf2: Add helper to get queue number of buffers
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
In the future a side effect of introducing DELETE_BUFS ioctl is
the create of 'holes' (i.e. unused buffers) in bufs arrays.
To know which entries of the bufs arrays are used a bitmap will
be added in struct vb2_queue. That will also mean that the number
of buffers will be computed given the number of bit set in this bitmap.
To smoothly allow this evolution all drives must stop using
directly num_buffers field from struct vb2_queue.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
include/media/videobuf2-core.h | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index cd3ff1cd759d..8f9d9e4af5b1 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -1139,6 +1139,15 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
return q->fileio;
}
+/**
+ * vb2_get_num_buffers() - get the number of buffer in a queue
+ * @q: pointer to &struct vb2_queue with videobuf2 queue.
+ */
+static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
+{
+ return q->num_buffers;
+}
+
/**
* vb2_is_busy() - return busy status of the queue.
* @q: pointer to &struct vb2_queue with videobuf2 queue.
@@ -1147,7 +1156,7 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
*/
static inline bool vb2_is_busy(struct vb2_queue *q)
{
- return (q->num_buffers > 0);
+ return vb2_get_num_buffers(q) > 0;
}
/**
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 07/56] media: videobuf2: Add helper to get queue number of buffers
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
In the future a side effect of introducing DELETE_BUFS ioctl is
the create of 'holes' (i.e. unused buffers) in bufs arrays.
To know which entries of the bufs arrays are used a bitmap will
be added in struct vb2_queue. That will also mean that the number
of buffers will be computed given the number of bit set in this bitmap.
To smoothly allow this evolution all drives must stop using
directly num_buffers field from struct vb2_queue.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
include/media/videobuf2-core.h | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index cd3ff1cd759d..8f9d9e4af5b1 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -1139,6 +1139,15 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
return q->fileio;
}
+/**
+ * vb2_get_num_buffers() - get the number of buffer in a queue
+ * @q: pointer to &struct vb2_queue with videobuf2 queue.
+ */
+static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
+{
+ return q->num_buffers;
+}
+
/**
* vb2_is_busy() - return busy status of the queue.
* @q: pointer to &struct vb2_queue with videobuf2 queue.
@@ -1147,7 +1156,7 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
*/
static inline bool vb2_is_busy(struct vb2_queue *q)
{
- return (q->num_buffers > 0);
+ return vb2_get_num_buffers(q) > 0;
}
/**
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 08/56] media: videobuf2: Use vb2_get_num_buffers() helper
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Stop using queue num_buffers field directly, instead use
vb2_get_num_buffers().
This prepares for the future 'delete buffers' feature where there are
holes in the buffer indices.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 92 +++++++++++--------
.../media/common/videobuf2/videobuf2-v4l2.c | 4 +-
2 files changed, 54 insertions(+), 42 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index b406a30a9b35..c5c5ae4d213d 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -444,13 +444,14 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
unsigned int num_buffers, unsigned int num_planes,
const unsigned plane_sizes[VB2_MAX_PLANES])
{
+ unsigned int q_num_buffers = vb2_get_num_buffers(q);
unsigned int buffer, plane;
struct vb2_buffer *vb;
int ret;
/* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
num_buffers = min_t(unsigned int, num_buffers,
- VB2_MAX_FRAME - q->num_buffers);
+ VB2_MAX_FRAME - q_num_buffers);
for (buffer = 0; buffer < num_buffers; ++buffer) {
/* Allocate vb2 buffer structures */
@@ -470,7 +471,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
vb->planes[plane].min_length = plane_sizes[plane];
}
- vb2_queue_add_buffer(q, vb, q->num_buffers + buffer);
+ vb2_queue_add_buffer(q, vb, q_num_buffers + buffer);
call_void_bufop(q, init_buffer, vb);
/* Allocate video buffer memory for the MMAP type */
@@ -514,8 +515,9 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
{
unsigned int buffer;
struct vb2_buffer *vb;
+ unsigned int q_num_buffers = vb2_get_num_buffers(q);
- for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
+ for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
++buffer) {
vb = vb2_get_buffer(q, buffer);
if (!vb)
@@ -539,11 +541,12 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
{
unsigned int buffer;
+ unsigned int q_num_buffers = vb2_get_num_buffers(q);
lockdep_assert_held(&q->mmap_lock);
/* Call driver-provided cleanup function for each buffer, if provided */
- for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
+ for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
++buffer) {
struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
@@ -559,7 +562,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
* Check that all the calls were balanced during the life-time of this
* queue. If not then dump the counters to the kernel log.
*/
- if (q->num_buffers) {
+ if (q_num_buffers) {
bool unbalanced = q->cnt_start_streaming != q->cnt_stop_streaming ||
q->cnt_prepare_streaming != q->cnt_unprepare_streaming ||
q->cnt_wait_prepare != q->cnt_wait_finish;
@@ -585,7 +588,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
q->cnt_stop_streaming = 0;
q->cnt_unprepare_streaming = 0;
}
- for (buffer = 0; buffer < q->num_buffers; ++buffer) {
+ for (buffer = 0; buffer < vb2_get_num_buffers(q); buffer++) {
struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
bool unbalanced;
@@ -637,7 +640,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
#endif
/* Free vb2 buffers */
- for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
+ for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
++buffer) {
struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
@@ -649,7 +652,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
}
q->num_buffers -= buffers;
- if (!q->num_buffers) {
+ if (!vb2_get_num_buffers(q)) {
q->memory = VB2_MEMORY_UNKNOWN;
INIT_LIST_HEAD(&q->queued_list);
}
@@ -680,7 +683,7 @@ EXPORT_SYMBOL(vb2_buffer_in_use);
static bool __buffers_in_use(struct vb2_queue *q)
{
unsigned int buffer;
- for (buffer = 0; buffer < q->num_buffers; ++buffer) {
+ for (buffer = 0; buffer < vb2_get_num_buffers(q); ++buffer) {
struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
if (!vb)
@@ -806,6 +809,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned int flags, unsigned int *count)
{
unsigned int num_buffers, allocated_buffers, num_planes = 0;
+ unsigned int q_num_bufs = vb2_get_num_buffers(q);
unsigned plane_sizes[VB2_MAX_PLANES] = { };
bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
unsigned int i;
@@ -821,7 +825,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
return -EBUSY;
}
- if (*count == 0 || q->num_buffers != 0 ||
+ if (*count == 0 || q_num_bufs != 0 ||
(q->memory != VB2_MEMORY_UNKNOWN && q->memory != memory) ||
!verify_coherency_flags(q, non_coherent_mem)) {
/*
@@ -839,7 +843,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
* queued without ever calling STREAMON.
*/
__vb2_queue_cancel(q);
- __vb2_queue_free(q, q->num_buffers);
+ __vb2_queue_free(q, q_num_bufs);
mutex_unlock(&q->mmap_lock);
/*
@@ -934,7 +938,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
if (ret < 0) {
/*
* Note: __vb2_queue_free() will subtract 'allocated_buffers'
- * from q->num_buffers and it will reset q->memory to
+ * from already queued buffers and it will reset q->memory to
* VB2_MEMORY_UNKNOWN.
*/
__vb2_queue_free(q, allocated_buffers);
@@ -968,10 +972,11 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned int num_planes = 0, num_buffers, allocated_buffers;
unsigned plane_sizes[VB2_MAX_PLANES] = { };
bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
- bool no_previous_buffers = !q->num_buffers;
- int ret;
+ unsigned int q_num_bufs = vb2_get_num_buffers(q);
+ bool no_previous_buffers = !q_num_bufs;
+ int ret = 0;
- if (q->num_buffers == VB2_MAX_FRAME) {
+ if (q_num_bufs == VB2_MAX_FRAME) {
dprintk(q, 1, "maximum number of buffers already allocated\n");
return -ENOBUFS;
}
@@ -1000,7 +1005,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
return -EINVAL;
}
- num_buffers = min(*count, VB2_MAX_FRAME - q->num_buffers);
+ num_buffers = min(*count, VB2_MAX_FRAME - q_num_bufs);
if (requested_planes && requested_sizes) {
num_planes = requested_planes;
@@ -1032,7 +1037,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
num_buffers = allocated_buffers;
/*
- * q->num_buffers contains the total number of buffers, that the
+ * num_buffers contains the total number of buffers, that the
* queue driver has set up
*/
ret = call_qop(q, queue_setup, q, &num_buffers,
@@ -1053,7 +1058,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
if (ret < 0) {
/*
* Note: __vb2_queue_free() will subtract 'allocated_buffers'
- * from q->num_buffers and it will reset q->memory to
+ * from already queued buffers and it will reset q->memory to
* VB2_MEMORY_UNKNOWN.
*/
__vb2_queue_free(q, allocated_buffers);
@@ -1670,7 +1675,7 @@ static int vb2_start_streaming(struct vb2_queue *q)
* Forcefully reclaim buffers if the driver did not
* correctly return them to vb2.
*/
- for (i = 0; i < q->num_buffers; ++i) {
+ for (i = 0; i < vb2_get_num_buffers(q); ++i) {
vb = vb2_get_buffer(q, i);
if (!vb)
@@ -2076,7 +2081,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* to vb2 in stop_streaming().
*/
if (WARN_ON(atomic_read(&q->owned_by_drv_count))) {
- for (i = 0; i < q->num_buffers; ++i) {
+ for (i = 0; i < vb2_get_num_buffers(q); i++) {
struct vb2_buffer *vb = vb2_get_buffer(q, i);
if (!vb)
@@ -2120,7 +2125,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* call to __fill_user_buffer() after buf_finish(). That order can't
* be changed, so we can't move the buf_finish() to __vb2_dqbuf().
*/
- for (i = 0; i < q->num_buffers; ++i) {
+ for (i = 0; i < vb2_get_num_buffers(q); i++) {
struct vb2_buffer *vb;
struct media_request *req;
@@ -2168,6 +2173,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
int vb2_core_streamon(struct vb2_queue *q, unsigned int type)
{
+ unsigned int q_num_bufs = vb2_get_num_buffers(q);
int ret;
if (type != q->type) {
@@ -2180,12 +2186,12 @@ int vb2_core_streamon(struct vb2_queue *q, unsigned int type)
return 0;
}
- if (!q->num_buffers) {
+ if (!q_num_bufs) {
dprintk(q, 1, "no buffers have been allocated\n");
return -EINVAL;
}
- if (q->num_buffers < q->min_buffers_needed) {
+ if (q_num_bufs < q->min_buffers_needed) {
dprintk(q, 1, "need at least %u allocated buffers\n",
q->min_buffers_needed);
return -EINVAL;
@@ -2513,7 +2519,8 @@ void vb2_core_queue_release(struct vb2_queue *q)
__vb2_cleanup_fileio(q);
__vb2_queue_cancel(q);
mutex_lock(&q->mmap_lock);
- __vb2_queue_free(q, q->num_buffers);
+ __vb2_queue_free(q, vb2_get_num_buffers(q));
+ q->num_buffers = 0;
mutex_unlock(&q->mmap_lock);
}
EXPORT_SYMBOL_GPL(vb2_core_queue_release);
@@ -2542,7 +2549,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
/*
* Start file I/O emulator only if streaming API has not been used yet.
*/
- if (q->num_buffers == 0 && !vb2_fileio_is_active(q)) {
+ if (vb2_get_num_buffers(q) == 0 && !vb2_fileio_is_active(q)) {
if (!q->is_output && (q->io_modes & VB2_READ) &&
(req_events & (EPOLLIN | EPOLLRDNORM))) {
if (__vb2_init_fileio(q, 1))
@@ -2580,7 +2587,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
* For output streams you can call write() as long as there are fewer
* buffers queued than there are buffers available.
*/
- if (q->is_output && q->fileio && q->queued_count < q->num_buffers)
+ if (q->is_output && q->fileio && q->queued_count < vb2_get_num_buffers(q))
return EPOLLOUT | EPOLLWRNORM;
if (list_empty(&q->done_list)) {
@@ -2629,8 +2636,8 @@ struct vb2_fileio_buf {
* struct vb2_fileio_data - queue context used by file io emulator
*
* @cur_index: the index of the buffer currently being read from or
- * written to. If equal to q->num_buffers then a new buffer
- * must be dequeued.
+ * written to. If equal to number of already queued buffers
+ * then a new buffer must be dequeued.
* @initial_index: in the read() case all buffers are queued up immediately
* in __vb2_init_fileio() and __vb2_perform_fileio() just cycles
* buffers. However, in the write() case no buffers are initially
@@ -2640,7 +2647,7 @@ struct vb2_fileio_buf {
* buffers. This means that initially __vb2_perform_fileio()
* needs to know what buffer index to use when it is queuing up
* the buffers for the first time. That initial index is stored
- * in this field. Once it is equal to q->num_buffers all
+ * in this field. Once it is equal to num_buffers all
* available buffers have been queued and __vb2_perform_fileio()
* should start the normal dequeue/queue cycle.
*
@@ -2690,7 +2697,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
/*
* Check if streaming api has not been already activated.
*/
- if (q->streaming || q->num_buffers > 0)
+ if (q->streaming || vb2_get_num_buffers(q) > 0)
return -EBUSY;
/*
@@ -2740,7 +2747,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
/*
* Get kernel address of each buffer.
*/
- for (i = 0; i < q->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(q); i++) {
/* vb can never be NULL when using fileio. */
vb = vb2_get_buffer(q, i);
@@ -2759,18 +2766,23 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
/*
* Queue all buffers.
*/
- for (i = 0; i < q->num_buffers; i++) {
- ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
+ for (i = 0; i < vb2_get_num_buffers(q); i++) {
+ struct vb2_buffer *vb2 = vb2_get_buffer(q, i);
+
+ if (!vb2)
+ continue;
+
+ ret = vb2_core_qbuf(q, vb2, NULL, NULL);
if (ret)
goto err_reqbufs;
fileio->bufs[i].queued = 1;
}
/*
* All buffers have been queued, so mark that by setting
- * initial_index to q->num_buffers
+ * initial_index to num_buffers
*/
- fileio->initial_index = q->num_buffers;
- fileio->cur_index = q->num_buffers;
+ fileio->initial_index = vb2_get_num_buffers(q);
+ fileio->cur_index = fileio->initial_index;
}
/*
@@ -2964,12 +2976,12 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
* If we are queuing up buffers for the first time, then
* increase initial_index by one.
*/
- if (fileio->initial_index < q->num_buffers)
+ if (fileio->initial_index < vb2_get_num_buffers(q))
fileio->initial_index++;
/*
* The next buffer to use is either a buffer that's going to be
- * queued for the first time (initial_index < q->num_buffers)
- * or it is equal to q->num_buffers, meaning that the next
+ * queued for the first time (initial_index < num_buffers)
+ * or it is equal to num_buffers, meaning that the next
* time we need to dequeue a buffer since we've now queued up
* all the 'first time' buffers.
*/
@@ -3016,7 +3028,7 @@ static int vb2_thread(void *data)
int ret = 0;
if (q->is_output) {
- prequeue = q->num_buffers;
+ prequeue = vb2_get_num_buffers(q);
copy_timestamp = q->copy_timestamp;
}
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index c6ebc8d2c537..7d798fb15c0b 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -627,7 +627,7 @@ struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp)
* This loop doesn't scale if there is a really large number of buffers.
* Maybe something more efficient will be needed in this case.
*/
- for (i = 0; i < q->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(q); i++) {
vb2 = vb2_get_buffer(q, i);
if (!vb2)
@@ -761,7 +761,7 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
fill_buf_caps(q, &create->capabilities);
validate_memory_flags(q, create->memory, &create->flags);
- create->index = q->num_buffers;
+ create->index = vb2_get_num_buffers(q);
if (create->count == 0)
return ret != -EBUSY ? ret : 0;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 08/56] media: videobuf2: Use vb2_get_num_buffers() helper
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Stop using queue num_buffers field directly, instead use
vb2_get_num_buffers().
This prepares for the future 'delete buffers' feature where there are
holes in the buffer indices.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 92 +++++++++++--------
.../media/common/videobuf2/videobuf2-v4l2.c | 4 +-
2 files changed, 54 insertions(+), 42 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index b406a30a9b35..c5c5ae4d213d 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -444,13 +444,14 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
unsigned int num_buffers, unsigned int num_planes,
const unsigned plane_sizes[VB2_MAX_PLANES])
{
+ unsigned int q_num_buffers = vb2_get_num_buffers(q);
unsigned int buffer, plane;
struct vb2_buffer *vb;
int ret;
/* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
num_buffers = min_t(unsigned int, num_buffers,
- VB2_MAX_FRAME - q->num_buffers);
+ VB2_MAX_FRAME - q_num_buffers);
for (buffer = 0; buffer < num_buffers; ++buffer) {
/* Allocate vb2 buffer structures */
@@ -470,7 +471,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
vb->planes[plane].min_length = plane_sizes[plane];
}
- vb2_queue_add_buffer(q, vb, q->num_buffers + buffer);
+ vb2_queue_add_buffer(q, vb, q_num_buffers + buffer);
call_void_bufop(q, init_buffer, vb);
/* Allocate video buffer memory for the MMAP type */
@@ -514,8 +515,9 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
{
unsigned int buffer;
struct vb2_buffer *vb;
+ unsigned int q_num_buffers = vb2_get_num_buffers(q);
- for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
+ for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
++buffer) {
vb = vb2_get_buffer(q, buffer);
if (!vb)
@@ -539,11 +541,12 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
{
unsigned int buffer;
+ unsigned int q_num_buffers = vb2_get_num_buffers(q);
lockdep_assert_held(&q->mmap_lock);
/* Call driver-provided cleanup function for each buffer, if provided */
- for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
+ for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
++buffer) {
struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
@@ -559,7 +562,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
* Check that all the calls were balanced during the life-time of this
* queue. If not then dump the counters to the kernel log.
*/
- if (q->num_buffers) {
+ if (q_num_buffers) {
bool unbalanced = q->cnt_start_streaming != q->cnt_stop_streaming ||
q->cnt_prepare_streaming != q->cnt_unprepare_streaming ||
q->cnt_wait_prepare != q->cnt_wait_finish;
@@ -585,7 +588,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
q->cnt_stop_streaming = 0;
q->cnt_unprepare_streaming = 0;
}
- for (buffer = 0; buffer < q->num_buffers; ++buffer) {
+ for (buffer = 0; buffer < vb2_get_num_buffers(q); buffer++) {
struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
bool unbalanced;
@@ -637,7 +640,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
#endif
/* Free vb2 buffers */
- for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
+ for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
++buffer) {
struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
@@ -649,7 +652,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
}
q->num_buffers -= buffers;
- if (!q->num_buffers) {
+ if (!vb2_get_num_buffers(q)) {
q->memory = VB2_MEMORY_UNKNOWN;
INIT_LIST_HEAD(&q->queued_list);
}
@@ -680,7 +683,7 @@ EXPORT_SYMBOL(vb2_buffer_in_use);
static bool __buffers_in_use(struct vb2_queue *q)
{
unsigned int buffer;
- for (buffer = 0; buffer < q->num_buffers; ++buffer) {
+ for (buffer = 0; buffer < vb2_get_num_buffers(q); ++buffer) {
struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
if (!vb)
@@ -806,6 +809,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned int flags, unsigned int *count)
{
unsigned int num_buffers, allocated_buffers, num_planes = 0;
+ unsigned int q_num_bufs = vb2_get_num_buffers(q);
unsigned plane_sizes[VB2_MAX_PLANES] = { };
bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
unsigned int i;
@@ -821,7 +825,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
return -EBUSY;
}
- if (*count == 0 || q->num_buffers != 0 ||
+ if (*count == 0 || q_num_bufs != 0 ||
(q->memory != VB2_MEMORY_UNKNOWN && q->memory != memory) ||
!verify_coherency_flags(q, non_coherent_mem)) {
/*
@@ -839,7 +843,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
* queued without ever calling STREAMON.
*/
__vb2_queue_cancel(q);
- __vb2_queue_free(q, q->num_buffers);
+ __vb2_queue_free(q, q_num_bufs);
mutex_unlock(&q->mmap_lock);
/*
@@ -934,7 +938,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
if (ret < 0) {
/*
* Note: __vb2_queue_free() will subtract 'allocated_buffers'
- * from q->num_buffers and it will reset q->memory to
+ * from already queued buffers and it will reset q->memory to
* VB2_MEMORY_UNKNOWN.
*/
__vb2_queue_free(q, allocated_buffers);
@@ -968,10 +972,11 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned int num_planes = 0, num_buffers, allocated_buffers;
unsigned plane_sizes[VB2_MAX_PLANES] = { };
bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
- bool no_previous_buffers = !q->num_buffers;
- int ret;
+ unsigned int q_num_bufs = vb2_get_num_buffers(q);
+ bool no_previous_buffers = !q_num_bufs;
+ int ret = 0;
- if (q->num_buffers == VB2_MAX_FRAME) {
+ if (q_num_bufs == VB2_MAX_FRAME) {
dprintk(q, 1, "maximum number of buffers already allocated\n");
return -ENOBUFS;
}
@@ -1000,7 +1005,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
return -EINVAL;
}
- num_buffers = min(*count, VB2_MAX_FRAME - q->num_buffers);
+ num_buffers = min(*count, VB2_MAX_FRAME - q_num_bufs);
if (requested_planes && requested_sizes) {
num_planes = requested_planes;
@@ -1032,7 +1037,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
num_buffers = allocated_buffers;
/*
- * q->num_buffers contains the total number of buffers, that the
+ * num_buffers contains the total number of buffers, that the
* queue driver has set up
*/
ret = call_qop(q, queue_setup, q, &num_buffers,
@@ -1053,7 +1058,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
if (ret < 0) {
/*
* Note: __vb2_queue_free() will subtract 'allocated_buffers'
- * from q->num_buffers and it will reset q->memory to
+ * from already queued buffers and it will reset q->memory to
* VB2_MEMORY_UNKNOWN.
*/
__vb2_queue_free(q, allocated_buffers);
@@ -1670,7 +1675,7 @@ static int vb2_start_streaming(struct vb2_queue *q)
* Forcefully reclaim buffers if the driver did not
* correctly return them to vb2.
*/
- for (i = 0; i < q->num_buffers; ++i) {
+ for (i = 0; i < vb2_get_num_buffers(q); ++i) {
vb = vb2_get_buffer(q, i);
if (!vb)
@@ -2076,7 +2081,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* to vb2 in stop_streaming().
*/
if (WARN_ON(atomic_read(&q->owned_by_drv_count))) {
- for (i = 0; i < q->num_buffers; ++i) {
+ for (i = 0; i < vb2_get_num_buffers(q); i++) {
struct vb2_buffer *vb = vb2_get_buffer(q, i);
if (!vb)
@@ -2120,7 +2125,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* call to __fill_user_buffer() after buf_finish(). That order can't
* be changed, so we can't move the buf_finish() to __vb2_dqbuf().
*/
- for (i = 0; i < q->num_buffers; ++i) {
+ for (i = 0; i < vb2_get_num_buffers(q); i++) {
struct vb2_buffer *vb;
struct media_request *req;
@@ -2168,6 +2173,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
int vb2_core_streamon(struct vb2_queue *q, unsigned int type)
{
+ unsigned int q_num_bufs = vb2_get_num_buffers(q);
int ret;
if (type != q->type) {
@@ -2180,12 +2186,12 @@ int vb2_core_streamon(struct vb2_queue *q, unsigned int type)
return 0;
}
- if (!q->num_buffers) {
+ if (!q_num_bufs) {
dprintk(q, 1, "no buffers have been allocated\n");
return -EINVAL;
}
- if (q->num_buffers < q->min_buffers_needed) {
+ if (q_num_bufs < q->min_buffers_needed) {
dprintk(q, 1, "need at least %u allocated buffers\n",
q->min_buffers_needed);
return -EINVAL;
@@ -2513,7 +2519,8 @@ void vb2_core_queue_release(struct vb2_queue *q)
__vb2_cleanup_fileio(q);
__vb2_queue_cancel(q);
mutex_lock(&q->mmap_lock);
- __vb2_queue_free(q, q->num_buffers);
+ __vb2_queue_free(q, vb2_get_num_buffers(q));
+ q->num_buffers = 0;
mutex_unlock(&q->mmap_lock);
}
EXPORT_SYMBOL_GPL(vb2_core_queue_release);
@@ -2542,7 +2549,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
/*
* Start file I/O emulator only if streaming API has not been used yet.
*/
- if (q->num_buffers == 0 && !vb2_fileio_is_active(q)) {
+ if (vb2_get_num_buffers(q) == 0 && !vb2_fileio_is_active(q)) {
if (!q->is_output && (q->io_modes & VB2_READ) &&
(req_events & (EPOLLIN | EPOLLRDNORM))) {
if (__vb2_init_fileio(q, 1))
@@ -2580,7 +2587,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
* For output streams you can call write() as long as there are fewer
* buffers queued than there are buffers available.
*/
- if (q->is_output && q->fileio && q->queued_count < q->num_buffers)
+ if (q->is_output && q->fileio && q->queued_count < vb2_get_num_buffers(q))
return EPOLLOUT | EPOLLWRNORM;
if (list_empty(&q->done_list)) {
@@ -2629,8 +2636,8 @@ struct vb2_fileio_buf {
* struct vb2_fileio_data - queue context used by file io emulator
*
* @cur_index: the index of the buffer currently being read from or
- * written to. If equal to q->num_buffers then a new buffer
- * must be dequeued.
+ * written to. If equal to number of already queued buffers
+ * then a new buffer must be dequeued.
* @initial_index: in the read() case all buffers are queued up immediately
* in __vb2_init_fileio() and __vb2_perform_fileio() just cycles
* buffers. However, in the write() case no buffers are initially
@@ -2640,7 +2647,7 @@ struct vb2_fileio_buf {
* buffers. This means that initially __vb2_perform_fileio()
* needs to know what buffer index to use when it is queuing up
* the buffers for the first time. That initial index is stored
- * in this field. Once it is equal to q->num_buffers all
+ * in this field. Once it is equal to num_buffers all
* available buffers have been queued and __vb2_perform_fileio()
* should start the normal dequeue/queue cycle.
*
@@ -2690,7 +2697,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
/*
* Check if streaming api has not been already activated.
*/
- if (q->streaming || q->num_buffers > 0)
+ if (q->streaming || vb2_get_num_buffers(q) > 0)
return -EBUSY;
/*
@@ -2740,7 +2747,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
/*
* Get kernel address of each buffer.
*/
- for (i = 0; i < q->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(q); i++) {
/* vb can never be NULL when using fileio. */
vb = vb2_get_buffer(q, i);
@@ -2759,18 +2766,23 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
/*
* Queue all buffers.
*/
- for (i = 0; i < q->num_buffers; i++) {
- ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
+ for (i = 0; i < vb2_get_num_buffers(q); i++) {
+ struct vb2_buffer *vb2 = vb2_get_buffer(q, i);
+
+ if (!vb2)
+ continue;
+
+ ret = vb2_core_qbuf(q, vb2, NULL, NULL);
if (ret)
goto err_reqbufs;
fileio->bufs[i].queued = 1;
}
/*
* All buffers have been queued, so mark that by setting
- * initial_index to q->num_buffers
+ * initial_index to num_buffers
*/
- fileio->initial_index = q->num_buffers;
- fileio->cur_index = q->num_buffers;
+ fileio->initial_index = vb2_get_num_buffers(q);
+ fileio->cur_index = fileio->initial_index;
}
/*
@@ -2964,12 +2976,12 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
* If we are queuing up buffers for the first time, then
* increase initial_index by one.
*/
- if (fileio->initial_index < q->num_buffers)
+ if (fileio->initial_index < vb2_get_num_buffers(q))
fileio->initial_index++;
/*
* The next buffer to use is either a buffer that's going to be
- * queued for the first time (initial_index < q->num_buffers)
- * or it is equal to q->num_buffers, meaning that the next
+ * queued for the first time (initial_index < num_buffers)
+ * or it is equal to num_buffers, meaning that the next
* time we need to dequeue a buffer since we've now queued up
* all the 'first time' buffers.
*/
@@ -3016,7 +3028,7 @@ static int vb2_thread(void *data)
int ret = 0;
if (q->is_output) {
- prequeue = q->num_buffers;
+ prequeue = vb2_get_num_buffers(q);
copy_timestamp = q->copy_timestamp;
}
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index c6ebc8d2c537..7d798fb15c0b 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -627,7 +627,7 @@ struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp)
* This loop doesn't scale if there is a really large number of buffers.
* Maybe something more efficient will be needed in this case.
*/
- for (i = 0; i < q->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(q); i++) {
vb2 = vb2_get_buffer(q, i);
if (!vb2)
@@ -761,7 +761,7 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
fill_buf_caps(q, &create->capabilities);
validate_memory_flags(q, create->memory, &create->flags);
- create->index = q->num_buffers;
+ create->index = vb2_get_num_buffers(q);
if (create->count == 0)
return ret != -EBUSY ? ret : 0;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 08/56] media: videobuf2: Use vb2_get_num_buffers() helper
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Stop using queue num_buffers field directly, instead use
vb2_get_num_buffers().
This prepares for the future 'delete buffers' feature where there are
holes in the buffer indices.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 92 +++++++++++--------
.../media/common/videobuf2/videobuf2-v4l2.c | 4 +-
2 files changed, 54 insertions(+), 42 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index b406a30a9b35..c5c5ae4d213d 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -444,13 +444,14 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
unsigned int num_buffers, unsigned int num_planes,
const unsigned plane_sizes[VB2_MAX_PLANES])
{
+ unsigned int q_num_buffers = vb2_get_num_buffers(q);
unsigned int buffer, plane;
struct vb2_buffer *vb;
int ret;
/* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
num_buffers = min_t(unsigned int, num_buffers,
- VB2_MAX_FRAME - q->num_buffers);
+ VB2_MAX_FRAME - q_num_buffers);
for (buffer = 0; buffer < num_buffers; ++buffer) {
/* Allocate vb2 buffer structures */
@@ -470,7 +471,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
vb->planes[plane].min_length = plane_sizes[plane];
}
- vb2_queue_add_buffer(q, vb, q->num_buffers + buffer);
+ vb2_queue_add_buffer(q, vb, q_num_buffers + buffer);
call_void_bufop(q, init_buffer, vb);
/* Allocate video buffer memory for the MMAP type */
@@ -514,8 +515,9 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
{
unsigned int buffer;
struct vb2_buffer *vb;
+ unsigned int q_num_buffers = vb2_get_num_buffers(q);
- for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
+ for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
++buffer) {
vb = vb2_get_buffer(q, buffer);
if (!vb)
@@ -539,11 +541,12 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
{
unsigned int buffer;
+ unsigned int q_num_buffers = vb2_get_num_buffers(q);
lockdep_assert_held(&q->mmap_lock);
/* Call driver-provided cleanup function for each buffer, if provided */
- for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
+ for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
++buffer) {
struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
@@ -559,7 +562,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
* Check that all the calls were balanced during the life-time of this
* queue. If not then dump the counters to the kernel log.
*/
- if (q->num_buffers) {
+ if (q_num_buffers) {
bool unbalanced = q->cnt_start_streaming != q->cnt_stop_streaming ||
q->cnt_prepare_streaming != q->cnt_unprepare_streaming ||
q->cnt_wait_prepare != q->cnt_wait_finish;
@@ -585,7 +588,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
q->cnt_stop_streaming = 0;
q->cnt_unprepare_streaming = 0;
}
- for (buffer = 0; buffer < q->num_buffers; ++buffer) {
+ for (buffer = 0; buffer < vb2_get_num_buffers(q); buffer++) {
struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
bool unbalanced;
@@ -637,7 +640,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
#endif
/* Free vb2 buffers */
- for (buffer = q->num_buffers - buffers; buffer < q->num_buffers;
+ for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
++buffer) {
struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
@@ -649,7 +652,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
}
q->num_buffers -= buffers;
- if (!q->num_buffers) {
+ if (!vb2_get_num_buffers(q)) {
q->memory = VB2_MEMORY_UNKNOWN;
INIT_LIST_HEAD(&q->queued_list);
}
@@ -680,7 +683,7 @@ EXPORT_SYMBOL(vb2_buffer_in_use);
static bool __buffers_in_use(struct vb2_queue *q)
{
unsigned int buffer;
- for (buffer = 0; buffer < q->num_buffers; ++buffer) {
+ for (buffer = 0; buffer < vb2_get_num_buffers(q); ++buffer) {
struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
if (!vb)
@@ -806,6 +809,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned int flags, unsigned int *count)
{
unsigned int num_buffers, allocated_buffers, num_planes = 0;
+ unsigned int q_num_bufs = vb2_get_num_buffers(q);
unsigned plane_sizes[VB2_MAX_PLANES] = { };
bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
unsigned int i;
@@ -821,7 +825,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
return -EBUSY;
}
- if (*count == 0 || q->num_buffers != 0 ||
+ if (*count == 0 || q_num_bufs != 0 ||
(q->memory != VB2_MEMORY_UNKNOWN && q->memory != memory) ||
!verify_coherency_flags(q, non_coherent_mem)) {
/*
@@ -839,7 +843,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
* queued without ever calling STREAMON.
*/
__vb2_queue_cancel(q);
- __vb2_queue_free(q, q->num_buffers);
+ __vb2_queue_free(q, q_num_bufs);
mutex_unlock(&q->mmap_lock);
/*
@@ -934,7 +938,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
if (ret < 0) {
/*
* Note: __vb2_queue_free() will subtract 'allocated_buffers'
- * from q->num_buffers and it will reset q->memory to
+ * from already queued buffers and it will reset q->memory to
* VB2_MEMORY_UNKNOWN.
*/
__vb2_queue_free(q, allocated_buffers);
@@ -968,10 +972,11 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned int num_planes = 0, num_buffers, allocated_buffers;
unsigned plane_sizes[VB2_MAX_PLANES] = { };
bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
- bool no_previous_buffers = !q->num_buffers;
- int ret;
+ unsigned int q_num_bufs = vb2_get_num_buffers(q);
+ bool no_previous_buffers = !q_num_bufs;
+ int ret = 0;
- if (q->num_buffers == VB2_MAX_FRAME) {
+ if (q_num_bufs == VB2_MAX_FRAME) {
dprintk(q, 1, "maximum number of buffers already allocated\n");
return -ENOBUFS;
}
@@ -1000,7 +1005,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
return -EINVAL;
}
- num_buffers = min(*count, VB2_MAX_FRAME - q->num_buffers);
+ num_buffers = min(*count, VB2_MAX_FRAME - q_num_bufs);
if (requested_planes && requested_sizes) {
num_planes = requested_planes;
@@ -1032,7 +1037,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
num_buffers = allocated_buffers;
/*
- * q->num_buffers contains the total number of buffers, that the
+ * num_buffers contains the total number of buffers, that the
* queue driver has set up
*/
ret = call_qop(q, queue_setup, q, &num_buffers,
@@ -1053,7 +1058,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
if (ret < 0) {
/*
* Note: __vb2_queue_free() will subtract 'allocated_buffers'
- * from q->num_buffers and it will reset q->memory to
+ * from already queued buffers and it will reset q->memory to
* VB2_MEMORY_UNKNOWN.
*/
__vb2_queue_free(q, allocated_buffers);
@@ -1670,7 +1675,7 @@ static int vb2_start_streaming(struct vb2_queue *q)
* Forcefully reclaim buffers if the driver did not
* correctly return them to vb2.
*/
- for (i = 0; i < q->num_buffers; ++i) {
+ for (i = 0; i < vb2_get_num_buffers(q); ++i) {
vb = vb2_get_buffer(q, i);
if (!vb)
@@ -2076,7 +2081,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* to vb2 in stop_streaming().
*/
if (WARN_ON(atomic_read(&q->owned_by_drv_count))) {
- for (i = 0; i < q->num_buffers; ++i) {
+ for (i = 0; i < vb2_get_num_buffers(q); i++) {
struct vb2_buffer *vb = vb2_get_buffer(q, i);
if (!vb)
@@ -2120,7 +2125,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* call to __fill_user_buffer() after buf_finish(). That order can't
* be changed, so we can't move the buf_finish() to __vb2_dqbuf().
*/
- for (i = 0; i < q->num_buffers; ++i) {
+ for (i = 0; i < vb2_get_num_buffers(q); i++) {
struct vb2_buffer *vb;
struct media_request *req;
@@ -2168,6 +2173,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
int vb2_core_streamon(struct vb2_queue *q, unsigned int type)
{
+ unsigned int q_num_bufs = vb2_get_num_buffers(q);
int ret;
if (type != q->type) {
@@ -2180,12 +2186,12 @@ int vb2_core_streamon(struct vb2_queue *q, unsigned int type)
return 0;
}
- if (!q->num_buffers) {
+ if (!q_num_bufs) {
dprintk(q, 1, "no buffers have been allocated\n");
return -EINVAL;
}
- if (q->num_buffers < q->min_buffers_needed) {
+ if (q_num_bufs < q->min_buffers_needed) {
dprintk(q, 1, "need at least %u allocated buffers\n",
q->min_buffers_needed);
return -EINVAL;
@@ -2513,7 +2519,8 @@ void vb2_core_queue_release(struct vb2_queue *q)
__vb2_cleanup_fileio(q);
__vb2_queue_cancel(q);
mutex_lock(&q->mmap_lock);
- __vb2_queue_free(q, q->num_buffers);
+ __vb2_queue_free(q, vb2_get_num_buffers(q));
+ q->num_buffers = 0;
mutex_unlock(&q->mmap_lock);
}
EXPORT_SYMBOL_GPL(vb2_core_queue_release);
@@ -2542,7 +2549,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
/*
* Start file I/O emulator only if streaming API has not been used yet.
*/
- if (q->num_buffers == 0 && !vb2_fileio_is_active(q)) {
+ if (vb2_get_num_buffers(q) == 0 && !vb2_fileio_is_active(q)) {
if (!q->is_output && (q->io_modes & VB2_READ) &&
(req_events & (EPOLLIN | EPOLLRDNORM))) {
if (__vb2_init_fileio(q, 1))
@@ -2580,7 +2587,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
* For output streams you can call write() as long as there are fewer
* buffers queued than there are buffers available.
*/
- if (q->is_output && q->fileio && q->queued_count < q->num_buffers)
+ if (q->is_output && q->fileio && q->queued_count < vb2_get_num_buffers(q))
return EPOLLOUT | EPOLLWRNORM;
if (list_empty(&q->done_list)) {
@@ -2629,8 +2636,8 @@ struct vb2_fileio_buf {
* struct vb2_fileio_data - queue context used by file io emulator
*
* @cur_index: the index of the buffer currently being read from or
- * written to. If equal to q->num_buffers then a new buffer
- * must be dequeued.
+ * written to. If equal to number of already queued buffers
+ * then a new buffer must be dequeued.
* @initial_index: in the read() case all buffers are queued up immediately
* in __vb2_init_fileio() and __vb2_perform_fileio() just cycles
* buffers. However, in the write() case no buffers are initially
@@ -2640,7 +2647,7 @@ struct vb2_fileio_buf {
* buffers. This means that initially __vb2_perform_fileio()
* needs to know what buffer index to use when it is queuing up
* the buffers for the first time. That initial index is stored
- * in this field. Once it is equal to q->num_buffers all
+ * in this field. Once it is equal to num_buffers all
* available buffers have been queued and __vb2_perform_fileio()
* should start the normal dequeue/queue cycle.
*
@@ -2690,7 +2697,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
/*
* Check if streaming api has not been already activated.
*/
- if (q->streaming || q->num_buffers > 0)
+ if (q->streaming || vb2_get_num_buffers(q) > 0)
return -EBUSY;
/*
@@ -2740,7 +2747,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
/*
* Get kernel address of each buffer.
*/
- for (i = 0; i < q->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(q); i++) {
/* vb can never be NULL when using fileio. */
vb = vb2_get_buffer(q, i);
@@ -2759,18 +2766,23 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
/*
* Queue all buffers.
*/
- for (i = 0; i < q->num_buffers; i++) {
- ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
+ for (i = 0; i < vb2_get_num_buffers(q); i++) {
+ struct vb2_buffer *vb2 = vb2_get_buffer(q, i);
+
+ if (!vb2)
+ continue;
+
+ ret = vb2_core_qbuf(q, vb2, NULL, NULL);
if (ret)
goto err_reqbufs;
fileio->bufs[i].queued = 1;
}
/*
* All buffers have been queued, so mark that by setting
- * initial_index to q->num_buffers
+ * initial_index to num_buffers
*/
- fileio->initial_index = q->num_buffers;
- fileio->cur_index = q->num_buffers;
+ fileio->initial_index = vb2_get_num_buffers(q);
+ fileio->cur_index = fileio->initial_index;
}
/*
@@ -2964,12 +2976,12 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
* If we are queuing up buffers for the first time, then
* increase initial_index by one.
*/
- if (fileio->initial_index < q->num_buffers)
+ if (fileio->initial_index < vb2_get_num_buffers(q))
fileio->initial_index++;
/*
* The next buffer to use is either a buffer that's going to be
- * queued for the first time (initial_index < q->num_buffers)
- * or it is equal to q->num_buffers, meaning that the next
+ * queued for the first time (initial_index < num_buffers)
+ * or it is equal to num_buffers, meaning that the next
* time we need to dequeue a buffer since we've now queued up
* all the 'first time' buffers.
*/
@@ -3016,7 +3028,7 @@ static int vb2_thread(void *data)
int ret = 0;
if (q->is_output) {
- prequeue = q->num_buffers;
+ prequeue = vb2_get_num_buffers(q);
copy_timestamp = q->copy_timestamp;
}
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index c6ebc8d2c537..7d798fb15c0b 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -627,7 +627,7 @@ struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp)
* This loop doesn't scale if there is a really large number of buffers.
* Maybe something more efficient will be needed in this case.
*/
- for (i = 0; i < q->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(q); i++) {
vb2 = vb2_get_buffer(q, i);
if (!vb2)
@@ -761,7 +761,7 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
fill_buf_caps(q, &create->capabilities);
validate_memory_flags(q, create->memory, &create->flags);
- create->index = q->num_buffers;
+ create->index = vb2_get_num_buffers(q);
if (create->count == 0)
return ret != -EBUSY ? ret : 0;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 09/56] media: amphion: Use vb2_get_buffer() instead of directly access to buffers array
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Zhou Peng
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer so check the return value of all of them.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ming Qian <ming.qian@nxp.com>
CC: Zhou Peng <eagle.zhou@nxp.com>
---
drivers/media/platform/amphion/vpu_dbg.c | 22 ++++++++++++++++++----
1 file changed, 18 insertions(+), 4 deletions(-)
diff --git a/drivers/media/platform/amphion/vpu_dbg.c b/drivers/media/platform/amphion/vpu_dbg.c
index 982c2c777484..a462d6fe4ea9 100644
--- a/drivers/media/platform/amphion/vpu_dbg.c
+++ b/drivers/media/platform/amphion/vpu_dbg.c
@@ -140,11 +140,18 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
vq = v4l2_m2m_get_src_vq(inst->fh.m2m_ctx);
for (i = 0; i < vq->num_buffers; i++) {
- struct vb2_buffer *vb = vq->bufs[i];
- struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct vb2_buffer *vb;
+ struct vb2_v4l2_buffer *vbuf;
+
+ vb = vb2_get_buffer(vq, i);
+ if (!vb)
+ continue;
if (vb->state == VB2_BUF_STATE_DEQUEUED)
continue;
+
+ vbuf = to_vb2_v4l2_buffer(vb);
+
num = scnprintf(str, sizeof(str),
"output [%2d] state = %10s, %8s\n",
i, vb2_stat_name[vb->state],
@@ -155,11 +162,18 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
vq = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
for (i = 0; i < vq->num_buffers; i++) {
- struct vb2_buffer *vb = vq->bufs[i];
- struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct vb2_buffer *vb;
+ struct vb2_v4l2_buffer *vbuf;
+
+ vb = vb2_get_buffer(vq, i);
+ if (!vb)
+ continue;
if (vb->state == VB2_BUF_STATE_DEQUEUED)
continue;
+
+ vbuf = to_vb2_v4l2_buffer(vb);
+
num = scnprintf(str, sizeof(str),
"capture[%2d] state = %10s, %8s\n",
i, vb2_stat_name[vb->state],
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 09/56] media: amphion: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Zhou Peng
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer so check the return value of all of them.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ming Qian <ming.qian@nxp.com>
CC: Zhou Peng <eagle.zhou@nxp.com>
---
drivers/media/platform/amphion/vpu_dbg.c | 22 ++++++++++++++++++----
1 file changed, 18 insertions(+), 4 deletions(-)
diff --git a/drivers/media/platform/amphion/vpu_dbg.c b/drivers/media/platform/amphion/vpu_dbg.c
index 982c2c777484..a462d6fe4ea9 100644
--- a/drivers/media/platform/amphion/vpu_dbg.c
+++ b/drivers/media/platform/amphion/vpu_dbg.c
@@ -140,11 +140,18 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
vq = v4l2_m2m_get_src_vq(inst->fh.m2m_ctx);
for (i = 0; i < vq->num_buffers; i++) {
- struct vb2_buffer *vb = vq->bufs[i];
- struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct vb2_buffer *vb;
+ struct vb2_v4l2_buffer *vbuf;
+
+ vb = vb2_get_buffer(vq, i);
+ if (!vb)
+ continue;
if (vb->state == VB2_BUF_STATE_DEQUEUED)
continue;
+
+ vbuf = to_vb2_v4l2_buffer(vb);
+
num = scnprintf(str, sizeof(str),
"output [%2d] state = %10s, %8s\n",
i, vb2_stat_name[vb->state],
@@ -155,11 +162,18 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
vq = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
for (i = 0; i < vq->num_buffers; i++) {
- struct vb2_buffer *vb = vq->bufs[i];
- struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct vb2_buffer *vb;
+ struct vb2_v4l2_buffer *vbuf;
+
+ vb = vb2_get_buffer(vq, i);
+ if (!vb)
+ continue;
if (vb->state == VB2_BUF_STATE_DEQUEUED)
continue;
+
+ vbuf = to_vb2_v4l2_buffer(vb);
+
num = scnprintf(str, sizeof(str),
"capture[%2d] state = %10s, %8s\n",
i, vb2_stat_name[vb->state],
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 09/56] media: amphion: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Zhou Peng
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer so check the return value of all of them.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ming Qian <ming.qian@nxp.com>
CC: Zhou Peng <eagle.zhou@nxp.com>
---
drivers/media/platform/amphion/vpu_dbg.c | 22 ++++++++++++++++++----
1 file changed, 18 insertions(+), 4 deletions(-)
diff --git a/drivers/media/platform/amphion/vpu_dbg.c b/drivers/media/platform/amphion/vpu_dbg.c
index 982c2c777484..a462d6fe4ea9 100644
--- a/drivers/media/platform/amphion/vpu_dbg.c
+++ b/drivers/media/platform/amphion/vpu_dbg.c
@@ -140,11 +140,18 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
vq = v4l2_m2m_get_src_vq(inst->fh.m2m_ctx);
for (i = 0; i < vq->num_buffers; i++) {
- struct vb2_buffer *vb = vq->bufs[i];
- struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct vb2_buffer *vb;
+ struct vb2_v4l2_buffer *vbuf;
+
+ vb = vb2_get_buffer(vq, i);
+ if (!vb)
+ continue;
if (vb->state == VB2_BUF_STATE_DEQUEUED)
continue;
+
+ vbuf = to_vb2_v4l2_buffer(vb);
+
num = scnprintf(str, sizeof(str),
"output [%2d] state = %10s, %8s\n",
i, vb2_stat_name[vb->state],
@@ -155,11 +162,18 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
vq = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
for (i = 0; i < vq->num_buffers; i++) {
- struct vb2_buffer *vb = vq->bufs[i];
- struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
+ struct vb2_buffer *vb;
+ struct vb2_v4l2_buffer *vbuf;
+
+ vb = vb2_get_buffer(vq, i);
+ if (!vb)
+ continue;
if (vb->state == VB2_BUF_STATE_DEQUEUED)
continue;
+
+ vbuf = to_vb2_v4l2_buffer(vb);
+
num = scnprintf(str, sizeof(str),
"capture[%2d] state = %10s, %8s\n",
i, vb2_stat_name[vb->state],
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 10/56] media: amphion: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Zhou Peng
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ming Qian <ming.qian@nxp.com>
CC: Zhou Peng <eagle.zhou@nxp.com>
---
drivers/media/platform/amphion/vpu_dbg.c | 8 ++++----
drivers/media/platform/amphion/vpu_v4l2.c | 4 ++--
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/media/platform/amphion/vpu_dbg.c b/drivers/media/platform/amphion/vpu_dbg.c
index a462d6fe4ea9..940e5bda5fa3 100644
--- a/drivers/media/platform/amphion/vpu_dbg.c
+++ b/drivers/media/platform/amphion/vpu_dbg.c
@@ -87,7 +87,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
num = scnprintf(str, sizeof(str),
"output (%2d, %2d): fmt = %c%c%c%c %d x %d, %d;",
vb2_is_streaming(vq),
- vq->num_buffers,
+ vb2_get_num_buffers(vq),
inst->out_format.pixfmt,
inst->out_format.pixfmt >> 8,
inst->out_format.pixfmt >> 16,
@@ -111,7 +111,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
num = scnprintf(str, sizeof(str),
"capture(%2d, %2d): fmt = %c%c%c%c %d x %d, %d;",
vb2_is_streaming(vq),
- vq->num_buffers,
+ vb2_get_num_buffers(vq),
inst->cap_format.pixfmt,
inst->cap_format.pixfmt >> 8,
inst->cap_format.pixfmt >> 16,
@@ -139,7 +139,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
return 0;
vq = v4l2_m2m_get_src_vq(inst->fh.m2m_ctx);
- for (i = 0; i < vq->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(vq); i++) {
struct vb2_buffer *vb;
struct vb2_v4l2_buffer *vbuf;
@@ -161,7 +161,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
}
vq = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
- for (i = 0; i < vq->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(vq); i++) {
struct vb2_buffer *vb;
struct vb2_v4l2_buffer *vbuf;
diff --git a/drivers/media/platform/amphion/vpu_v4l2.c b/drivers/media/platform/amphion/vpu_v4l2.c
index 0f6e4c666440..87afb4a18d5d 100644
--- a/drivers/media/platform/amphion/vpu_v4l2.c
+++ b/drivers/media/platform/amphion/vpu_v4l2.c
@@ -439,7 +439,7 @@ int vpu_get_num_buffers(struct vpu_inst *inst, u32 type)
else
q = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
- return q->num_buffers;
+ return vb2_get_num_buffers(q);
}
static void vpu_m2m_device_run(void *priv)
@@ -587,7 +587,7 @@ static int vpu_vb2_start_streaming(struct vb2_queue *q, unsigned int count)
fmt->sizeimage[0], fmt->bytesperline[0],
fmt->sizeimage[1], fmt->bytesperline[1],
fmt->sizeimage[2], fmt->bytesperline[2],
- q->num_buffers);
+ vb2_get_num_buffers(q));
vb2_clear_last_buffer_dequeued(q);
ret = call_vop(inst, start, q->type);
if (ret)
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 10/56] media: amphion: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Zhou Peng
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ming Qian <ming.qian@nxp.com>
CC: Zhou Peng <eagle.zhou@nxp.com>
---
drivers/media/platform/amphion/vpu_dbg.c | 8 ++++----
drivers/media/platform/amphion/vpu_v4l2.c | 4 ++--
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/media/platform/amphion/vpu_dbg.c b/drivers/media/platform/amphion/vpu_dbg.c
index a462d6fe4ea9..940e5bda5fa3 100644
--- a/drivers/media/platform/amphion/vpu_dbg.c
+++ b/drivers/media/platform/amphion/vpu_dbg.c
@@ -87,7 +87,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
num = scnprintf(str, sizeof(str),
"output (%2d, %2d): fmt = %c%c%c%c %d x %d, %d;",
vb2_is_streaming(vq),
- vq->num_buffers,
+ vb2_get_num_buffers(vq),
inst->out_format.pixfmt,
inst->out_format.pixfmt >> 8,
inst->out_format.pixfmt >> 16,
@@ -111,7 +111,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
num = scnprintf(str, sizeof(str),
"capture(%2d, %2d): fmt = %c%c%c%c %d x %d, %d;",
vb2_is_streaming(vq),
- vq->num_buffers,
+ vb2_get_num_buffers(vq),
inst->cap_format.pixfmt,
inst->cap_format.pixfmt >> 8,
inst->cap_format.pixfmt >> 16,
@@ -139,7 +139,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
return 0;
vq = v4l2_m2m_get_src_vq(inst->fh.m2m_ctx);
- for (i = 0; i < vq->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(vq); i++) {
struct vb2_buffer *vb;
struct vb2_v4l2_buffer *vbuf;
@@ -161,7 +161,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
}
vq = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
- for (i = 0; i < vq->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(vq); i++) {
struct vb2_buffer *vb;
struct vb2_v4l2_buffer *vbuf;
diff --git a/drivers/media/platform/amphion/vpu_v4l2.c b/drivers/media/platform/amphion/vpu_v4l2.c
index 0f6e4c666440..87afb4a18d5d 100644
--- a/drivers/media/platform/amphion/vpu_v4l2.c
+++ b/drivers/media/platform/amphion/vpu_v4l2.c
@@ -439,7 +439,7 @@ int vpu_get_num_buffers(struct vpu_inst *inst, u32 type)
else
q = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
- return q->num_buffers;
+ return vb2_get_num_buffers(q);
}
static void vpu_m2m_device_run(void *priv)
@@ -587,7 +587,7 @@ static int vpu_vb2_start_streaming(struct vb2_queue *q, unsigned int count)
fmt->sizeimage[0], fmt->bytesperline[0],
fmt->sizeimage[1], fmt->bytesperline[1],
fmt->sizeimage[2], fmt->bytesperline[2],
- q->num_buffers);
+ vb2_get_num_buffers(q));
vb2_clear_last_buffer_dequeued(q);
ret = call_vop(inst, start, q->type);
if (ret)
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 10/56] media: amphion: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Zhou Peng
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ming Qian <ming.qian@nxp.com>
CC: Zhou Peng <eagle.zhou@nxp.com>
---
drivers/media/platform/amphion/vpu_dbg.c | 8 ++++----
drivers/media/platform/amphion/vpu_v4l2.c | 4 ++--
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/media/platform/amphion/vpu_dbg.c b/drivers/media/platform/amphion/vpu_dbg.c
index a462d6fe4ea9..940e5bda5fa3 100644
--- a/drivers/media/platform/amphion/vpu_dbg.c
+++ b/drivers/media/platform/amphion/vpu_dbg.c
@@ -87,7 +87,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
num = scnprintf(str, sizeof(str),
"output (%2d, %2d): fmt = %c%c%c%c %d x %d, %d;",
vb2_is_streaming(vq),
- vq->num_buffers,
+ vb2_get_num_buffers(vq),
inst->out_format.pixfmt,
inst->out_format.pixfmt >> 8,
inst->out_format.pixfmt >> 16,
@@ -111,7 +111,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
num = scnprintf(str, sizeof(str),
"capture(%2d, %2d): fmt = %c%c%c%c %d x %d, %d;",
vb2_is_streaming(vq),
- vq->num_buffers,
+ vb2_get_num_buffers(vq),
inst->cap_format.pixfmt,
inst->cap_format.pixfmt >> 8,
inst->cap_format.pixfmt >> 16,
@@ -139,7 +139,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
return 0;
vq = v4l2_m2m_get_src_vq(inst->fh.m2m_ctx);
- for (i = 0; i < vq->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(vq); i++) {
struct vb2_buffer *vb;
struct vb2_v4l2_buffer *vbuf;
@@ -161,7 +161,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
}
vq = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
- for (i = 0; i < vq->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(vq); i++) {
struct vb2_buffer *vb;
struct vb2_v4l2_buffer *vbuf;
diff --git a/drivers/media/platform/amphion/vpu_v4l2.c b/drivers/media/platform/amphion/vpu_v4l2.c
index 0f6e4c666440..87afb4a18d5d 100644
--- a/drivers/media/platform/amphion/vpu_v4l2.c
+++ b/drivers/media/platform/amphion/vpu_v4l2.c
@@ -439,7 +439,7 @@ int vpu_get_num_buffers(struct vpu_inst *inst, u32 type)
else
q = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
- return q->num_buffers;
+ return vb2_get_num_buffers(q);
}
static void vpu_m2m_device_run(void *priv)
@@ -587,7 +587,7 @@ static int vpu_vb2_start_streaming(struct vb2_queue *q, unsigned int count)
fmt->sizeimage[0], fmt->bytesperline[0],
fmt->sizeimage[1], fmt->bytesperline[1],
fmt->sizeimage[2], fmt->bytesperline[2],
- q->num_buffers);
+ vb2_get_num_buffers(q));
vb2_clear_last_buffer_dequeued(q);
ret = call_vop(inst, start, q->type);
if (ret)
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 11/56] media: mediatek: jpeg: Use vb2_get_buffer() instead of directly access to buffers array
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Bin Liu, Matthias Brugger
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer so check the return value of all of them.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Bin Liu <bin.liu@mediatek.com>
CC: Matthias Brugger <matthias.bgg@gmail.com>
---
drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
index 7194f88edc0f..73a063b1569b 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
@@ -598,12 +598,11 @@ static int mtk_jpeg_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
goto end;
vq = v4l2_m2m_get_vq(fh->m2m_ctx, buf->type);
- if (buf->index >= vq->num_buffers) {
- dev_err(ctx->jpeg->dev, "buffer index out of range\n");
+ vb = vb2_get_buffer(vq, buf->index);
+ if (!vb) {
+ dev_err(ctx->jpeg->dev, "buffer not found\n");
return -EINVAL;
}
-
- vb = vq->bufs[buf->index];
jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(vb);
jpeg_src_buf->bs_size = buf->m.planes[0].bytesused;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 11/56] media: mediatek: jpeg: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Bin Liu, Matthias Brugger
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer so check the return value of all of them.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Bin Liu <bin.liu@mediatek.com>
CC: Matthias Brugger <matthias.bgg@gmail.com>
---
drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
index 7194f88edc0f..73a063b1569b 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
@@ -598,12 +598,11 @@ static int mtk_jpeg_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
goto end;
vq = v4l2_m2m_get_vq(fh->m2m_ctx, buf->type);
- if (buf->index >= vq->num_buffers) {
- dev_err(ctx->jpeg->dev, "buffer index out of range\n");
+ vb = vb2_get_buffer(vq, buf->index);
+ if (!vb) {
+ dev_err(ctx->jpeg->dev, "buffer not found\n");
return -EINVAL;
}
-
- vb = vq->bufs[buf->index];
jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(vb);
jpeg_src_buf->bs_size = buf->m.planes[0].bytesused;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 11/56] media: mediatek: jpeg: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Bin Liu, Matthias Brugger
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer so check the return value of all of them.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Bin Liu <bin.liu@mediatek.com>
CC: Matthias Brugger <matthias.bgg@gmail.com>
---
drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
index 7194f88edc0f..73a063b1569b 100644
--- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
+++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
@@ -598,12 +598,11 @@ static int mtk_jpeg_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
goto end;
vq = v4l2_m2m_get_vq(fh->m2m_ctx, buf->type);
- if (buf->index >= vq->num_buffers) {
- dev_err(ctx->jpeg->dev, "buffer index out of range\n");
+ vb = vb2_get_buffer(vq, buf->index);
+ if (!vb) {
+ dev_err(ctx->jpeg->dev, "buffer not found\n");
return -EINVAL;
}
-
- vb = vq->bufs[buf->index];
jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(vb);
jpeg_src_buf->bs_size = buf->m.planes[0].bytesused;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 12/56] media: mediatek: vdec: Remove useless loop
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Bin Liu, Matthias Brugger
Simplify code by removing useless loop by using video buffer index.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Bin Liu <bin.liu@mediatek.com>
CC: Matthias Brugger <matthias.bgg@gmail.com>
---
.../mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
index e393e3e668f8..69d37b93bd35 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
@@ -1695,13 +1695,8 @@ static int vdec_vp9_slice_setup_core_buffer(struct vdec_vp9_slice_instance *inst
return -EINVAL;
/* update internal buffer's width/height */
- for (i = 0; i < vq->num_buffers; i++) {
- if (vb == vq->bufs[i]) {
- instance->dpb[i].width = w;
- instance->dpb[i].height = h;
- break;
- }
- }
+ instance->dpb[vb->index].width = w;
+ instance->dpb[vb->index].height = h;
/*
* get buffer's width/height from instance
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 12/56] media: mediatek: vdec: Remove useless loop
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Bin Liu, Matthias Brugger
Simplify code by removing useless loop by using video buffer index.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Bin Liu <bin.liu@mediatek.com>
CC: Matthias Brugger <matthias.bgg@gmail.com>
---
.../mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
index e393e3e668f8..69d37b93bd35 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
@@ -1695,13 +1695,8 @@ static int vdec_vp9_slice_setup_core_buffer(struct vdec_vp9_slice_instance *inst
return -EINVAL;
/* update internal buffer's width/height */
- for (i = 0; i < vq->num_buffers; i++) {
- if (vb == vq->bufs[i]) {
- instance->dpb[i].width = w;
- instance->dpb[i].height = h;
- break;
- }
- }
+ instance->dpb[vb->index].width = w;
+ instance->dpb[vb->index].height = h;
/*
* get buffer's width/height from instance
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 12/56] media: mediatek: vdec: Remove useless loop
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Bin Liu, Matthias Brugger
Simplify code by removing useless loop by using video buffer index.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Bin Liu <bin.liu@mediatek.com>
CC: Matthias Brugger <matthias.bgg@gmail.com>
---
.../mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
index e393e3e668f8..69d37b93bd35 100644
--- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
+++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
@@ -1695,13 +1695,8 @@ static int vdec_vp9_slice_setup_core_buffer(struct vdec_vp9_slice_instance *inst
return -EINVAL;
/* update internal buffer's width/height */
- for (i = 0; i < vq->num_buffers; i++) {
- if (vb == vq->bufs[i]) {
- instance->dpb[i].width = w;
- instance->dpb[i].height = h;
- break;
- }
- }
+ instance->dpb[vb->index].width = w;
+ instance->dpb[vb->index].height = h;
/*
* get buffer's width/height from instance
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 13/56] media: mediatek: vcodec: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Bin Liu, Matthias Brugger
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Bin Liu <bin.liu@mediatek.com>
CC: Matthias Brugger <matthias.bgg@gmail.com>
---
drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
index eb381fa6e7d1..181884e798fd 100644
--- a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
+++ b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
@@ -912,7 +912,7 @@ static int vb2ops_venc_start_streaming(struct vb2_queue *q, unsigned int count)
return 0;
err_start_stream:
- for (i = 0; i < q->num_buffers; ++i) {
+ for (i = 0; i < vb2_get_num_buffers(q); ++i) {
struct vb2_buffer *buf = vb2_get_buffer(q, i);
/*
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 13/56] media: mediatek: vcodec: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Bin Liu, Matthias Brugger
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Bin Liu <bin.liu@mediatek.com>
CC: Matthias Brugger <matthias.bgg@gmail.com>
---
drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
index eb381fa6e7d1..181884e798fd 100644
--- a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
+++ b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
@@ -912,7 +912,7 @@ static int vb2ops_venc_start_streaming(struct vb2_queue *q, unsigned int count)
return 0;
err_start_stream:
- for (i = 0; i < q->num_buffers; ++i) {
+ for (i = 0; i < vb2_get_num_buffers(q); ++i) {
struct vb2_buffer *buf = vb2_get_buffer(q, i);
/*
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 13/56] media: mediatek: vcodec: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Bin Liu, Matthias Brugger
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Bin Liu <bin.liu@mediatek.com>
CC: Matthias Brugger <matthias.bgg@gmail.com>
---
drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
index eb381fa6e7d1..181884e798fd 100644
--- a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
+++ b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
@@ -912,7 +912,7 @@ static int vb2ops_venc_start_streaming(struct vb2_queue *q, unsigned int count)
return 0;
err_start_stream:
- for (i = 0; i < q->num_buffers; ++i) {
+ for (i = 0; i < vb2_get_num_buffers(q); ++i) {
struct vb2_buffer *buf = vb2_get_buffer(q, i);
/*
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 14/56] media: sti: hva: Use vb2_get_buffer() instead of directly access to buffers array
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Jean-Christophe Trotin
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer so check the return value of all of them.
Remove index range test since it is done by vb2_get_buffer().
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Jean-Christophe Trotin <jean-christophe.trotin@foss.st.com>
---
drivers/media/platform/st/sti/hva/hva-v4l2.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/media/platform/st/sti/hva/hva-v4l2.c b/drivers/media/platform/st/sti/hva/hva-v4l2.c
index 3a848ca32a0e..cfe83e9dc01b 100644
--- a/drivers/media/platform/st/sti/hva/hva-v4l2.c
+++ b/drivers/media/platform/st/sti/hva/hva-v4l2.c
@@ -569,14 +569,11 @@ static int hva_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
struct vb2_buffer *vb2_buf;
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, buf->type);
-
- if (buf->index >= vq->num_buffers) {
- dev_dbg(dev, "%s buffer index %d out of range (%d)\n",
- ctx->name, buf->index, vq->num_buffers);
+ vb2_buf = vb2_get_buffer(vq, buf->index);
+ if (!vb2_buf) {
+ dev_dbg(dev, "%s buffer index %d not found\n", ctx->name, buf->index);
return -EINVAL;
}
-
- vb2_buf = vb2_get_buffer(vq, buf->index);
stream = to_hva_stream(to_vb2_v4l2_buffer(vb2_buf));
stream->bytesused = buf->bytesused;
}
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 14/56] media: sti: hva: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Jean-Christophe Trotin
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer so check the return value of all of them.
Remove index range test since it is done by vb2_get_buffer().
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Jean-Christophe Trotin <jean-christophe.trotin@foss.st.com>
---
drivers/media/platform/st/sti/hva/hva-v4l2.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/media/platform/st/sti/hva/hva-v4l2.c b/drivers/media/platform/st/sti/hva/hva-v4l2.c
index 3a848ca32a0e..cfe83e9dc01b 100644
--- a/drivers/media/platform/st/sti/hva/hva-v4l2.c
+++ b/drivers/media/platform/st/sti/hva/hva-v4l2.c
@@ -569,14 +569,11 @@ static int hva_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
struct vb2_buffer *vb2_buf;
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, buf->type);
-
- if (buf->index >= vq->num_buffers) {
- dev_dbg(dev, "%s buffer index %d out of range (%d)\n",
- ctx->name, buf->index, vq->num_buffers);
+ vb2_buf = vb2_get_buffer(vq, buf->index);
+ if (!vb2_buf) {
+ dev_dbg(dev, "%s buffer index %d not found\n", ctx->name, buf->index);
return -EINVAL;
}
-
- vb2_buf = vb2_get_buffer(vq, buf->index);
stream = to_hva_stream(to_vb2_v4l2_buffer(vb2_buf));
stream->bytesused = buf->bytesused;
}
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 14/56] media: sti: hva: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Jean-Christophe Trotin
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer so check the return value of all of them.
Remove index range test since it is done by vb2_get_buffer().
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Jean-Christophe Trotin <jean-christophe.trotin@foss.st.com>
---
drivers/media/platform/st/sti/hva/hva-v4l2.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/media/platform/st/sti/hva/hva-v4l2.c b/drivers/media/platform/st/sti/hva/hva-v4l2.c
index 3a848ca32a0e..cfe83e9dc01b 100644
--- a/drivers/media/platform/st/sti/hva/hva-v4l2.c
+++ b/drivers/media/platform/st/sti/hva/hva-v4l2.c
@@ -569,14 +569,11 @@ static int hva_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
struct vb2_buffer *vb2_buf;
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, buf->type);
-
- if (buf->index >= vq->num_buffers) {
- dev_dbg(dev, "%s buffer index %d out of range (%d)\n",
- ctx->name, buf->index, vq->num_buffers);
+ vb2_buf = vb2_get_buffer(vq, buf->index);
+ if (!vb2_buf) {
+ dev_dbg(dev, "%s buffer index %d not found\n", ctx->name, buf->index);
return -EINVAL;
}
-
- vb2_buf = vb2_get_buffer(vq, buf->index);
stream = to_hva_stream(to_vb2_v4l2_buffer(vb2_buf));
stream->bytesused = buf->bytesused;
}
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 15/56] media: visl: Use vb2_get_buffer() instead of directly access to buffers array
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Daniel Almeida
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer so check the return value of all of them.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Daniel Almeida <daniel.almeida@collabora.com>
CC: Mauro Carvalho Chehab <mchehab@kernel.org>
---
drivers/media/test-drivers/visl/visl-dec.c | 28 ++++++++++++++++------
1 file changed, 21 insertions(+), 7 deletions(-)
diff --git a/drivers/media/test-drivers/visl/visl-dec.c b/drivers/media/test-drivers/visl/visl-dec.c
index 318d675e5668..ba20ea998d19 100644
--- a/drivers/media/test-drivers/visl/visl-dec.c
+++ b/drivers/media/test-drivers/visl/visl-dec.c
@@ -290,13 +290,20 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
for (i = 0; i < out_q->num_buffers; i++) {
char entry[] = "index: %u, state: %s, request_fd: %d, ";
u32 old_len = len;
- char *q_status = visl_get_vb2_state(out_q->bufs[i]->state);
+ struct vb2_buffer *vb2;
+ char *q_status;
+
+ vb2 = vb2_get_buffer(out_q, i);
+ if (!vb2)
+ continue;
+
+ q_status = visl_get_vb2_state(vb2->state);
len += scnprintf(&buf[len], TPG_STR_BUF_SZ - len,
entry, i, q_status,
- to_vb2_v4l2_buffer(out_q->bufs[i])->request_fd);
+ to_vb2_v4l2_buffer(vb2)->request_fd);
- len += visl_fill_bytesused(to_vb2_v4l2_buffer(out_q->bufs[i]),
+ len += visl_fill_bytesused(to_vb2_v4l2_buffer(vb2),
&buf[len],
TPG_STR_BUF_SZ - len);
@@ -342,13 +349,20 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
len = 0;
for (i = 0; i < cap_q->num_buffers; i++) {
u32 old_len = len;
- char *q_status = visl_get_vb2_state(cap_q->bufs[i]->state);
+ struct vb2_buffer *vb2;
+ char *q_status;
+
+ vb2 = vb2_get_buffer(cap_q, i);
+ if (!vb2)
+ continue;
+
+ q_status = visl_get_vb2_state(vb2->state);
len += scnprintf(&buf[len], TPG_STR_BUF_SZ - len,
"index: %u, status: %s, timestamp: %llu, is_held: %d",
- cap_q->bufs[i]->index, q_status,
- cap_q->bufs[i]->timestamp,
- to_vb2_v4l2_buffer(cap_q->bufs[i])->is_held);
+ vb2->index, q_status,
+ vb2->timestamp,
+ to_vb2_v4l2_buffer(vb2)->is_held);
tpg_gen_text(&ctx->tpg, basep, line++ * line_height, 16, &buf[old_len]);
frame_dprintk(ctx->dev, run->dst->sequence, "%s", &buf[old_len]);
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 15/56] media: visl: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Daniel Almeida
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer so check the return value of all of them.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Daniel Almeida <daniel.almeida@collabora.com>
CC: Mauro Carvalho Chehab <mchehab@kernel.org>
---
drivers/media/test-drivers/visl/visl-dec.c | 28 ++++++++++++++++------
1 file changed, 21 insertions(+), 7 deletions(-)
diff --git a/drivers/media/test-drivers/visl/visl-dec.c b/drivers/media/test-drivers/visl/visl-dec.c
index 318d675e5668..ba20ea998d19 100644
--- a/drivers/media/test-drivers/visl/visl-dec.c
+++ b/drivers/media/test-drivers/visl/visl-dec.c
@@ -290,13 +290,20 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
for (i = 0; i < out_q->num_buffers; i++) {
char entry[] = "index: %u, state: %s, request_fd: %d, ";
u32 old_len = len;
- char *q_status = visl_get_vb2_state(out_q->bufs[i]->state);
+ struct vb2_buffer *vb2;
+ char *q_status;
+
+ vb2 = vb2_get_buffer(out_q, i);
+ if (!vb2)
+ continue;
+
+ q_status = visl_get_vb2_state(vb2->state);
len += scnprintf(&buf[len], TPG_STR_BUF_SZ - len,
entry, i, q_status,
- to_vb2_v4l2_buffer(out_q->bufs[i])->request_fd);
+ to_vb2_v4l2_buffer(vb2)->request_fd);
- len += visl_fill_bytesused(to_vb2_v4l2_buffer(out_q->bufs[i]),
+ len += visl_fill_bytesused(to_vb2_v4l2_buffer(vb2),
&buf[len],
TPG_STR_BUF_SZ - len);
@@ -342,13 +349,20 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
len = 0;
for (i = 0; i < cap_q->num_buffers; i++) {
u32 old_len = len;
- char *q_status = visl_get_vb2_state(cap_q->bufs[i]->state);
+ struct vb2_buffer *vb2;
+ char *q_status;
+
+ vb2 = vb2_get_buffer(cap_q, i);
+ if (!vb2)
+ continue;
+
+ q_status = visl_get_vb2_state(vb2->state);
len += scnprintf(&buf[len], TPG_STR_BUF_SZ - len,
"index: %u, status: %s, timestamp: %llu, is_held: %d",
- cap_q->bufs[i]->index, q_status,
- cap_q->bufs[i]->timestamp,
- to_vb2_v4l2_buffer(cap_q->bufs[i])->is_held);
+ vb2->index, q_status,
+ vb2->timestamp,
+ to_vb2_v4l2_buffer(vb2)->is_held);
tpg_gen_text(&ctx->tpg, basep, line++ * line_height, 16, &buf[old_len]);
frame_dprintk(ctx->dev, run->dst->sequence, "%s", &buf[old_len]);
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 15/56] media: visl: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Daniel Almeida
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer so check the return value of all of them.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Daniel Almeida <daniel.almeida@collabora.com>
CC: Mauro Carvalho Chehab <mchehab@kernel.org>
---
drivers/media/test-drivers/visl/visl-dec.c | 28 ++++++++++++++++------
1 file changed, 21 insertions(+), 7 deletions(-)
diff --git a/drivers/media/test-drivers/visl/visl-dec.c b/drivers/media/test-drivers/visl/visl-dec.c
index 318d675e5668..ba20ea998d19 100644
--- a/drivers/media/test-drivers/visl/visl-dec.c
+++ b/drivers/media/test-drivers/visl/visl-dec.c
@@ -290,13 +290,20 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
for (i = 0; i < out_q->num_buffers; i++) {
char entry[] = "index: %u, state: %s, request_fd: %d, ";
u32 old_len = len;
- char *q_status = visl_get_vb2_state(out_q->bufs[i]->state);
+ struct vb2_buffer *vb2;
+ char *q_status;
+
+ vb2 = vb2_get_buffer(out_q, i);
+ if (!vb2)
+ continue;
+
+ q_status = visl_get_vb2_state(vb2->state);
len += scnprintf(&buf[len], TPG_STR_BUF_SZ - len,
entry, i, q_status,
- to_vb2_v4l2_buffer(out_q->bufs[i])->request_fd);
+ to_vb2_v4l2_buffer(vb2)->request_fd);
- len += visl_fill_bytesused(to_vb2_v4l2_buffer(out_q->bufs[i]),
+ len += visl_fill_bytesused(to_vb2_v4l2_buffer(vb2),
&buf[len],
TPG_STR_BUF_SZ - len);
@@ -342,13 +349,20 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
len = 0;
for (i = 0; i < cap_q->num_buffers; i++) {
u32 old_len = len;
- char *q_status = visl_get_vb2_state(cap_q->bufs[i]->state);
+ struct vb2_buffer *vb2;
+ char *q_status;
+
+ vb2 = vb2_get_buffer(cap_q, i);
+ if (!vb2)
+ continue;
+
+ q_status = visl_get_vb2_state(vb2->state);
len += scnprintf(&buf[len], TPG_STR_BUF_SZ - len,
"index: %u, status: %s, timestamp: %llu, is_held: %d",
- cap_q->bufs[i]->index, q_status,
- cap_q->bufs[i]->timestamp,
- to_vb2_v4l2_buffer(cap_q->bufs[i])->is_held);
+ vb2->index, q_status,
+ vb2->timestamp,
+ to_vb2_v4l2_buffer(vb2)->is_held);
tpg_gen_text(&ctx->tpg, basep, line++ * line_height, 16, &buf[old_len]);
frame_dprintk(ctx->dev, run->dst->sequence, "%s", &buf[old_len]);
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 16/56] media: atomisp: Use vb2_get_buffer() instead of directly access to buffers array
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Hans de Goede, Sakari Ailus
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
No need to check the result of vb2_get_buffer, vb2_ioctl_dqbuf() already
checked that it is valid.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
CC: Mauro Carvalho Chehab <mchehab@kernel.org>
CC: Sakari Ailus <sakari.ailus@linux.intel.com>
---
drivers/staging/media/atomisp/pci/atomisp_ioctl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
index a8e4779d007f..a8a964b2f1a8 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
@@ -1059,7 +1059,7 @@ static int atomisp_dqbuf_wrapper(struct file *file, void *fh, struct v4l2_buffer
if (ret)
return ret;
- vb = pipe->vb_queue.bufs[buf->index];
+ vb = vb2_get_buffer(&pipe->vb_queue, buf->index);
frame = vb_to_frame(vb);
buf->reserved = asd->frame_status[buf->index];
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 16/56] media: atomisp: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Hans de Goede, Sakari Ailus
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
No need to check the result of vb2_get_buffer, vb2_ioctl_dqbuf() already
checked that it is valid.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
CC: Mauro Carvalho Chehab <mchehab@kernel.org>
CC: Sakari Ailus <sakari.ailus@linux.intel.com>
---
drivers/staging/media/atomisp/pci/atomisp_ioctl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
index a8e4779d007f..a8a964b2f1a8 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
@@ -1059,7 +1059,7 @@ static int atomisp_dqbuf_wrapper(struct file *file, void *fh, struct v4l2_buffer
if (ret)
return ret;
- vb = pipe->vb_queue.bufs[buf->index];
+ vb = vb2_get_buffer(&pipe->vb_queue, buf->index);
frame = vb_to_frame(vb);
buf->reserved = asd->frame_status[buf->index];
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 16/56] media: atomisp: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Hans de Goede, Sakari Ailus
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
No need to check the result of vb2_get_buffer, vb2_ioctl_dqbuf() already
checked that it is valid.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
CC: Mauro Carvalho Chehab <mchehab@kernel.org>
CC: Sakari Ailus <sakari.ailus@linux.intel.com>
---
drivers/staging/media/atomisp/pci/atomisp_ioctl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
index a8e4779d007f..a8a964b2f1a8 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
@@ -1059,7 +1059,7 @@ static int atomisp_dqbuf_wrapper(struct file *file, void *fh, struct v4l2_buffer
if (ret)
return ret;
- vb = pipe->vb_queue.bufs[buf->index];
+ vb = vb2_get_buffer(&pipe->vb_queue, buf->index);
frame = vb_to_frame(vb);
buf->reserved = asd->frame_status[buf->index];
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 17/56] media: atomisp: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Hans de Goede, Sakari Ailus
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
CC: Sakari Ailus <sakari.ailus@linux.intel.com>
---
drivers/staging/media/atomisp/pci/atomisp_ioctl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
index a8a964b2f1a8..09c0091b920f 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
@@ -1028,7 +1028,7 @@ static int atomisp_qbuf_wrapper(struct file *file, void *fh, struct v4l2_buffer
struct atomisp_device *isp = video_get_drvdata(vdev);
struct atomisp_video_pipe *pipe = atomisp_to_video_pipe(vdev);
- if (buf->index >= vdev->queue->num_buffers)
+ if (buf->index >= vb2_get_num_buffers(vdev->queue))
return -EINVAL;
if (buf->reserved2 & ATOMISP_BUFFER_HAS_PER_FRAME_SETTING) {
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 17/56] media: atomisp: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Hans de Goede, Sakari Ailus
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
CC: Sakari Ailus <sakari.ailus@linux.intel.com>
---
drivers/staging/media/atomisp/pci/atomisp_ioctl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
index a8a964b2f1a8..09c0091b920f 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
@@ -1028,7 +1028,7 @@ static int atomisp_qbuf_wrapper(struct file *file, void *fh, struct v4l2_buffer
struct atomisp_device *isp = video_get_drvdata(vdev);
struct atomisp_video_pipe *pipe = atomisp_to_video_pipe(vdev);
- if (buf->index >= vdev->queue->num_buffers)
+ if (buf->index >= vb2_get_num_buffers(vdev->queue))
return -EINVAL;
if (buf->reserved2 & ATOMISP_BUFFER_HAS_PER_FRAME_SETTING) {
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 17/56] media: atomisp: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Hans de Goede, Sakari Ailus
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
CC: Sakari Ailus <sakari.ailus@linux.intel.com>
---
drivers/staging/media/atomisp/pci/atomisp_ioctl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
index a8a964b2f1a8..09c0091b920f 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c
@@ -1028,7 +1028,7 @@ static int atomisp_qbuf_wrapper(struct file *file, void *fh, struct v4l2_buffer
struct atomisp_device *isp = video_get_drvdata(vdev);
struct atomisp_video_pipe *pipe = atomisp_to_video_pipe(vdev);
- if (buf->index >= vdev->queue->num_buffers)
+ if (buf->index >= vb2_get_num_buffers(vdev->queue))
return -EINVAL;
if (buf->reserved2 & ATOMISP_BUFFER_HAS_PER_FRAME_SETTING) {
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 18/56] media: dvb-core: Use vb2_get_buffer() instead of directly access to buffers array
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer so check the return value of all of them.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/dvb-core/dvb_vb2.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
index b322ef179f05..3a966fdf814c 100644
--- a/drivers/media/dvb-core/dvb_vb2.c
+++ b/drivers/media/dvb-core/dvb_vb2.c
@@ -355,12 +355,13 @@ int dvb_vb2_reqbufs(struct dvb_vb2_ctx *ctx, struct dmx_requestbuffers *req)
int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
{
struct vb2_queue *q = &ctx->vb_q;
+ struct vb2_buffer *vb2 = vb2_get_buffer(q, b->index);
- if (b->index >= q->num_buffers) {
- dprintk(1, "[%s] buffer index out of range\n", ctx->name);
+ if (!vb2) {
+ dprintk(1, "[%s] invalid buffer index\n", ctx->name);
return -EINVAL;
}
- vb2_core_querybuf(&ctx->vb_q, q->bufs[b->index], b);
+ vb2_core_querybuf(&ctx->vb_q, vb2, b);
dprintk(3, "[%s] index=%d\n", ctx->name, b->index);
return 0;
}
@@ -385,13 +386,14 @@ int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp)
int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
{
struct vb2_queue *q = &ctx->vb_q;
+ struct vb2_buffer *vb2 = vb2_get_buffer(q, b->index);
int ret;
- if (b->index >= q->num_buffers) {
- dprintk(1, "[%s] buffer index out of range\n", ctx->name);
+ if (!vb2) {
+ dprintk(1, "[%s] invalid buffer index\n", ctx->name);
return -EINVAL;
}
- ret = vb2_core_qbuf(&ctx->vb_q, q->bufs[b->index], b, NULL);
+ ret = vb2_core_qbuf(&ctx->vb_q, vb2, b, NULL);
if (ret) {
dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
b->index, ret);
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 18/56] media: dvb-core: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer so check the return value of all of them.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/dvb-core/dvb_vb2.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
index b322ef179f05..3a966fdf814c 100644
--- a/drivers/media/dvb-core/dvb_vb2.c
+++ b/drivers/media/dvb-core/dvb_vb2.c
@@ -355,12 +355,13 @@ int dvb_vb2_reqbufs(struct dvb_vb2_ctx *ctx, struct dmx_requestbuffers *req)
int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
{
struct vb2_queue *q = &ctx->vb_q;
+ struct vb2_buffer *vb2 = vb2_get_buffer(q, b->index);
- if (b->index >= q->num_buffers) {
- dprintk(1, "[%s] buffer index out of range\n", ctx->name);
+ if (!vb2) {
+ dprintk(1, "[%s] invalid buffer index\n", ctx->name);
return -EINVAL;
}
- vb2_core_querybuf(&ctx->vb_q, q->bufs[b->index], b);
+ vb2_core_querybuf(&ctx->vb_q, vb2, b);
dprintk(3, "[%s] index=%d\n", ctx->name, b->index);
return 0;
}
@@ -385,13 +386,14 @@ int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp)
int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
{
struct vb2_queue *q = &ctx->vb_q;
+ struct vb2_buffer *vb2 = vb2_get_buffer(q, b->index);
int ret;
- if (b->index >= q->num_buffers) {
- dprintk(1, "[%s] buffer index out of range\n", ctx->name);
+ if (!vb2) {
+ dprintk(1, "[%s] invalid buffer index\n", ctx->name);
return -EINVAL;
}
- ret = vb2_core_qbuf(&ctx->vb_q, q->bufs[b->index], b, NULL);
+ ret = vb2_core_qbuf(&ctx->vb_q, vb2, b, NULL);
if (ret) {
dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
b->index, ret);
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 18/56] media: dvb-core: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
This allows us to change the type of the bufs in the future.
After each call to vb2_get_buffer() we need to be sure that we get
a valid pointer so check the return value of all of them.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/dvb-core/dvb_vb2.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
index b322ef179f05..3a966fdf814c 100644
--- a/drivers/media/dvb-core/dvb_vb2.c
+++ b/drivers/media/dvb-core/dvb_vb2.c
@@ -355,12 +355,13 @@ int dvb_vb2_reqbufs(struct dvb_vb2_ctx *ctx, struct dmx_requestbuffers *req)
int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
{
struct vb2_queue *q = &ctx->vb_q;
+ struct vb2_buffer *vb2 = vb2_get_buffer(q, b->index);
- if (b->index >= q->num_buffers) {
- dprintk(1, "[%s] buffer index out of range\n", ctx->name);
+ if (!vb2) {
+ dprintk(1, "[%s] invalid buffer index\n", ctx->name);
return -EINVAL;
}
- vb2_core_querybuf(&ctx->vb_q, q->bufs[b->index], b);
+ vb2_core_querybuf(&ctx->vb_q, vb2, b);
dprintk(3, "[%s] index=%d\n", ctx->name, b->index);
return 0;
}
@@ -385,13 +386,14 @@ int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp)
int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
{
struct vb2_queue *q = &ctx->vb_q;
+ struct vb2_buffer *vb2 = vb2_get_buffer(q, b->index);
int ret;
- if (b->index >= q->num_buffers) {
- dprintk(1, "[%s] buffer index out of range\n", ctx->name);
+ if (!vb2) {
+ dprintk(1, "[%s] invalid buffer index\n", ctx->name);
return -EINVAL;
}
- ret = vb2_core_qbuf(&ctx->vb_q, q->bufs[b->index], b, NULL);
+ ret = vb2_core_qbuf(&ctx->vb_q, vb2, b, NULL);
if (ret) {
dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
b->index, ret);
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 19/56] media: dvb-core: Do not initialize twice queue num_buffer field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
The above memset already zeroed all the ctx fields, it is useless
to do it here again.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/dvb-core/dvb_vb2.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
index 3a966fdf814c..a731b755a0b9 100644
--- a/drivers/media/dvb-core/dvb_vb2.c
+++ b/drivers/media/dvb-core/dvb_vb2.c
@@ -177,7 +177,6 @@ int dvb_vb2_init(struct dvb_vb2_ctx *ctx, const char *name, int nonblocking)
q->ops = &dvb_vb2_qops;
q->mem_ops = &vb2_vmalloc_memops;
q->buf_ops = &dvb_vb2_buf_ops;
- q->num_buffers = 0;
ret = vb2_core_queue_init(q);
if (ret) {
ctx->state = DVB_VB2_STATE_NONE;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 19/56] media: dvb-core: Do not initialize twice queue num_buffer field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
The above memset already zeroed all the ctx fields, it is useless
to do it here again.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/dvb-core/dvb_vb2.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
index 3a966fdf814c..a731b755a0b9 100644
--- a/drivers/media/dvb-core/dvb_vb2.c
+++ b/drivers/media/dvb-core/dvb_vb2.c
@@ -177,7 +177,6 @@ int dvb_vb2_init(struct dvb_vb2_ctx *ctx, const char *name, int nonblocking)
q->ops = &dvb_vb2_qops;
q->mem_ops = &vb2_vmalloc_memops;
q->buf_ops = &dvb_vb2_buf_ops;
- q->num_buffers = 0;
ret = vb2_core_queue_init(q);
if (ret) {
ctx->state = DVB_VB2_STATE_NONE;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 19/56] media: dvb-core: Do not initialize twice queue num_buffer field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
The above memset already zeroed all the ctx fields, it is useless
to do it here again.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/dvb-core/dvb_vb2.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
index 3a966fdf814c..a731b755a0b9 100644
--- a/drivers/media/dvb-core/dvb_vb2.c
+++ b/drivers/media/dvb-core/dvb_vb2.c
@@ -177,7 +177,6 @@ int dvb_vb2_init(struct dvb_vb2_ctx *ctx, const char *name, int nonblocking)
q->ops = &dvb_vb2_qops;
q->mem_ops = &vb2_vmalloc_memops;
q->buf_ops = &dvb_vb2_buf_ops;
- q->num_buffers = 0;
ret = vb2_core_queue_init(q);
if (ret) {
ctx->state = DVB_VB2_STATE_NONE;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 20/56] media: dvb-frontends: rtl2832: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Antti Palosaari
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Antti Palosaari <crope@iki.fi>
---
drivers/media/dvb-frontends/rtl2832_sdr.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/dvb-frontends/rtl2832_sdr.c b/drivers/media/dvb-frontends/rtl2832_sdr.c
index 02c619e51641..023db6e793f8 100644
--- a/drivers/media/dvb-frontends/rtl2832_sdr.c
+++ b/drivers/media/dvb-frontends/rtl2832_sdr.c
@@ -439,12 +439,13 @@ static int rtl2832_sdr_queue_setup(struct vb2_queue *vq,
{
struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
struct platform_device *pdev = dev->pdev;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev_dbg(&pdev->dev, "nbuffers=%d\n", *nbuffers);
/* Need at least 8 buffers */
- if (vq->num_buffers + *nbuffers < 8)
- *nbuffers = 8 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 8)
+ *nbuffers = 8 - q_num_bufs;
*nplanes = 1;
sizes[0] = PAGE_ALIGN(dev->buffersize);
dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]);
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 20/56] media: dvb-frontends: rtl2832: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Antti Palosaari
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Antti Palosaari <crope@iki.fi>
---
drivers/media/dvb-frontends/rtl2832_sdr.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/dvb-frontends/rtl2832_sdr.c b/drivers/media/dvb-frontends/rtl2832_sdr.c
index 02c619e51641..023db6e793f8 100644
--- a/drivers/media/dvb-frontends/rtl2832_sdr.c
+++ b/drivers/media/dvb-frontends/rtl2832_sdr.c
@@ -439,12 +439,13 @@ static int rtl2832_sdr_queue_setup(struct vb2_queue *vq,
{
struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
struct platform_device *pdev = dev->pdev;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev_dbg(&pdev->dev, "nbuffers=%d\n", *nbuffers);
/* Need at least 8 buffers */
- if (vq->num_buffers + *nbuffers < 8)
- *nbuffers = 8 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 8)
+ *nbuffers = 8 - q_num_bufs;
*nplanes = 1;
sizes[0] = PAGE_ALIGN(dev->buffersize);
dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]);
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 20/56] media: dvb-frontends: rtl2832: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Antti Palosaari
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Antti Palosaari <crope@iki.fi>
---
drivers/media/dvb-frontends/rtl2832_sdr.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/dvb-frontends/rtl2832_sdr.c b/drivers/media/dvb-frontends/rtl2832_sdr.c
index 02c619e51641..023db6e793f8 100644
--- a/drivers/media/dvb-frontends/rtl2832_sdr.c
+++ b/drivers/media/dvb-frontends/rtl2832_sdr.c
@@ -439,12 +439,13 @@ static int rtl2832_sdr_queue_setup(struct vb2_queue *vq,
{
struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
struct platform_device *pdev = dev->pdev;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev_dbg(&pdev->dev, "nbuffers=%d\n", *nbuffers);
/* Need at least 8 buffers */
- if (vq->num_buffers + *nbuffers < 8)
- *nbuffers = 8 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 8)
+ *nbuffers = 8 - q_num_bufs;
*nplanes = 1;
sizes[0] = PAGE_ALIGN(dev->buffersize);
dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]);
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 21/56] media: pci: dt3155: Remove useless check
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
min_buffers_needed is already set to 2 so remove this useless
check.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/pci/dt3155/dt3155.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/media/pci/dt3155/dt3155.c b/drivers/media/pci/dt3155/dt3155.c
index 548156b199cc..d09cde2f6ee4 100644
--- a/drivers/media/pci/dt3155/dt3155.c
+++ b/drivers/media/pci/dt3155/dt3155.c
@@ -128,8 +128,6 @@ dt3155_queue_setup(struct vb2_queue *vq,
struct dt3155_priv *pd = vb2_get_drv_priv(vq);
unsigned size = pd->width * pd->height;
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
if (*num_planes)
return sizes[0] < size ? -EINVAL : 0;
*num_planes = 1;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 21/56] media: pci: dt3155: Remove useless check
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
min_buffers_needed is already set to 2 so remove this useless
check.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/pci/dt3155/dt3155.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/media/pci/dt3155/dt3155.c b/drivers/media/pci/dt3155/dt3155.c
index 548156b199cc..d09cde2f6ee4 100644
--- a/drivers/media/pci/dt3155/dt3155.c
+++ b/drivers/media/pci/dt3155/dt3155.c
@@ -128,8 +128,6 @@ dt3155_queue_setup(struct vb2_queue *vq,
struct dt3155_priv *pd = vb2_get_drv_priv(vq);
unsigned size = pd->width * pd->height;
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
if (*num_planes)
return sizes[0] < size ? -EINVAL : 0;
*num_planes = 1;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 21/56] media: pci: dt3155: Remove useless check
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
min_buffers_needed is already set to 2 so remove this useless
check.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/pci/dt3155/dt3155.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/media/pci/dt3155/dt3155.c b/drivers/media/pci/dt3155/dt3155.c
index 548156b199cc..d09cde2f6ee4 100644
--- a/drivers/media/pci/dt3155/dt3155.c
+++ b/drivers/media/pci/dt3155/dt3155.c
@@ -128,8 +128,6 @@ dt3155_queue_setup(struct vb2_queue *vq,
struct dt3155_priv *pd = vb2_get_drv_priv(vq);
unsigned size = pd->width * pd->height;
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
if (*num_planes)
return sizes[0] < size ? -EINVAL : 0;
*num_planes = 1;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 22/56] media: pci: tw686x: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
---
drivers/media/pci/tw686x/tw686x-video.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/pci/tw686x/tw686x-video.c b/drivers/media/pci/tw686x/tw686x-video.c
index 3ebf7a2c95f0..6bc6d143d18c 100644
--- a/drivers/media/pci/tw686x/tw686x-video.c
+++ b/drivers/media/pci/tw686x/tw686x-video.c
@@ -423,6 +423,7 @@ static int tw686x_queue_setup(struct vb2_queue *vq,
unsigned int sizes[], struct device *alloc_devs[])
{
struct tw686x_video_channel *vc = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
unsigned int szimage =
(vc->width * vc->height * vc->format->depth) >> 3;
@@ -430,8 +431,8 @@ static int tw686x_queue_setup(struct vb2_queue *vq,
* Let's request at least three buffers: two for the
* DMA engine and one for userspace.
*/
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes) {
if (*nplanes != 1 || sizes[0] < szimage)
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 22/56] media: pci: tw686x: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
---
drivers/media/pci/tw686x/tw686x-video.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/pci/tw686x/tw686x-video.c b/drivers/media/pci/tw686x/tw686x-video.c
index 3ebf7a2c95f0..6bc6d143d18c 100644
--- a/drivers/media/pci/tw686x/tw686x-video.c
+++ b/drivers/media/pci/tw686x/tw686x-video.c
@@ -423,6 +423,7 @@ static int tw686x_queue_setup(struct vb2_queue *vq,
unsigned int sizes[], struct device *alloc_devs[])
{
struct tw686x_video_channel *vc = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
unsigned int szimage =
(vc->width * vc->height * vc->format->depth) >> 3;
@@ -430,8 +431,8 @@ static int tw686x_queue_setup(struct vb2_queue *vq,
* Let's request at least three buffers: two for the
* DMA engine and one for userspace.
*/
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes) {
if (*nplanes != 1 || sizes[0] < szimage)
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 22/56] media: pci: tw686x: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
---
drivers/media/pci/tw686x/tw686x-video.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/pci/tw686x/tw686x-video.c b/drivers/media/pci/tw686x/tw686x-video.c
index 3ebf7a2c95f0..6bc6d143d18c 100644
--- a/drivers/media/pci/tw686x/tw686x-video.c
+++ b/drivers/media/pci/tw686x/tw686x-video.c
@@ -423,6 +423,7 @@ static int tw686x_queue_setup(struct vb2_queue *vq,
unsigned int sizes[], struct device *alloc_devs[])
{
struct tw686x_video_channel *vc = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
unsigned int szimage =
(vc->width * vc->height * vc->format->depth) >> 3;
@@ -430,8 +431,8 @@ static int tw686x_queue_setup(struct vb2_queue *vq,
* Let's request at least three buffers: two for the
* DMA engine and one for userspace.
*/
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes) {
if (*nplanes != 1 || sizes[0] < szimage)
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 23/56] media: pci: cx18: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Sergey Kozlov, Abylay Ospan
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Sergey Kozlov <serjk@netup.ru>
CC: Abylay Ospan <aospan@netup.ru>
---
drivers/media/pci/cx18/cx18-streams.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/pci/cx18/cx18-streams.c b/drivers/media/pci/cx18/cx18-streams.c
index 597472754c4c..cfbc4a907802 100644
--- a/drivers/media/pci/cx18/cx18-streams.c
+++ b/drivers/media/pci/cx18/cx18-streams.c
@@ -104,6 +104,7 @@ static int cx18_queue_setup(struct vb2_queue *vq,
unsigned int *nbuffers, unsigned int *nplanes,
unsigned int sizes[], struct device *alloc_devs[])
{
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
struct cx18_stream *s = vb2_get_drv_priv(vq);
struct cx18 *cx = s->cx;
unsigned int szimage;
@@ -121,8 +122,8 @@ static int cx18_queue_setup(struct vb2_queue *vq,
* Let's request at least three buffers: two for the
* DMA engine and one for userspace.
*/
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes) {
if (*nplanes != 1 || sizes[0] < szimage)
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 23/56] media: pci: cx18: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Sergey Kozlov, Abylay Ospan
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Sergey Kozlov <serjk@netup.ru>
CC: Abylay Ospan <aospan@netup.ru>
---
drivers/media/pci/cx18/cx18-streams.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/pci/cx18/cx18-streams.c b/drivers/media/pci/cx18/cx18-streams.c
index 597472754c4c..cfbc4a907802 100644
--- a/drivers/media/pci/cx18/cx18-streams.c
+++ b/drivers/media/pci/cx18/cx18-streams.c
@@ -104,6 +104,7 @@ static int cx18_queue_setup(struct vb2_queue *vq,
unsigned int *nbuffers, unsigned int *nplanes,
unsigned int sizes[], struct device *alloc_devs[])
{
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
struct cx18_stream *s = vb2_get_drv_priv(vq);
struct cx18 *cx = s->cx;
unsigned int szimage;
@@ -121,8 +122,8 @@ static int cx18_queue_setup(struct vb2_queue *vq,
* Let's request at least three buffers: two for the
* DMA engine and one for userspace.
*/
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes) {
if (*nplanes != 1 || sizes[0] < szimage)
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 23/56] media: pci: cx18: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Sergey Kozlov, Abylay Ospan
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Sergey Kozlov <serjk@netup.ru>
CC: Abylay Ospan <aospan@netup.ru>
---
drivers/media/pci/cx18/cx18-streams.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/pci/cx18/cx18-streams.c b/drivers/media/pci/cx18/cx18-streams.c
index 597472754c4c..cfbc4a907802 100644
--- a/drivers/media/pci/cx18/cx18-streams.c
+++ b/drivers/media/pci/cx18/cx18-streams.c
@@ -104,6 +104,7 @@ static int cx18_queue_setup(struct vb2_queue *vq,
unsigned int *nbuffers, unsigned int *nplanes,
unsigned int sizes[], struct device *alloc_devs[])
{
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
struct cx18_stream *s = vb2_get_drv_priv(vq);
struct cx18 *cx = s->cx;
unsigned int szimage;
@@ -121,8 +122,8 @@ static int cx18_queue_setup(struct vb2_queue *vq,
* Let's request at least three buffers: two for the
* DMA engine and one for userspace.
*/
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes) {
if (*nplanes != 1 || sizes[0] < szimage)
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 24/56] media: pci: netup_unidvb: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Sergey Kozlov, Abylay Ospan
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Sergey Kozlov <serjk@netup.ru>
CC: Abylay Ospan <aospan@netup.ru>
---
drivers/media/pci/netup_unidvb/netup_unidvb_core.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/pci/netup_unidvb/netup_unidvb_core.c b/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
index d85bfbb77a25..557985ba25db 100644
--- a/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
+++ b/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
@@ -293,12 +293,13 @@ static int netup_unidvb_queue_setup(struct vb2_queue *vq,
struct device *alloc_devs[])
{
struct netup_dma *dma = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev_dbg(&dma->ndev->pci_dev->dev, "%s()\n", __func__);
*nplanes = 1;
- if (vq->num_buffers + *nbuffers < VIDEO_MAX_FRAME)
- *nbuffers = VIDEO_MAX_FRAME - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < VIDEO_MAX_FRAME)
+ *nbuffers = VIDEO_MAX_FRAME - q_num_bufs;
sizes[0] = PAGE_ALIGN(NETUP_DMA_PACKETS_COUNT * 188);
dev_dbg(&dma->ndev->pci_dev->dev, "%s() nbuffers=%d sizes[0]=%d\n",
__func__, *nbuffers, sizes[0]);
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 24/56] media: pci: netup_unidvb: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Sergey Kozlov, Abylay Ospan
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Sergey Kozlov <serjk@netup.ru>
CC: Abylay Ospan <aospan@netup.ru>
---
drivers/media/pci/netup_unidvb/netup_unidvb_core.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/pci/netup_unidvb/netup_unidvb_core.c b/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
index d85bfbb77a25..557985ba25db 100644
--- a/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
+++ b/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
@@ -293,12 +293,13 @@ static int netup_unidvb_queue_setup(struct vb2_queue *vq,
struct device *alloc_devs[])
{
struct netup_dma *dma = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev_dbg(&dma->ndev->pci_dev->dev, "%s()\n", __func__);
*nplanes = 1;
- if (vq->num_buffers + *nbuffers < VIDEO_MAX_FRAME)
- *nbuffers = VIDEO_MAX_FRAME - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < VIDEO_MAX_FRAME)
+ *nbuffers = VIDEO_MAX_FRAME - q_num_bufs;
sizes[0] = PAGE_ALIGN(NETUP_DMA_PACKETS_COUNT * 188);
dev_dbg(&dma->ndev->pci_dev->dev, "%s() nbuffers=%d sizes[0]=%d\n",
__func__, *nbuffers, sizes[0]);
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 24/56] media: pci: netup_unidvb: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Sergey Kozlov, Abylay Ospan
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Sergey Kozlov <serjk@netup.ru>
CC: Abylay Ospan <aospan@netup.ru>
---
drivers/media/pci/netup_unidvb/netup_unidvb_core.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/pci/netup_unidvb/netup_unidvb_core.c b/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
index d85bfbb77a25..557985ba25db 100644
--- a/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
+++ b/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
@@ -293,12 +293,13 @@ static int netup_unidvb_queue_setup(struct vb2_queue *vq,
struct device *alloc_devs[])
{
struct netup_dma *dma = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev_dbg(&dma->ndev->pci_dev->dev, "%s()\n", __func__);
*nplanes = 1;
- if (vq->num_buffers + *nbuffers < VIDEO_MAX_FRAME)
- *nbuffers = VIDEO_MAX_FRAME - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < VIDEO_MAX_FRAME)
+ *nbuffers = VIDEO_MAX_FRAME - q_num_bufs;
sizes[0] = PAGE_ALIGN(NETUP_DMA_PACKETS_COUNT * 188);
dev_dbg(&dma->ndev->pci_dev->dev, "%s() nbuffers=%d sizes[0]=%d\n",
__func__, *nbuffers, sizes[0]);
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 25/56] media: pci: tw68: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Fabrizio Castro
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
---
drivers/media/pci/tw68/tw68-video.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/media/pci/tw68/tw68-video.c b/drivers/media/pci/tw68/tw68-video.c
index 773a18702d36..35296c226019 100644
--- a/drivers/media/pci/tw68/tw68-video.c
+++ b/drivers/media/pci/tw68/tw68-video.c
@@ -360,13 +360,13 @@ static int tw68_queue_setup(struct vb2_queue *q,
unsigned int sizes[], struct device *alloc_devs[])
{
struct tw68_dev *dev = vb2_get_drv_priv(q);
- unsigned tot_bufs = q->num_buffers + *num_buffers;
+ unsigned tot_bufs = vb2_get_num_buffers(q) + *num_buffers;
unsigned size = (dev->fmt->depth * dev->width * dev->height) >> 3;
if (tot_bufs < 2)
tot_bufs = 2;
tot_bufs = tw68_buffer_count(size, tot_bufs);
- *num_buffers = tot_bufs - q->num_buffers;
+ *num_buffers = tot_bufs - vb2_get_num_buffers(q);
/*
* We allow create_bufs, but only if the sizeimage is >= as the
* current sizeimage. The tw68_buffer_count calculation becomes quite
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 25/56] media: pci: tw68: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Fabrizio Castro
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
---
drivers/media/pci/tw68/tw68-video.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/media/pci/tw68/tw68-video.c b/drivers/media/pci/tw68/tw68-video.c
index 773a18702d36..35296c226019 100644
--- a/drivers/media/pci/tw68/tw68-video.c
+++ b/drivers/media/pci/tw68/tw68-video.c
@@ -360,13 +360,13 @@ static int tw68_queue_setup(struct vb2_queue *q,
unsigned int sizes[], struct device *alloc_devs[])
{
struct tw68_dev *dev = vb2_get_drv_priv(q);
- unsigned tot_bufs = q->num_buffers + *num_buffers;
+ unsigned tot_bufs = vb2_get_num_buffers(q) + *num_buffers;
unsigned size = (dev->fmt->depth * dev->width * dev->height) >> 3;
if (tot_bufs < 2)
tot_bufs = 2;
tot_bufs = tw68_buffer_count(size, tot_bufs);
- *num_buffers = tot_bufs - q->num_buffers;
+ *num_buffers = tot_bufs - vb2_get_num_buffers(q);
/*
* We allow create_bufs, but only if the sizeimage is >= as the
* current sizeimage. The tw68_buffer_count calculation becomes quite
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 25/56] media: pci: tw68: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Fabrizio Castro
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
---
drivers/media/pci/tw68/tw68-video.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/media/pci/tw68/tw68-video.c b/drivers/media/pci/tw68/tw68-video.c
index 773a18702d36..35296c226019 100644
--- a/drivers/media/pci/tw68/tw68-video.c
+++ b/drivers/media/pci/tw68/tw68-video.c
@@ -360,13 +360,13 @@ static int tw68_queue_setup(struct vb2_queue *q,
unsigned int sizes[], struct device *alloc_devs[])
{
struct tw68_dev *dev = vb2_get_drv_priv(q);
- unsigned tot_bufs = q->num_buffers + *num_buffers;
+ unsigned tot_bufs = vb2_get_num_buffers(q) + *num_buffers;
unsigned size = (dev->fmt->depth * dev->width * dev->height) >> 3;
if (tot_bufs < 2)
tot_bufs = 2;
tot_bufs = tw68_buffer_count(size, tot_bufs);
- *num_buffers = tot_bufs - q->num_buffers;
+ *num_buffers = tot_bufs - vb2_get_num_buffers(q);
/*
* We allow create_bufs, but only if the sizeimage is >= as the
* current sizeimage. The tw68_buffer_count calculation becomes quite
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 26/56] media: i2c: video-i2c: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Matt Ranostay
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Matt Ranostay <matt.ranostay@konsulko.com>
---
drivers/media/i2c/video-i2c.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/i2c/video-i2c.c b/drivers/media/i2c/video-i2c.c
index 178bd06cc2ed..ebf2ac98a068 100644
--- a/drivers/media/i2c/video-i2c.c
+++ b/drivers/media/i2c/video-i2c.c
@@ -405,9 +405,10 @@ static int queue_setup(struct vb2_queue *vq,
{
struct video_i2c_data *data = vb2_get_drv_priv(vq);
unsigned int size = data->chip->buffer_size;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2;
+ if (q_num_bufs + *nbuffers < 2)
+ *nbuffers = 2 - q_num_bufs;
if (*nplanes)
return sizes[0] < size ? -EINVAL : 0;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 26/56] media: i2c: video-i2c: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Matt Ranostay
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Matt Ranostay <matt.ranostay@konsulko.com>
---
drivers/media/i2c/video-i2c.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/i2c/video-i2c.c b/drivers/media/i2c/video-i2c.c
index 178bd06cc2ed..ebf2ac98a068 100644
--- a/drivers/media/i2c/video-i2c.c
+++ b/drivers/media/i2c/video-i2c.c
@@ -405,9 +405,10 @@ static int queue_setup(struct vb2_queue *vq,
{
struct video_i2c_data *data = vb2_get_drv_priv(vq);
unsigned int size = data->chip->buffer_size;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2;
+ if (q_num_bufs + *nbuffers < 2)
+ *nbuffers = 2 - q_num_bufs;
if (*nplanes)
return sizes[0] < size ? -EINVAL : 0;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 26/56] media: i2c: video-i2c: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Matt Ranostay
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Matt Ranostay <matt.ranostay@konsulko.com>
---
drivers/media/i2c/video-i2c.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/i2c/video-i2c.c b/drivers/media/i2c/video-i2c.c
index 178bd06cc2ed..ebf2ac98a068 100644
--- a/drivers/media/i2c/video-i2c.c
+++ b/drivers/media/i2c/video-i2c.c
@@ -405,9 +405,10 @@ static int queue_setup(struct vb2_queue *vq,
{
struct video_i2c_data *data = vb2_get_drv_priv(vq);
unsigned int size = data->chip->buffer_size;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2;
+ if (q_num_bufs + *nbuffers < 2)
+ *nbuffers = 2 - q_num_bufs;
if (*nplanes)
return sizes[0] < size ? -EINVAL : 0;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 27/56] media: coda: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
drivers/media/platform/chips-media/coda-common.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/chips-media/coda-common.c b/drivers/media/platform/chips-media/coda-common.c
index cc4892129aaf..f1d85758f6dd 100644
--- a/drivers/media/platform/chips-media/coda-common.c
+++ b/drivers/media/platform/chips-media/coda-common.c
@@ -794,7 +794,7 @@ static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f,
if (vb2_is_busy(vq)) {
v4l2_err(&ctx->dev->v4l2_dev, "%s: %s queue busy: %d\n",
- __func__, v4l2_type_names[f->type], vq->num_buffers);
+ __func__, v4l2_type_names[f->type], vb2_get_num_buffers(vq));
return -EBUSY;
}
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 27/56] media: coda: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
drivers/media/platform/chips-media/coda-common.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/chips-media/coda-common.c b/drivers/media/platform/chips-media/coda-common.c
index cc4892129aaf..f1d85758f6dd 100644
--- a/drivers/media/platform/chips-media/coda-common.c
+++ b/drivers/media/platform/chips-media/coda-common.c
@@ -794,7 +794,7 @@ static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f,
if (vb2_is_busy(vq)) {
v4l2_err(&ctx->dev->v4l2_dev, "%s: %s queue busy: %d\n",
- __func__, v4l2_type_names[f->type], vq->num_buffers);
+ __func__, v4l2_type_names[f->type], vb2_get_num_buffers(vq));
return -EBUSY;
}
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 27/56] media: coda: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
drivers/media/platform/chips-media/coda-common.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/chips-media/coda-common.c b/drivers/media/platform/chips-media/coda-common.c
index cc4892129aaf..f1d85758f6dd 100644
--- a/drivers/media/platform/chips-media/coda-common.c
+++ b/drivers/media/platform/chips-media/coda-common.c
@@ -794,7 +794,7 @@ static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f,
if (vb2_is_busy(vq)) {
v4l2_err(&ctx->dev->v4l2_dev, "%s: %s queue busy: %d\n",
- __func__, v4l2_type_names[f->type], vq->num_buffers);
+ __func__, v4l2_type_names[f->type], vb2_get_num_buffers(vq));
return -EBUSY;
}
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 28/56] media: nxp: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Rui Miguel Silva, Laurent Pinchart,
Martin Kepplinger
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Rui Miguel Silva <rmfrfs@gmail.com>
CC: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
CC: Martin Kepplinger <martink@posteo.de>
---
drivers/media/platform/nxp/imx7-media-csi.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/media/platform/nxp/imx7-media-csi.c b/drivers/media/platform/nxp/imx7-media-csi.c
index 15049c6aab37..4c467fb82789 100644
--- a/drivers/media/platform/nxp/imx7-media-csi.c
+++ b/drivers/media/platform/nxp/imx7-media-csi.c
@@ -1245,6 +1245,7 @@ static int imx7_csi_video_queue_setup(struct vb2_queue *vq,
struct device *alloc_devs[])
{
struct imx7_csi *csi = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
struct v4l2_pix_format *pix = &csi->vdev_fmt;
unsigned int count = *nbuffers;
@@ -1254,14 +1255,14 @@ static int imx7_csi_video_queue_setup(struct vb2_queue *vq,
if (*nplanes) {
if (*nplanes != 1 || sizes[0] < pix->sizeimage)
return -EINVAL;
- count += vq->num_buffers;
+ count += q_num_bufs;
}
count = min_t(__u32, IMX7_CSI_VIDEO_MEM_LIMIT / pix->sizeimage, count);
if (*nplanes)
- *nbuffers = (count < vq->num_buffers) ? 0 :
- count - vq->num_buffers;
+ *nbuffers = (count < q_num_bufs) ? 0 :
+ count - q_num_bufs;
else
*nbuffers = count;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 28/56] media: nxp: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Rui Miguel Silva, Laurent Pinchart,
Martin Kepplinger
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Rui Miguel Silva <rmfrfs@gmail.com>
CC: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
CC: Martin Kepplinger <martink@posteo.de>
---
drivers/media/platform/nxp/imx7-media-csi.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/media/platform/nxp/imx7-media-csi.c b/drivers/media/platform/nxp/imx7-media-csi.c
index 15049c6aab37..4c467fb82789 100644
--- a/drivers/media/platform/nxp/imx7-media-csi.c
+++ b/drivers/media/platform/nxp/imx7-media-csi.c
@@ -1245,6 +1245,7 @@ static int imx7_csi_video_queue_setup(struct vb2_queue *vq,
struct device *alloc_devs[])
{
struct imx7_csi *csi = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
struct v4l2_pix_format *pix = &csi->vdev_fmt;
unsigned int count = *nbuffers;
@@ -1254,14 +1255,14 @@ static int imx7_csi_video_queue_setup(struct vb2_queue *vq,
if (*nplanes) {
if (*nplanes != 1 || sizes[0] < pix->sizeimage)
return -EINVAL;
- count += vq->num_buffers;
+ count += q_num_bufs;
}
count = min_t(__u32, IMX7_CSI_VIDEO_MEM_LIMIT / pix->sizeimage, count);
if (*nplanes)
- *nbuffers = (count < vq->num_buffers) ? 0 :
- count - vq->num_buffers;
+ *nbuffers = (count < q_num_bufs) ? 0 :
+ count - q_num_bufs;
else
*nbuffers = count;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 28/56] media: nxp: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Rui Miguel Silva, Laurent Pinchart,
Martin Kepplinger
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Rui Miguel Silva <rmfrfs@gmail.com>
CC: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
CC: Martin Kepplinger <martink@posteo.de>
---
drivers/media/platform/nxp/imx7-media-csi.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/media/platform/nxp/imx7-media-csi.c b/drivers/media/platform/nxp/imx7-media-csi.c
index 15049c6aab37..4c467fb82789 100644
--- a/drivers/media/platform/nxp/imx7-media-csi.c
+++ b/drivers/media/platform/nxp/imx7-media-csi.c
@@ -1245,6 +1245,7 @@ static int imx7_csi_video_queue_setup(struct vb2_queue *vq,
struct device *alloc_devs[])
{
struct imx7_csi *csi = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
struct v4l2_pix_format *pix = &csi->vdev_fmt;
unsigned int count = *nbuffers;
@@ -1254,14 +1255,14 @@ static int imx7_csi_video_queue_setup(struct vb2_queue *vq,
if (*nplanes) {
if (*nplanes != 1 || sizes[0] < pix->sizeimage)
return -EINVAL;
- count += vq->num_buffers;
+ count += q_num_bufs;
}
count = min_t(__u32, IMX7_CSI_VIDEO_MEM_LIMIT / pix->sizeimage, count);
if (*nplanes)
- *nbuffers = (count < vq->num_buffers) ? 0 :
- count - vq->num_buffers;
+ *nbuffers = (count < q_num_bufs) ? 0 :
+ count - q_num_bufs;
else
*nbuffers = count;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 29/56] media: verisilicon: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
---
drivers/media/platform/verisilicon/hantro_postproc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/verisilicon/hantro_postproc.c b/drivers/media/platform/verisilicon/hantro_postproc.c
index 64d6fb852ae9..8f8f17e671ce 100644
--- a/drivers/media/platform/verisilicon/hantro_postproc.c
+++ b/drivers/media/platform/verisilicon/hantro_postproc.c
@@ -195,7 +195,7 @@ int hantro_postproc_alloc(struct hantro_ctx *ctx)
struct hantro_dev *vpu = ctx->dev;
struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
- unsigned int num_buffers = cap_queue->num_buffers;
+ unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
struct v4l2_pix_format_mplane pix_mp;
const struct hantro_fmt *fmt;
unsigned int i, buf_size;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 29/56] media: verisilicon: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
---
drivers/media/platform/verisilicon/hantro_postproc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/verisilicon/hantro_postproc.c b/drivers/media/platform/verisilicon/hantro_postproc.c
index 64d6fb852ae9..8f8f17e671ce 100644
--- a/drivers/media/platform/verisilicon/hantro_postproc.c
+++ b/drivers/media/platform/verisilicon/hantro_postproc.c
@@ -195,7 +195,7 @@ int hantro_postproc_alloc(struct hantro_ctx *ctx)
struct hantro_dev *vpu = ctx->dev;
struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
- unsigned int num_buffers = cap_queue->num_buffers;
+ unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
struct v4l2_pix_format_mplane pix_mp;
const struct hantro_fmt *fmt;
unsigned int i, buf_size;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 29/56] media: verisilicon: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
---
drivers/media/platform/verisilicon/hantro_postproc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/verisilicon/hantro_postproc.c b/drivers/media/platform/verisilicon/hantro_postproc.c
index 64d6fb852ae9..8f8f17e671ce 100644
--- a/drivers/media/platform/verisilicon/hantro_postproc.c
+++ b/drivers/media/platform/verisilicon/hantro_postproc.c
@@ -195,7 +195,7 @@ int hantro_postproc_alloc(struct hantro_ctx *ctx)
struct hantro_dev *vpu = ctx->dev;
struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
- unsigned int num_buffers = cap_queue->num_buffers;
+ unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
struct v4l2_pix_format_mplane pix_mp;
const struct hantro_fmt *fmt;
unsigned int i, buf_size;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 30/56] media: test-drivers: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Daniel Almeida
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
If 'min_buffers_needed' is set remove useless checks in queue setup
functions.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Daniel Almeida <daniel.almeida@collabora.com>
---
drivers/media/test-drivers/visl/visl-dec.c | 4 ++--
drivers/media/test-drivers/vivid/vivid-meta-cap.c | 3 ---
drivers/media/test-drivers/vivid/vivid-meta-out.c | 5 +++--
drivers/media/test-drivers/vivid/vivid-touch-cap.c | 5 +++--
drivers/media/test-drivers/vivid/vivid-vbi-cap.c | 3 ---
drivers/media/test-drivers/vivid/vivid-vbi-out.c | 3 ---
drivers/media/test-drivers/vivid/vivid-vid-cap.c | 3 ---
drivers/media/test-drivers/vivid/vivid-vid-out.c | 5 +----
8 files changed, 9 insertions(+), 22 deletions(-)
diff --git a/drivers/media/test-drivers/visl/visl-dec.c b/drivers/media/test-drivers/visl/visl-dec.c
index ba20ea998d19..4672dc5e52bb 100644
--- a/drivers/media/test-drivers/visl/visl-dec.c
+++ b/drivers/media/test-drivers/visl/visl-dec.c
@@ -287,7 +287,7 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
frame_dprintk(ctx->dev, run->dst->sequence, "%s\n", buf);
len = 0;
- for (i = 0; i < out_q->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(out_q); i++) {
char entry[] = "index: %u, state: %s, request_fd: %d, ";
u32 old_len = len;
struct vb2_buffer *vb2;
@@ -347,7 +347,7 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
frame_dprintk(ctx->dev, run->dst->sequence, "%s\n", buf);
len = 0;
- for (i = 0; i < cap_q->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(cap_q); i++) {
u32 old_len = len;
struct vb2_buffer *vb2;
char *q_status;
diff --git a/drivers/media/test-drivers/vivid/vivid-meta-cap.c b/drivers/media/test-drivers/vivid/vivid-meta-cap.c
index 780f96860a6d..0a718d037e59 100644
--- a/drivers/media/test-drivers/vivid/vivid-meta-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-meta-cap.c
@@ -30,9 +30,6 @@ static int meta_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
sizes[0] = size;
}
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
-
*nplanes = 1;
return 0;
}
diff --git a/drivers/media/test-drivers/vivid/vivid-meta-out.c b/drivers/media/test-drivers/vivid/vivid-meta-out.c
index 95835b52b58f..4a569a6e58be 100644
--- a/drivers/media/test-drivers/vivid/vivid-meta-out.c
+++ b/drivers/media/test-drivers/vivid/vivid-meta-out.c
@@ -18,6 +18,7 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
struct device *alloc_devs[])
{
struct vivid_dev *dev = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
unsigned int size = sizeof(struct vivid_meta_out_buf);
if (!vivid_is_webcam(dev))
@@ -30,8 +31,8 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
sizes[0] = size;
}
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 2)
+ *nbuffers = 2 - q_num_bufs;
*nplanes = 1;
return 0;
diff --git a/drivers/media/test-drivers/vivid/vivid-touch-cap.c b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
index c7f6e23df51e..4b3c6ea0afde 100644
--- a/drivers/media/test-drivers/vivid/vivid-touch-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
@@ -13,6 +13,7 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
struct device *alloc_devs[])
{
struct vivid_dev *dev = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
struct v4l2_pix_format *f = &dev->tch_format;
unsigned int size = f->sizeimage;
@@ -23,8 +24,8 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
sizes[0] = size;
}
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 2)
+ *nbuffers = 2 - q_num_bufs;
*nplanes = 1;
return 0;
diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-cap.c b/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
index b65b02eeeb97..3840b3a664ac 100644
--- a/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
@@ -134,9 +134,6 @@ static int vbi_cap_queue_setup(struct vb2_queue *vq,
sizes[0] = size;
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
-
*nplanes = 1;
return 0;
}
diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-out.c b/drivers/media/test-drivers/vivid/vivid-vbi-out.c
index cd56476902a2..434a10676417 100644
--- a/drivers/media/test-drivers/vivid/vivid-vbi-out.c
+++ b/drivers/media/test-drivers/vivid/vivid-vbi-out.c
@@ -30,9 +30,6 @@ static int vbi_out_queue_setup(struct vb2_queue *vq,
sizes[0] = size;
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
-
*nplanes = 1;
return 0;
}
diff --git a/drivers/media/test-drivers/vivid/vivid-vid-cap.c b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
index 3a06df35a2d7..2804975fe278 100644
--- a/drivers/media/test-drivers/vivid/vivid-vid-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
@@ -117,9 +117,6 @@ static int vid_cap_queue_setup(struct vb2_queue *vq,
dev->fmt_cap->data_offset[p];
}
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
-
*nplanes = buffers;
dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
diff --git a/drivers/media/test-drivers/vivid/vivid-vid-out.c b/drivers/media/test-drivers/vivid/vivid-vid-out.c
index 184a6df2c29f..24c6dc896255 100644
--- a/drivers/media/test-drivers/vivid/vivid-vid-out.c
+++ b/drivers/media/test-drivers/vivid/vivid-vid-out.c
@@ -73,12 +73,9 @@ static int vid_out_queue_setup(struct vb2_queue *vq,
vfmt->data_offset[p] : size;
}
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
-
*nplanes = planes;
- dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
+ dprintk(dev, 1, "%s: count=%u\n", __func__, vb2_get_num_buffers(vq));
for (p = 0; p < planes; p++)
dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
return 0;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 30/56] media: test-drivers: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Daniel Almeida
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
If 'min_buffers_needed' is set remove useless checks in queue setup
functions.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Daniel Almeida <daniel.almeida@collabora.com>
---
drivers/media/test-drivers/visl/visl-dec.c | 4 ++--
drivers/media/test-drivers/vivid/vivid-meta-cap.c | 3 ---
drivers/media/test-drivers/vivid/vivid-meta-out.c | 5 +++--
drivers/media/test-drivers/vivid/vivid-touch-cap.c | 5 +++--
drivers/media/test-drivers/vivid/vivid-vbi-cap.c | 3 ---
drivers/media/test-drivers/vivid/vivid-vbi-out.c | 3 ---
drivers/media/test-drivers/vivid/vivid-vid-cap.c | 3 ---
drivers/media/test-drivers/vivid/vivid-vid-out.c | 5 +----
8 files changed, 9 insertions(+), 22 deletions(-)
diff --git a/drivers/media/test-drivers/visl/visl-dec.c b/drivers/media/test-drivers/visl/visl-dec.c
index ba20ea998d19..4672dc5e52bb 100644
--- a/drivers/media/test-drivers/visl/visl-dec.c
+++ b/drivers/media/test-drivers/visl/visl-dec.c
@@ -287,7 +287,7 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
frame_dprintk(ctx->dev, run->dst->sequence, "%s\n", buf);
len = 0;
- for (i = 0; i < out_q->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(out_q); i++) {
char entry[] = "index: %u, state: %s, request_fd: %d, ";
u32 old_len = len;
struct vb2_buffer *vb2;
@@ -347,7 +347,7 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
frame_dprintk(ctx->dev, run->dst->sequence, "%s\n", buf);
len = 0;
- for (i = 0; i < cap_q->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(cap_q); i++) {
u32 old_len = len;
struct vb2_buffer *vb2;
char *q_status;
diff --git a/drivers/media/test-drivers/vivid/vivid-meta-cap.c b/drivers/media/test-drivers/vivid/vivid-meta-cap.c
index 780f96860a6d..0a718d037e59 100644
--- a/drivers/media/test-drivers/vivid/vivid-meta-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-meta-cap.c
@@ -30,9 +30,6 @@ static int meta_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
sizes[0] = size;
}
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
-
*nplanes = 1;
return 0;
}
diff --git a/drivers/media/test-drivers/vivid/vivid-meta-out.c b/drivers/media/test-drivers/vivid/vivid-meta-out.c
index 95835b52b58f..4a569a6e58be 100644
--- a/drivers/media/test-drivers/vivid/vivid-meta-out.c
+++ b/drivers/media/test-drivers/vivid/vivid-meta-out.c
@@ -18,6 +18,7 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
struct device *alloc_devs[])
{
struct vivid_dev *dev = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
unsigned int size = sizeof(struct vivid_meta_out_buf);
if (!vivid_is_webcam(dev))
@@ -30,8 +31,8 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
sizes[0] = size;
}
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 2)
+ *nbuffers = 2 - q_num_bufs;
*nplanes = 1;
return 0;
diff --git a/drivers/media/test-drivers/vivid/vivid-touch-cap.c b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
index c7f6e23df51e..4b3c6ea0afde 100644
--- a/drivers/media/test-drivers/vivid/vivid-touch-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
@@ -13,6 +13,7 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
struct device *alloc_devs[])
{
struct vivid_dev *dev = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
struct v4l2_pix_format *f = &dev->tch_format;
unsigned int size = f->sizeimage;
@@ -23,8 +24,8 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
sizes[0] = size;
}
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 2)
+ *nbuffers = 2 - q_num_bufs;
*nplanes = 1;
return 0;
diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-cap.c b/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
index b65b02eeeb97..3840b3a664ac 100644
--- a/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
@@ -134,9 +134,6 @@ static int vbi_cap_queue_setup(struct vb2_queue *vq,
sizes[0] = size;
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
-
*nplanes = 1;
return 0;
}
diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-out.c b/drivers/media/test-drivers/vivid/vivid-vbi-out.c
index cd56476902a2..434a10676417 100644
--- a/drivers/media/test-drivers/vivid/vivid-vbi-out.c
+++ b/drivers/media/test-drivers/vivid/vivid-vbi-out.c
@@ -30,9 +30,6 @@ static int vbi_out_queue_setup(struct vb2_queue *vq,
sizes[0] = size;
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
-
*nplanes = 1;
return 0;
}
diff --git a/drivers/media/test-drivers/vivid/vivid-vid-cap.c b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
index 3a06df35a2d7..2804975fe278 100644
--- a/drivers/media/test-drivers/vivid/vivid-vid-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
@@ -117,9 +117,6 @@ static int vid_cap_queue_setup(struct vb2_queue *vq,
dev->fmt_cap->data_offset[p];
}
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
-
*nplanes = buffers;
dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
diff --git a/drivers/media/test-drivers/vivid/vivid-vid-out.c b/drivers/media/test-drivers/vivid/vivid-vid-out.c
index 184a6df2c29f..24c6dc896255 100644
--- a/drivers/media/test-drivers/vivid/vivid-vid-out.c
+++ b/drivers/media/test-drivers/vivid/vivid-vid-out.c
@@ -73,12 +73,9 @@ static int vid_out_queue_setup(struct vb2_queue *vq,
vfmt->data_offset[p] : size;
}
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
-
*nplanes = planes;
- dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
+ dprintk(dev, 1, "%s: count=%u\n", __func__, vb2_get_num_buffers(vq));
for (p = 0; p < planes; p++)
dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
return 0;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 30/56] media: test-drivers: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Daniel Almeida
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
If 'min_buffers_needed' is set remove useless checks in queue setup
functions.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Daniel Almeida <daniel.almeida@collabora.com>
---
drivers/media/test-drivers/visl/visl-dec.c | 4 ++--
drivers/media/test-drivers/vivid/vivid-meta-cap.c | 3 ---
drivers/media/test-drivers/vivid/vivid-meta-out.c | 5 +++--
drivers/media/test-drivers/vivid/vivid-touch-cap.c | 5 +++--
drivers/media/test-drivers/vivid/vivid-vbi-cap.c | 3 ---
drivers/media/test-drivers/vivid/vivid-vbi-out.c | 3 ---
drivers/media/test-drivers/vivid/vivid-vid-cap.c | 3 ---
drivers/media/test-drivers/vivid/vivid-vid-out.c | 5 +----
8 files changed, 9 insertions(+), 22 deletions(-)
diff --git a/drivers/media/test-drivers/visl/visl-dec.c b/drivers/media/test-drivers/visl/visl-dec.c
index ba20ea998d19..4672dc5e52bb 100644
--- a/drivers/media/test-drivers/visl/visl-dec.c
+++ b/drivers/media/test-drivers/visl/visl-dec.c
@@ -287,7 +287,7 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
frame_dprintk(ctx->dev, run->dst->sequence, "%s\n", buf);
len = 0;
- for (i = 0; i < out_q->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(out_q); i++) {
char entry[] = "index: %u, state: %s, request_fd: %d, ";
u32 old_len = len;
struct vb2_buffer *vb2;
@@ -347,7 +347,7 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
frame_dprintk(ctx->dev, run->dst->sequence, "%s\n", buf);
len = 0;
- for (i = 0; i < cap_q->num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(cap_q); i++) {
u32 old_len = len;
struct vb2_buffer *vb2;
char *q_status;
diff --git a/drivers/media/test-drivers/vivid/vivid-meta-cap.c b/drivers/media/test-drivers/vivid/vivid-meta-cap.c
index 780f96860a6d..0a718d037e59 100644
--- a/drivers/media/test-drivers/vivid/vivid-meta-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-meta-cap.c
@@ -30,9 +30,6 @@ static int meta_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
sizes[0] = size;
}
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
-
*nplanes = 1;
return 0;
}
diff --git a/drivers/media/test-drivers/vivid/vivid-meta-out.c b/drivers/media/test-drivers/vivid/vivid-meta-out.c
index 95835b52b58f..4a569a6e58be 100644
--- a/drivers/media/test-drivers/vivid/vivid-meta-out.c
+++ b/drivers/media/test-drivers/vivid/vivid-meta-out.c
@@ -18,6 +18,7 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
struct device *alloc_devs[])
{
struct vivid_dev *dev = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
unsigned int size = sizeof(struct vivid_meta_out_buf);
if (!vivid_is_webcam(dev))
@@ -30,8 +31,8 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
sizes[0] = size;
}
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 2)
+ *nbuffers = 2 - q_num_bufs;
*nplanes = 1;
return 0;
diff --git a/drivers/media/test-drivers/vivid/vivid-touch-cap.c b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
index c7f6e23df51e..4b3c6ea0afde 100644
--- a/drivers/media/test-drivers/vivid/vivid-touch-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
@@ -13,6 +13,7 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
struct device *alloc_devs[])
{
struct vivid_dev *dev = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
struct v4l2_pix_format *f = &dev->tch_format;
unsigned int size = f->sizeimage;
@@ -23,8 +24,8 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
sizes[0] = size;
}
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 2)
+ *nbuffers = 2 - q_num_bufs;
*nplanes = 1;
return 0;
diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-cap.c b/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
index b65b02eeeb97..3840b3a664ac 100644
--- a/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
@@ -134,9 +134,6 @@ static int vbi_cap_queue_setup(struct vb2_queue *vq,
sizes[0] = size;
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
-
*nplanes = 1;
return 0;
}
diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-out.c b/drivers/media/test-drivers/vivid/vivid-vbi-out.c
index cd56476902a2..434a10676417 100644
--- a/drivers/media/test-drivers/vivid/vivid-vbi-out.c
+++ b/drivers/media/test-drivers/vivid/vivid-vbi-out.c
@@ -30,9 +30,6 @@ static int vbi_out_queue_setup(struct vb2_queue *vq,
sizes[0] = size;
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
-
*nplanes = 1;
return 0;
}
diff --git a/drivers/media/test-drivers/vivid/vivid-vid-cap.c b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
index 3a06df35a2d7..2804975fe278 100644
--- a/drivers/media/test-drivers/vivid/vivid-vid-cap.c
+++ b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
@@ -117,9 +117,6 @@ static int vid_cap_queue_setup(struct vb2_queue *vq,
dev->fmt_cap->data_offset[p];
}
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
-
*nplanes = buffers;
dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
diff --git a/drivers/media/test-drivers/vivid/vivid-vid-out.c b/drivers/media/test-drivers/vivid/vivid-vid-out.c
index 184a6df2c29f..24c6dc896255 100644
--- a/drivers/media/test-drivers/vivid/vivid-vid-out.c
+++ b/drivers/media/test-drivers/vivid/vivid-vid-out.c
@@ -73,12 +73,9 @@ static int vid_out_queue_setup(struct vb2_queue *vq,
vfmt->data_offset[p] : size;
}
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
-
*nplanes = planes;
- dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
+ dprintk(dev, 1, "%s: count=%u\n", __func__, vb2_get_num_buffers(vq));
for (p = 0; p < planes; p++)
dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
return 0;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 31/56] media: imx: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Steve Longerbeam
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Steve Longerbeam <slongerbeam@gmail.com>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
drivers/staging/media/imx/imx-media-capture.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/media/imx/imx-media-capture.c b/drivers/staging/media/imx/imx-media-capture.c
index 4846078315ff..ce02199e7b1b 100644
--- a/drivers/staging/media/imx/imx-media-capture.c
+++ b/drivers/staging/media/imx/imx-media-capture.c
@@ -605,6 +605,7 @@ static int capture_queue_setup(struct vb2_queue *vq,
{
struct capture_priv *priv = vb2_get_drv_priv(vq);
struct v4l2_pix_format *pix = &priv->vdev.fmt;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
unsigned int count = *nbuffers;
if (vq->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
@@ -613,14 +614,14 @@ static int capture_queue_setup(struct vb2_queue *vq,
if (*nplanes) {
if (*nplanes != 1 || sizes[0] < pix->sizeimage)
return -EINVAL;
- count += vq->num_buffers;
+ count += q_num_bufs;
}
count = min_t(__u32, VID_MEM_LIMIT / pix->sizeimage, count);
if (*nplanes)
- *nbuffers = (count < vq->num_buffers) ? 0 :
- count - vq->num_buffers;
+ *nbuffers = (count < q_num_bufs) ? 0 :
+ count - q_num_bufs;
else
*nbuffers = count;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 31/56] media: imx: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Steve Longerbeam
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Steve Longerbeam <slongerbeam@gmail.com>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
drivers/staging/media/imx/imx-media-capture.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/media/imx/imx-media-capture.c b/drivers/staging/media/imx/imx-media-capture.c
index 4846078315ff..ce02199e7b1b 100644
--- a/drivers/staging/media/imx/imx-media-capture.c
+++ b/drivers/staging/media/imx/imx-media-capture.c
@@ -605,6 +605,7 @@ static int capture_queue_setup(struct vb2_queue *vq,
{
struct capture_priv *priv = vb2_get_drv_priv(vq);
struct v4l2_pix_format *pix = &priv->vdev.fmt;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
unsigned int count = *nbuffers;
if (vq->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
@@ -613,14 +614,14 @@ static int capture_queue_setup(struct vb2_queue *vq,
if (*nplanes) {
if (*nplanes != 1 || sizes[0] < pix->sizeimage)
return -EINVAL;
- count += vq->num_buffers;
+ count += q_num_bufs;
}
count = min_t(__u32, VID_MEM_LIMIT / pix->sizeimage, count);
if (*nplanes)
- *nbuffers = (count < vq->num_buffers) ? 0 :
- count - vq->num_buffers;
+ *nbuffers = (count < q_num_bufs) ? 0 :
+ count - q_num_bufs;
else
*nbuffers = count;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 31/56] media: imx: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Steve Longerbeam
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Steve Longerbeam <slongerbeam@gmail.com>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
drivers/staging/media/imx/imx-media-capture.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/media/imx/imx-media-capture.c b/drivers/staging/media/imx/imx-media-capture.c
index 4846078315ff..ce02199e7b1b 100644
--- a/drivers/staging/media/imx/imx-media-capture.c
+++ b/drivers/staging/media/imx/imx-media-capture.c
@@ -605,6 +605,7 @@ static int capture_queue_setup(struct vb2_queue *vq,
{
struct capture_priv *priv = vb2_get_drv_priv(vq);
struct v4l2_pix_format *pix = &priv->vdev.fmt;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
unsigned int count = *nbuffers;
if (vq->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
@@ -613,14 +614,14 @@ static int capture_queue_setup(struct vb2_queue *vq,
if (*nplanes) {
if (*nplanes != 1 || sizes[0] < pix->sizeimage)
return -EINVAL;
- count += vq->num_buffers;
+ count += q_num_bufs;
}
count = min_t(__u32, VID_MEM_LIMIT / pix->sizeimage, count);
if (*nplanes)
- *nbuffers = (count < vq->num_buffers) ? 0 :
- count - vq->num_buffers;
+ *nbuffers = (count < q_num_bufs) ? 0 :
+ count - q_num_bufs;
else
*nbuffers = count;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 32/56] media: meson: vdec: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Neil Armstrong
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Neil Armstrong <neil.armstrong@linaro.org>
---
drivers/staging/media/meson/vdec/vdec.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/media/meson/vdec/vdec.c b/drivers/staging/media/meson/vdec/vdec.c
index 219185aaa588..1e2369f104c8 100644
--- a/drivers/staging/media/meson/vdec/vdec.c
+++ b/drivers/staging/media/meson/vdec/vdec.c
@@ -167,22 +167,23 @@ static void process_num_buffers(struct vb2_queue *q,
bool is_reqbufs)
{
const struct amvdec_format *fmt_out = sess->fmt_out;
- unsigned int buffers_total = q->num_buffers + *num_buffers;
+ unsigned int q_num_bufs = vb2_get_num_buffers(q);
+ unsigned int buffers_total = q_num_bufs + *num_buffers;
u32 min_buf_capture = v4l2_ctrl_g_ctrl(sess->ctrl_min_buf_capture);
- if (q->num_buffers + *num_buffers < min_buf_capture)
- *num_buffers = min_buf_capture - q->num_buffers;
+ if (q_num_bufs + *num_buffers < min_buf_capture)
+ *num_buffers = min_buf_capture - q_num_bufs;
if (is_reqbufs && buffers_total < fmt_out->min_buffers)
- *num_buffers = fmt_out->min_buffers - q->num_buffers;
+ *num_buffers = fmt_out->min_buffers - q_num_bufs;
if (buffers_total > fmt_out->max_buffers)
- *num_buffers = fmt_out->max_buffers - q->num_buffers;
+ *num_buffers = fmt_out->max_buffers - q_num_bufs;
/* We need to program the complete CAPTURE buffer list
* in registers during start_streaming, and the firmwares
* are free to choose any of them to write frames to. As such,
* we need all of them to be queued into the driver
*/
- sess->num_dst_bufs = q->num_buffers + *num_buffers;
+ sess->num_dst_bufs = q_num_bufs + *num_buffers;
q->min_buffers_needed = max(fmt_out->min_buffers, sess->num_dst_bufs);
}
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 32/56] media: meson: vdec: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Neil Armstrong
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Neil Armstrong <neil.armstrong@linaro.org>
---
drivers/staging/media/meson/vdec/vdec.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/media/meson/vdec/vdec.c b/drivers/staging/media/meson/vdec/vdec.c
index 219185aaa588..1e2369f104c8 100644
--- a/drivers/staging/media/meson/vdec/vdec.c
+++ b/drivers/staging/media/meson/vdec/vdec.c
@@ -167,22 +167,23 @@ static void process_num_buffers(struct vb2_queue *q,
bool is_reqbufs)
{
const struct amvdec_format *fmt_out = sess->fmt_out;
- unsigned int buffers_total = q->num_buffers + *num_buffers;
+ unsigned int q_num_bufs = vb2_get_num_buffers(q);
+ unsigned int buffers_total = q_num_bufs + *num_buffers;
u32 min_buf_capture = v4l2_ctrl_g_ctrl(sess->ctrl_min_buf_capture);
- if (q->num_buffers + *num_buffers < min_buf_capture)
- *num_buffers = min_buf_capture - q->num_buffers;
+ if (q_num_bufs + *num_buffers < min_buf_capture)
+ *num_buffers = min_buf_capture - q_num_bufs;
if (is_reqbufs && buffers_total < fmt_out->min_buffers)
- *num_buffers = fmt_out->min_buffers - q->num_buffers;
+ *num_buffers = fmt_out->min_buffers - q_num_bufs;
if (buffers_total > fmt_out->max_buffers)
- *num_buffers = fmt_out->max_buffers - q->num_buffers;
+ *num_buffers = fmt_out->max_buffers - q_num_bufs;
/* We need to program the complete CAPTURE buffer list
* in registers during start_streaming, and the firmwares
* are free to choose any of them to write frames to. As such,
* we need all of them to be queued into the driver
*/
- sess->num_dst_bufs = q->num_buffers + *num_buffers;
+ sess->num_dst_bufs = q_num_bufs + *num_buffers;
q->min_buffers_needed = max(fmt_out->min_buffers, sess->num_dst_bufs);
}
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 32/56] media: meson: vdec: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Neil Armstrong
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Neil Armstrong <neil.armstrong@linaro.org>
---
drivers/staging/media/meson/vdec/vdec.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/media/meson/vdec/vdec.c b/drivers/staging/media/meson/vdec/vdec.c
index 219185aaa588..1e2369f104c8 100644
--- a/drivers/staging/media/meson/vdec/vdec.c
+++ b/drivers/staging/media/meson/vdec/vdec.c
@@ -167,22 +167,23 @@ static void process_num_buffers(struct vb2_queue *q,
bool is_reqbufs)
{
const struct amvdec_format *fmt_out = sess->fmt_out;
- unsigned int buffers_total = q->num_buffers + *num_buffers;
+ unsigned int q_num_bufs = vb2_get_num_buffers(q);
+ unsigned int buffers_total = q_num_bufs + *num_buffers;
u32 min_buf_capture = v4l2_ctrl_g_ctrl(sess->ctrl_min_buf_capture);
- if (q->num_buffers + *num_buffers < min_buf_capture)
- *num_buffers = min_buf_capture - q->num_buffers;
+ if (q_num_bufs + *num_buffers < min_buf_capture)
+ *num_buffers = min_buf_capture - q_num_bufs;
if (is_reqbufs && buffers_total < fmt_out->min_buffers)
- *num_buffers = fmt_out->min_buffers - q->num_buffers;
+ *num_buffers = fmt_out->min_buffers - q_num_bufs;
if (buffers_total > fmt_out->max_buffers)
- *num_buffers = fmt_out->max_buffers - q->num_buffers;
+ *num_buffers = fmt_out->max_buffers - q_num_bufs;
/* We need to program the complete CAPTURE buffer list
* in registers during start_streaming, and the firmwares
* are free to choose any of them to write frames to. As such,
* we need all of them to be queued into the driver
*/
- sess->num_dst_bufs = q->num_buffers + *num_buffers;
+ sess->num_dst_bufs = q_num_bufs + *num_buffers;
q->min_buffers_needed = max(fmt_out->min_buffers, sess->num_dst_bufs);
}
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 33/56] touchscreen: sur40: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Dmitry Torokhov
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/input/touchscreen/sur40.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c
index 8ddb3f7d307a..e7d2a52169a0 100644
--- a/drivers/input/touchscreen/sur40.c
+++ b/drivers/input/touchscreen/sur40.c
@@ -847,9 +847,10 @@ static int sur40_queue_setup(struct vb2_queue *q,
unsigned int sizes[], struct device *alloc_devs[])
{
struct sur40_state *sur40 = vb2_get_drv_priv(q);
+ unsigned int q_num_bufs = vb2_get_num_buffers(q);
- if (q->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - q->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes)
return sizes[0] < sur40->pix_fmt.sizeimage ? -EINVAL : 0;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 33/56] touchscreen: sur40: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Dmitry Torokhov
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/input/touchscreen/sur40.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c
index 8ddb3f7d307a..e7d2a52169a0 100644
--- a/drivers/input/touchscreen/sur40.c
+++ b/drivers/input/touchscreen/sur40.c
@@ -847,9 +847,10 @@ static int sur40_queue_setup(struct vb2_queue *q,
unsigned int sizes[], struct device *alloc_devs[])
{
struct sur40_state *sur40 = vb2_get_drv_priv(q);
+ unsigned int q_num_bufs = vb2_get_num_buffers(q);
- if (q->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - q->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes)
return sizes[0] < sur40->pix_fmt.sizeimage ? -EINVAL : 0;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 33/56] touchscreen: sur40: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Dmitry Torokhov
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/input/touchscreen/sur40.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c
index 8ddb3f7d307a..e7d2a52169a0 100644
--- a/drivers/input/touchscreen/sur40.c
+++ b/drivers/input/touchscreen/sur40.c
@@ -847,9 +847,10 @@ static int sur40_queue_setup(struct vb2_queue *q,
unsigned int sizes[], struct device *alloc_devs[])
{
struct sur40_state *sur40 = vb2_get_drv_priv(q);
+ unsigned int q_num_bufs = vb2_get_num_buffers(q);
- if (q->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - q->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes)
return sizes[0] < sur40->pix_fmt.sizeimage ? -EINVAL : 0;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 34/56] sample: v4l: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
samples/v4l/v4l2-pci-skeleton.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/samples/v4l/v4l2-pci-skeleton.c b/samples/v4l/v4l2-pci-skeleton.c
index a61f94db18d9..a65aa9d1e9da 100644
--- a/samples/v4l/v4l2-pci-skeleton.c
+++ b/samples/v4l/v4l2-pci-skeleton.c
@@ -155,6 +155,7 @@ static int queue_setup(struct vb2_queue *vq,
unsigned int sizes[], struct device *alloc_devs[])
{
struct skeleton *skel = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
skel->field = skel->format.field;
if (skel->field == V4L2_FIELD_ALTERNATE) {
@@ -167,8 +168,8 @@ static int queue_setup(struct vb2_queue *vq,
skel->field = V4L2_FIELD_TOP;
}
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes)
return sizes[0] < skel->format.sizeimage ? -EINVAL : 0;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 34/56] sample: v4l: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
samples/v4l/v4l2-pci-skeleton.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/samples/v4l/v4l2-pci-skeleton.c b/samples/v4l/v4l2-pci-skeleton.c
index a61f94db18d9..a65aa9d1e9da 100644
--- a/samples/v4l/v4l2-pci-skeleton.c
+++ b/samples/v4l/v4l2-pci-skeleton.c
@@ -155,6 +155,7 @@ static int queue_setup(struct vb2_queue *vq,
unsigned int sizes[], struct device *alloc_devs[])
{
struct skeleton *skel = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
skel->field = skel->format.field;
if (skel->field == V4L2_FIELD_ALTERNATE) {
@@ -167,8 +168,8 @@ static int queue_setup(struct vb2_queue *vq,
skel->field = V4L2_FIELD_TOP;
}
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes)
return sizes[0] < skel->format.sizeimage ? -EINVAL : 0;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 34/56] sample: v4l: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
samples/v4l/v4l2-pci-skeleton.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/samples/v4l/v4l2-pci-skeleton.c b/samples/v4l/v4l2-pci-skeleton.c
index a61f94db18d9..a65aa9d1e9da 100644
--- a/samples/v4l/v4l2-pci-skeleton.c
+++ b/samples/v4l/v4l2-pci-skeleton.c
@@ -155,6 +155,7 @@ static int queue_setup(struct vb2_queue *vq,
unsigned int sizes[], struct device *alloc_devs[])
{
struct skeleton *skel = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
skel->field = skel->format.field;
if (skel->field == V4L2_FIELD_ALTERNATE) {
@@ -167,8 +168,8 @@ static int queue_setup(struct vb2_queue *vq,
skel->field = V4L2_FIELD_TOP;
}
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes)
return sizes[0] < skel->format.sizeimage ? -EINVAL : 0;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Paul Kocialkowski, Maxime Ripard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
CC: Maxime Ripard <mripard@kernel.org>
---
drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
2 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
index dfb401df138a..3e2843ef6cce 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
@@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct cedrus_ctx *ctx)
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
- for (i = 0; i < vq->num_buffers; i++) {
- buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
+ for (i = 0; i < vb2_get_num_buffers(vq); i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(vq, i);
+
+ if (!vb)
+ continue;
+
+ buf = vb2_to_cedrus_buffer(vb);
if (buf->codec.h264.mv_col_buf_size > 0) {
dma_free_attrs(dev->dev,
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
index fc9297232456..52e94c8f2f01 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
@@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct cedrus_ctx *ctx)
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
- for (i = 0; i < vq->num_buffers; i++) {
- buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
+ for (i = 0; i < vb2_get_num_buffers(vq); i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(vq, i);
+
+ if (!vb)
+ continue;
+
+ buf = vb2_to_cedrus_buffer(vb);
if (buf->codec.h265.mv_col_buf_size > 0) {
dma_free_attrs(dev->dev,
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Paul Kocialkowski, Maxime Ripard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
CC: Maxime Ripard <mripard@kernel.org>
---
drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
2 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
index dfb401df138a..3e2843ef6cce 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
@@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct cedrus_ctx *ctx)
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
- for (i = 0; i < vq->num_buffers; i++) {
- buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
+ for (i = 0; i < vb2_get_num_buffers(vq); i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(vq, i);
+
+ if (!vb)
+ continue;
+
+ buf = vb2_to_cedrus_buffer(vb);
if (buf->codec.h264.mv_col_buf_size > 0) {
dma_free_attrs(dev->dev,
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
index fc9297232456..52e94c8f2f01 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
@@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct cedrus_ctx *ctx)
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
- for (i = 0; i < vq->num_buffers; i++) {
- buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
+ for (i = 0; i < vb2_get_num_buffers(vq); i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(vq, i);
+
+ if (!vb)
+ continue;
+
+ buf = vb2_to_cedrus_buffer(vb);
if (buf->codec.h265.mv_col_buf_size > 0) {
dma_free_attrs(dev->dev,
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Paul Kocialkowski, Maxime Ripard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
CC: Maxime Ripard <mripard@kernel.org>
---
drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
2 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
index dfb401df138a..3e2843ef6cce 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
@@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct cedrus_ctx *ctx)
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
- for (i = 0; i < vq->num_buffers; i++) {
- buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
+ for (i = 0; i < vb2_get_num_buffers(vq); i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(vq, i);
+
+ if (!vb)
+ continue;
+
+ buf = vb2_to_cedrus_buffer(vb);
if (buf->codec.h264.mv_col_buf_size > 0) {
dma_free_attrs(dev->dev,
diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
index fc9297232456..52e94c8f2f01 100644
--- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
+++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
@@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct cedrus_ctx *ctx)
vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
- for (i = 0; i < vq->num_buffers; i++) {
- buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
+ for (i = 0; i < vb2_get_num_buffers(vq); i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(vq, i);
+
+ if (!vb)
+ continue;
+
+ buf = vb2_to_cedrus_buffer(vb);
if (buf->codec.h265.mv_col_buf_size > 0) {
dma_free_attrs(dev->dev,
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 36/56] media: nuvoton: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Joseph Liu, Marvin Lin
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Joseph Liu <kwliu@nuvoton.com>
CC: Marvin Lin <kflin@nuvoton.com>
---
drivers/media/platform/nuvoton/npcm-video.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/nuvoton/npcm-video.c b/drivers/media/platform/nuvoton/npcm-video.c
index b9e6782f59b4..f9b4e36a5175 100644
--- a/drivers/media/platform/nuvoton/npcm-video.c
+++ b/drivers/media/platform/nuvoton/npcm-video.c
@@ -393,7 +393,7 @@ static void npcm_video_free_diff_table(struct npcm_video *video)
struct rect_list *tmp;
unsigned int i;
- for (i = 0; i < video->queue.num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(&video->queue); i++) {
head = &video->list[i];
list_for_each_safe(pos, nx, head) {
tmp = list_entry(pos, struct rect_list, list);
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 36/56] media: nuvoton: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Joseph Liu, Marvin Lin
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Joseph Liu <kwliu@nuvoton.com>
CC: Marvin Lin <kflin@nuvoton.com>
---
drivers/media/platform/nuvoton/npcm-video.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/nuvoton/npcm-video.c b/drivers/media/platform/nuvoton/npcm-video.c
index b9e6782f59b4..f9b4e36a5175 100644
--- a/drivers/media/platform/nuvoton/npcm-video.c
+++ b/drivers/media/platform/nuvoton/npcm-video.c
@@ -393,7 +393,7 @@ static void npcm_video_free_diff_table(struct npcm_video *video)
struct rect_list *tmp;
unsigned int i;
- for (i = 0; i < video->queue.num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(&video->queue); i++) {
head = &video->list[i];
list_for_each_safe(pos, nx, head) {
tmp = list_entry(pos, struct rect_list, list);
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 36/56] media: nuvoton: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Joseph Liu, Marvin Lin
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Joseph Liu <kwliu@nuvoton.com>
CC: Marvin Lin <kflin@nuvoton.com>
---
drivers/media/platform/nuvoton/npcm-video.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/platform/nuvoton/npcm-video.c b/drivers/media/platform/nuvoton/npcm-video.c
index b9e6782f59b4..f9b4e36a5175 100644
--- a/drivers/media/platform/nuvoton/npcm-video.c
+++ b/drivers/media/platform/nuvoton/npcm-video.c
@@ -393,7 +393,7 @@ static void npcm_video_free_diff_table(struct npcm_video *video)
struct rect_list *tmp;
unsigned int i;
- for (i = 0; i < video->queue.num_buffers; i++) {
+ for (i = 0; i < vb2_get_num_buffers(&video->queue); i++) {
head = &video->list[i];
list_for_each_safe(pos, nx, head) {
tmp = list_entry(pos, struct rect_list, list);
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 37/56] media: renesas: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Fabrizio Castro
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
---
drivers/media/platform/renesas/rcar_drif.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/renesas/rcar_drif.c b/drivers/media/platform/renesas/rcar_drif.c
index 292c5bf9e50c..f21d05054341 100644
--- a/drivers/media/platform/renesas/rcar_drif.c
+++ b/drivers/media/platform/renesas/rcar_drif.c
@@ -424,10 +424,11 @@ static int rcar_drif_queue_setup(struct vb2_queue *vq,
unsigned int sizes[], struct device *alloc_devs[])
{
struct rcar_drif_sdr *sdr = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
/* Need at least 16 buffers */
- if (vq->num_buffers + *num_buffers < 16)
- *num_buffers = 16 - vq->num_buffers;
+ if (q_num_bufs + *num_buffers < 16)
+ *num_buffers = 16 - q_num_bufs;
*num_planes = 1;
sizes[0] = PAGE_ALIGN(sdr->fmt->buffersize);
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 37/56] media: renesas: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Fabrizio Castro
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
---
drivers/media/platform/renesas/rcar_drif.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/renesas/rcar_drif.c b/drivers/media/platform/renesas/rcar_drif.c
index 292c5bf9e50c..f21d05054341 100644
--- a/drivers/media/platform/renesas/rcar_drif.c
+++ b/drivers/media/platform/renesas/rcar_drif.c
@@ -424,10 +424,11 @@ static int rcar_drif_queue_setup(struct vb2_queue *vq,
unsigned int sizes[], struct device *alloc_devs[])
{
struct rcar_drif_sdr *sdr = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
/* Need at least 16 buffers */
- if (vq->num_buffers + *num_buffers < 16)
- *num_buffers = 16 - vq->num_buffers;
+ if (q_num_bufs + *num_buffers < 16)
+ *num_buffers = 16 - q_num_bufs;
*num_planes = 1;
sizes[0] = PAGE_ALIGN(sdr->fmt->buffersize);
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 37/56] media: renesas: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Fabrizio Castro
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
---
drivers/media/platform/renesas/rcar_drif.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/renesas/rcar_drif.c b/drivers/media/platform/renesas/rcar_drif.c
index 292c5bf9e50c..f21d05054341 100644
--- a/drivers/media/platform/renesas/rcar_drif.c
+++ b/drivers/media/platform/renesas/rcar_drif.c
@@ -424,10 +424,11 @@ static int rcar_drif_queue_setup(struct vb2_queue *vq,
unsigned int sizes[], struct device *alloc_devs[])
{
struct rcar_drif_sdr *sdr = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
/* Need at least 16 buffers */
- if (vq->num_buffers + *num_buffers < 16)
- *num_buffers = 16 - vq->num_buffers;
+ if (q_num_bufs + *num_buffers < 16)
+ *num_buffers = 16 - q_num_bufs;
*num_planes = 1;
sizes[0] = PAGE_ALIGN(sdr->fmt->buffersize);
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 38/56] media: ti: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Lad, Prabhakar
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
---
drivers/media/platform/ti/am437x/am437x-vpfe.c | 5 +++--
drivers/media/platform/ti/cal/cal-video.c | 5 +++--
drivers/media/platform/ti/davinci/vpif_capture.c | 5 +++--
drivers/media/platform/ti/davinci/vpif_display.c | 5 +++--
drivers/media/platform/ti/omap/omap_vout.c | 5 +++--
5 files changed, 15 insertions(+), 10 deletions(-)
diff --git a/drivers/media/platform/ti/am437x/am437x-vpfe.c b/drivers/media/platform/ti/am437x/am437x-vpfe.c
index 5fa2ea9025d9..f18acf9286a2 100644
--- a/drivers/media/platform/ti/am437x/am437x-vpfe.c
+++ b/drivers/media/platform/ti/am437x/am437x-vpfe.c
@@ -1771,9 +1771,10 @@ static int vpfe_queue_setup(struct vb2_queue *vq,
{
struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
unsigned size = vpfe->fmt.fmt.pix.sizeimage;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes) {
if (sizes[0] < size)
diff --git a/drivers/media/platform/ti/cal/cal-video.c b/drivers/media/platform/ti/cal/cal-video.c
index a8abcd0fee17..94e67c057a20 100644
--- a/drivers/media/platform/ti/cal/cal-video.c
+++ b/drivers/media/platform/ti/cal/cal-video.c
@@ -603,9 +603,10 @@ static int cal_queue_setup(struct vb2_queue *vq,
{
struct cal_ctx *ctx = vb2_get_drv_priv(vq);
unsigned int size = ctx->v_fmt.fmt.pix.sizeimage;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes) {
if (sizes[0] < size)
diff --git a/drivers/media/platform/ti/davinci/vpif_capture.c b/drivers/media/platform/ti/davinci/vpif_capture.c
index 99fae8830c41..fc42b4bc37e6 100644
--- a/drivers/media/platform/ti/davinci/vpif_capture.c
+++ b/drivers/media/platform/ti/davinci/vpif_capture.c
@@ -113,6 +113,7 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
struct channel_obj *ch = vb2_get_drv_priv(vq);
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
unsigned size = common->fmt.fmt.pix.sizeimage;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
vpif_dbg(2, debug, "vpif_buffer_setup\n");
@@ -122,8 +123,8 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
size = sizes[0];
}
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
*nplanes = 1;
sizes[0] = size;
diff --git a/drivers/media/platform/ti/davinci/vpif_display.c b/drivers/media/platform/ti/davinci/vpif_display.c
index f8ec2991c667..9dbab1003c1d 100644
--- a/drivers/media/platform/ti/davinci/vpif_display.c
+++ b/drivers/media/platform/ti/davinci/vpif_display.c
@@ -115,6 +115,7 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
struct channel_obj *ch = vb2_get_drv_priv(vq);
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
unsigned size = common->fmt.fmt.pix.sizeimage;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
if (*nplanes) {
if (sizes[0] < size)
@@ -122,8 +123,8 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
size = sizes[0];
}
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
*nplanes = 1;
sizes[0] = size;
diff --git a/drivers/media/platform/ti/omap/omap_vout.c b/drivers/media/platform/ti/omap/omap_vout.c
index 4143274089c3..72ce903717d3 100644
--- a/drivers/media/platform/ti/omap/omap_vout.c
+++ b/drivers/media/platform/ti/omap/omap_vout.c
@@ -944,10 +944,11 @@ static int omap_vout_vb2_queue_setup(struct vb2_queue *vq,
struct device *alloc_devs[])
{
struct omap_vout_device *vout = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
int size = vout->pix.sizeimage;
- if (is_rotation_enabled(vout) && vq->num_buffers + *nbufs > VRFB_NUM_BUFS) {
- *nbufs = VRFB_NUM_BUFS - vq->num_buffers;
+ if (is_rotation_enabled(vout) && q_num_bufs + *nbufs > VRFB_NUM_BUFS) {
+ *nbufs = VRFB_NUM_BUFS - q_num_bufs;
if (*nbufs == 0)
return -EINVAL;
}
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 38/56] media: ti: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Lad, Prabhakar
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
---
drivers/media/platform/ti/am437x/am437x-vpfe.c | 5 +++--
drivers/media/platform/ti/cal/cal-video.c | 5 +++--
drivers/media/platform/ti/davinci/vpif_capture.c | 5 +++--
drivers/media/platform/ti/davinci/vpif_display.c | 5 +++--
drivers/media/platform/ti/omap/omap_vout.c | 5 +++--
5 files changed, 15 insertions(+), 10 deletions(-)
diff --git a/drivers/media/platform/ti/am437x/am437x-vpfe.c b/drivers/media/platform/ti/am437x/am437x-vpfe.c
index 5fa2ea9025d9..f18acf9286a2 100644
--- a/drivers/media/platform/ti/am437x/am437x-vpfe.c
+++ b/drivers/media/platform/ti/am437x/am437x-vpfe.c
@@ -1771,9 +1771,10 @@ static int vpfe_queue_setup(struct vb2_queue *vq,
{
struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
unsigned size = vpfe->fmt.fmt.pix.sizeimage;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes) {
if (sizes[0] < size)
diff --git a/drivers/media/platform/ti/cal/cal-video.c b/drivers/media/platform/ti/cal/cal-video.c
index a8abcd0fee17..94e67c057a20 100644
--- a/drivers/media/platform/ti/cal/cal-video.c
+++ b/drivers/media/platform/ti/cal/cal-video.c
@@ -603,9 +603,10 @@ static int cal_queue_setup(struct vb2_queue *vq,
{
struct cal_ctx *ctx = vb2_get_drv_priv(vq);
unsigned int size = ctx->v_fmt.fmt.pix.sizeimage;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes) {
if (sizes[0] < size)
diff --git a/drivers/media/platform/ti/davinci/vpif_capture.c b/drivers/media/platform/ti/davinci/vpif_capture.c
index 99fae8830c41..fc42b4bc37e6 100644
--- a/drivers/media/platform/ti/davinci/vpif_capture.c
+++ b/drivers/media/platform/ti/davinci/vpif_capture.c
@@ -113,6 +113,7 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
struct channel_obj *ch = vb2_get_drv_priv(vq);
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
unsigned size = common->fmt.fmt.pix.sizeimage;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
vpif_dbg(2, debug, "vpif_buffer_setup\n");
@@ -122,8 +123,8 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
size = sizes[0];
}
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
*nplanes = 1;
sizes[0] = size;
diff --git a/drivers/media/platform/ti/davinci/vpif_display.c b/drivers/media/platform/ti/davinci/vpif_display.c
index f8ec2991c667..9dbab1003c1d 100644
--- a/drivers/media/platform/ti/davinci/vpif_display.c
+++ b/drivers/media/platform/ti/davinci/vpif_display.c
@@ -115,6 +115,7 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
struct channel_obj *ch = vb2_get_drv_priv(vq);
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
unsigned size = common->fmt.fmt.pix.sizeimage;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
if (*nplanes) {
if (sizes[0] < size)
@@ -122,8 +123,8 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
size = sizes[0];
}
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
*nplanes = 1;
sizes[0] = size;
diff --git a/drivers/media/platform/ti/omap/omap_vout.c b/drivers/media/platform/ti/omap/omap_vout.c
index 4143274089c3..72ce903717d3 100644
--- a/drivers/media/platform/ti/omap/omap_vout.c
+++ b/drivers/media/platform/ti/omap/omap_vout.c
@@ -944,10 +944,11 @@ static int omap_vout_vb2_queue_setup(struct vb2_queue *vq,
struct device *alloc_devs[])
{
struct omap_vout_device *vout = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
int size = vout->pix.sizeimage;
- if (is_rotation_enabled(vout) && vq->num_buffers + *nbufs > VRFB_NUM_BUFS) {
- *nbufs = VRFB_NUM_BUFS - vq->num_buffers;
+ if (is_rotation_enabled(vout) && q_num_bufs + *nbufs > VRFB_NUM_BUFS) {
+ *nbufs = VRFB_NUM_BUFS - q_num_bufs;
if (*nbufs == 0)
return -EINVAL;
}
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 38/56] media: ti: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Lad, Prabhakar
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
---
drivers/media/platform/ti/am437x/am437x-vpfe.c | 5 +++--
drivers/media/platform/ti/cal/cal-video.c | 5 +++--
drivers/media/platform/ti/davinci/vpif_capture.c | 5 +++--
drivers/media/platform/ti/davinci/vpif_display.c | 5 +++--
drivers/media/platform/ti/omap/omap_vout.c | 5 +++--
5 files changed, 15 insertions(+), 10 deletions(-)
diff --git a/drivers/media/platform/ti/am437x/am437x-vpfe.c b/drivers/media/platform/ti/am437x/am437x-vpfe.c
index 5fa2ea9025d9..f18acf9286a2 100644
--- a/drivers/media/platform/ti/am437x/am437x-vpfe.c
+++ b/drivers/media/platform/ti/am437x/am437x-vpfe.c
@@ -1771,9 +1771,10 @@ static int vpfe_queue_setup(struct vb2_queue *vq,
{
struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
unsigned size = vpfe->fmt.fmt.pix.sizeimage;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes) {
if (sizes[0] < size)
diff --git a/drivers/media/platform/ti/cal/cal-video.c b/drivers/media/platform/ti/cal/cal-video.c
index a8abcd0fee17..94e67c057a20 100644
--- a/drivers/media/platform/ti/cal/cal-video.c
+++ b/drivers/media/platform/ti/cal/cal-video.c
@@ -603,9 +603,10 @@ static int cal_queue_setup(struct vb2_queue *vq,
{
struct cal_ctx *ctx = vb2_get_drv_priv(vq);
unsigned int size = ctx->v_fmt.fmt.pix.sizeimage;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
if (*nplanes) {
if (sizes[0] < size)
diff --git a/drivers/media/platform/ti/davinci/vpif_capture.c b/drivers/media/platform/ti/davinci/vpif_capture.c
index 99fae8830c41..fc42b4bc37e6 100644
--- a/drivers/media/platform/ti/davinci/vpif_capture.c
+++ b/drivers/media/platform/ti/davinci/vpif_capture.c
@@ -113,6 +113,7 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
struct channel_obj *ch = vb2_get_drv_priv(vq);
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
unsigned size = common->fmt.fmt.pix.sizeimage;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
vpif_dbg(2, debug, "vpif_buffer_setup\n");
@@ -122,8 +123,8 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
size = sizes[0];
}
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
*nplanes = 1;
sizes[0] = size;
diff --git a/drivers/media/platform/ti/davinci/vpif_display.c b/drivers/media/platform/ti/davinci/vpif_display.c
index f8ec2991c667..9dbab1003c1d 100644
--- a/drivers/media/platform/ti/davinci/vpif_display.c
+++ b/drivers/media/platform/ti/davinci/vpif_display.c
@@ -115,6 +115,7 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
struct channel_obj *ch = vb2_get_drv_priv(vq);
struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
unsigned size = common->fmt.fmt.pix.sizeimage;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
if (*nplanes) {
if (sizes[0] < size)
@@ -122,8 +123,8 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
size = sizes[0];
}
- if (vq->num_buffers + *nbuffers < 3)
- *nbuffers = 3 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 3)
+ *nbuffers = 3 - q_num_bufs;
*nplanes = 1;
sizes[0] = size;
diff --git a/drivers/media/platform/ti/omap/omap_vout.c b/drivers/media/platform/ti/omap/omap_vout.c
index 4143274089c3..72ce903717d3 100644
--- a/drivers/media/platform/ti/omap/omap_vout.c
+++ b/drivers/media/platform/ti/omap/omap_vout.c
@@ -944,10 +944,11 @@ static int omap_vout_vb2_queue_setup(struct vb2_queue *vq,
struct device *alloc_devs[])
{
struct omap_vout_device *vout = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
int size = vout->pix.sizeimage;
- if (is_rotation_enabled(vout) && vq->num_buffers + *nbufs > VRFB_NUM_BUFS) {
- *nbufs = VRFB_NUM_BUFS - vq->num_buffers;
+ if (is_rotation_enabled(vout) && q_num_bufs + *nbufs > VRFB_NUM_BUFS) {
+ *nbufs = VRFB_NUM_BUFS - q_num_bufs;
if (*nbufs == 0)
return -EINVAL;
}
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 39/56] media: usb: airspy: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/usb/airspy/airspy.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/usb/airspy/airspy.c b/drivers/media/usb/airspy/airspy.c
index 462eb8423506..e24e655fb1db 100644
--- a/drivers/media/usb/airspy/airspy.c
+++ b/drivers/media/usb/airspy/airspy.c
@@ -482,12 +482,13 @@ static int airspy_queue_setup(struct vb2_queue *vq,
unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[])
{
struct airspy *s = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev_dbg(s->dev, "nbuffers=%d\n", *nbuffers);
/* Need at least 8 buffers */
- if (vq->num_buffers + *nbuffers < 8)
- *nbuffers = 8 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 8)
+ *nbuffers = 8 - q_num_bufs;
*nplanes = 1;
sizes[0] = PAGE_ALIGN(s->buffersize);
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 39/56] media: usb: airspy: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/usb/airspy/airspy.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/usb/airspy/airspy.c b/drivers/media/usb/airspy/airspy.c
index 462eb8423506..e24e655fb1db 100644
--- a/drivers/media/usb/airspy/airspy.c
+++ b/drivers/media/usb/airspy/airspy.c
@@ -482,12 +482,13 @@ static int airspy_queue_setup(struct vb2_queue *vq,
unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[])
{
struct airspy *s = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev_dbg(s->dev, "nbuffers=%d\n", *nbuffers);
/* Need at least 8 buffers */
- if (vq->num_buffers + *nbuffers < 8)
- *nbuffers = 8 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 8)
+ *nbuffers = 8 - q_num_bufs;
*nplanes = 1;
sizes[0] = PAGE_ALIGN(s->buffersize);
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 39/56] media: usb: airspy: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/usb/airspy/airspy.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/usb/airspy/airspy.c b/drivers/media/usb/airspy/airspy.c
index 462eb8423506..e24e655fb1db 100644
--- a/drivers/media/usb/airspy/airspy.c
+++ b/drivers/media/usb/airspy/airspy.c
@@ -482,12 +482,13 @@ static int airspy_queue_setup(struct vb2_queue *vq,
unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[])
{
struct airspy *s = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev_dbg(s->dev, "nbuffers=%d\n", *nbuffers);
/* Need at least 8 buffers */
- if (vq->num_buffers + *nbuffers < 8)
- *nbuffers = 8 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 8)
+ *nbuffers = 8 - q_num_bufs;
*nplanes = 1;
sizes[0] = PAGE_ALIGN(s->buffersize);
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 40/56] media: usb: cx231xx: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/usb/cx231xx/cx231xx-417.c | 5 +++--
drivers/media/usb/cx231xx/cx231xx-video.c | 5 +++--
2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/media/usb/cx231xx/cx231xx-417.c b/drivers/media/usb/cx231xx/cx231xx-417.c
index fe4410a5e128..45973fe690b2 100644
--- a/drivers/media/usb/cx231xx/cx231xx-417.c
+++ b/drivers/media/usb/cx231xx/cx231xx-417.c
@@ -1218,12 +1218,13 @@ static int queue_setup(struct vb2_queue *vq,
{
struct cx231xx *dev = vb2_get_drv_priv(vq);
unsigned int size = mpeglinesize * mpeglines;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev->ts1.ts_packet_size = mpeglinesize;
dev->ts1.ts_packet_count = mpeglines;
- if (vq->num_buffers + *nbuffers < CX231XX_MIN_BUF)
- *nbuffers = CX231XX_MIN_BUF - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < CX231XX_MIN_BUF)
+ *nbuffers = CX231XX_MIN_BUF - q_num_bufs;
if (*nplanes)
return sizes[0] < size ? -EINVAL : 0;
diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c
index e23b8ccd79d4..c8eb4222319d 100644
--- a/drivers/media/usb/cx231xx/cx231xx-video.c
+++ b/drivers/media/usb/cx231xx/cx231xx-video.c
@@ -714,11 +714,12 @@ static int queue_setup(struct vb2_queue *vq,
unsigned int sizes[], struct device *alloc_devs[])
{
struct cx231xx *dev = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev->size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
- if (vq->num_buffers + *nbuffers < CX231XX_MIN_BUF)
- *nbuffers = CX231XX_MIN_BUF - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < CX231XX_MIN_BUF)
+ *nbuffers = CX231XX_MIN_BUF - q_num_bufs;
if (*nplanes)
return sizes[0] < dev->size ? -EINVAL : 0;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 40/56] media: usb: cx231xx: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/usb/cx231xx/cx231xx-417.c | 5 +++--
drivers/media/usb/cx231xx/cx231xx-video.c | 5 +++--
2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/media/usb/cx231xx/cx231xx-417.c b/drivers/media/usb/cx231xx/cx231xx-417.c
index fe4410a5e128..45973fe690b2 100644
--- a/drivers/media/usb/cx231xx/cx231xx-417.c
+++ b/drivers/media/usb/cx231xx/cx231xx-417.c
@@ -1218,12 +1218,13 @@ static int queue_setup(struct vb2_queue *vq,
{
struct cx231xx *dev = vb2_get_drv_priv(vq);
unsigned int size = mpeglinesize * mpeglines;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev->ts1.ts_packet_size = mpeglinesize;
dev->ts1.ts_packet_count = mpeglines;
- if (vq->num_buffers + *nbuffers < CX231XX_MIN_BUF)
- *nbuffers = CX231XX_MIN_BUF - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < CX231XX_MIN_BUF)
+ *nbuffers = CX231XX_MIN_BUF - q_num_bufs;
if (*nplanes)
return sizes[0] < size ? -EINVAL : 0;
diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c
index e23b8ccd79d4..c8eb4222319d 100644
--- a/drivers/media/usb/cx231xx/cx231xx-video.c
+++ b/drivers/media/usb/cx231xx/cx231xx-video.c
@@ -714,11 +714,12 @@ static int queue_setup(struct vb2_queue *vq,
unsigned int sizes[], struct device *alloc_devs[])
{
struct cx231xx *dev = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev->size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
- if (vq->num_buffers + *nbuffers < CX231XX_MIN_BUF)
- *nbuffers = CX231XX_MIN_BUF - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < CX231XX_MIN_BUF)
+ *nbuffers = CX231XX_MIN_BUF - q_num_bufs;
if (*nplanes)
return sizes[0] < dev->size ? -EINVAL : 0;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 40/56] media: usb: cx231xx: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/usb/cx231xx/cx231xx-417.c | 5 +++--
drivers/media/usb/cx231xx/cx231xx-video.c | 5 +++--
2 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/media/usb/cx231xx/cx231xx-417.c b/drivers/media/usb/cx231xx/cx231xx-417.c
index fe4410a5e128..45973fe690b2 100644
--- a/drivers/media/usb/cx231xx/cx231xx-417.c
+++ b/drivers/media/usb/cx231xx/cx231xx-417.c
@@ -1218,12 +1218,13 @@ static int queue_setup(struct vb2_queue *vq,
{
struct cx231xx *dev = vb2_get_drv_priv(vq);
unsigned int size = mpeglinesize * mpeglines;
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev->ts1.ts_packet_size = mpeglinesize;
dev->ts1.ts_packet_count = mpeglines;
- if (vq->num_buffers + *nbuffers < CX231XX_MIN_BUF)
- *nbuffers = CX231XX_MIN_BUF - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < CX231XX_MIN_BUF)
+ *nbuffers = CX231XX_MIN_BUF - q_num_bufs;
if (*nplanes)
return sizes[0] < size ? -EINVAL : 0;
diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c
index e23b8ccd79d4..c8eb4222319d 100644
--- a/drivers/media/usb/cx231xx/cx231xx-video.c
+++ b/drivers/media/usb/cx231xx/cx231xx-video.c
@@ -714,11 +714,12 @@ static int queue_setup(struct vb2_queue *vq,
unsigned int sizes[], struct device *alloc_devs[])
{
struct cx231xx *dev = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev->size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
- if (vq->num_buffers + *nbuffers < CX231XX_MIN_BUF)
- *nbuffers = CX231XX_MIN_BUF - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < CX231XX_MIN_BUF)
+ *nbuffers = CX231XX_MIN_BUF - q_num_bufs;
if (*nplanes)
return sizes[0] < dev->size ? -EINVAL : 0;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 41/56] media: usb: hackrf: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Antti Palosaari
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Antti Palosaari <crope@iki.fi>
---
drivers/media/usb/hackrf/hackrf.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/usb/hackrf/hackrf.c b/drivers/media/usb/hackrf/hackrf.c
index 3e535be2c520..9c0ecd5f056c 100644
--- a/drivers/media/usb/hackrf/hackrf.c
+++ b/drivers/media/usb/hackrf/hackrf.c
@@ -753,12 +753,13 @@ static int hackrf_queue_setup(struct vb2_queue *vq,
unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[])
{
struct hackrf_dev *dev = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev_dbg(dev->dev, "nbuffers=%d\n", *nbuffers);
/* Need at least 8 buffers */
- if (vq->num_buffers + *nbuffers < 8)
- *nbuffers = 8 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 8)
+ *nbuffers = 8 - q_num_bufs;
*nplanes = 1;
sizes[0] = PAGE_ALIGN(dev->buffersize);
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 41/56] media: usb: hackrf: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Antti Palosaari
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Antti Palosaari <crope@iki.fi>
---
drivers/media/usb/hackrf/hackrf.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/usb/hackrf/hackrf.c b/drivers/media/usb/hackrf/hackrf.c
index 3e535be2c520..9c0ecd5f056c 100644
--- a/drivers/media/usb/hackrf/hackrf.c
+++ b/drivers/media/usb/hackrf/hackrf.c
@@ -753,12 +753,13 @@ static int hackrf_queue_setup(struct vb2_queue *vq,
unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[])
{
struct hackrf_dev *dev = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev_dbg(dev->dev, "nbuffers=%d\n", *nbuffers);
/* Need at least 8 buffers */
- if (vq->num_buffers + *nbuffers < 8)
- *nbuffers = 8 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 8)
+ *nbuffers = 8 - q_num_bufs;
*nplanes = 1;
sizes[0] = PAGE_ALIGN(dev->buffersize);
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 41/56] media: usb: hackrf: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard, Antti Palosaari
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Antti Palosaari <crope@iki.fi>
---
drivers/media/usb/hackrf/hackrf.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/usb/hackrf/hackrf.c b/drivers/media/usb/hackrf/hackrf.c
index 3e535be2c520..9c0ecd5f056c 100644
--- a/drivers/media/usb/hackrf/hackrf.c
+++ b/drivers/media/usb/hackrf/hackrf.c
@@ -753,12 +753,13 @@ static int hackrf_queue_setup(struct vb2_queue *vq,
unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[])
{
struct hackrf_dev *dev = vb2_get_drv_priv(vq);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
dev_dbg(dev->dev, "nbuffers=%d\n", *nbuffers);
/* Need at least 8 buffers */
- if (vq->num_buffers + *nbuffers < 8)
- *nbuffers = 8 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 8)
+ *nbuffers = 8 - q_num_bufs;
*nplanes = 1;
sizes[0] = PAGE_ALIGN(dev->buffersize);
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 42/56] media: usb: usbtv: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/usb/usbtv/usbtv-video.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/usb/usbtv/usbtv-video.c b/drivers/media/usb/usbtv/usbtv-video.c
index 1e30e05953dc..62a583040cd4 100644
--- a/drivers/media/usb/usbtv/usbtv-video.c
+++ b/drivers/media/usb/usbtv/usbtv-video.c
@@ -726,9 +726,10 @@ static int usbtv_queue_setup(struct vb2_queue *vq,
{
struct usbtv *usbtv = vb2_get_drv_priv(vq);
unsigned size = USBTV_CHUNK * usbtv->n_chunks * 2 * sizeof(u32);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 2)
+ *nbuffers = 2 - q_num_bufs;
if (*nplanes)
return sizes[0] < size ? -EINVAL : 0;
*nplanes = 1;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 42/56] media: usb: usbtv: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/usb/usbtv/usbtv-video.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/usb/usbtv/usbtv-video.c b/drivers/media/usb/usbtv/usbtv-video.c
index 1e30e05953dc..62a583040cd4 100644
--- a/drivers/media/usb/usbtv/usbtv-video.c
+++ b/drivers/media/usb/usbtv/usbtv-video.c
@@ -726,9 +726,10 @@ static int usbtv_queue_setup(struct vb2_queue *vq,
{
struct usbtv *usbtv = vb2_get_drv_priv(vq);
unsigned size = USBTV_CHUNK * usbtv->n_chunks * 2 * sizeof(u32);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 2)
+ *nbuffers = 2 - q_num_bufs;
if (*nplanes)
return sizes[0] < size ? -EINVAL : 0;
*nplanes = 1;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 42/56] media: usb: usbtv: Stop direct calls to queue num_buffers field
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
This allows us to change how the number of buffers is computed in the
future.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/usb/usbtv/usbtv-video.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/media/usb/usbtv/usbtv-video.c b/drivers/media/usb/usbtv/usbtv-video.c
index 1e30e05953dc..62a583040cd4 100644
--- a/drivers/media/usb/usbtv/usbtv-video.c
+++ b/drivers/media/usb/usbtv/usbtv-video.c
@@ -726,9 +726,10 @@ static int usbtv_queue_setup(struct vb2_queue *vq,
{
struct usbtv *usbtv = vb2_get_drv_priv(vq);
unsigned size = USBTV_CHUNK * usbtv->n_chunks * 2 * sizeof(u32);
+ unsigned int q_num_bufs = vb2_get_num_buffers(vq);
- if (vq->num_buffers + *nbuffers < 2)
- *nbuffers = 2 - vq->num_buffers;
+ if (q_num_bufs + *nbuffers < 2)
+ *nbuffers = 2 - q_num_bufs;
if (*nplanes)
return sizes[0] < size ? -EINVAL : 0;
*nplanes = 1;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 43/56] media: videobuf2: Be more flexible on the number of queue stored buffers
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Add 'max_num_buffers' field in vb2_queue struct to let drivers decide
how many buffers could be stored in a queue.
This require 'bufs' array to be allocated at queue init time and freed
when releasing the queue.
By default VB2_MAX_FRAME remains the limit.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
---
.../media/common/videobuf2/videobuf2-core.c | 41 +++++++++++++++----
.../media/common/videobuf2/videobuf2-v4l2.c | 6 +--
include/media/videobuf2-core.h | 10 ++++-
3 files changed, 44 insertions(+), 13 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index c5c5ae4d213d..72ef7179d80a 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -416,7 +416,7 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
*/
static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
{
- WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
+ WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
q->bufs[index] = vb;
vb->index = index;
@@ -449,9 +449,9 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
struct vb2_buffer *vb;
int ret;
- /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
+ /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
num_buffers = min_t(unsigned int, num_buffers,
- VB2_MAX_FRAME - q_num_buffers);
+ q->max_num_buffers - q_num_buffers);
for (buffer = 0; buffer < num_buffers; ++buffer) {
/* Allocate vb2 buffer structures */
@@ -813,7 +813,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned plane_sizes[VB2_MAX_PLANES] = { };
bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
unsigned int i;
- int ret;
+ int ret = 0;
if (q->streaming) {
dprintk(q, 1, "streaming active\n");
@@ -857,17 +857,22 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
/*
* Make sure the requested values and current defaults are sane.
*/
- WARN_ON(q->min_buffers_needed > VB2_MAX_FRAME);
num_buffers = max_t(unsigned int, *count, q->min_buffers_needed);
- num_buffers = min_t(unsigned int, num_buffers, VB2_MAX_FRAME);
+ num_buffers = min_t(unsigned int, num_buffers, q->max_num_buffers);
memset(q->alloc_devs, 0, sizeof(q->alloc_devs));
/*
* Set this now to ensure that drivers see the correct q->memory value
* in the queue_setup op.
*/
mutex_lock(&q->mmap_lock);
+ if (!q->bufs)
+ q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
+ if (!q->bufs)
+ ret = -ENOMEM;
q->memory = memory;
mutex_unlock(&q->mmap_lock);
+ if (ret)
+ return ret;
set_queue_coherency(q, non_coherent_mem);
/*
@@ -976,7 +981,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
bool no_previous_buffers = !q_num_bufs;
int ret = 0;
- if (q_num_bufs == VB2_MAX_FRAME) {
+ if (q->num_buffers == q->max_num_buffers) {
dprintk(q, 1, "maximum number of buffers already allocated\n");
return -ENOBUFS;
}
@@ -993,7 +998,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
*/
mutex_lock(&q->mmap_lock);
q->memory = memory;
+ if (!q->bufs)
+ q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
+ if (!q->bufs)
+ ret = -ENOMEM;
mutex_unlock(&q->mmap_lock);
+ if (ret)
+ return ret;
q->waiting_for_buffers = !q->is_output;
set_queue_coherency(q, non_coherent_mem);
} else {
@@ -1005,7 +1016,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
return -EINVAL;
}
- num_buffers = min(*count, VB2_MAX_FRAME - q_num_bufs);
+ num_buffers = min(*count, q->max_num_buffers - q_num_bufs);
if (requested_planes && requested_sizes) {
num_planes = requested_planes;
@@ -2465,6 +2476,12 @@ int vb2_core_queue_init(struct vb2_queue *q)
/*
* Sanity check
*/
+ if (!q->max_num_buffers)
+ q->max_num_buffers = VB2_MAX_FRAME;
+
+ /* The maximum is limited by offset cookie encoding pattern */
+ q->max_num_buffers = min_t(unsigned int, q->max_num_buffers, MAX_BUFFER_INDEX);
+
if (WARN_ON(!q) ||
WARN_ON(!q->ops) ||
WARN_ON(!q->mem_ops) ||
@@ -2474,6 +2491,10 @@ int vb2_core_queue_init(struct vb2_queue *q)
WARN_ON(!q->ops->buf_queue))
return -EINVAL;
+ if (WARN_ON(q->max_num_buffers > MAX_BUFFER_INDEX) ||
+ WARN_ON(q->min_buffers_needed > q->max_num_buffers))
+ return -EINVAL;
+
if (WARN_ON(q->requires_requests && !q->supports_requests))
return -EINVAL;
@@ -2519,7 +2540,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
__vb2_cleanup_fileio(q);
__vb2_queue_cancel(q);
mutex_lock(&q->mmap_lock);
- __vb2_queue_free(q, vb2_get_num_buffers(q));
+ __vb2_queue_free(q, q->max_num_buffers);
+ kfree(q->bufs);
+ q->bufs = NULL;
q->num_buffers = 0;
mutex_unlock(&q->mmap_lock);
}
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index 7d798fb15c0b..f3cf4b235c1f 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -627,7 +627,7 @@ struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp)
* This loop doesn't scale if there is a really large number of buffers.
* Maybe something more efficient will be needed in this case.
*/
- for (i = 0; i < vb2_get_num_buffers(q); i++) {
+ for (i = 0; i < q->max_num_buffers; i++) {
vb2 = vb2_get_buffer(q, i);
if (!vb2)
@@ -1142,7 +1142,7 @@ int _vb2_fop_release(struct file *file, struct mutex *lock)
if (lock)
mutex_lock(lock);
- if (file->private_data == vdev->queue->owner) {
+ if (!vdev->queue->owner || file->private_data == vdev->queue->owner) {
vb2_queue_release(vdev->queue);
vdev->queue->owner = NULL;
}
@@ -1270,7 +1270,7 @@ void vb2_video_unregister_device(struct video_device *vdev)
*/
get_device(&vdev->dev);
video_unregister_device(vdev);
- if (vdev->queue && vdev->queue->owner) {
+ if (vdev->queue) {
struct mutex *lock = vdev->queue->lock ?
vdev->queue->lock : vdev->lock;
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 8f9d9e4af5b1..e77a397195f2 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -558,6 +558,7 @@ struct vb2_buf_ops {
* @dma_dir: DMA mapping direction.
* @bufs: videobuf2 buffer structures
* @num_buffers: number of allocated/used buffers
+ * @max_num_buffers: upper limit of number of allocated/used buffers
* @queued_list: list of buffers currently queued from userspace
* @queued_count: number of buffers queued and ready for streaming.
* @owned_by_drv_count: number of buffers owned by the driver
@@ -619,8 +620,9 @@ struct vb2_queue {
struct mutex mmap_lock;
unsigned int memory;
enum dma_data_direction dma_dir;
- struct vb2_buffer *bufs[VB2_MAX_FRAME];
+ struct vb2_buffer **bufs;
unsigned int num_buffers;
+ unsigned int max_num_buffers;
struct list_head queued_list;
unsigned int queued_count;
@@ -1248,6 +1250,12 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
unsigned int index)
{
+ if (!q->bufs)
+ return NULL;
+
+ if (index >= q->max_num_buffers)
+ return NULL;
+
if (index < q->num_buffers)
return q->bufs[index];
return NULL;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 43/56] media: videobuf2: Be more flexible on the number of queue stored buffers
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Add 'max_num_buffers' field in vb2_queue struct to let drivers decide
how many buffers could be stored in a queue.
This require 'bufs' array to be allocated at queue init time and freed
when releasing the queue.
By default VB2_MAX_FRAME remains the limit.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
---
.../media/common/videobuf2/videobuf2-core.c | 41 +++++++++++++++----
.../media/common/videobuf2/videobuf2-v4l2.c | 6 +--
include/media/videobuf2-core.h | 10 ++++-
3 files changed, 44 insertions(+), 13 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index c5c5ae4d213d..72ef7179d80a 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -416,7 +416,7 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
*/
static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
{
- WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
+ WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
q->bufs[index] = vb;
vb->index = index;
@@ -449,9 +449,9 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
struct vb2_buffer *vb;
int ret;
- /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
+ /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
num_buffers = min_t(unsigned int, num_buffers,
- VB2_MAX_FRAME - q_num_buffers);
+ q->max_num_buffers - q_num_buffers);
for (buffer = 0; buffer < num_buffers; ++buffer) {
/* Allocate vb2 buffer structures */
@@ -813,7 +813,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned plane_sizes[VB2_MAX_PLANES] = { };
bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
unsigned int i;
- int ret;
+ int ret = 0;
if (q->streaming) {
dprintk(q, 1, "streaming active\n");
@@ -857,17 +857,22 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
/*
* Make sure the requested values and current defaults are sane.
*/
- WARN_ON(q->min_buffers_needed > VB2_MAX_FRAME);
num_buffers = max_t(unsigned int, *count, q->min_buffers_needed);
- num_buffers = min_t(unsigned int, num_buffers, VB2_MAX_FRAME);
+ num_buffers = min_t(unsigned int, num_buffers, q->max_num_buffers);
memset(q->alloc_devs, 0, sizeof(q->alloc_devs));
/*
* Set this now to ensure that drivers see the correct q->memory value
* in the queue_setup op.
*/
mutex_lock(&q->mmap_lock);
+ if (!q->bufs)
+ q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
+ if (!q->bufs)
+ ret = -ENOMEM;
q->memory = memory;
mutex_unlock(&q->mmap_lock);
+ if (ret)
+ return ret;
set_queue_coherency(q, non_coherent_mem);
/*
@@ -976,7 +981,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
bool no_previous_buffers = !q_num_bufs;
int ret = 0;
- if (q_num_bufs == VB2_MAX_FRAME) {
+ if (q->num_buffers == q->max_num_buffers) {
dprintk(q, 1, "maximum number of buffers already allocated\n");
return -ENOBUFS;
}
@@ -993,7 +998,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
*/
mutex_lock(&q->mmap_lock);
q->memory = memory;
+ if (!q->bufs)
+ q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
+ if (!q->bufs)
+ ret = -ENOMEM;
mutex_unlock(&q->mmap_lock);
+ if (ret)
+ return ret;
q->waiting_for_buffers = !q->is_output;
set_queue_coherency(q, non_coherent_mem);
} else {
@@ -1005,7 +1016,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
return -EINVAL;
}
- num_buffers = min(*count, VB2_MAX_FRAME - q_num_bufs);
+ num_buffers = min(*count, q->max_num_buffers - q_num_bufs);
if (requested_planes && requested_sizes) {
num_planes = requested_planes;
@@ -2465,6 +2476,12 @@ int vb2_core_queue_init(struct vb2_queue *q)
/*
* Sanity check
*/
+ if (!q->max_num_buffers)
+ q->max_num_buffers = VB2_MAX_FRAME;
+
+ /* The maximum is limited by offset cookie encoding pattern */
+ q->max_num_buffers = min_t(unsigned int, q->max_num_buffers, MAX_BUFFER_INDEX);
+
if (WARN_ON(!q) ||
WARN_ON(!q->ops) ||
WARN_ON(!q->mem_ops) ||
@@ -2474,6 +2491,10 @@ int vb2_core_queue_init(struct vb2_queue *q)
WARN_ON(!q->ops->buf_queue))
return -EINVAL;
+ if (WARN_ON(q->max_num_buffers > MAX_BUFFER_INDEX) ||
+ WARN_ON(q->min_buffers_needed > q->max_num_buffers))
+ return -EINVAL;
+
if (WARN_ON(q->requires_requests && !q->supports_requests))
return -EINVAL;
@@ -2519,7 +2540,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
__vb2_cleanup_fileio(q);
__vb2_queue_cancel(q);
mutex_lock(&q->mmap_lock);
- __vb2_queue_free(q, vb2_get_num_buffers(q));
+ __vb2_queue_free(q, q->max_num_buffers);
+ kfree(q->bufs);
+ q->bufs = NULL;
q->num_buffers = 0;
mutex_unlock(&q->mmap_lock);
}
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index 7d798fb15c0b..f3cf4b235c1f 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -627,7 +627,7 @@ struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp)
* This loop doesn't scale if there is a really large number of buffers.
* Maybe something more efficient will be needed in this case.
*/
- for (i = 0; i < vb2_get_num_buffers(q); i++) {
+ for (i = 0; i < q->max_num_buffers; i++) {
vb2 = vb2_get_buffer(q, i);
if (!vb2)
@@ -1142,7 +1142,7 @@ int _vb2_fop_release(struct file *file, struct mutex *lock)
if (lock)
mutex_lock(lock);
- if (file->private_data == vdev->queue->owner) {
+ if (!vdev->queue->owner || file->private_data == vdev->queue->owner) {
vb2_queue_release(vdev->queue);
vdev->queue->owner = NULL;
}
@@ -1270,7 +1270,7 @@ void vb2_video_unregister_device(struct video_device *vdev)
*/
get_device(&vdev->dev);
video_unregister_device(vdev);
- if (vdev->queue && vdev->queue->owner) {
+ if (vdev->queue) {
struct mutex *lock = vdev->queue->lock ?
vdev->queue->lock : vdev->lock;
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 8f9d9e4af5b1..e77a397195f2 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -558,6 +558,7 @@ struct vb2_buf_ops {
* @dma_dir: DMA mapping direction.
* @bufs: videobuf2 buffer structures
* @num_buffers: number of allocated/used buffers
+ * @max_num_buffers: upper limit of number of allocated/used buffers
* @queued_list: list of buffers currently queued from userspace
* @queued_count: number of buffers queued and ready for streaming.
* @owned_by_drv_count: number of buffers owned by the driver
@@ -619,8 +620,9 @@ struct vb2_queue {
struct mutex mmap_lock;
unsigned int memory;
enum dma_data_direction dma_dir;
- struct vb2_buffer *bufs[VB2_MAX_FRAME];
+ struct vb2_buffer **bufs;
unsigned int num_buffers;
+ unsigned int max_num_buffers;
struct list_head queued_list;
unsigned int queued_count;
@@ -1248,6 +1250,12 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
unsigned int index)
{
+ if (!q->bufs)
+ return NULL;
+
+ if (index >= q->max_num_buffers)
+ return NULL;
+
if (index < q->num_buffers)
return q->bufs[index];
return NULL;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 43/56] media: videobuf2: Be more flexible on the number of queue stored buffers
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Add 'max_num_buffers' field in vb2_queue struct to let drivers decide
how many buffers could be stored in a queue.
This require 'bufs' array to be allocated at queue init time and freed
when releasing the queue.
By default VB2_MAX_FRAME remains the limit.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
---
.../media/common/videobuf2/videobuf2-core.c | 41 +++++++++++++++----
.../media/common/videobuf2/videobuf2-v4l2.c | 6 +--
include/media/videobuf2-core.h | 10 ++++-
3 files changed, 44 insertions(+), 13 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index c5c5ae4d213d..72ef7179d80a 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -416,7 +416,7 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
*/
static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
{
- WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
+ WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
q->bufs[index] = vb;
vb->index = index;
@@ -449,9 +449,9 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
struct vb2_buffer *vb;
int ret;
- /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
+ /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
num_buffers = min_t(unsigned int, num_buffers,
- VB2_MAX_FRAME - q_num_buffers);
+ q->max_num_buffers - q_num_buffers);
for (buffer = 0; buffer < num_buffers; ++buffer) {
/* Allocate vb2 buffer structures */
@@ -813,7 +813,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned plane_sizes[VB2_MAX_PLANES] = { };
bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
unsigned int i;
- int ret;
+ int ret = 0;
if (q->streaming) {
dprintk(q, 1, "streaming active\n");
@@ -857,17 +857,22 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
/*
* Make sure the requested values and current defaults are sane.
*/
- WARN_ON(q->min_buffers_needed > VB2_MAX_FRAME);
num_buffers = max_t(unsigned int, *count, q->min_buffers_needed);
- num_buffers = min_t(unsigned int, num_buffers, VB2_MAX_FRAME);
+ num_buffers = min_t(unsigned int, num_buffers, q->max_num_buffers);
memset(q->alloc_devs, 0, sizeof(q->alloc_devs));
/*
* Set this now to ensure that drivers see the correct q->memory value
* in the queue_setup op.
*/
mutex_lock(&q->mmap_lock);
+ if (!q->bufs)
+ q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
+ if (!q->bufs)
+ ret = -ENOMEM;
q->memory = memory;
mutex_unlock(&q->mmap_lock);
+ if (ret)
+ return ret;
set_queue_coherency(q, non_coherent_mem);
/*
@@ -976,7 +981,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
bool no_previous_buffers = !q_num_bufs;
int ret = 0;
- if (q_num_bufs == VB2_MAX_FRAME) {
+ if (q->num_buffers == q->max_num_buffers) {
dprintk(q, 1, "maximum number of buffers already allocated\n");
return -ENOBUFS;
}
@@ -993,7 +998,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
*/
mutex_lock(&q->mmap_lock);
q->memory = memory;
+ if (!q->bufs)
+ q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
+ if (!q->bufs)
+ ret = -ENOMEM;
mutex_unlock(&q->mmap_lock);
+ if (ret)
+ return ret;
q->waiting_for_buffers = !q->is_output;
set_queue_coherency(q, non_coherent_mem);
} else {
@@ -1005,7 +1016,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
return -EINVAL;
}
- num_buffers = min(*count, VB2_MAX_FRAME - q_num_bufs);
+ num_buffers = min(*count, q->max_num_buffers - q_num_bufs);
if (requested_planes && requested_sizes) {
num_planes = requested_planes;
@@ -2465,6 +2476,12 @@ int vb2_core_queue_init(struct vb2_queue *q)
/*
* Sanity check
*/
+ if (!q->max_num_buffers)
+ q->max_num_buffers = VB2_MAX_FRAME;
+
+ /* The maximum is limited by offset cookie encoding pattern */
+ q->max_num_buffers = min_t(unsigned int, q->max_num_buffers, MAX_BUFFER_INDEX);
+
if (WARN_ON(!q) ||
WARN_ON(!q->ops) ||
WARN_ON(!q->mem_ops) ||
@@ -2474,6 +2491,10 @@ int vb2_core_queue_init(struct vb2_queue *q)
WARN_ON(!q->ops->buf_queue))
return -EINVAL;
+ if (WARN_ON(q->max_num_buffers > MAX_BUFFER_INDEX) ||
+ WARN_ON(q->min_buffers_needed > q->max_num_buffers))
+ return -EINVAL;
+
if (WARN_ON(q->requires_requests && !q->supports_requests))
return -EINVAL;
@@ -2519,7 +2540,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
__vb2_cleanup_fileio(q);
__vb2_queue_cancel(q);
mutex_lock(&q->mmap_lock);
- __vb2_queue_free(q, vb2_get_num_buffers(q));
+ __vb2_queue_free(q, q->max_num_buffers);
+ kfree(q->bufs);
+ q->bufs = NULL;
q->num_buffers = 0;
mutex_unlock(&q->mmap_lock);
}
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index 7d798fb15c0b..f3cf4b235c1f 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -627,7 +627,7 @@ struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp)
* This loop doesn't scale if there is a really large number of buffers.
* Maybe something more efficient will be needed in this case.
*/
- for (i = 0; i < vb2_get_num_buffers(q); i++) {
+ for (i = 0; i < q->max_num_buffers; i++) {
vb2 = vb2_get_buffer(q, i);
if (!vb2)
@@ -1142,7 +1142,7 @@ int _vb2_fop_release(struct file *file, struct mutex *lock)
if (lock)
mutex_lock(lock);
- if (file->private_data == vdev->queue->owner) {
+ if (!vdev->queue->owner || file->private_data == vdev->queue->owner) {
vb2_queue_release(vdev->queue);
vdev->queue->owner = NULL;
}
@@ -1270,7 +1270,7 @@ void vb2_video_unregister_device(struct video_device *vdev)
*/
get_device(&vdev->dev);
video_unregister_device(vdev);
- if (vdev->queue && vdev->queue->owner) {
+ if (vdev->queue) {
struct mutex *lock = vdev->queue->lock ?
vdev->queue->lock : vdev->lock;
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 8f9d9e4af5b1..e77a397195f2 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -558,6 +558,7 @@ struct vb2_buf_ops {
* @dma_dir: DMA mapping direction.
* @bufs: videobuf2 buffer structures
* @num_buffers: number of allocated/used buffers
+ * @max_num_buffers: upper limit of number of allocated/used buffers
* @queued_list: list of buffers currently queued from userspace
* @queued_count: number of buffers queued and ready for streaming.
* @owned_by_drv_count: number of buffers owned by the driver
@@ -619,8 +620,9 @@ struct vb2_queue {
struct mutex mmap_lock;
unsigned int memory;
enum dma_data_direction dma_dir;
- struct vb2_buffer *bufs[VB2_MAX_FRAME];
+ struct vb2_buffer **bufs;
unsigned int num_buffers;
+ unsigned int max_num_buffers;
struct list_head queued_list;
unsigned int queued_count;
@@ -1248,6 +1250,12 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
unsigned int index)
{
+ if (!q->bufs)
+ return NULL;
+
+ if (index >= q->max_num_buffers)
+ return NULL;
+
if (index < q->num_buffers)
return q->bufs[index];
return NULL;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 44/56] media: core: Report the maximum possible number of buffers for the queue
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use one of the struct v4l2_create_buffers reserved bytes to report
the maximum possible number of buffers for the queue.
V4l2 framework set V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS flags in queue
capabilities so userland can know when the field is valid.
Does the same change in v4l2_create_buffers32 structure.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../userspace-api/media/v4l/vidioc-create-bufs.rst | 8 ++++++--
Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst | 1 +
drivers/media/common/videobuf2/videobuf2-v4l2.c | 2 ++
drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 9 ++++++++-
drivers/media/v4l2-core/v4l2-ioctl.c | 4 ++--
include/uapi/linux/videodev2.h | 7 ++++++-
6 files changed, 25 insertions(+), 6 deletions(-)
diff --git a/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
index a048a9f6b7b6..49232c9006c2 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
@@ -116,9 +116,13 @@ than the number requested.
- ``flags``
- Specifies additional buffer management attributes.
See :ref:`memory-flags`.
-
* - __u32
- - ``reserved``\ [6]
+ - ``max_num_buffers``
+ - If the V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
+ this field indicates the maximum possible number of buffers
+ for this queue.
+ * - __u32
+ - ``reserved``\ [5]
- A place holder for future extensions. Drivers and applications
must set the array to zero.
diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
index 099fa6695167..0b3a41a45d05 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
@@ -120,6 +120,7 @@ aborting or finishing any DMA in progress, an implicit
.. _V4L2-BUF-CAP-SUPPORTS-ORPHANED-BUFS:
.. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
.. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
+.. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
.. raw:: latex
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index f3cf4b235c1f..bdfc3a253c65 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -762,6 +762,8 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
fill_buf_caps(q, &create->capabilities);
validate_memory_flags(q, create->memory, &create->flags);
create->index = vb2_get_num_buffers(q);
+ create->max_num_buffers = q->max_num_buffers;
+ create->capabilities |= V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS;
if (create->count == 0)
return ret != -EBUSY ? ret : 0;
diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
index f3bed37859a2..5aac5cf780b3 100644
--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
@@ -116,6 +116,9 @@ struct v4l2_format32 {
* @flags: additional buffer management attributes (ignored unless the
* queue has V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS capability and
* configured for MMAP streaming I/O).
+ * @max_num_buffers: if V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
+ * this field indicate the maximum possible number of buffers
+ * for this queue.
* @reserved: future extensions
*/
struct v4l2_create_buffers32 {
@@ -125,7 +128,8 @@ struct v4l2_create_buffers32 {
struct v4l2_format32 format;
__u32 capabilities;
__u32 flags;
- __u32 reserved[6];
+ __u32 max_num_buffers;
+ __u32 reserved[5];
};
static int get_v4l2_format32(struct v4l2_format *p64,
@@ -175,6 +179,8 @@ static int get_v4l2_create32(struct v4l2_create_buffers *p64,
return -EFAULT;
if (copy_from_user(&p64->flags, &p32->flags, sizeof(p32->flags)))
return -EFAULT;
+ if (copy_from_user(&p64->max_num_buffers, &p32->max_num_buffers, sizeof(p32->max_num_buffers)))
+ return -EFAULT;
return get_v4l2_format32(&p64->format, &p32->format);
}
@@ -221,6 +227,7 @@ static int put_v4l2_create32(struct v4l2_create_buffers *p64,
offsetof(struct v4l2_create_buffers32, format)) ||
put_user(p64->capabilities, &p32->capabilities) ||
put_user(p64->flags, &p32->flags) ||
+ put_user(p64->max_num_buffers, &p32->max_num_buffers) ||
copy_to_user(p32->reserved, p64->reserved, sizeof(p64->reserved)))
return -EFAULT;
return put_v4l2_format32(&p64->format, &p32->format);
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 9b1de54ce379..4d90424cbfc4 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -483,9 +483,9 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
{
const struct v4l2_create_buffers *p = arg;
- pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, ",
+ pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, max num buffers=%u",
p->index, p->count, prt_names(p->memory, v4l2_memory_names),
- p->capabilities);
+ p->capabilities, p->max_num_buffers);
v4l_print_format(&p->format, write_only);
}
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index c3d4e490ce7c..13ddb5abf584 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1035,6 +1035,7 @@ struct v4l2_requestbuffers {
#define V4L2_BUF_CAP_SUPPORTS_ORPHANED_BUFS (1 << 4)
#define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
#define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
+#define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
/**
* struct v4l2_plane - plane info for multi-planar buffers
@@ -2605,6 +2606,9 @@ struct v4l2_dbg_chip_info {
* @flags: additional buffer management attributes (ignored unless the
* queue has V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS capability
* and configured for MMAP streaming I/O).
+ * @max_num_buffers: if V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
+ * this field indicate the maximum possible number of buffers
+ * for this queue.
* @reserved: future extensions
*/
struct v4l2_create_buffers {
@@ -2614,7 +2618,8 @@ struct v4l2_create_buffers {
struct v4l2_format format;
__u32 capabilities;
__u32 flags;
- __u32 reserved[6];
+ __u32 max_num_buffers;
+ __u32 reserved[5];
};
/*
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 44/56] media: core: Report the maximum possible number of buffers for the queue
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use one of the struct v4l2_create_buffers reserved bytes to report
the maximum possible number of buffers for the queue.
V4l2 framework set V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS flags in queue
capabilities so userland can know when the field is valid.
Does the same change in v4l2_create_buffers32 structure.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../userspace-api/media/v4l/vidioc-create-bufs.rst | 8 ++++++--
Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst | 1 +
drivers/media/common/videobuf2/videobuf2-v4l2.c | 2 ++
drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 9 ++++++++-
drivers/media/v4l2-core/v4l2-ioctl.c | 4 ++--
include/uapi/linux/videodev2.h | 7 ++++++-
6 files changed, 25 insertions(+), 6 deletions(-)
diff --git a/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
index a048a9f6b7b6..49232c9006c2 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
@@ -116,9 +116,13 @@ than the number requested.
- ``flags``
- Specifies additional buffer management attributes.
See :ref:`memory-flags`.
-
* - __u32
- - ``reserved``\ [6]
+ - ``max_num_buffers``
+ - If the V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
+ this field indicates the maximum possible number of buffers
+ for this queue.
+ * - __u32
+ - ``reserved``\ [5]
- A place holder for future extensions. Drivers and applications
must set the array to zero.
diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
index 099fa6695167..0b3a41a45d05 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
@@ -120,6 +120,7 @@ aborting or finishing any DMA in progress, an implicit
.. _V4L2-BUF-CAP-SUPPORTS-ORPHANED-BUFS:
.. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
.. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
+.. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
.. raw:: latex
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index f3cf4b235c1f..bdfc3a253c65 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -762,6 +762,8 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
fill_buf_caps(q, &create->capabilities);
validate_memory_flags(q, create->memory, &create->flags);
create->index = vb2_get_num_buffers(q);
+ create->max_num_buffers = q->max_num_buffers;
+ create->capabilities |= V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS;
if (create->count == 0)
return ret != -EBUSY ? ret : 0;
diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
index f3bed37859a2..5aac5cf780b3 100644
--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
@@ -116,6 +116,9 @@ struct v4l2_format32 {
* @flags: additional buffer management attributes (ignored unless the
* queue has V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS capability and
* configured for MMAP streaming I/O).
+ * @max_num_buffers: if V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
+ * this field indicate the maximum possible number of buffers
+ * for this queue.
* @reserved: future extensions
*/
struct v4l2_create_buffers32 {
@@ -125,7 +128,8 @@ struct v4l2_create_buffers32 {
struct v4l2_format32 format;
__u32 capabilities;
__u32 flags;
- __u32 reserved[6];
+ __u32 max_num_buffers;
+ __u32 reserved[5];
};
static int get_v4l2_format32(struct v4l2_format *p64,
@@ -175,6 +179,8 @@ static int get_v4l2_create32(struct v4l2_create_buffers *p64,
return -EFAULT;
if (copy_from_user(&p64->flags, &p32->flags, sizeof(p32->flags)))
return -EFAULT;
+ if (copy_from_user(&p64->max_num_buffers, &p32->max_num_buffers, sizeof(p32->max_num_buffers)))
+ return -EFAULT;
return get_v4l2_format32(&p64->format, &p32->format);
}
@@ -221,6 +227,7 @@ static int put_v4l2_create32(struct v4l2_create_buffers *p64,
offsetof(struct v4l2_create_buffers32, format)) ||
put_user(p64->capabilities, &p32->capabilities) ||
put_user(p64->flags, &p32->flags) ||
+ put_user(p64->max_num_buffers, &p32->max_num_buffers) ||
copy_to_user(p32->reserved, p64->reserved, sizeof(p64->reserved)))
return -EFAULT;
return put_v4l2_format32(&p64->format, &p32->format);
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 9b1de54ce379..4d90424cbfc4 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -483,9 +483,9 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
{
const struct v4l2_create_buffers *p = arg;
- pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, ",
+ pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, max num buffers=%u",
p->index, p->count, prt_names(p->memory, v4l2_memory_names),
- p->capabilities);
+ p->capabilities, p->max_num_buffers);
v4l_print_format(&p->format, write_only);
}
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index c3d4e490ce7c..13ddb5abf584 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1035,6 +1035,7 @@ struct v4l2_requestbuffers {
#define V4L2_BUF_CAP_SUPPORTS_ORPHANED_BUFS (1 << 4)
#define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
#define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
+#define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
/**
* struct v4l2_plane - plane info for multi-planar buffers
@@ -2605,6 +2606,9 @@ struct v4l2_dbg_chip_info {
* @flags: additional buffer management attributes (ignored unless the
* queue has V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS capability
* and configured for MMAP streaming I/O).
+ * @max_num_buffers: if V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
+ * this field indicate the maximum possible number of buffers
+ * for this queue.
* @reserved: future extensions
*/
struct v4l2_create_buffers {
@@ -2614,7 +2618,8 @@ struct v4l2_create_buffers {
struct v4l2_format format;
__u32 capabilities;
__u32 flags;
- __u32 reserved[6];
+ __u32 max_num_buffers;
+ __u32 reserved[5];
};
/*
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 44/56] media: core: Report the maximum possible number of buffers for the queue
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Use one of the struct v4l2_create_buffers reserved bytes to report
the maximum possible number of buffers for the queue.
V4l2 framework set V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS flags in queue
capabilities so userland can know when the field is valid.
Does the same change in v4l2_create_buffers32 structure.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../userspace-api/media/v4l/vidioc-create-bufs.rst | 8 ++++++--
Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst | 1 +
drivers/media/common/videobuf2/videobuf2-v4l2.c | 2 ++
drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 9 ++++++++-
drivers/media/v4l2-core/v4l2-ioctl.c | 4 ++--
include/uapi/linux/videodev2.h | 7 ++++++-
6 files changed, 25 insertions(+), 6 deletions(-)
diff --git a/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
index a048a9f6b7b6..49232c9006c2 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
@@ -116,9 +116,13 @@ than the number requested.
- ``flags``
- Specifies additional buffer management attributes.
See :ref:`memory-flags`.
-
* - __u32
- - ``reserved``\ [6]
+ - ``max_num_buffers``
+ - If the V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
+ this field indicates the maximum possible number of buffers
+ for this queue.
+ * - __u32
+ - ``reserved``\ [5]
- A place holder for future extensions. Drivers and applications
must set the array to zero.
diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
index 099fa6695167..0b3a41a45d05 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
@@ -120,6 +120,7 @@ aborting or finishing any DMA in progress, an implicit
.. _V4L2-BUF-CAP-SUPPORTS-ORPHANED-BUFS:
.. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
.. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
+.. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
.. raw:: latex
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index f3cf4b235c1f..bdfc3a253c65 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -762,6 +762,8 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
fill_buf_caps(q, &create->capabilities);
validate_memory_flags(q, create->memory, &create->flags);
create->index = vb2_get_num_buffers(q);
+ create->max_num_buffers = q->max_num_buffers;
+ create->capabilities |= V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS;
if (create->count == 0)
return ret != -EBUSY ? ret : 0;
diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
index f3bed37859a2..5aac5cf780b3 100644
--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
@@ -116,6 +116,9 @@ struct v4l2_format32 {
* @flags: additional buffer management attributes (ignored unless the
* queue has V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS capability and
* configured for MMAP streaming I/O).
+ * @max_num_buffers: if V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
+ * this field indicate the maximum possible number of buffers
+ * for this queue.
* @reserved: future extensions
*/
struct v4l2_create_buffers32 {
@@ -125,7 +128,8 @@ struct v4l2_create_buffers32 {
struct v4l2_format32 format;
__u32 capabilities;
__u32 flags;
- __u32 reserved[6];
+ __u32 max_num_buffers;
+ __u32 reserved[5];
};
static int get_v4l2_format32(struct v4l2_format *p64,
@@ -175,6 +179,8 @@ static int get_v4l2_create32(struct v4l2_create_buffers *p64,
return -EFAULT;
if (copy_from_user(&p64->flags, &p32->flags, sizeof(p32->flags)))
return -EFAULT;
+ if (copy_from_user(&p64->max_num_buffers, &p32->max_num_buffers, sizeof(p32->max_num_buffers)))
+ return -EFAULT;
return get_v4l2_format32(&p64->format, &p32->format);
}
@@ -221,6 +227,7 @@ static int put_v4l2_create32(struct v4l2_create_buffers *p64,
offsetof(struct v4l2_create_buffers32, format)) ||
put_user(p64->capabilities, &p32->capabilities) ||
put_user(p64->flags, &p32->flags) ||
+ put_user(p64->max_num_buffers, &p32->max_num_buffers) ||
copy_to_user(p32->reserved, p64->reserved, sizeof(p64->reserved)))
return -EFAULT;
return put_v4l2_format32(&p64->format, &p32->format);
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 9b1de54ce379..4d90424cbfc4 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -483,9 +483,9 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
{
const struct v4l2_create_buffers *p = arg;
- pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, ",
+ pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, max num buffers=%u",
p->index, p->count, prt_names(p->memory, v4l2_memory_names),
- p->capabilities);
+ p->capabilities, p->max_num_buffers);
v4l_print_format(&p->format, write_only);
}
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index c3d4e490ce7c..13ddb5abf584 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1035,6 +1035,7 @@ struct v4l2_requestbuffers {
#define V4L2_BUF_CAP_SUPPORTS_ORPHANED_BUFS (1 << 4)
#define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
#define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
+#define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
/**
* struct v4l2_plane - plane info for multi-planar buffers
@@ -2605,6 +2606,9 @@ struct v4l2_dbg_chip_info {
* @flags: additional buffer management attributes (ignored unless the
* queue has V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS capability
* and configured for MMAP streaming I/O).
+ * @max_num_buffers: if V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
+ * this field indicate the maximum possible number of buffers
+ * for this queue.
* @reserved: future extensions
*/
struct v4l2_create_buffers {
@@ -2614,7 +2618,8 @@ struct v4l2_create_buffers {
struct v4l2_format format;
__u32 capabilities;
__u32 flags;
- __u32 reserved[6];
+ __u32 max_num_buffers;
+ __u32 reserved[5];
};
/*
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 45/56] media: test-drivers: vivid: Increase max supported buffers for capture queues
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Change the maximum number of buffers of some capture queues in order
to test max_num_buffers field.
Allow to allocate up to:
- 64 buffers for video capture queue.
- 1024 buffers for sdr capture queue.
- 32768 buffers for vbi capture queue.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/test-drivers/vivid/vivid-core.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/media/test-drivers/vivid/vivid-core.c b/drivers/media/test-drivers/vivid/vivid-core.c
index 394c9f81ea72..353f035fcd19 100644
--- a/drivers/media/test-drivers/vivid/vivid-core.c
+++ b/drivers/media/test-drivers/vivid/vivid-core.c
@@ -876,6 +876,20 @@ static int vivid_create_queue(struct vivid_dev *dev,
q->type = buf_type;
q->io_modes = VB2_MMAP | VB2_DMABUF;
q->io_modes |= V4L2_TYPE_IS_OUTPUT(buf_type) ? VB2_WRITE : VB2_READ;
+
+ /*
+ * The maximum number of buffers is 32768 if PAGE_SHIFT == 12,
+ * see also MAX_BUFFER_INDEX in videobuf2-core.c. It will be less if
+ * PAGE_SHIFT > 12, but then max_num_buffers will be clamped by
+ * videobuf2-core.c to MAX_BUFFER_INDEX.
+ */
+ if (buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ q->max_num_buffers = 64;
+ if (buf_type == V4L2_BUF_TYPE_SDR_CAPTURE)
+ q->max_num_buffers = 1024;
+ if (buf_type == V4L2_BUF_TYPE_VBI_CAPTURE)
+ q->max_num_buffers = 32768;
+
if (allocators[dev->inst] != 1)
q->io_modes |= VB2_USERPTR;
q->drv_priv = dev;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 45/56] media: test-drivers: vivid: Increase max supported buffers for capture queues
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Change the maximum number of buffers of some capture queues in order
to test max_num_buffers field.
Allow to allocate up to:
- 64 buffers for video capture queue.
- 1024 buffers for sdr capture queue.
- 32768 buffers for vbi capture queue.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/test-drivers/vivid/vivid-core.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/media/test-drivers/vivid/vivid-core.c b/drivers/media/test-drivers/vivid/vivid-core.c
index 394c9f81ea72..353f035fcd19 100644
--- a/drivers/media/test-drivers/vivid/vivid-core.c
+++ b/drivers/media/test-drivers/vivid/vivid-core.c
@@ -876,6 +876,20 @@ static int vivid_create_queue(struct vivid_dev *dev,
q->type = buf_type;
q->io_modes = VB2_MMAP | VB2_DMABUF;
q->io_modes |= V4L2_TYPE_IS_OUTPUT(buf_type) ? VB2_WRITE : VB2_READ;
+
+ /*
+ * The maximum number of buffers is 32768 if PAGE_SHIFT == 12,
+ * see also MAX_BUFFER_INDEX in videobuf2-core.c. It will be less if
+ * PAGE_SHIFT > 12, but then max_num_buffers will be clamped by
+ * videobuf2-core.c to MAX_BUFFER_INDEX.
+ */
+ if (buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ q->max_num_buffers = 64;
+ if (buf_type == V4L2_BUF_TYPE_SDR_CAPTURE)
+ q->max_num_buffers = 1024;
+ if (buf_type == V4L2_BUF_TYPE_VBI_CAPTURE)
+ q->max_num_buffers = 32768;
+
if (allocators[dev->inst] != 1)
q->io_modes |= VB2_USERPTR;
q->drv_priv = dev;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 45/56] media: test-drivers: vivid: Increase max supported buffers for capture queues
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Change the maximum number of buffers of some capture queues in order
to test max_num_buffers field.
Allow to allocate up to:
- 64 buffers for video capture queue.
- 1024 buffers for sdr capture queue.
- 32768 buffers for vbi capture queue.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/test-drivers/vivid/vivid-core.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/media/test-drivers/vivid/vivid-core.c b/drivers/media/test-drivers/vivid/vivid-core.c
index 394c9f81ea72..353f035fcd19 100644
--- a/drivers/media/test-drivers/vivid/vivid-core.c
+++ b/drivers/media/test-drivers/vivid/vivid-core.c
@@ -876,6 +876,20 @@ static int vivid_create_queue(struct vivid_dev *dev,
q->type = buf_type;
q->io_modes = VB2_MMAP | VB2_DMABUF;
q->io_modes |= V4L2_TYPE_IS_OUTPUT(buf_type) ? VB2_WRITE : VB2_READ;
+
+ /*
+ * The maximum number of buffers is 32768 if PAGE_SHIFT == 12,
+ * see also MAX_BUFFER_INDEX in videobuf2-core.c. It will be less if
+ * PAGE_SHIFT > 12, but then max_num_buffers will be clamped by
+ * videobuf2-core.c to MAX_BUFFER_INDEX.
+ */
+ if (buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ q->max_num_buffers = 64;
+ if (buf_type == V4L2_BUF_TYPE_SDR_CAPTURE)
+ q->max_num_buffers = 1024;
+ if (buf_type == V4L2_BUF_TYPE_VBI_CAPTURE)
+ q->max_num_buffers = 32768;
+
if (allocators[dev->inst] != 1)
q->io_modes |= VB2_USERPTR;
q->drv_priv = dev;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 46/56] media: test-drivers: vicodec: Increase max supported capture queue buffers
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Allow to allocated up to 64 buffers on capture queue.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/test-drivers/vicodec/vicodec-core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
index 6f0e20df74e9..69cbe2c094e1 100644
--- a/drivers/media/test-drivers/vicodec/vicodec-core.c
+++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
@@ -1718,6 +1718,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
V4L2_BUF_TYPE_VIDEO_CAPTURE);
dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
+ dst_vq->max_num_buffers = 64;
dst_vq->drv_priv = ctx;
dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
dst_vq->ops = &vicodec_qops;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 46/56] media: test-drivers: vicodec: Increase max supported capture queue buffers
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Allow to allocated up to 64 buffers on capture queue.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/test-drivers/vicodec/vicodec-core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
index 6f0e20df74e9..69cbe2c094e1 100644
--- a/drivers/media/test-drivers/vicodec/vicodec-core.c
+++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
@@ -1718,6 +1718,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
V4L2_BUF_TYPE_VIDEO_CAPTURE);
dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
+ dst_vq->max_num_buffers = 64;
dst_vq->drv_priv = ctx;
dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
dst_vq->ops = &vicodec_qops;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 46/56] media: test-drivers: vicodec: Increase max supported capture queue buffers
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Allow to allocated up to 64 buffers on capture queue.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/test-drivers/vicodec/vicodec-core.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
index 6f0e20df74e9..69cbe2c094e1 100644
--- a/drivers/media/test-drivers/vicodec/vicodec-core.c
+++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
@@ -1718,6 +1718,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
V4L2_BUF_TYPE_VIDEO_CAPTURE);
dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
+ dst_vq->max_num_buffers = 64;
dst_vq->drv_priv = ctx;
dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
dst_vq->ops = &vicodec_qops;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 47/56] media: verisilicon: Refactor postprocessor to store more buffers
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Since vb2 queue can store more than VB2_MAX_FRAME buffers, the
postprocessor buffer storage must be capable to store more buffers too.
Change static dec_q array to allocated array to be capable to store
up to queue 'max_num_buffers'.
Keep allocating queue 'num_buffers' at queue setup time but also allows
to allocate postprocessors buffers on the fly.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
drivers/media/platform/verisilicon/hantro.h | 7 +-
.../media/platform/verisilicon/hantro_drv.c | 4 +-
.../media/platform/verisilicon/hantro_hw.h | 4 +-
.../platform/verisilicon/hantro_postproc.c | 93 +++++++++++++++----
.../media/platform/verisilicon/hantro_v4l2.c | 2 +-
5 files changed, 85 insertions(+), 25 deletions(-)
diff --git a/drivers/media/platform/verisilicon/hantro.h b/drivers/media/platform/verisilicon/hantro.h
index 77aee9489516..0948b04a9f8d 100644
--- a/drivers/media/platform/verisilicon/hantro.h
+++ b/drivers/media/platform/verisilicon/hantro.h
@@ -469,11 +469,14 @@ hantro_get_dst_buf(struct hantro_ctx *ctx)
bool hantro_needs_postproc(const struct hantro_ctx *ctx,
const struct hantro_fmt *fmt);
+dma_addr_t
+hantro_postproc_get_dec_buf_addr(struct hantro_ctx *ctx, int index);
+
static inline dma_addr_t
hantro_get_dec_buf_addr(struct hantro_ctx *ctx, struct vb2_buffer *vb)
{
if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt))
- return ctx->postproc.dec_q[vb->index].dma;
+ return hantro_postproc_get_dec_buf_addr(ctx, vb->index);
return vb2_dma_contig_plane_dma_addr(vb, 0);
}
@@ -485,8 +488,8 @@ vb2_to_hantro_decoded_buf(struct vb2_buffer *buf)
void hantro_postproc_disable(struct hantro_ctx *ctx);
void hantro_postproc_enable(struct hantro_ctx *ctx);
+int hantro_postproc_init(struct hantro_ctx *ctx);
void hantro_postproc_free(struct hantro_ctx *ctx);
-int hantro_postproc_alloc(struct hantro_ctx *ctx);
int hanto_postproc_enum_framesizes(struct hantro_ctx *ctx,
struct v4l2_frmsizeenum *fsize);
diff --git a/drivers/media/platform/verisilicon/hantro_drv.c b/drivers/media/platform/verisilicon/hantro_drv.c
index a9fa05ac56a9..7f5b82eb6649 100644
--- a/drivers/media/platform/verisilicon/hantro_drv.c
+++ b/drivers/media/platform/verisilicon/hantro_drv.c
@@ -235,8 +235,10 @@ queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
* The Kernel needs access to the JPEG destination buffer for the
* JPEG encoder to fill in the JPEG headers.
*/
- if (!ctx->is_encoder)
+ if (!ctx->is_encoder) {
dst_vq->dma_attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
+ dst_vq->max_num_buffers = MAX_POSTPROC_BUFFERS;
+ }
dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
diff --git a/drivers/media/platform/verisilicon/hantro_hw.h b/drivers/media/platform/verisilicon/hantro_hw.h
index 7f33f7b07ce4..292a76ef643e 100644
--- a/drivers/media/platform/verisilicon/hantro_hw.h
+++ b/drivers/media/platform/verisilicon/hantro_hw.h
@@ -40,6 +40,8 @@
#define AV1_MAX_FRAME_BUF_COUNT (V4L2_AV1_TOTAL_REFS_PER_FRAME + 1)
+#define MAX_POSTPROC_BUFFERS 64
+
struct hantro_dev;
struct hantro_ctx;
struct hantro_buf;
@@ -336,7 +338,7 @@ struct hantro_av1_dec_hw_ctx {
* @dec_q: References buffers, in decoder format.
*/
struct hantro_postproc_ctx {
- struct hantro_aux_buf dec_q[VB2_MAX_FRAME];
+ struct hantro_aux_buf dec_q[MAX_POSTPROC_BUFFERS];
};
/**
diff --git a/drivers/media/platform/verisilicon/hantro_postproc.c b/drivers/media/platform/verisilicon/hantro_postproc.c
index 8f8f17e671ce..41e93176300b 100644
--- a/drivers/media/platform/verisilicon/hantro_postproc.c
+++ b/drivers/media/platform/verisilicon/hantro_postproc.c
@@ -177,9 +177,11 @@ static int hantro_postproc_g2_enum_framesizes(struct hantro_ctx *ctx,
void hantro_postproc_free(struct hantro_ctx *ctx)
{
struct hantro_dev *vpu = ctx->dev;
+ struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
+ struct vb2_queue *queue = &m2m_ctx->cap_q_ctx.q;
unsigned int i;
- for (i = 0; i < VB2_MAX_FRAME; ++i) {
+ for (i = 0; i < queue->max_num_buffers; ++i) {
struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
if (priv->cpu) {
@@ -190,20 +192,17 @@ void hantro_postproc_free(struct hantro_ctx *ctx)
}
}
-int hantro_postproc_alloc(struct hantro_ctx *ctx)
+static unsigned int hantro_postproc_buffer_size(struct hantro_ctx *ctx)
{
- struct hantro_dev *vpu = ctx->dev;
- struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
- struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
- unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
struct v4l2_pix_format_mplane pix_mp;
const struct hantro_fmt *fmt;
- unsigned int i, buf_size;
+ unsigned int buf_size;
/* this should always pick native format */
fmt = hantro_get_default_fmt(ctx, false, ctx->bit_depth, HANTRO_AUTO_POSTPROC);
if (!fmt)
- return -EINVAL;
+ return 0;
+
v4l2_fill_pixfmt_mp(&pix_mp, fmt->fourcc, ctx->src_fmt.width,
ctx->src_fmt.height);
@@ -221,23 +220,77 @@ int hantro_postproc_alloc(struct hantro_ctx *ctx)
buf_size += hantro_av1_mv_size(pix_mp.width,
pix_mp.height);
- for (i = 0; i < num_buffers; ++i) {
- struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
+ return buf_size;
+}
+
+static int hantro_postproc_alloc(struct hantro_ctx *ctx, int index)
+{
+ struct hantro_dev *vpu = ctx->dev;
+ struct hantro_aux_buf *priv = &ctx->postproc.dec_q[index];
+ unsigned int buf_size = hantro_postproc_buffer_size(ctx);
+
+ if (!buf_size)
+ return -EINVAL;
+
+ /*
+ * The buffers on this queue are meant as intermediate
+ * buffers for the decoder, so no mapping is needed.
+ */
+ priv->attrs = DMA_ATTR_NO_KERNEL_MAPPING;
+ priv->cpu = dma_alloc_attrs(vpu->dev, buf_size, &priv->dma,
+ GFP_KERNEL, priv->attrs);
+ if (!priv->cpu)
+ return -ENOMEM;
+ priv->size = buf_size;
+
+ return 0;
+}
- /*
- * The buffers on this queue are meant as intermediate
- * buffers for the decoder, so no mapping is needed.
- */
- priv->attrs = DMA_ATTR_NO_KERNEL_MAPPING;
- priv->cpu = dma_alloc_attrs(vpu->dev, buf_size, &priv->dma,
- GFP_KERNEL, priv->attrs);
- if (!priv->cpu)
- return -ENOMEM;
- priv->size = buf_size;
+int hantro_postproc_init(struct hantro_ctx *ctx)
+{
+ struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
+ struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
+ unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
+ unsigned int i;
+ int ret;
+
+ for (i = 0; i < num_buffers; i++) {
+ ret = hantro_postproc_alloc(ctx, i);
+ if (ret)
+ return ret;
}
+
return 0;
}
+dma_addr_t
+hantro_postproc_get_dec_buf_addr(struct hantro_ctx *ctx, int index)
+{
+ struct hantro_aux_buf *priv = &ctx->postproc.dec_q[index];
+ unsigned int buf_size = hantro_postproc_buffer_size(ctx);
+ struct hantro_dev *vpu = ctx->dev;
+ int ret;
+
+ if (priv->size < buf_size && priv->cpu) {
+ /* buffer is too small, release it */
+ dma_free_attrs(vpu->dev, priv->size, priv->cpu,
+ priv->dma, priv->attrs);
+ priv->cpu = NULL;
+ }
+
+ if (!priv->cpu) {
+ /* buffer not already allocated, try getting a new one */
+ ret = hantro_postproc_alloc(ctx, index);
+ if (ret)
+ return 0;
+ }
+
+ if (!priv->cpu)
+ return 0;
+
+ return priv->dma;
+}
+
static void hantro_postproc_g1_disable(struct hantro_ctx *ctx)
{
struct hantro_dev *vpu = ctx->dev;
diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
index b3ae037a50f6..f0d8b165abcd 100644
--- a/drivers/media/platform/verisilicon/hantro_v4l2.c
+++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
@@ -933,7 +933,7 @@ static int hantro_start_streaming(struct vb2_queue *q, unsigned int count)
}
if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt)) {
- ret = hantro_postproc_alloc(ctx);
+ ret = hantro_postproc_init(ctx);
if (ret)
goto err_codec_exit;
}
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 47/56] media: verisilicon: Refactor postprocessor to store more buffers
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Since vb2 queue can store more than VB2_MAX_FRAME buffers, the
postprocessor buffer storage must be capable to store more buffers too.
Change static dec_q array to allocated array to be capable to store
up to queue 'max_num_buffers'.
Keep allocating queue 'num_buffers' at queue setup time but also allows
to allocate postprocessors buffers on the fly.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
drivers/media/platform/verisilicon/hantro.h | 7 +-
.../media/platform/verisilicon/hantro_drv.c | 4 +-
.../media/platform/verisilicon/hantro_hw.h | 4 +-
.../platform/verisilicon/hantro_postproc.c | 93 +++++++++++++++----
.../media/platform/verisilicon/hantro_v4l2.c | 2 +-
5 files changed, 85 insertions(+), 25 deletions(-)
diff --git a/drivers/media/platform/verisilicon/hantro.h b/drivers/media/platform/verisilicon/hantro.h
index 77aee9489516..0948b04a9f8d 100644
--- a/drivers/media/platform/verisilicon/hantro.h
+++ b/drivers/media/platform/verisilicon/hantro.h
@@ -469,11 +469,14 @@ hantro_get_dst_buf(struct hantro_ctx *ctx)
bool hantro_needs_postproc(const struct hantro_ctx *ctx,
const struct hantro_fmt *fmt);
+dma_addr_t
+hantro_postproc_get_dec_buf_addr(struct hantro_ctx *ctx, int index);
+
static inline dma_addr_t
hantro_get_dec_buf_addr(struct hantro_ctx *ctx, struct vb2_buffer *vb)
{
if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt))
- return ctx->postproc.dec_q[vb->index].dma;
+ return hantro_postproc_get_dec_buf_addr(ctx, vb->index);
return vb2_dma_contig_plane_dma_addr(vb, 0);
}
@@ -485,8 +488,8 @@ vb2_to_hantro_decoded_buf(struct vb2_buffer *buf)
void hantro_postproc_disable(struct hantro_ctx *ctx);
void hantro_postproc_enable(struct hantro_ctx *ctx);
+int hantro_postproc_init(struct hantro_ctx *ctx);
void hantro_postproc_free(struct hantro_ctx *ctx);
-int hantro_postproc_alloc(struct hantro_ctx *ctx);
int hanto_postproc_enum_framesizes(struct hantro_ctx *ctx,
struct v4l2_frmsizeenum *fsize);
diff --git a/drivers/media/platform/verisilicon/hantro_drv.c b/drivers/media/platform/verisilicon/hantro_drv.c
index a9fa05ac56a9..7f5b82eb6649 100644
--- a/drivers/media/platform/verisilicon/hantro_drv.c
+++ b/drivers/media/platform/verisilicon/hantro_drv.c
@@ -235,8 +235,10 @@ queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
* The Kernel needs access to the JPEG destination buffer for the
* JPEG encoder to fill in the JPEG headers.
*/
- if (!ctx->is_encoder)
+ if (!ctx->is_encoder) {
dst_vq->dma_attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
+ dst_vq->max_num_buffers = MAX_POSTPROC_BUFFERS;
+ }
dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
diff --git a/drivers/media/platform/verisilicon/hantro_hw.h b/drivers/media/platform/verisilicon/hantro_hw.h
index 7f33f7b07ce4..292a76ef643e 100644
--- a/drivers/media/platform/verisilicon/hantro_hw.h
+++ b/drivers/media/platform/verisilicon/hantro_hw.h
@@ -40,6 +40,8 @@
#define AV1_MAX_FRAME_BUF_COUNT (V4L2_AV1_TOTAL_REFS_PER_FRAME + 1)
+#define MAX_POSTPROC_BUFFERS 64
+
struct hantro_dev;
struct hantro_ctx;
struct hantro_buf;
@@ -336,7 +338,7 @@ struct hantro_av1_dec_hw_ctx {
* @dec_q: References buffers, in decoder format.
*/
struct hantro_postproc_ctx {
- struct hantro_aux_buf dec_q[VB2_MAX_FRAME];
+ struct hantro_aux_buf dec_q[MAX_POSTPROC_BUFFERS];
};
/**
diff --git a/drivers/media/platform/verisilicon/hantro_postproc.c b/drivers/media/platform/verisilicon/hantro_postproc.c
index 8f8f17e671ce..41e93176300b 100644
--- a/drivers/media/platform/verisilicon/hantro_postproc.c
+++ b/drivers/media/platform/verisilicon/hantro_postproc.c
@@ -177,9 +177,11 @@ static int hantro_postproc_g2_enum_framesizes(struct hantro_ctx *ctx,
void hantro_postproc_free(struct hantro_ctx *ctx)
{
struct hantro_dev *vpu = ctx->dev;
+ struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
+ struct vb2_queue *queue = &m2m_ctx->cap_q_ctx.q;
unsigned int i;
- for (i = 0; i < VB2_MAX_FRAME; ++i) {
+ for (i = 0; i < queue->max_num_buffers; ++i) {
struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
if (priv->cpu) {
@@ -190,20 +192,17 @@ void hantro_postproc_free(struct hantro_ctx *ctx)
}
}
-int hantro_postproc_alloc(struct hantro_ctx *ctx)
+static unsigned int hantro_postproc_buffer_size(struct hantro_ctx *ctx)
{
- struct hantro_dev *vpu = ctx->dev;
- struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
- struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
- unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
struct v4l2_pix_format_mplane pix_mp;
const struct hantro_fmt *fmt;
- unsigned int i, buf_size;
+ unsigned int buf_size;
/* this should always pick native format */
fmt = hantro_get_default_fmt(ctx, false, ctx->bit_depth, HANTRO_AUTO_POSTPROC);
if (!fmt)
- return -EINVAL;
+ return 0;
+
v4l2_fill_pixfmt_mp(&pix_mp, fmt->fourcc, ctx->src_fmt.width,
ctx->src_fmt.height);
@@ -221,23 +220,77 @@ int hantro_postproc_alloc(struct hantro_ctx *ctx)
buf_size += hantro_av1_mv_size(pix_mp.width,
pix_mp.height);
- for (i = 0; i < num_buffers; ++i) {
- struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
+ return buf_size;
+}
+
+static int hantro_postproc_alloc(struct hantro_ctx *ctx, int index)
+{
+ struct hantro_dev *vpu = ctx->dev;
+ struct hantro_aux_buf *priv = &ctx->postproc.dec_q[index];
+ unsigned int buf_size = hantro_postproc_buffer_size(ctx);
+
+ if (!buf_size)
+ return -EINVAL;
+
+ /*
+ * The buffers on this queue are meant as intermediate
+ * buffers for the decoder, so no mapping is needed.
+ */
+ priv->attrs = DMA_ATTR_NO_KERNEL_MAPPING;
+ priv->cpu = dma_alloc_attrs(vpu->dev, buf_size, &priv->dma,
+ GFP_KERNEL, priv->attrs);
+ if (!priv->cpu)
+ return -ENOMEM;
+ priv->size = buf_size;
+
+ return 0;
+}
- /*
- * The buffers on this queue are meant as intermediate
- * buffers for the decoder, so no mapping is needed.
- */
- priv->attrs = DMA_ATTR_NO_KERNEL_MAPPING;
- priv->cpu = dma_alloc_attrs(vpu->dev, buf_size, &priv->dma,
- GFP_KERNEL, priv->attrs);
- if (!priv->cpu)
- return -ENOMEM;
- priv->size = buf_size;
+int hantro_postproc_init(struct hantro_ctx *ctx)
+{
+ struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
+ struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
+ unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
+ unsigned int i;
+ int ret;
+
+ for (i = 0; i < num_buffers; i++) {
+ ret = hantro_postproc_alloc(ctx, i);
+ if (ret)
+ return ret;
}
+
return 0;
}
+dma_addr_t
+hantro_postproc_get_dec_buf_addr(struct hantro_ctx *ctx, int index)
+{
+ struct hantro_aux_buf *priv = &ctx->postproc.dec_q[index];
+ unsigned int buf_size = hantro_postproc_buffer_size(ctx);
+ struct hantro_dev *vpu = ctx->dev;
+ int ret;
+
+ if (priv->size < buf_size && priv->cpu) {
+ /* buffer is too small, release it */
+ dma_free_attrs(vpu->dev, priv->size, priv->cpu,
+ priv->dma, priv->attrs);
+ priv->cpu = NULL;
+ }
+
+ if (!priv->cpu) {
+ /* buffer not already allocated, try getting a new one */
+ ret = hantro_postproc_alloc(ctx, index);
+ if (ret)
+ return 0;
+ }
+
+ if (!priv->cpu)
+ return 0;
+
+ return priv->dma;
+}
+
static void hantro_postproc_g1_disable(struct hantro_ctx *ctx)
{
struct hantro_dev *vpu = ctx->dev;
diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
index b3ae037a50f6..f0d8b165abcd 100644
--- a/drivers/media/platform/verisilicon/hantro_v4l2.c
+++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
@@ -933,7 +933,7 @@ static int hantro_start_streaming(struct vb2_queue *q, unsigned int count)
}
if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt)) {
- ret = hantro_postproc_alloc(ctx);
+ ret = hantro_postproc_init(ctx);
if (ret)
goto err_codec_exit;
}
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 47/56] media: verisilicon: Refactor postprocessor to store more buffers
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Since vb2 queue can store more than VB2_MAX_FRAME buffers, the
postprocessor buffer storage must be capable to store more buffers too.
Change static dec_q array to allocated array to be capable to store
up to queue 'max_num_buffers'.
Keep allocating queue 'num_buffers' at queue setup time but also allows
to allocate postprocessors buffers on the fly.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
drivers/media/platform/verisilicon/hantro.h | 7 +-
.../media/platform/verisilicon/hantro_drv.c | 4 +-
.../media/platform/verisilicon/hantro_hw.h | 4 +-
.../platform/verisilicon/hantro_postproc.c | 93 +++++++++++++++----
.../media/platform/verisilicon/hantro_v4l2.c | 2 +-
5 files changed, 85 insertions(+), 25 deletions(-)
diff --git a/drivers/media/platform/verisilicon/hantro.h b/drivers/media/platform/verisilicon/hantro.h
index 77aee9489516..0948b04a9f8d 100644
--- a/drivers/media/platform/verisilicon/hantro.h
+++ b/drivers/media/platform/verisilicon/hantro.h
@@ -469,11 +469,14 @@ hantro_get_dst_buf(struct hantro_ctx *ctx)
bool hantro_needs_postproc(const struct hantro_ctx *ctx,
const struct hantro_fmt *fmt);
+dma_addr_t
+hantro_postproc_get_dec_buf_addr(struct hantro_ctx *ctx, int index);
+
static inline dma_addr_t
hantro_get_dec_buf_addr(struct hantro_ctx *ctx, struct vb2_buffer *vb)
{
if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt))
- return ctx->postproc.dec_q[vb->index].dma;
+ return hantro_postproc_get_dec_buf_addr(ctx, vb->index);
return vb2_dma_contig_plane_dma_addr(vb, 0);
}
@@ -485,8 +488,8 @@ vb2_to_hantro_decoded_buf(struct vb2_buffer *buf)
void hantro_postproc_disable(struct hantro_ctx *ctx);
void hantro_postproc_enable(struct hantro_ctx *ctx);
+int hantro_postproc_init(struct hantro_ctx *ctx);
void hantro_postproc_free(struct hantro_ctx *ctx);
-int hantro_postproc_alloc(struct hantro_ctx *ctx);
int hanto_postproc_enum_framesizes(struct hantro_ctx *ctx,
struct v4l2_frmsizeenum *fsize);
diff --git a/drivers/media/platform/verisilicon/hantro_drv.c b/drivers/media/platform/verisilicon/hantro_drv.c
index a9fa05ac56a9..7f5b82eb6649 100644
--- a/drivers/media/platform/verisilicon/hantro_drv.c
+++ b/drivers/media/platform/verisilicon/hantro_drv.c
@@ -235,8 +235,10 @@ queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
* The Kernel needs access to the JPEG destination buffer for the
* JPEG encoder to fill in the JPEG headers.
*/
- if (!ctx->is_encoder)
+ if (!ctx->is_encoder) {
dst_vq->dma_attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
+ dst_vq->max_num_buffers = MAX_POSTPROC_BUFFERS;
+ }
dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
diff --git a/drivers/media/platform/verisilicon/hantro_hw.h b/drivers/media/platform/verisilicon/hantro_hw.h
index 7f33f7b07ce4..292a76ef643e 100644
--- a/drivers/media/platform/verisilicon/hantro_hw.h
+++ b/drivers/media/platform/verisilicon/hantro_hw.h
@@ -40,6 +40,8 @@
#define AV1_MAX_FRAME_BUF_COUNT (V4L2_AV1_TOTAL_REFS_PER_FRAME + 1)
+#define MAX_POSTPROC_BUFFERS 64
+
struct hantro_dev;
struct hantro_ctx;
struct hantro_buf;
@@ -336,7 +338,7 @@ struct hantro_av1_dec_hw_ctx {
* @dec_q: References buffers, in decoder format.
*/
struct hantro_postproc_ctx {
- struct hantro_aux_buf dec_q[VB2_MAX_FRAME];
+ struct hantro_aux_buf dec_q[MAX_POSTPROC_BUFFERS];
};
/**
diff --git a/drivers/media/platform/verisilicon/hantro_postproc.c b/drivers/media/platform/verisilicon/hantro_postproc.c
index 8f8f17e671ce..41e93176300b 100644
--- a/drivers/media/platform/verisilicon/hantro_postproc.c
+++ b/drivers/media/platform/verisilicon/hantro_postproc.c
@@ -177,9 +177,11 @@ static int hantro_postproc_g2_enum_framesizes(struct hantro_ctx *ctx,
void hantro_postproc_free(struct hantro_ctx *ctx)
{
struct hantro_dev *vpu = ctx->dev;
+ struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
+ struct vb2_queue *queue = &m2m_ctx->cap_q_ctx.q;
unsigned int i;
- for (i = 0; i < VB2_MAX_FRAME; ++i) {
+ for (i = 0; i < queue->max_num_buffers; ++i) {
struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
if (priv->cpu) {
@@ -190,20 +192,17 @@ void hantro_postproc_free(struct hantro_ctx *ctx)
}
}
-int hantro_postproc_alloc(struct hantro_ctx *ctx)
+static unsigned int hantro_postproc_buffer_size(struct hantro_ctx *ctx)
{
- struct hantro_dev *vpu = ctx->dev;
- struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
- struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
- unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
struct v4l2_pix_format_mplane pix_mp;
const struct hantro_fmt *fmt;
- unsigned int i, buf_size;
+ unsigned int buf_size;
/* this should always pick native format */
fmt = hantro_get_default_fmt(ctx, false, ctx->bit_depth, HANTRO_AUTO_POSTPROC);
if (!fmt)
- return -EINVAL;
+ return 0;
+
v4l2_fill_pixfmt_mp(&pix_mp, fmt->fourcc, ctx->src_fmt.width,
ctx->src_fmt.height);
@@ -221,23 +220,77 @@ int hantro_postproc_alloc(struct hantro_ctx *ctx)
buf_size += hantro_av1_mv_size(pix_mp.width,
pix_mp.height);
- for (i = 0; i < num_buffers; ++i) {
- struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
+ return buf_size;
+}
+
+static int hantro_postproc_alloc(struct hantro_ctx *ctx, int index)
+{
+ struct hantro_dev *vpu = ctx->dev;
+ struct hantro_aux_buf *priv = &ctx->postproc.dec_q[index];
+ unsigned int buf_size = hantro_postproc_buffer_size(ctx);
+
+ if (!buf_size)
+ return -EINVAL;
+
+ /*
+ * The buffers on this queue are meant as intermediate
+ * buffers for the decoder, so no mapping is needed.
+ */
+ priv->attrs = DMA_ATTR_NO_KERNEL_MAPPING;
+ priv->cpu = dma_alloc_attrs(vpu->dev, buf_size, &priv->dma,
+ GFP_KERNEL, priv->attrs);
+ if (!priv->cpu)
+ return -ENOMEM;
+ priv->size = buf_size;
+
+ return 0;
+}
- /*
- * The buffers on this queue are meant as intermediate
- * buffers for the decoder, so no mapping is needed.
- */
- priv->attrs = DMA_ATTR_NO_KERNEL_MAPPING;
- priv->cpu = dma_alloc_attrs(vpu->dev, buf_size, &priv->dma,
- GFP_KERNEL, priv->attrs);
- if (!priv->cpu)
- return -ENOMEM;
- priv->size = buf_size;
+int hantro_postproc_init(struct hantro_ctx *ctx)
+{
+ struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
+ struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
+ unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
+ unsigned int i;
+ int ret;
+
+ for (i = 0; i < num_buffers; i++) {
+ ret = hantro_postproc_alloc(ctx, i);
+ if (ret)
+ return ret;
}
+
return 0;
}
+dma_addr_t
+hantro_postproc_get_dec_buf_addr(struct hantro_ctx *ctx, int index)
+{
+ struct hantro_aux_buf *priv = &ctx->postproc.dec_q[index];
+ unsigned int buf_size = hantro_postproc_buffer_size(ctx);
+ struct hantro_dev *vpu = ctx->dev;
+ int ret;
+
+ if (priv->size < buf_size && priv->cpu) {
+ /* buffer is too small, release it */
+ dma_free_attrs(vpu->dev, priv->size, priv->cpu,
+ priv->dma, priv->attrs);
+ priv->cpu = NULL;
+ }
+
+ if (!priv->cpu) {
+ /* buffer not already allocated, try getting a new one */
+ ret = hantro_postproc_alloc(ctx, index);
+ if (ret)
+ return 0;
+ }
+
+ if (!priv->cpu)
+ return 0;
+
+ return priv->dma;
+}
+
static void hantro_postproc_g1_disable(struct hantro_ctx *ctx)
{
struct hantro_dev *vpu = ctx->dev;
diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
index b3ae037a50f6..f0d8b165abcd 100644
--- a/drivers/media/platform/verisilicon/hantro_v4l2.c
+++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
@@ -933,7 +933,7 @@ static int hantro_start_streaming(struct vb2_queue *q, unsigned int count)
}
if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt)) {
- ret = hantro_postproc_alloc(ctx);
+ ret = hantro_postproc_init(ctx);
if (ret)
goto err_codec_exit;
}
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 48/56] media: verisilicon: Store chroma and motion vectors offset
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Store computed values of chroma and motion vectors offset because
they depends on width and height values which change if the resolution
change.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
drivers/media/platform/verisilicon/hantro.h | 2 ++
drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c | 6 ++++--
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/verisilicon/hantro.h b/drivers/media/platform/verisilicon/hantro.h
index 0948b04a9f8d..6f5eb975d0e3 100644
--- a/drivers/media/platform/verisilicon/hantro.h
+++ b/drivers/media/platform/verisilicon/hantro.h
@@ -328,6 +328,8 @@ struct hantro_vp9_decoded_buffer_info {
/* Info needed when the decoded frame serves as a reference frame. */
unsigned short width;
unsigned short height;
+ size_t chroma_offset;
+ size_t mv_offset;
u32 bit_depth : 4;
};
diff --git a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
index 6fc4b555517f..6db1c32fce4d 100644
--- a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
+++ b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
@@ -158,9 +158,11 @@ static void config_output(struct hantro_ctx *ctx,
chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
hantro_write_addr(ctx->dev, G2_OUT_CHROMA_ADDR, chroma_addr);
+ dst->vp9.chroma_offset = chroma_offset(ctx, dec_params);
mv_addr = luma_addr + mv_offset(ctx, dec_params);
hantro_write_addr(ctx->dev, G2_OUT_MV_ADDR, mv_addr);
+ dst->vp9.mv_offset = mv_offset(ctx, dec_params);
}
struct hantro_vp9_ref_reg {
@@ -195,7 +197,7 @@ static void config_ref(struct hantro_ctx *ctx,
luma_addr = hantro_get_dec_buf_addr(ctx, &buf->base.vb.vb2_buf);
hantro_write_addr(ctx->dev, ref_reg->y_base, luma_addr);
- chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
+ chroma_addr = luma_addr + buf->vp9.chroma_offset;
hantro_write_addr(ctx->dev, ref_reg->c_base, chroma_addr);
}
@@ -238,7 +240,7 @@ static void config_ref_registers(struct hantro_ctx *ctx,
config_ref(ctx, dst, &ref_regs[2], dec_params, dec_params->alt_frame_ts);
mv_addr = hantro_get_dec_buf_addr(ctx, &mv_ref->base.vb.vb2_buf) +
- mv_offset(ctx, dec_params);
+ mv_ref->vp9.mv_offset;
hantro_write_addr(ctx->dev, G2_REF_MV_ADDR(0), mv_addr);
hantro_reg_write(ctx->dev, &vp9_last_sign_bias,
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 48/56] media: verisilicon: Store chroma and motion vectors offset
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Store computed values of chroma and motion vectors offset because
they depends on width and height values which change if the resolution
change.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
drivers/media/platform/verisilicon/hantro.h | 2 ++
drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c | 6 ++++--
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/verisilicon/hantro.h b/drivers/media/platform/verisilicon/hantro.h
index 0948b04a9f8d..6f5eb975d0e3 100644
--- a/drivers/media/platform/verisilicon/hantro.h
+++ b/drivers/media/platform/verisilicon/hantro.h
@@ -328,6 +328,8 @@ struct hantro_vp9_decoded_buffer_info {
/* Info needed when the decoded frame serves as a reference frame. */
unsigned short width;
unsigned short height;
+ size_t chroma_offset;
+ size_t mv_offset;
u32 bit_depth : 4;
};
diff --git a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
index 6fc4b555517f..6db1c32fce4d 100644
--- a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
+++ b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
@@ -158,9 +158,11 @@ static void config_output(struct hantro_ctx *ctx,
chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
hantro_write_addr(ctx->dev, G2_OUT_CHROMA_ADDR, chroma_addr);
+ dst->vp9.chroma_offset = chroma_offset(ctx, dec_params);
mv_addr = luma_addr + mv_offset(ctx, dec_params);
hantro_write_addr(ctx->dev, G2_OUT_MV_ADDR, mv_addr);
+ dst->vp9.mv_offset = mv_offset(ctx, dec_params);
}
struct hantro_vp9_ref_reg {
@@ -195,7 +197,7 @@ static void config_ref(struct hantro_ctx *ctx,
luma_addr = hantro_get_dec_buf_addr(ctx, &buf->base.vb.vb2_buf);
hantro_write_addr(ctx->dev, ref_reg->y_base, luma_addr);
- chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
+ chroma_addr = luma_addr + buf->vp9.chroma_offset;
hantro_write_addr(ctx->dev, ref_reg->c_base, chroma_addr);
}
@@ -238,7 +240,7 @@ static void config_ref_registers(struct hantro_ctx *ctx,
config_ref(ctx, dst, &ref_regs[2], dec_params, dec_params->alt_frame_ts);
mv_addr = hantro_get_dec_buf_addr(ctx, &mv_ref->base.vb.vb2_buf) +
- mv_offset(ctx, dec_params);
+ mv_ref->vp9.mv_offset;
hantro_write_addr(ctx->dev, G2_REF_MV_ADDR(0), mv_addr);
hantro_reg_write(ctx->dev, &vp9_last_sign_bias,
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 48/56] media: verisilicon: Store chroma and motion vectors offset
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Store computed values of chroma and motion vectors offset because
they depends on width and height values which change if the resolution
change.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
drivers/media/platform/verisilicon/hantro.h | 2 ++
drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c | 6 ++++--
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/media/platform/verisilicon/hantro.h b/drivers/media/platform/verisilicon/hantro.h
index 0948b04a9f8d..6f5eb975d0e3 100644
--- a/drivers/media/platform/verisilicon/hantro.h
+++ b/drivers/media/platform/verisilicon/hantro.h
@@ -328,6 +328,8 @@ struct hantro_vp9_decoded_buffer_info {
/* Info needed when the decoded frame serves as a reference frame. */
unsigned short width;
unsigned short height;
+ size_t chroma_offset;
+ size_t mv_offset;
u32 bit_depth : 4;
};
diff --git a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
index 6fc4b555517f..6db1c32fce4d 100644
--- a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
+++ b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
@@ -158,9 +158,11 @@ static void config_output(struct hantro_ctx *ctx,
chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
hantro_write_addr(ctx->dev, G2_OUT_CHROMA_ADDR, chroma_addr);
+ dst->vp9.chroma_offset = chroma_offset(ctx, dec_params);
mv_addr = luma_addr + mv_offset(ctx, dec_params);
hantro_write_addr(ctx->dev, G2_OUT_MV_ADDR, mv_addr);
+ dst->vp9.mv_offset = mv_offset(ctx, dec_params);
}
struct hantro_vp9_ref_reg {
@@ -195,7 +197,7 @@ static void config_ref(struct hantro_ctx *ctx,
luma_addr = hantro_get_dec_buf_addr(ctx, &buf->base.vb.vb2_buf);
hantro_write_addr(ctx->dev, ref_reg->y_base, luma_addr);
- chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
+ chroma_addr = luma_addr + buf->vp9.chroma_offset;
hantro_write_addr(ctx->dev, ref_reg->c_base, chroma_addr);
}
@@ -238,7 +240,7 @@ static void config_ref_registers(struct hantro_ctx *ctx,
config_ref(ctx, dst, &ref_regs[2], dec_params, dec_params->alt_frame_ts);
mv_addr = hantro_get_dec_buf_addr(ctx, &mv_ref->base.vb.vb2_buf) +
- mv_offset(ctx, dec_params);
+ mv_ref->vp9.mv_offset;
hantro_write_addr(ctx->dev, G2_REF_MV_ADDR(0), mv_addr);
hantro_reg_write(ctx->dev, &vp9_last_sign_bias,
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 49/56] media: verisilicon: g2: Use common helpers to compute chroma and mv offsets
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
HEVC and VP9 are running on the same hardware and share the same
chroma and motion vectors offset constraint.
Create common helpers functions for these computation.
Source and destination buffer height may not be the same because
alignment constraint are different so use destination height to
compute chroma offset because we target this buffer as hardware
output.
To be able to use the helpers in both VP9 HEVC code remove dec_params
and use context->bit_depth instead.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
.../media/platform/verisilicon/hantro_g2.c | 14 ++++++++++
.../platform/verisilicon/hantro_g2_hevc_dec.c | 18 ++-----------
.../platform/verisilicon/hantro_g2_vp9_dec.c | 26 +++----------------
.../media/platform/verisilicon/hantro_hw.h | 3 +++
4 files changed, 23 insertions(+), 38 deletions(-)
diff --git a/drivers/media/platform/verisilicon/hantro_g2.c b/drivers/media/platform/verisilicon/hantro_g2.c
index ee5f14c5f8f2..b880a6849d58 100644
--- a/drivers/media/platform/verisilicon/hantro_g2.c
+++ b/drivers/media/platform/verisilicon/hantro_g2.c
@@ -8,6 +8,8 @@
#include "hantro_hw.h"
#include "hantro_g2_regs.h"
+#define G2_ALIGN 16
+
void hantro_g2_check_idle(struct hantro_dev *vpu)
{
int i;
@@ -42,3 +44,15 @@ irqreturn_t hantro_g2_irq(int irq, void *dev_id)
return IRQ_HANDLED;
}
+
+size_t hantro_g2_chroma_offset(struct hantro_ctx *ctx)
+{
+ return ctx->dst_fmt.width * ctx->dst_fmt.height * ctx->bit_depth / 8;
+}
+
+size_t hantro_g2_motion_vectors_offset(struct hantro_ctx *ctx)
+{
+ size_t cr_offset = hantro_g2_chroma_offset(ctx);
+
+ return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
+}
diff --git a/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c b/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
index a9d4ac84a8d8..d3f8c33eb16c 100644
--- a/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
+++ b/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
@@ -8,20 +8,6 @@
#include "hantro_hw.h"
#include "hantro_g2_regs.h"
-#define G2_ALIGN 16
-
-static size_t hantro_hevc_chroma_offset(struct hantro_ctx *ctx)
-{
- return ctx->dst_fmt.width * ctx->dst_fmt.height * ctx->bit_depth / 8;
-}
-
-static size_t hantro_hevc_motion_vectors_offset(struct hantro_ctx *ctx)
-{
- size_t cr_offset = hantro_hevc_chroma_offset(ctx);
-
- return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
-}
-
static void prepare_tile_info_buffer(struct hantro_ctx *ctx)
{
struct hantro_dev *vpu = ctx->dev;
@@ -384,8 +370,8 @@ static int set_ref(struct hantro_ctx *ctx)
struct hantro_dev *vpu = ctx->dev;
struct vb2_v4l2_buffer *vb2_dst;
struct hantro_decoded_buffer *dst;
- size_t cr_offset = hantro_hevc_chroma_offset(ctx);
- size_t mv_offset = hantro_hevc_motion_vectors_offset(ctx);
+ size_t cr_offset = hantro_g2_chroma_offset(ctx);
+ size_t mv_offset = hantro_g2_motion_vectors_offset(ctx);
u32 max_ref_frames;
u16 dpb_longterm_e;
static const struct hantro_reg cur_poc[] = {
diff --git a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
index 6db1c32fce4d..342e543dee4c 100644
--- a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
+++ b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
@@ -16,8 +16,6 @@
#include "hantro_vp9.h"
#include "hantro_g2_regs.h"
-#define G2_ALIGN 16
-
enum hantro_ref_frames {
INTRA_FRAME = 0,
LAST_FRAME = 1,
@@ -90,22 +88,6 @@ static int start_prepare_run(struct hantro_ctx *ctx, const struct v4l2_ctrl_vp9_
return 0;
}
-static size_t chroma_offset(const struct hantro_ctx *ctx,
- const struct v4l2_ctrl_vp9_frame *dec_params)
-{
- int bytes_per_pixel = dec_params->bit_depth == 8 ? 1 : 2;
-
- return ctx->src_fmt.width * ctx->src_fmt.height * bytes_per_pixel;
-}
-
-static size_t mv_offset(const struct hantro_ctx *ctx,
- const struct v4l2_ctrl_vp9_frame *dec_params)
-{
- size_t cr_offset = chroma_offset(ctx, dec_params);
-
- return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
-}
-
static struct hantro_decoded_buffer *
get_ref_buf(struct hantro_ctx *ctx, struct vb2_v4l2_buffer *dst, u64 timestamp)
{
@@ -156,13 +138,13 @@ static void config_output(struct hantro_ctx *ctx,
luma_addr = hantro_get_dec_buf_addr(ctx, &dst->base.vb.vb2_buf);
hantro_write_addr(ctx->dev, G2_OUT_LUMA_ADDR, luma_addr);
- chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
+ chroma_addr = luma_addr + hantro_g2_chroma_offset(ctx);
hantro_write_addr(ctx->dev, G2_OUT_CHROMA_ADDR, chroma_addr);
- dst->vp9.chroma_offset = chroma_offset(ctx, dec_params);
+ dst->vp9.chroma_offset = hantro_g2_chroma_offset(ctx);
- mv_addr = luma_addr + mv_offset(ctx, dec_params);
+ mv_addr = luma_addr + hantro_g2_motion_vectors_offset(ctx);
hantro_write_addr(ctx->dev, G2_OUT_MV_ADDR, mv_addr);
- dst->vp9.mv_offset = mv_offset(ctx, dec_params);
+ dst->vp9.mv_offset = hantro_g2_motion_vectors_offset(ctx);
}
struct hantro_vp9_ref_reg {
diff --git a/drivers/media/platform/verisilicon/hantro_hw.h b/drivers/media/platform/verisilicon/hantro_hw.h
index 292a76ef643e..9aec8a79acdc 100644
--- a/drivers/media/platform/verisilicon/hantro_hw.h
+++ b/drivers/media/platform/verisilicon/hantro_hw.h
@@ -521,6 +521,9 @@ hantro_av1_mv_size(unsigned int width, unsigned int height)
return ALIGN(num_sbs * 384, 16) * 2 + 512;
}
+size_t hantro_g2_chroma_offset(struct hantro_ctx *ctx);
+size_t hantro_g2_motion_vectors_offset(struct hantro_ctx *ctx);
+
int hantro_g1_mpeg2_dec_run(struct hantro_ctx *ctx);
int rockchip_vpu2_mpeg2_dec_run(struct hantro_ctx *ctx);
void hantro_mpeg2_dec_copy_qtable(u8 *qtable,
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 49/56] media: verisilicon: g2: Use common helpers to compute chroma and mv offsets
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
HEVC and VP9 are running on the same hardware and share the same
chroma and motion vectors offset constraint.
Create common helpers functions for these computation.
Source and destination buffer height may not be the same because
alignment constraint are different so use destination height to
compute chroma offset because we target this buffer as hardware
output.
To be able to use the helpers in both VP9 HEVC code remove dec_params
and use context->bit_depth instead.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
.../media/platform/verisilicon/hantro_g2.c | 14 ++++++++++
.../platform/verisilicon/hantro_g2_hevc_dec.c | 18 ++-----------
.../platform/verisilicon/hantro_g2_vp9_dec.c | 26 +++----------------
.../media/platform/verisilicon/hantro_hw.h | 3 +++
4 files changed, 23 insertions(+), 38 deletions(-)
diff --git a/drivers/media/platform/verisilicon/hantro_g2.c b/drivers/media/platform/verisilicon/hantro_g2.c
index ee5f14c5f8f2..b880a6849d58 100644
--- a/drivers/media/platform/verisilicon/hantro_g2.c
+++ b/drivers/media/platform/verisilicon/hantro_g2.c
@@ -8,6 +8,8 @@
#include "hantro_hw.h"
#include "hantro_g2_regs.h"
+#define G2_ALIGN 16
+
void hantro_g2_check_idle(struct hantro_dev *vpu)
{
int i;
@@ -42,3 +44,15 @@ irqreturn_t hantro_g2_irq(int irq, void *dev_id)
return IRQ_HANDLED;
}
+
+size_t hantro_g2_chroma_offset(struct hantro_ctx *ctx)
+{
+ return ctx->dst_fmt.width * ctx->dst_fmt.height * ctx->bit_depth / 8;
+}
+
+size_t hantro_g2_motion_vectors_offset(struct hantro_ctx *ctx)
+{
+ size_t cr_offset = hantro_g2_chroma_offset(ctx);
+
+ return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
+}
diff --git a/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c b/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
index a9d4ac84a8d8..d3f8c33eb16c 100644
--- a/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
+++ b/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
@@ -8,20 +8,6 @@
#include "hantro_hw.h"
#include "hantro_g2_regs.h"
-#define G2_ALIGN 16
-
-static size_t hantro_hevc_chroma_offset(struct hantro_ctx *ctx)
-{
- return ctx->dst_fmt.width * ctx->dst_fmt.height * ctx->bit_depth / 8;
-}
-
-static size_t hantro_hevc_motion_vectors_offset(struct hantro_ctx *ctx)
-{
- size_t cr_offset = hantro_hevc_chroma_offset(ctx);
-
- return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
-}
-
static void prepare_tile_info_buffer(struct hantro_ctx *ctx)
{
struct hantro_dev *vpu = ctx->dev;
@@ -384,8 +370,8 @@ static int set_ref(struct hantro_ctx *ctx)
struct hantro_dev *vpu = ctx->dev;
struct vb2_v4l2_buffer *vb2_dst;
struct hantro_decoded_buffer *dst;
- size_t cr_offset = hantro_hevc_chroma_offset(ctx);
- size_t mv_offset = hantro_hevc_motion_vectors_offset(ctx);
+ size_t cr_offset = hantro_g2_chroma_offset(ctx);
+ size_t mv_offset = hantro_g2_motion_vectors_offset(ctx);
u32 max_ref_frames;
u16 dpb_longterm_e;
static const struct hantro_reg cur_poc[] = {
diff --git a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
index 6db1c32fce4d..342e543dee4c 100644
--- a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
+++ b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
@@ -16,8 +16,6 @@
#include "hantro_vp9.h"
#include "hantro_g2_regs.h"
-#define G2_ALIGN 16
-
enum hantro_ref_frames {
INTRA_FRAME = 0,
LAST_FRAME = 1,
@@ -90,22 +88,6 @@ static int start_prepare_run(struct hantro_ctx *ctx, const struct v4l2_ctrl_vp9_
return 0;
}
-static size_t chroma_offset(const struct hantro_ctx *ctx,
- const struct v4l2_ctrl_vp9_frame *dec_params)
-{
- int bytes_per_pixel = dec_params->bit_depth == 8 ? 1 : 2;
-
- return ctx->src_fmt.width * ctx->src_fmt.height * bytes_per_pixel;
-}
-
-static size_t mv_offset(const struct hantro_ctx *ctx,
- const struct v4l2_ctrl_vp9_frame *dec_params)
-{
- size_t cr_offset = chroma_offset(ctx, dec_params);
-
- return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
-}
-
static struct hantro_decoded_buffer *
get_ref_buf(struct hantro_ctx *ctx, struct vb2_v4l2_buffer *dst, u64 timestamp)
{
@@ -156,13 +138,13 @@ static void config_output(struct hantro_ctx *ctx,
luma_addr = hantro_get_dec_buf_addr(ctx, &dst->base.vb.vb2_buf);
hantro_write_addr(ctx->dev, G2_OUT_LUMA_ADDR, luma_addr);
- chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
+ chroma_addr = luma_addr + hantro_g2_chroma_offset(ctx);
hantro_write_addr(ctx->dev, G2_OUT_CHROMA_ADDR, chroma_addr);
- dst->vp9.chroma_offset = chroma_offset(ctx, dec_params);
+ dst->vp9.chroma_offset = hantro_g2_chroma_offset(ctx);
- mv_addr = luma_addr + mv_offset(ctx, dec_params);
+ mv_addr = luma_addr + hantro_g2_motion_vectors_offset(ctx);
hantro_write_addr(ctx->dev, G2_OUT_MV_ADDR, mv_addr);
- dst->vp9.mv_offset = mv_offset(ctx, dec_params);
+ dst->vp9.mv_offset = hantro_g2_motion_vectors_offset(ctx);
}
struct hantro_vp9_ref_reg {
diff --git a/drivers/media/platform/verisilicon/hantro_hw.h b/drivers/media/platform/verisilicon/hantro_hw.h
index 292a76ef643e..9aec8a79acdc 100644
--- a/drivers/media/platform/verisilicon/hantro_hw.h
+++ b/drivers/media/platform/verisilicon/hantro_hw.h
@@ -521,6 +521,9 @@ hantro_av1_mv_size(unsigned int width, unsigned int height)
return ALIGN(num_sbs * 384, 16) * 2 + 512;
}
+size_t hantro_g2_chroma_offset(struct hantro_ctx *ctx);
+size_t hantro_g2_motion_vectors_offset(struct hantro_ctx *ctx);
+
int hantro_g1_mpeg2_dec_run(struct hantro_ctx *ctx);
int rockchip_vpu2_mpeg2_dec_run(struct hantro_ctx *ctx);
void hantro_mpeg2_dec_copy_qtable(u8 *qtable,
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 49/56] media: verisilicon: g2: Use common helpers to compute chroma and mv offsets
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
HEVC and VP9 are running on the same hardware and share the same
chroma and motion vectors offset constraint.
Create common helpers functions for these computation.
Source and destination buffer height may not be the same because
alignment constraint are different so use destination height to
compute chroma offset because we target this buffer as hardware
output.
To be able to use the helpers in both VP9 HEVC code remove dec_params
and use context->bit_depth instead.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
.../media/platform/verisilicon/hantro_g2.c | 14 ++++++++++
.../platform/verisilicon/hantro_g2_hevc_dec.c | 18 ++-----------
.../platform/verisilicon/hantro_g2_vp9_dec.c | 26 +++----------------
.../media/platform/verisilicon/hantro_hw.h | 3 +++
4 files changed, 23 insertions(+), 38 deletions(-)
diff --git a/drivers/media/platform/verisilicon/hantro_g2.c b/drivers/media/platform/verisilicon/hantro_g2.c
index ee5f14c5f8f2..b880a6849d58 100644
--- a/drivers/media/platform/verisilicon/hantro_g2.c
+++ b/drivers/media/platform/verisilicon/hantro_g2.c
@@ -8,6 +8,8 @@
#include "hantro_hw.h"
#include "hantro_g2_regs.h"
+#define G2_ALIGN 16
+
void hantro_g2_check_idle(struct hantro_dev *vpu)
{
int i;
@@ -42,3 +44,15 @@ irqreturn_t hantro_g2_irq(int irq, void *dev_id)
return IRQ_HANDLED;
}
+
+size_t hantro_g2_chroma_offset(struct hantro_ctx *ctx)
+{
+ return ctx->dst_fmt.width * ctx->dst_fmt.height * ctx->bit_depth / 8;
+}
+
+size_t hantro_g2_motion_vectors_offset(struct hantro_ctx *ctx)
+{
+ size_t cr_offset = hantro_g2_chroma_offset(ctx);
+
+ return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
+}
diff --git a/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c b/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
index a9d4ac84a8d8..d3f8c33eb16c 100644
--- a/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
+++ b/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
@@ -8,20 +8,6 @@
#include "hantro_hw.h"
#include "hantro_g2_regs.h"
-#define G2_ALIGN 16
-
-static size_t hantro_hevc_chroma_offset(struct hantro_ctx *ctx)
-{
- return ctx->dst_fmt.width * ctx->dst_fmt.height * ctx->bit_depth / 8;
-}
-
-static size_t hantro_hevc_motion_vectors_offset(struct hantro_ctx *ctx)
-{
- size_t cr_offset = hantro_hevc_chroma_offset(ctx);
-
- return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
-}
-
static void prepare_tile_info_buffer(struct hantro_ctx *ctx)
{
struct hantro_dev *vpu = ctx->dev;
@@ -384,8 +370,8 @@ static int set_ref(struct hantro_ctx *ctx)
struct hantro_dev *vpu = ctx->dev;
struct vb2_v4l2_buffer *vb2_dst;
struct hantro_decoded_buffer *dst;
- size_t cr_offset = hantro_hevc_chroma_offset(ctx);
- size_t mv_offset = hantro_hevc_motion_vectors_offset(ctx);
+ size_t cr_offset = hantro_g2_chroma_offset(ctx);
+ size_t mv_offset = hantro_g2_motion_vectors_offset(ctx);
u32 max_ref_frames;
u16 dpb_longterm_e;
static const struct hantro_reg cur_poc[] = {
diff --git a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
index 6db1c32fce4d..342e543dee4c 100644
--- a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
+++ b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
@@ -16,8 +16,6 @@
#include "hantro_vp9.h"
#include "hantro_g2_regs.h"
-#define G2_ALIGN 16
-
enum hantro_ref_frames {
INTRA_FRAME = 0,
LAST_FRAME = 1,
@@ -90,22 +88,6 @@ static int start_prepare_run(struct hantro_ctx *ctx, const struct v4l2_ctrl_vp9_
return 0;
}
-static size_t chroma_offset(const struct hantro_ctx *ctx,
- const struct v4l2_ctrl_vp9_frame *dec_params)
-{
- int bytes_per_pixel = dec_params->bit_depth == 8 ? 1 : 2;
-
- return ctx->src_fmt.width * ctx->src_fmt.height * bytes_per_pixel;
-}
-
-static size_t mv_offset(const struct hantro_ctx *ctx,
- const struct v4l2_ctrl_vp9_frame *dec_params)
-{
- size_t cr_offset = chroma_offset(ctx, dec_params);
-
- return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
-}
-
static struct hantro_decoded_buffer *
get_ref_buf(struct hantro_ctx *ctx, struct vb2_v4l2_buffer *dst, u64 timestamp)
{
@@ -156,13 +138,13 @@ static void config_output(struct hantro_ctx *ctx,
luma_addr = hantro_get_dec_buf_addr(ctx, &dst->base.vb.vb2_buf);
hantro_write_addr(ctx->dev, G2_OUT_LUMA_ADDR, luma_addr);
- chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
+ chroma_addr = luma_addr + hantro_g2_chroma_offset(ctx);
hantro_write_addr(ctx->dev, G2_OUT_CHROMA_ADDR, chroma_addr);
- dst->vp9.chroma_offset = chroma_offset(ctx, dec_params);
+ dst->vp9.chroma_offset = hantro_g2_chroma_offset(ctx);
- mv_addr = luma_addr + mv_offset(ctx, dec_params);
+ mv_addr = luma_addr + hantro_g2_motion_vectors_offset(ctx);
hantro_write_addr(ctx->dev, G2_OUT_MV_ADDR, mv_addr);
- dst->vp9.mv_offset = mv_offset(ctx, dec_params);
+ dst->vp9.mv_offset = hantro_g2_motion_vectors_offset(ctx);
}
struct hantro_vp9_ref_reg {
diff --git a/drivers/media/platform/verisilicon/hantro_hw.h b/drivers/media/platform/verisilicon/hantro_hw.h
index 292a76ef643e..9aec8a79acdc 100644
--- a/drivers/media/platform/verisilicon/hantro_hw.h
+++ b/drivers/media/platform/verisilicon/hantro_hw.h
@@ -521,6 +521,9 @@ hantro_av1_mv_size(unsigned int width, unsigned int height)
return ALIGN(num_sbs * 384, 16) * 2 + 512;
}
+size_t hantro_g2_chroma_offset(struct hantro_ctx *ctx);
+size_t hantro_g2_motion_vectors_offset(struct hantro_ctx *ctx);
+
int hantro_g1_mpeg2_dec_run(struct hantro_ctx *ctx);
int rockchip_vpu2_mpeg2_dec_run(struct hantro_ctx *ctx);
void hantro_mpeg2_dec_copy_qtable(u8 *qtable,
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 50/56] media: verisilicon: vp9: Allow to change resolution while streaming
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Remove all checks that prohibit to set a new format while streaming.
This allow to change dynamically the resolution if the pixel format
remains the same.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
.../media/platform/verisilicon/hantro_v4l2.c | 24 +++----------------
1 file changed, 3 insertions(+), 21 deletions(-)
diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
index f0d8b165abcd..27a1e77cca38 100644
--- a/drivers/media/platform/verisilicon/hantro_v4l2.c
+++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
@@ -514,25 +514,14 @@ static int hantro_set_fmt_out(struct hantro_ctx *ctx,
return ret;
if (!ctx->is_encoder) {
- struct vb2_queue *peer_vq;
-
/*
* In order to support dynamic resolution change,
* the decoder admits a resolution change, as long
- * as the pixelformat remains. Can't be done if streaming.
- */
- if (vb2_is_streaming(vq) || (vb2_is_busy(vq) &&
- pix_mp->pixelformat != ctx->src_fmt.pixelformat))
- return -EBUSY;
- /*
- * Since format change on the OUTPUT queue will reset
- * the CAPTURE queue, we can't allow doing so
- * when the CAPTURE queue has buffers allocated.
+ * as the pixelformat remains.
*/
- peer_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
- V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
- if (vb2_is_busy(peer_vq))
+ if (vb2_is_streaming(vq) && pix_mp->pixelformat != ctx->src_fmt.pixelformat) {
return -EBUSY;
+ }
} else {
/*
* The encoder doesn't admit a format change if
@@ -577,15 +566,8 @@ static int hantro_set_fmt_out(struct hantro_ctx *ctx,
static int hantro_set_fmt_cap(struct hantro_ctx *ctx,
struct v4l2_pix_format_mplane *pix_mp)
{
- struct vb2_queue *vq;
int ret;
- /* Change not allowed if queue is busy. */
- vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
- V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
- if (vb2_is_busy(vq))
- return -EBUSY;
-
if (ctx->is_encoder) {
struct vb2_queue *peer_vq;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 50/56] media: verisilicon: vp9: Allow to change resolution while streaming
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Remove all checks that prohibit to set a new format while streaming.
This allow to change dynamically the resolution if the pixel format
remains the same.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
.../media/platform/verisilicon/hantro_v4l2.c | 24 +++----------------
1 file changed, 3 insertions(+), 21 deletions(-)
diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
index f0d8b165abcd..27a1e77cca38 100644
--- a/drivers/media/platform/verisilicon/hantro_v4l2.c
+++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
@@ -514,25 +514,14 @@ static int hantro_set_fmt_out(struct hantro_ctx *ctx,
return ret;
if (!ctx->is_encoder) {
- struct vb2_queue *peer_vq;
-
/*
* In order to support dynamic resolution change,
* the decoder admits a resolution change, as long
- * as the pixelformat remains. Can't be done if streaming.
- */
- if (vb2_is_streaming(vq) || (vb2_is_busy(vq) &&
- pix_mp->pixelformat != ctx->src_fmt.pixelformat))
- return -EBUSY;
- /*
- * Since format change on the OUTPUT queue will reset
- * the CAPTURE queue, we can't allow doing so
- * when the CAPTURE queue has buffers allocated.
+ * as the pixelformat remains.
*/
- peer_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
- V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
- if (vb2_is_busy(peer_vq))
+ if (vb2_is_streaming(vq) && pix_mp->pixelformat != ctx->src_fmt.pixelformat) {
return -EBUSY;
+ }
} else {
/*
* The encoder doesn't admit a format change if
@@ -577,15 +566,8 @@ static int hantro_set_fmt_out(struct hantro_ctx *ctx,
static int hantro_set_fmt_cap(struct hantro_ctx *ctx,
struct v4l2_pix_format_mplane *pix_mp)
{
- struct vb2_queue *vq;
int ret;
- /* Change not allowed if queue is busy. */
- vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
- V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
- if (vb2_is_busy(vq))
- return -EBUSY;
-
if (ctx->is_encoder) {
struct vb2_queue *peer_vq;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 50/56] media: verisilicon: vp9: Allow to change resolution while streaming
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Remove all checks that prohibit to set a new format while streaming.
This allow to change dynamically the resolution if the pixel format
remains the same.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
CC: Philipp Zabel <p.zabel@pengutronix.de>
---
.../media/platform/verisilicon/hantro_v4l2.c | 24 +++----------------
1 file changed, 3 insertions(+), 21 deletions(-)
diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
index f0d8b165abcd..27a1e77cca38 100644
--- a/drivers/media/platform/verisilicon/hantro_v4l2.c
+++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
@@ -514,25 +514,14 @@ static int hantro_set_fmt_out(struct hantro_ctx *ctx,
return ret;
if (!ctx->is_encoder) {
- struct vb2_queue *peer_vq;
-
/*
* In order to support dynamic resolution change,
* the decoder admits a resolution change, as long
- * as the pixelformat remains. Can't be done if streaming.
- */
- if (vb2_is_streaming(vq) || (vb2_is_busy(vq) &&
- pix_mp->pixelformat != ctx->src_fmt.pixelformat))
- return -EBUSY;
- /*
- * Since format change on the OUTPUT queue will reset
- * the CAPTURE queue, we can't allow doing so
- * when the CAPTURE queue has buffers allocated.
+ * as the pixelformat remains.
*/
- peer_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
- V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
- if (vb2_is_busy(peer_vq))
+ if (vb2_is_streaming(vq) && pix_mp->pixelformat != ctx->src_fmt.pixelformat) {
return -EBUSY;
+ }
} else {
/*
* The encoder doesn't admit a format change if
@@ -577,15 +566,8 @@ static int hantro_set_fmt_out(struct hantro_ctx *ctx,
static int hantro_set_fmt_cap(struct hantro_ctx *ctx,
struct v4l2_pix_format_mplane *pix_mp)
{
- struct vb2_queue *vq;
int ret;
- /* Change not allowed if queue is busy. */
- vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
- V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
- if (vb2_is_busy(vq))
- return -EBUSY;
-
if (ctx->is_encoder) {
struct vb2_queue *peer_vq;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 51/56] media: core: Rework how create_buf index returned value is computed
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
When DELETE_BUFS will be introduced holes could created in bufs array.
To be able to reuse these unused indices reworking how create->index
is set is mandatory.
Let __vb2_queue_alloc() decide which first index is correct and
forward this to the caller.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 22 ++++++++++++-------
.../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++++++++------
include/media/videobuf2-core.h | 5 ++++-
3 files changed, 31 insertions(+), 16 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 72ef7179d80a..2c8cf479a962 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -442,16 +442,21 @@ static void vb2_queue_remove_buffer(struct vb2_buffer *vb)
*/
static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
unsigned int num_buffers, unsigned int num_planes,
- const unsigned plane_sizes[VB2_MAX_PLANES])
+ const unsigned plane_sizes[VB2_MAX_PLANES],
+ unsigned int *first_index)
{
- unsigned int q_num_buffers = vb2_get_num_buffers(q);
unsigned int buffer, plane;
struct vb2_buffer *vb;
+ unsigned long index;
int ret;
/* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
num_buffers = min_t(unsigned int, num_buffers,
- q->max_num_buffers - q_num_buffers);
+ q->max_num_buffers - vb2_get_num_buffers(q));
+
+ index = vb2_get_num_buffers(q);
+
+ *first_index = index;
for (buffer = 0; buffer < num_buffers; ++buffer) {
/* Allocate vb2 buffer structures */
@@ -471,7 +476,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
vb->planes[plane].min_length = plane_sizes[plane];
}
- vb2_queue_add_buffer(q, vb, q_num_buffers + buffer);
+ vb2_queue_add_buffer(q, vb, index++);
call_void_bufop(q, init_buffer, vb);
/* Allocate video buffer memory for the MMAP type */
@@ -812,7 +817,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned int q_num_bufs = vb2_get_num_buffers(q);
unsigned plane_sizes[VB2_MAX_PLANES] = { };
bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
- unsigned int i;
+ unsigned int i, first_index;
int ret = 0;
if (q->streaming) {
@@ -898,7 +903,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
/* Finally, allocate buffers and video memory */
allocated_buffers =
- __vb2_queue_alloc(q, memory, num_buffers, num_planes, plane_sizes);
+ __vb2_queue_alloc(q, memory, num_buffers, num_planes, plane_sizes, &first_index);
if (allocated_buffers == 0) {
dprintk(q, 1, "memory allocation failed\n");
ret = -ENOMEM;
@@ -972,7 +977,8 @@ EXPORT_SYMBOL_GPL(vb2_core_reqbufs);
int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned int flags, unsigned int *count,
unsigned int requested_planes,
- const unsigned int requested_sizes[])
+ const unsigned int requested_sizes[],
+ unsigned int *first_index)
{
unsigned int num_planes = 0, num_buffers, allocated_buffers;
unsigned plane_sizes[VB2_MAX_PLANES] = { };
@@ -1034,7 +1040,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
/* Finally, allocate buffers and video memory */
allocated_buffers = __vb2_queue_alloc(q, memory, num_buffers,
- num_planes, plane_sizes);
+ num_planes, plane_sizes, first_index);
if (allocated_buffers == 0) {
dprintk(q, 1, "memory allocation failed\n");
ret = -ENOMEM;
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index bdfc3a253c65..56daf3b5b2ba 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -805,11 +805,16 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
for (i = 0; i < requested_planes; i++)
if (requested_sizes[i] == 0)
return -EINVAL;
- return ret ? ret : vb2_core_create_bufs(q, create->memory,
- create->flags,
- &create->count,
- requested_planes,
- requested_sizes);
+ if (ret)
+ return ret;
+
+ ret = vb2_core_create_bufs(q, create->memory,
+ create->flags,
+ &create->count,
+ requested_planes,
+ requested_sizes,
+ &create->index);
+ return ret;
}
EXPORT_SYMBOL_GPL(vb2_create_bufs);
@@ -1037,15 +1042,16 @@ int vb2_ioctl_create_bufs(struct file *file, void *priv,
int res = vb2_verify_memory_type(vdev->queue, p->memory,
p->format.type);
- p->index = vdev->queue->num_buffers;
fill_buf_caps(vdev->queue, &p->capabilities);
validate_memory_flags(vdev->queue, p->memory, &p->flags);
/*
* If count == 0, then just check if memory and type are valid.
* Any -EBUSY result from vb2_verify_memory_type can be mapped to 0.
*/
- if (p->count == 0)
+ if (p->count == 0) {
+ p->index = vb2_get_num_buffers(vdev->queue);
return res != -EBUSY ? res : 0;
+ }
if (res)
return res;
if (vb2_queue_is_busy(vdev->queue, file))
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index e77a397195f2..6986ff4b77cd 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -803,6 +803,8 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
* @count: requested buffer count.
* @requested_planes: number of planes requested.
* @requested_sizes: array with the size of the planes.
+ * @first_index: index of the first created buffer, all allocated buffers have
+ * indices in the range [first..first+count]
*
* Videobuf2 core helper to implement VIDIOC_CREATE_BUFS() operation. It is
* called internally by VB2 by an API-specific handler, like
@@ -819,7 +821,8 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned int flags, unsigned int *count,
unsigned int requested_planes,
- const unsigned int requested_sizes[]);
+ const unsigned int requested_sizes[],
+ unsigned int *first_index);
/**
* vb2_core_prepare_buf() - Pass ownership of a buffer from userspace
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 51/56] media: core: Rework how create_buf index returned value is computed
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
When DELETE_BUFS will be introduced holes could created in bufs array.
To be able to reuse these unused indices reworking how create->index
is set is mandatory.
Let __vb2_queue_alloc() decide which first index is correct and
forward this to the caller.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 22 ++++++++++++-------
.../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++++++++------
include/media/videobuf2-core.h | 5 ++++-
3 files changed, 31 insertions(+), 16 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 72ef7179d80a..2c8cf479a962 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -442,16 +442,21 @@ static void vb2_queue_remove_buffer(struct vb2_buffer *vb)
*/
static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
unsigned int num_buffers, unsigned int num_planes,
- const unsigned plane_sizes[VB2_MAX_PLANES])
+ const unsigned plane_sizes[VB2_MAX_PLANES],
+ unsigned int *first_index)
{
- unsigned int q_num_buffers = vb2_get_num_buffers(q);
unsigned int buffer, plane;
struct vb2_buffer *vb;
+ unsigned long index;
int ret;
/* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
num_buffers = min_t(unsigned int, num_buffers,
- q->max_num_buffers - q_num_buffers);
+ q->max_num_buffers - vb2_get_num_buffers(q));
+
+ index = vb2_get_num_buffers(q);
+
+ *first_index = index;
for (buffer = 0; buffer < num_buffers; ++buffer) {
/* Allocate vb2 buffer structures */
@@ -471,7 +476,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
vb->planes[plane].min_length = plane_sizes[plane];
}
- vb2_queue_add_buffer(q, vb, q_num_buffers + buffer);
+ vb2_queue_add_buffer(q, vb, index++);
call_void_bufop(q, init_buffer, vb);
/* Allocate video buffer memory for the MMAP type */
@@ -812,7 +817,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned int q_num_bufs = vb2_get_num_buffers(q);
unsigned plane_sizes[VB2_MAX_PLANES] = { };
bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
- unsigned int i;
+ unsigned int i, first_index;
int ret = 0;
if (q->streaming) {
@@ -898,7 +903,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
/* Finally, allocate buffers and video memory */
allocated_buffers =
- __vb2_queue_alloc(q, memory, num_buffers, num_planes, plane_sizes);
+ __vb2_queue_alloc(q, memory, num_buffers, num_planes, plane_sizes, &first_index);
if (allocated_buffers == 0) {
dprintk(q, 1, "memory allocation failed\n");
ret = -ENOMEM;
@@ -972,7 +977,8 @@ EXPORT_SYMBOL_GPL(vb2_core_reqbufs);
int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned int flags, unsigned int *count,
unsigned int requested_planes,
- const unsigned int requested_sizes[])
+ const unsigned int requested_sizes[],
+ unsigned int *first_index)
{
unsigned int num_planes = 0, num_buffers, allocated_buffers;
unsigned plane_sizes[VB2_MAX_PLANES] = { };
@@ -1034,7 +1040,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
/* Finally, allocate buffers and video memory */
allocated_buffers = __vb2_queue_alloc(q, memory, num_buffers,
- num_planes, plane_sizes);
+ num_planes, plane_sizes, first_index);
if (allocated_buffers == 0) {
dprintk(q, 1, "memory allocation failed\n");
ret = -ENOMEM;
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index bdfc3a253c65..56daf3b5b2ba 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -805,11 +805,16 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
for (i = 0; i < requested_planes; i++)
if (requested_sizes[i] == 0)
return -EINVAL;
- return ret ? ret : vb2_core_create_bufs(q, create->memory,
- create->flags,
- &create->count,
- requested_planes,
- requested_sizes);
+ if (ret)
+ return ret;
+
+ ret = vb2_core_create_bufs(q, create->memory,
+ create->flags,
+ &create->count,
+ requested_planes,
+ requested_sizes,
+ &create->index);
+ return ret;
}
EXPORT_SYMBOL_GPL(vb2_create_bufs);
@@ -1037,15 +1042,16 @@ int vb2_ioctl_create_bufs(struct file *file, void *priv,
int res = vb2_verify_memory_type(vdev->queue, p->memory,
p->format.type);
- p->index = vdev->queue->num_buffers;
fill_buf_caps(vdev->queue, &p->capabilities);
validate_memory_flags(vdev->queue, p->memory, &p->flags);
/*
* If count == 0, then just check if memory and type are valid.
* Any -EBUSY result from vb2_verify_memory_type can be mapped to 0.
*/
- if (p->count == 0)
+ if (p->count == 0) {
+ p->index = vb2_get_num_buffers(vdev->queue);
return res != -EBUSY ? res : 0;
+ }
if (res)
return res;
if (vb2_queue_is_busy(vdev->queue, file))
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index e77a397195f2..6986ff4b77cd 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -803,6 +803,8 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
* @count: requested buffer count.
* @requested_planes: number of planes requested.
* @requested_sizes: array with the size of the planes.
+ * @first_index: index of the first created buffer, all allocated buffers have
+ * indices in the range [first..first+count]
*
* Videobuf2 core helper to implement VIDIOC_CREATE_BUFS() operation. It is
* called internally by VB2 by an API-specific handler, like
@@ -819,7 +821,8 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned int flags, unsigned int *count,
unsigned int requested_planes,
- const unsigned int requested_sizes[]);
+ const unsigned int requested_sizes[],
+ unsigned int *first_index);
/**
* vb2_core_prepare_buf() - Pass ownership of a buffer from userspace
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 51/56] media: core: Rework how create_buf index returned value is computed
@ 2023-10-31 16:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:30 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
When DELETE_BUFS will be introduced holes could created in bufs array.
To be able to reuse these unused indices reworking how create->index
is set is mandatory.
Let __vb2_queue_alloc() decide which first index is correct and
forward this to the caller.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 22 ++++++++++++-------
.../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++++++++------
include/media/videobuf2-core.h | 5 ++++-
3 files changed, 31 insertions(+), 16 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 72ef7179d80a..2c8cf479a962 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -442,16 +442,21 @@ static void vb2_queue_remove_buffer(struct vb2_buffer *vb)
*/
static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
unsigned int num_buffers, unsigned int num_planes,
- const unsigned plane_sizes[VB2_MAX_PLANES])
+ const unsigned plane_sizes[VB2_MAX_PLANES],
+ unsigned int *first_index)
{
- unsigned int q_num_buffers = vb2_get_num_buffers(q);
unsigned int buffer, plane;
struct vb2_buffer *vb;
+ unsigned long index;
int ret;
/* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
num_buffers = min_t(unsigned int, num_buffers,
- q->max_num_buffers - q_num_buffers);
+ q->max_num_buffers - vb2_get_num_buffers(q));
+
+ index = vb2_get_num_buffers(q);
+
+ *first_index = index;
for (buffer = 0; buffer < num_buffers; ++buffer) {
/* Allocate vb2 buffer structures */
@@ -471,7 +476,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
vb->planes[plane].min_length = plane_sizes[plane];
}
- vb2_queue_add_buffer(q, vb, q_num_buffers + buffer);
+ vb2_queue_add_buffer(q, vb, index++);
call_void_bufop(q, init_buffer, vb);
/* Allocate video buffer memory for the MMAP type */
@@ -812,7 +817,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned int q_num_bufs = vb2_get_num_buffers(q);
unsigned plane_sizes[VB2_MAX_PLANES] = { };
bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
- unsigned int i;
+ unsigned int i, first_index;
int ret = 0;
if (q->streaming) {
@@ -898,7 +903,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
/* Finally, allocate buffers and video memory */
allocated_buffers =
- __vb2_queue_alloc(q, memory, num_buffers, num_planes, plane_sizes);
+ __vb2_queue_alloc(q, memory, num_buffers, num_planes, plane_sizes, &first_index);
if (allocated_buffers == 0) {
dprintk(q, 1, "memory allocation failed\n");
ret = -ENOMEM;
@@ -972,7 +977,8 @@ EXPORT_SYMBOL_GPL(vb2_core_reqbufs);
int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned int flags, unsigned int *count,
unsigned int requested_planes,
- const unsigned int requested_sizes[])
+ const unsigned int requested_sizes[],
+ unsigned int *first_index)
{
unsigned int num_planes = 0, num_buffers, allocated_buffers;
unsigned plane_sizes[VB2_MAX_PLANES] = { };
@@ -1034,7 +1040,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
/* Finally, allocate buffers and video memory */
allocated_buffers = __vb2_queue_alloc(q, memory, num_buffers,
- num_planes, plane_sizes);
+ num_planes, plane_sizes, first_index);
if (allocated_buffers == 0) {
dprintk(q, 1, "memory allocation failed\n");
ret = -ENOMEM;
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index bdfc3a253c65..56daf3b5b2ba 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -805,11 +805,16 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
for (i = 0; i < requested_planes; i++)
if (requested_sizes[i] == 0)
return -EINVAL;
- return ret ? ret : vb2_core_create_bufs(q, create->memory,
- create->flags,
- &create->count,
- requested_planes,
- requested_sizes);
+ if (ret)
+ return ret;
+
+ ret = vb2_core_create_bufs(q, create->memory,
+ create->flags,
+ &create->count,
+ requested_planes,
+ requested_sizes,
+ &create->index);
+ return ret;
}
EXPORT_SYMBOL_GPL(vb2_create_bufs);
@@ -1037,15 +1042,16 @@ int vb2_ioctl_create_bufs(struct file *file, void *priv,
int res = vb2_verify_memory_type(vdev->queue, p->memory,
p->format.type);
- p->index = vdev->queue->num_buffers;
fill_buf_caps(vdev->queue, &p->capabilities);
validate_memory_flags(vdev->queue, p->memory, &p->flags);
/*
* If count == 0, then just check if memory and type are valid.
* Any -EBUSY result from vb2_verify_memory_type can be mapped to 0.
*/
- if (p->count == 0)
+ if (p->count == 0) {
+ p->index = vb2_get_num_buffers(vdev->queue);
return res != -EBUSY ? res : 0;
+ }
if (res)
return res;
if (vb2_queue_is_busy(vdev->queue, file))
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index e77a397195f2..6986ff4b77cd 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -803,6 +803,8 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
* @count: requested buffer count.
* @requested_planes: number of planes requested.
* @requested_sizes: array with the size of the planes.
+ * @first_index: index of the first created buffer, all allocated buffers have
+ * indices in the range [first..first+count]
*
* Videobuf2 core helper to implement VIDIOC_CREATE_BUFS() operation. It is
* called internally by VB2 by an API-specific handler, like
@@ -819,7 +821,8 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
unsigned int flags, unsigned int *count,
unsigned int requested_planes,
- const unsigned int requested_sizes[]);
+ const unsigned int requested_sizes[],
+ unsigned int *first_index);
/**
* vb2_core_prepare_buf() - Pass ownership of a buffer from userspace
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 52/56] media: core: Add bitmap manage bufs array entries
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:31 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:31 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Add a bitmap field to know which of bufs array entries are
used or not.
Remove no more used num_buffers field from queue structure.
Use bitmap_find_next_zero_area() to find the first possible
range when creating new buffers to fill the gaps.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 42 +++++++++++++++----
include/media/videobuf2-core.h | 15 ++++---
2 files changed, 42 insertions(+), 15 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 2c8cf479a962..6e88406fcae9 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -416,11 +416,12 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
*/
static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
{
- WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
+ WARN_ON(index >= q->max_num_buffers || test_bit(index, q->bufs_bitmap));
q->bufs[index] = vb;
vb->index = index;
vb->vb2_queue = q;
+ set_bit(index, q->bufs_bitmap);
}
/**
@@ -429,6 +430,7 @@ static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, uns
*/
static void vb2_queue_remove_buffer(struct vb2_buffer *vb)
{
+ clear_bit(vb->index, vb->vb2_queue->bufs_bitmap);
vb->vb2_queue->bufs[vb->index] = NULL;
vb->vb2_queue = NULL;
}
@@ -450,11 +452,12 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
unsigned long index;
int ret;
- /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
+ /* Ensure that vb2_get_num_buffers(q) + num_buffers is no more than q->max_num_buffers */
num_buffers = min_t(unsigned int, num_buffers,
q->max_num_buffers - vb2_get_num_buffers(q));
- index = vb2_get_num_buffers(q);
+ index = bitmap_find_next_zero_area(q->bufs_bitmap, q->max_num_buffers,
+ 0, num_buffers, 0);
*first_index = index;
@@ -656,7 +659,6 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
kfree(vb);
}
- q->num_buffers -= buffers;
if (!vb2_get_num_buffers(q)) {
q->memory = VB2_MEMORY_UNKNOWN;
INIT_LIST_HEAD(&q->queued_list);
@@ -874,6 +876,14 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
if (!q->bufs)
ret = -ENOMEM;
+
+ if (!q->bufs_bitmap)
+ q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
+ if (!q->bufs_bitmap) {
+ ret = -ENOMEM;
+ kfree(q->bufs);
+ q->bufs = NULL;
+ }
q->memory = memory;
mutex_unlock(&q->mmap_lock);
if (ret)
@@ -943,7 +953,6 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
}
mutex_lock(&q->mmap_lock);
- q->num_buffers = allocated_buffers;
if (ret < 0) {
/*
@@ -970,6 +979,10 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
mutex_lock(&q->mmap_lock);
q->memory = VB2_MEMORY_UNKNOWN;
mutex_unlock(&q->mmap_lock);
+ kfree(q->bufs);
+ q->bufs = NULL;
+ bitmap_free(q->bufs_bitmap);
+ q->bufs_bitmap = NULL;
return ret;
}
EXPORT_SYMBOL_GPL(vb2_core_reqbufs);
@@ -1006,9 +1019,19 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
q->memory = memory;
if (!q->bufs)
q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
- if (!q->bufs)
+ if (!q->bufs) {
ret = -ENOMEM;
+ goto unlock;
+ }
+ if (!q->bufs_bitmap)
+ q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
+ if (!q->bufs_bitmap) {
+ ret = -ENOMEM;
+ kfree(q->bufs);
+ q->bufs = NULL;
+ }
mutex_unlock(&q->mmap_lock);
+unlock:
if (ret)
return ret;
q->waiting_for_buffers = !q->is_output;
@@ -1070,7 +1093,6 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
}
mutex_lock(&q->mmap_lock);
- q->num_buffers += allocated_buffers;
if (ret < 0) {
/*
@@ -2549,7 +2571,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
__vb2_queue_free(q, q->max_num_buffers);
kfree(q->bufs);
q->bufs = NULL;
- q->num_buffers = 0;
+ bitmap_free(q->bufs_bitmap);
+ q->bufs_bitmap = NULL;
+
mutex_unlock(&q->mmap_lock);
}
EXPORT_SYMBOL_GPL(vb2_core_queue_release);
@@ -2904,7 +2928,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
* Check if we need to dequeue the buffer.
*/
index = fileio->cur_index;
- if (index >= q->num_buffers) {
+ if (!test_bit(index, q->bufs_bitmap)) {
struct vb2_buffer *b;
/*
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 6986ff4b77cd..288477075a0e 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -346,7 +346,7 @@ struct vb2_buffer {
* describes the requested number of planes and sizes\[\]
* contains the requested plane sizes. In this case
* \*num_buffers are being allocated additionally to
- * q->num_buffers. If either \*num_planes or the requested
+ * queue buffers. If either \*num_planes or the requested
* sizes are invalid callback must return %-EINVAL.
* @wait_prepare: release any locks taken while calling vb2 functions;
* it is called before an ioctl needs to wait for a new
@@ -557,7 +557,7 @@ struct vb2_buf_ops {
* @memory: current memory type used
* @dma_dir: DMA mapping direction.
* @bufs: videobuf2 buffer structures
- * @num_buffers: number of allocated/used buffers
+ * @bufs_bitmap: bitmap to manage bufs entries.
* @max_num_buffers: upper limit of number of allocated/used buffers
* @queued_list: list of buffers currently queued from userspace
* @queued_count: number of buffers queued and ready for streaming.
@@ -621,7 +621,7 @@ struct vb2_queue {
unsigned int memory;
enum dma_data_direction dma_dir;
struct vb2_buffer **bufs;
- unsigned int num_buffers;
+ unsigned long *bufs_bitmap;
unsigned int max_num_buffers;
struct list_head queued_list;
@@ -1150,7 +1150,10 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
*/
static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
{
- return q->num_buffers;
+ if (!q->bufs_bitmap)
+ return 0;
+
+ return bitmap_weight(q->bufs_bitmap, q->max_num_buffers);
}
/**
@@ -1253,13 +1256,13 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
unsigned int index)
{
- if (!q->bufs)
+ if (!q->bufs_bitmap)
return NULL;
if (index >= q->max_num_buffers)
return NULL;
- if (index < q->num_buffers)
+ if (test_bit(index, q->bufs_bitmap))
return q->bufs[index];
return NULL;
}
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 52/56] media: core: Add bitmap manage bufs array entries
@ 2023-10-31 16:31 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:31 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Add a bitmap field to know which of bufs array entries are
used or not.
Remove no more used num_buffers field from queue structure.
Use bitmap_find_next_zero_area() to find the first possible
range when creating new buffers to fill the gaps.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 42 +++++++++++++++----
include/media/videobuf2-core.h | 15 ++++---
2 files changed, 42 insertions(+), 15 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 2c8cf479a962..6e88406fcae9 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -416,11 +416,12 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
*/
static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
{
- WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
+ WARN_ON(index >= q->max_num_buffers || test_bit(index, q->bufs_bitmap));
q->bufs[index] = vb;
vb->index = index;
vb->vb2_queue = q;
+ set_bit(index, q->bufs_bitmap);
}
/**
@@ -429,6 +430,7 @@ static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, uns
*/
static void vb2_queue_remove_buffer(struct vb2_buffer *vb)
{
+ clear_bit(vb->index, vb->vb2_queue->bufs_bitmap);
vb->vb2_queue->bufs[vb->index] = NULL;
vb->vb2_queue = NULL;
}
@@ -450,11 +452,12 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
unsigned long index;
int ret;
- /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
+ /* Ensure that vb2_get_num_buffers(q) + num_buffers is no more than q->max_num_buffers */
num_buffers = min_t(unsigned int, num_buffers,
q->max_num_buffers - vb2_get_num_buffers(q));
- index = vb2_get_num_buffers(q);
+ index = bitmap_find_next_zero_area(q->bufs_bitmap, q->max_num_buffers,
+ 0, num_buffers, 0);
*first_index = index;
@@ -656,7 +659,6 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
kfree(vb);
}
- q->num_buffers -= buffers;
if (!vb2_get_num_buffers(q)) {
q->memory = VB2_MEMORY_UNKNOWN;
INIT_LIST_HEAD(&q->queued_list);
@@ -874,6 +876,14 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
if (!q->bufs)
ret = -ENOMEM;
+
+ if (!q->bufs_bitmap)
+ q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
+ if (!q->bufs_bitmap) {
+ ret = -ENOMEM;
+ kfree(q->bufs);
+ q->bufs = NULL;
+ }
q->memory = memory;
mutex_unlock(&q->mmap_lock);
if (ret)
@@ -943,7 +953,6 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
}
mutex_lock(&q->mmap_lock);
- q->num_buffers = allocated_buffers;
if (ret < 0) {
/*
@@ -970,6 +979,10 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
mutex_lock(&q->mmap_lock);
q->memory = VB2_MEMORY_UNKNOWN;
mutex_unlock(&q->mmap_lock);
+ kfree(q->bufs);
+ q->bufs = NULL;
+ bitmap_free(q->bufs_bitmap);
+ q->bufs_bitmap = NULL;
return ret;
}
EXPORT_SYMBOL_GPL(vb2_core_reqbufs);
@@ -1006,9 +1019,19 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
q->memory = memory;
if (!q->bufs)
q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
- if (!q->bufs)
+ if (!q->bufs) {
ret = -ENOMEM;
+ goto unlock;
+ }
+ if (!q->bufs_bitmap)
+ q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
+ if (!q->bufs_bitmap) {
+ ret = -ENOMEM;
+ kfree(q->bufs);
+ q->bufs = NULL;
+ }
mutex_unlock(&q->mmap_lock);
+unlock:
if (ret)
return ret;
q->waiting_for_buffers = !q->is_output;
@@ -1070,7 +1093,6 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
}
mutex_lock(&q->mmap_lock);
- q->num_buffers += allocated_buffers;
if (ret < 0) {
/*
@@ -2549,7 +2571,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
__vb2_queue_free(q, q->max_num_buffers);
kfree(q->bufs);
q->bufs = NULL;
- q->num_buffers = 0;
+ bitmap_free(q->bufs_bitmap);
+ q->bufs_bitmap = NULL;
+
mutex_unlock(&q->mmap_lock);
}
EXPORT_SYMBOL_GPL(vb2_core_queue_release);
@@ -2904,7 +2928,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
* Check if we need to dequeue the buffer.
*/
index = fileio->cur_index;
- if (index >= q->num_buffers) {
+ if (!test_bit(index, q->bufs_bitmap)) {
struct vb2_buffer *b;
/*
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 6986ff4b77cd..288477075a0e 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -346,7 +346,7 @@ struct vb2_buffer {
* describes the requested number of planes and sizes\[\]
* contains the requested plane sizes. In this case
* \*num_buffers are being allocated additionally to
- * q->num_buffers. If either \*num_planes or the requested
+ * queue buffers. If either \*num_planes or the requested
* sizes are invalid callback must return %-EINVAL.
* @wait_prepare: release any locks taken while calling vb2 functions;
* it is called before an ioctl needs to wait for a new
@@ -557,7 +557,7 @@ struct vb2_buf_ops {
* @memory: current memory type used
* @dma_dir: DMA mapping direction.
* @bufs: videobuf2 buffer structures
- * @num_buffers: number of allocated/used buffers
+ * @bufs_bitmap: bitmap to manage bufs entries.
* @max_num_buffers: upper limit of number of allocated/used buffers
* @queued_list: list of buffers currently queued from userspace
* @queued_count: number of buffers queued and ready for streaming.
@@ -621,7 +621,7 @@ struct vb2_queue {
unsigned int memory;
enum dma_data_direction dma_dir;
struct vb2_buffer **bufs;
- unsigned int num_buffers;
+ unsigned long *bufs_bitmap;
unsigned int max_num_buffers;
struct list_head queued_list;
@@ -1150,7 +1150,10 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
*/
static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
{
- return q->num_buffers;
+ if (!q->bufs_bitmap)
+ return 0;
+
+ return bitmap_weight(q->bufs_bitmap, q->max_num_buffers);
}
/**
@@ -1253,13 +1256,13 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
unsigned int index)
{
- if (!q->bufs)
+ if (!q->bufs_bitmap)
return NULL;
if (index >= q->max_num_buffers)
return NULL;
- if (index < q->num_buffers)
+ if (test_bit(index, q->bufs_bitmap))
return q->bufs[index];
return NULL;
}
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 52/56] media: core: Add bitmap manage bufs array entries
@ 2023-10-31 16:31 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:31 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Add a bitmap field to know which of bufs array entries are
used or not.
Remove no more used num_buffers field from queue structure.
Use bitmap_find_next_zero_area() to find the first possible
range when creating new buffers to fill the gaps.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 42 +++++++++++++++----
include/media/videobuf2-core.h | 15 ++++---
2 files changed, 42 insertions(+), 15 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 2c8cf479a962..6e88406fcae9 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -416,11 +416,12 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
*/
static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
{
- WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
+ WARN_ON(index >= q->max_num_buffers || test_bit(index, q->bufs_bitmap));
q->bufs[index] = vb;
vb->index = index;
vb->vb2_queue = q;
+ set_bit(index, q->bufs_bitmap);
}
/**
@@ -429,6 +430,7 @@ static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, uns
*/
static void vb2_queue_remove_buffer(struct vb2_buffer *vb)
{
+ clear_bit(vb->index, vb->vb2_queue->bufs_bitmap);
vb->vb2_queue->bufs[vb->index] = NULL;
vb->vb2_queue = NULL;
}
@@ -450,11 +452,12 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
unsigned long index;
int ret;
- /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
+ /* Ensure that vb2_get_num_buffers(q) + num_buffers is no more than q->max_num_buffers */
num_buffers = min_t(unsigned int, num_buffers,
q->max_num_buffers - vb2_get_num_buffers(q));
- index = vb2_get_num_buffers(q);
+ index = bitmap_find_next_zero_area(q->bufs_bitmap, q->max_num_buffers,
+ 0, num_buffers, 0);
*first_index = index;
@@ -656,7 +659,6 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
kfree(vb);
}
- q->num_buffers -= buffers;
if (!vb2_get_num_buffers(q)) {
q->memory = VB2_MEMORY_UNKNOWN;
INIT_LIST_HEAD(&q->queued_list);
@@ -874,6 +876,14 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
if (!q->bufs)
ret = -ENOMEM;
+
+ if (!q->bufs_bitmap)
+ q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
+ if (!q->bufs_bitmap) {
+ ret = -ENOMEM;
+ kfree(q->bufs);
+ q->bufs = NULL;
+ }
q->memory = memory;
mutex_unlock(&q->mmap_lock);
if (ret)
@@ -943,7 +953,6 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
}
mutex_lock(&q->mmap_lock);
- q->num_buffers = allocated_buffers;
if (ret < 0) {
/*
@@ -970,6 +979,10 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
mutex_lock(&q->mmap_lock);
q->memory = VB2_MEMORY_UNKNOWN;
mutex_unlock(&q->mmap_lock);
+ kfree(q->bufs);
+ q->bufs = NULL;
+ bitmap_free(q->bufs_bitmap);
+ q->bufs_bitmap = NULL;
return ret;
}
EXPORT_SYMBOL_GPL(vb2_core_reqbufs);
@@ -1006,9 +1019,19 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
q->memory = memory;
if (!q->bufs)
q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
- if (!q->bufs)
+ if (!q->bufs) {
ret = -ENOMEM;
+ goto unlock;
+ }
+ if (!q->bufs_bitmap)
+ q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
+ if (!q->bufs_bitmap) {
+ ret = -ENOMEM;
+ kfree(q->bufs);
+ q->bufs = NULL;
+ }
mutex_unlock(&q->mmap_lock);
+unlock:
if (ret)
return ret;
q->waiting_for_buffers = !q->is_output;
@@ -1070,7 +1093,6 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
}
mutex_lock(&q->mmap_lock);
- q->num_buffers += allocated_buffers;
if (ret < 0) {
/*
@@ -2549,7 +2571,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
__vb2_queue_free(q, q->max_num_buffers);
kfree(q->bufs);
q->bufs = NULL;
- q->num_buffers = 0;
+ bitmap_free(q->bufs_bitmap);
+ q->bufs_bitmap = NULL;
+
mutex_unlock(&q->mmap_lock);
}
EXPORT_SYMBOL_GPL(vb2_core_queue_release);
@@ -2904,7 +2928,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
* Check if we need to dequeue the buffer.
*/
index = fileio->cur_index;
- if (index >= q->num_buffers) {
+ if (!test_bit(index, q->bufs_bitmap)) {
struct vb2_buffer *b;
/*
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 6986ff4b77cd..288477075a0e 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -346,7 +346,7 @@ struct vb2_buffer {
* describes the requested number of planes and sizes\[\]
* contains the requested plane sizes. In this case
* \*num_buffers are being allocated additionally to
- * q->num_buffers. If either \*num_planes or the requested
+ * queue buffers. If either \*num_planes or the requested
* sizes are invalid callback must return %-EINVAL.
* @wait_prepare: release any locks taken while calling vb2 functions;
* it is called before an ioctl needs to wait for a new
@@ -557,7 +557,7 @@ struct vb2_buf_ops {
* @memory: current memory type used
* @dma_dir: DMA mapping direction.
* @bufs: videobuf2 buffer structures
- * @num_buffers: number of allocated/used buffers
+ * @bufs_bitmap: bitmap to manage bufs entries.
* @max_num_buffers: upper limit of number of allocated/used buffers
* @queued_list: list of buffers currently queued from userspace
* @queued_count: number of buffers queued and ready for streaming.
@@ -621,7 +621,7 @@ struct vb2_queue {
unsigned int memory;
enum dma_data_direction dma_dir;
struct vb2_buffer **bufs;
- unsigned int num_buffers;
+ unsigned long *bufs_bitmap;
unsigned int max_num_buffers;
struct list_head queued_list;
@@ -1150,7 +1150,10 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
*/
static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
{
- return q->num_buffers;
+ if (!q->bufs_bitmap)
+ return 0;
+
+ return bitmap_weight(q->bufs_bitmap, q->max_num_buffers);
}
/**
@@ -1253,13 +1256,13 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
unsigned int index)
{
- if (!q->bufs)
+ if (!q->bufs_bitmap)
return NULL;
if (index >= q->max_num_buffers)
return NULL;
- if (index < q->num_buffers)
+ if (test_bit(index, q->bufs_bitmap))
return q->bufs[index];
return NULL;
}
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 53/56] media: core: Free range of buffers
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:31 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:31 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Improve __vb2_queue_free() and __vb2_free_mem() to free
range of buffers and not only the last few buffers.
Intoduce starting index to be flexible on range and change the loops
according to this parameters.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 59 +++++++++----------
1 file changed, 28 insertions(+), 31 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 6e88406fcae9..010a8bca0240 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -519,15 +519,13 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
/*
* __vb2_free_mem() - release all video buffer memory for a given queue
*/
-static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
+static void __vb2_free_mem(struct vb2_queue *q, unsigned int start, unsigned int count)
{
- unsigned int buffer;
+ unsigned int i;
struct vb2_buffer *vb;
- unsigned int q_num_buffers = vb2_get_num_buffers(q);
- for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
- ++buffer) {
- vb = vb2_get_buffer(q, buffer);
+ for (i = start; i < q->max_num_buffers && i < start + count; i++) {
+ vb = vb2_get_buffer(q, i);
if (!vb)
continue;
@@ -542,35 +540,35 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
}
/*
- * __vb2_queue_free() - free buffers at the end of the queue - video memory and
+ * __vb2_queue_free() - free count buffers from start index of the queue - video memory and
* related information, if no buffers are left return the queue to an
* uninitialized state. Might be called even if the queue has already been freed.
*/
-static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
+static void __vb2_queue_free(struct vb2_queue *q, unsigned int start, unsigned int count)
{
- unsigned int buffer;
- unsigned int q_num_buffers = vb2_get_num_buffers(q);
+ unsigned int i;
lockdep_assert_held(&q->mmap_lock);
/* Call driver-provided cleanup function for each buffer, if provided */
- for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
- ++buffer) {
- struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+ for (i = start; i < q->max_num_buffers && i < start + count; i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(q, i);
- if (vb && vb->planes[0].mem_priv)
+ if (!vb)
+ continue;
+ if (vb->planes[0].mem_priv)
call_void_vb_qop(vb, buf_cleanup, vb);
}
/* Release video buffer memory */
- __vb2_free_mem(q, buffers);
+ __vb2_free_mem(q, start, count);
#ifdef CONFIG_VIDEO_ADV_DEBUG
/*
* Check that all the calls were balanced during the life-time of this
* queue. If not then dump the counters to the kernel log.
*/
- if (q_num_buffers) {
+ if (vb2_get_num_buffers(q)) {
bool unbalanced = q->cnt_start_streaming != q->cnt_stop_streaming ||
q->cnt_prepare_streaming != q->cnt_unprepare_streaming ||
q->cnt_wait_prepare != q->cnt_wait_finish;
@@ -596,8 +594,8 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
q->cnt_stop_streaming = 0;
q->cnt_unprepare_streaming = 0;
}
- for (buffer = 0; buffer < vb2_get_num_buffers(q); buffer++) {
- struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+ for (i = start; i < q->max_num_buffers && i < start + count; i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(q, i);
bool unbalanced;
if (!vb)
@@ -614,7 +612,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
if (unbalanced) {
pr_info("unbalanced counters for queue %p, buffer %d:\n",
- q, buffer);
+ q, i);
if (vb->cnt_buf_init != vb->cnt_buf_cleanup)
pr_info(" buf_init: %u buf_cleanup: %u\n",
vb->cnt_buf_init, vb->cnt_buf_cleanup);
@@ -648,9 +646,8 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
#endif
/* Free vb2 buffers */
- for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
- ++buffer) {
- struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+ for (i = start; i < q->max_num_buffers && i < start + count; i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(q, i);
if (!vb)
continue;
@@ -690,7 +687,7 @@ EXPORT_SYMBOL(vb2_buffer_in_use);
static bool __buffers_in_use(struct vb2_queue *q)
{
unsigned int buffer;
- for (buffer = 0; buffer < vb2_get_num_buffers(q); ++buffer) {
+ for (buffer = 0; buffer < q->max_num_buffers; ++buffer) {
struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
if (!vb)
@@ -850,7 +847,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
* queued without ever calling STREAMON.
*/
__vb2_queue_cancel(q);
- __vb2_queue_free(q, q_num_bufs);
+ __vb2_queue_free(q, 0, q->max_num_buffers);
mutex_unlock(&q->mmap_lock);
/*
@@ -960,7 +957,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
* from already queued buffers and it will reset q->memory to
* VB2_MEMORY_UNKNOWN.
*/
- __vb2_queue_free(q, allocated_buffers);
+ __vb2_queue_free(q, first_index, allocated_buffers);
mutex_unlock(&q->mmap_lock);
return ret;
}
@@ -1000,7 +997,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
bool no_previous_buffers = !q_num_bufs;
int ret = 0;
- if (q->num_buffers == q->max_num_buffers) {
+ if (q_num_bufs == q->max_num_buffers) {
dprintk(q, 1, "maximum number of buffers already allocated\n");
return -ENOBUFS;
}
@@ -1100,7 +1097,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
* from already queued buffers and it will reset q->memory to
* VB2_MEMORY_UNKNOWN.
*/
- __vb2_queue_free(q, allocated_buffers);
+ __vb2_queue_free(q, *first_index, allocated_buffers);
mutex_unlock(&q->mmap_lock);
return -ENOMEM;
}
@@ -1714,7 +1711,7 @@ static int vb2_start_streaming(struct vb2_queue *q)
* Forcefully reclaim buffers if the driver did not
* correctly return them to vb2.
*/
- for (i = 0; i < vb2_get_num_buffers(q); ++i) {
+ for (i = 0; i < q->max_num_buffers; ++i) {
vb = vb2_get_buffer(q, i);
if (!vb)
@@ -2120,7 +2117,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* to vb2 in stop_streaming().
*/
if (WARN_ON(atomic_read(&q->owned_by_drv_count))) {
- for (i = 0; i < vb2_get_num_buffers(q); i++) {
+ for (i = 0; i < q->max_num_buffers; i++) {
struct vb2_buffer *vb = vb2_get_buffer(q, i);
if (!vb)
@@ -2164,7 +2161,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* call to __fill_user_buffer() after buf_finish(). That order can't
* be changed, so we can't move the buf_finish() to __vb2_dqbuf().
*/
- for (i = 0; i < vb2_get_num_buffers(q); i++) {
+ for (i = 0; i < q->max_num_buffers; i++) {
struct vb2_buffer *vb;
struct media_request *req;
@@ -2568,7 +2565,7 @@ void vb2_core_queue_release(struct vb2_queue *q)
__vb2_cleanup_fileio(q);
__vb2_queue_cancel(q);
mutex_lock(&q->mmap_lock);
- __vb2_queue_free(q, q->max_num_buffers);
+ __vb2_queue_free(q, 0, q->max_num_buffers);
kfree(q->bufs);
q->bufs = NULL;
bitmap_free(q->bufs_bitmap);
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 53/56] media: core: Free range of buffers
@ 2023-10-31 16:31 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:31 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Improve __vb2_queue_free() and __vb2_free_mem() to free
range of buffers and not only the last few buffers.
Intoduce starting index to be flexible on range and change the loops
according to this parameters.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 59 +++++++++----------
1 file changed, 28 insertions(+), 31 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 6e88406fcae9..010a8bca0240 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -519,15 +519,13 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
/*
* __vb2_free_mem() - release all video buffer memory for a given queue
*/
-static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
+static void __vb2_free_mem(struct vb2_queue *q, unsigned int start, unsigned int count)
{
- unsigned int buffer;
+ unsigned int i;
struct vb2_buffer *vb;
- unsigned int q_num_buffers = vb2_get_num_buffers(q);
- for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
- ++buffer) {
- vb = vb2_get_buffer(q, buffer);
+ for (i = start; i < q->max_num_buffers && i < start + count; i++) {
+ vb = vb2_get_buffer(q, i);
if (!vb)
continue;
@@ -542,35 +540,35 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
}
/*
- * __vb2_queue_free() - free buffers at the end of the queue - video memory and
+ * __vb2_queue_free() - free count buffers from start index of the queue - video memory and
* related information, if no buffers are left return the queue to an
* uninitialized state. Might be called even if the queue has already been freed.
*/
-static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
+static void __vb2_queue_free(struct vb2_queue *q, unsigned int start, unsigned int count)
{
- unsigned int buffer;
- unsigned int q_num_buffers = vb2_get_num_buffers(q);
+ unsigned int i;
lockdep_assert_held(&q->mmap_lock);
/* Call driver-provided cleanup function for each buffer, if provided */
- for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
- ++buffer) {
- struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+ for (i = start; i < q->max_num_buffers && i < start + count; i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(q, i);
- if (vb && vb->planes[0].mem_priv)
+ if (!vb)
+ continue;
+ if (vb->planes[0].mem_priv)
call_void_vb_qop(vb, buf_cleanup, vb);
}
/* Release video buffer memory */
- __vb2_free_mem(q, buffers);
+ __vb2_free_mem(q, start, count);
#ifdef CONFIG_VIDEO_ADV_DEBUG
/*
* Check that all the calls were balanced during the life-time of this
* queue. If not then dump the counters to the kernel log.
*/
- if (q_num_buffers) {
+ if (vb2_get_num_buffers(q)) {
bool unbalanced = q->cnt_start_streaming != q->cnt_stop_streaming ||
q->cnt_prepare_streaming != q->cnt_unprepare_streaming ||
q->cnt_wait_prepare != q->cnt_wait_finish;
@@ -596,8 +594,8 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
q->cnt_stop_streaming = 0;
q->cnt_unprepare_streaming = 0;
}
- for (buffer = 0; buffer < vb2_get_num_buffers(q); buffer++) {
- struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+ for (i = start; i < q->max_num_buffers && i < start + count; i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(q, i);
bool unbalanced;
if (!vb)
@@ -614,7 +612,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
if (unbalanced) {
pr_info("unbalanced counters for queue %p, buffer %d:\n",
- q, buffer);
+ q, i);
if (vb->cnt_buf_init != vb->cnt_buf_cleanup)
pr_info(" buf_init: %u buf_cleanup: %u\n",
vb->cnt_buf_init, vb->cnt_buf_cleanup);
@@ -648,9 +646,8 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
#endif
/* Free vb2 buffers */
- for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
- ++buffer) {
- struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+ for (i = start; i < q->max_num_buffers && i < start + count; i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(q, i);
if (!vb)
continue;
@@ -690,7 +687,7 @@ EXPORT_SYMBOL(vb2_buffer_in_use);
static bool __buffers_in_use(struct vb2_queue *q)
{
unsigned int buffer;
- for (buffer = 0; buffer < vb2_get_num_buffers(q); ++buffer) {
+ for (buffer = 0; buffer < q->max_num_buffers; ++buffer) {
struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
if (!vb)
@@ -850,7 +847,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
* queued without ever calling STREAMON.
*/
__vb2_queue_cancel(q);
- __vb2_queue_free(q, q_num_bufs);
+ __vb2_queue_free(q, 0, q->max_num_buffers);
mutex_unlock(&q->mmap_lock);
/*
@@ -960,7 +957,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
* from already queued buffers and it will reset q->memory to
* VB2_MEMORY_UNKNOWN.
*/
- __vb2_queue_free(q, allocated_buffers);
+ __vb2_queue_free(q, first_index, allocated_buffers);
mutex_unlock(&q->mmap_lock);
return ret;
}
@@ -1000,7 +997,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
bool no_previous_buffers = !q_num_bufs;
int ret = 0;
- if (q->num_buffers == q->max_num_buffers) {
+ if (q_num_bufs == q->max_num_buffers) {
dprintk(q, 1, "maximum number of buffers already allocated\n");
return -ENOBUFS;
}
@@ -1100,7 +1097,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
* from already queued buffers and it will reset q->memory to
* VB2_MEMORY_UNKNOWN.
*/
- __vb2_queue_free(q, allocated_buffers);
+ __vb2_queue_free(q, *first_index, allocated_buffers);
mutex_unlock(&q->mmap_lock);
return -ENOMEM;
}
@@ -1714,7 +1711,7 @@ static int vb2_start_streaming(struct vb2_queue *q)
* Forcefully reclaim buffers if the driver did not
* correctly return them to vb2.
*/
- for (i = 0; i < vb2_get_num_buffers(q); ++i) {
+ for (i = 0; i < q->max_num_buffers; ++i) {
vb = vb2_get_buffer(q, i);
if (!vb)
@@ -2120,7 +2117,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* to vb2 in stop_streaming().
*/
if (WARN_ON(atomic_read(&q->owned_by_drv_count))) {
- for (i = 0; i < vb2_get_num_buffers(q); i++) {
+ for (i = 0; i < q->max_num_buffers; i++) {
struct vb2_buffer *vb = vb2_get_buffer(q, i);
if (!vb)
@@ -2164,7 +2161,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* call to __fill_user_buffer() after buf_finish(). That order can't
* be changed, so we can't move the buf_finish() to __vb2_dqbuf().
*/
- for (i = 0; i < vb2_get_num_buffers(q); i++) {
+ for (i = 0; i < q->max_num_buffers; i++) {
struct vb2_buffer *vb;
struct media_request *req;
@@ -2568,7 +2565,7 @@ void vb2_core_queue_release(struct vb2_queue *q)
__vb2_cleanup_fileio(q);
__vb2_queue_cancel(q);
mutex_lock(&q->mmap_lock);
- __vb2_queue_free(q, q->max_num_buffers);
+ __vb2_queue_free(q, 0, q->max_num_buffers);
kfree(q->bufs);
q->bufs = NULL;
bitmap_free(q->bufs_bitmap);
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 53/56] media: core: Free range of buffers
@ 2023-10-31 16:31 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:31 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Improve __vb2_queue_free() and __vb2_free_mem() to free
range of buffers and not only the last few buffers.
Intoduce starting index to be flexible on range and change the loops
according to this parameters.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/common/videobuf2/videobuf2-core.c | 59 +++++++++----------
1 file changed, 28 insertions(+), 31 deletions(-)
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 6e88406fcae9..010a8bca0240 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -519,15 +519,13 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
/*
* __vb2_free_mem() - release all video buffer memory for a given queue
*/
-static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
+static void __vb2_free_mem(struct vb2_queue *q, unsigned int start, unsigned int count)
{
- unsigned int buffer;
+ unsigned int i;
struct vb2_buffer *vb;
- unsigned int q_num_buffers = vb2_get_num_buffers(q);
- for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
- ++buffer) {
- vb = vb2_get_buffer(q, buffer);
+ for (i = start; i < q->max_num_buffers && i < start + count; i++) {
+ vb = vb2_get_buffer(q, i);
if (!vb)
continue;
@@ -542,35 +540,35 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
}
/*
- * __vb2_queue_free() - free buffers at the end of the queue - video memory and
+ * __vb2_queue_free() - free count buffers from start index of the queue - video memory and
* related information, if no buffers are left return the queue to an
* uninitialized state. Might be called even if the queue has already been freed.
*/
-static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
+static void __vb2_queue_free(struct vb2_queue *q, unsigned int start, unsigned int count)
{
- unsigned int buffer;
- unsigned int q_num_buffers = vb2_get_num_buffers(q);
+ unsigned int i;
lockdep_assert_held(&q->mmap_lock);
/* Call driver-provided cleanup function for each buffer, if provided */
- for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
- ++buffer) {
- struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+ for (i = start; i < q->max_num_buffers && i < start + count; i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(q, i);
- if (vb && vb->planes[0].mem_priv)
+ if (!vb)
+ continue;
+ if (vb->planes[0].mem_priv)
call_void_vb_qop(vb, buf_cleanup, vb);
}
/* Release video buffer memory */
- __vb2_free_mem(q, buffers);
+ __vb2_free_mem(q, start, count);
#ifdef CONFIG_VIDEO_ADV_DEBUG
/*
* Check that all the calls were balanced during the life-time of this
* queue. If not then dump the counters to the kernel log.
*/
- if (q_num_buffers) {
+ if (vb2_get_num_buffers(q)) {
bool unbalanced = q->cnt_start_streaming != q->cnt_stop_streaming ||
q->cnt_prepare_streaming != q->cnt_unprepare_streaming ||
q->cnt_wait_prepare != q->cnt_wait_finish;
@@ -596,8 +594,8 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
q->cnt_stop_streaming = 0;
q->cnt_unprepare_streaming = 0;
}
- for (buffer = 0; buffer < vb2_get_num_buffers(q); buffer++) {
- struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+ for (i = start; i < q->max_num_buffers && i < start + count; i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(q, i);
bool unbalanced;
if (!vb)
@@ -614,7 +612,7 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
if (unbalanced) {
pr_info("unbalanced counters for queue %p, buffer %d:\n",
- q, buffer);
+ q, i);
if (vb->cnt_buf_init != vb->cnt_buf_cleanup)
pr_info(" buf_init: %u buf_cleanup: %u\n",
vb->cnt_buf_init, vb->cnt_buf_cleanup);
@@ -648,9 +646,8 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
#endif
/* Free vb2 buffers */
- for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
- ++buffer) {
- struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
+ for (i = start; i < q->max_num_buffers && i < start + count; i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(q, i);
if (!vb)
continue;
@@ -690,7 +687,7 @@ EXPORT_SYMBOL(vb2_buffer_in_use);
static bool __buffers_in_use(struct vb2_queue *q)
{
unsigned int buffer;
- for (buffer = 0; buffer < vb2_get_num_buffers(q); ++buffer) {
+ for (buffer = 0; buffer < q->max_num_buffers; ++buffer) {
struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
if (!vb)
@@ -850,7 +847,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
* queued without ever calling STREAMON.
*/
__vb2_queue_cancel(q);
- __vb2_queue_free(q, q_num_bufs);
+ __vb2_queue_free(q, 0, q->max_num_buffers);
mutex_unlock(&q->mmap_lock);
/*
@@ -960,7 +957,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
* from already queued buffers and it will reset q->memory to
* VB2_MEMORY_UNKNOWN.
*/
- __vb2_queue_free(q, allocated_buffers);
+ __vb2_queue_free(q, first_index, allocated_buffers);
mutex_unlock(&q->mmap_lock);
return ret;
}
@@ -1000,7 +997,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
bool no_previous_buffers = !q_num_bufs;
int ret = 0;
- if (q->num_buffers == q->max_num_buffers) {
+ if (q_num_bufs == q->max_num_buffers) {
dprintk(q, 1, "maximum number of buffers already allocated\n");
return -ENOBUFS;
}
@@ -1100,7 +1097,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
* from already queued buffers and it will reset q->memory to
* VB2_MEMORY_UNKNOWN.
*/
- __vb2_queue_free(q, allocated_buffers);
+ __vb2_queue_free(q, *first_index, allocated_buffers);
mutex_unlock(&q->mmap_lock);
return -ENOMEM;
}
@@ -1714,7 +1711,7 @@ static int vb2_start_streaming(struct vb2_queue *q)
* Forcefully reclaim buffers if the driver did not
* correctly return them to vb2.
*/
- for (i = 0; i < vb2_get_num_buffers(q); ++i) {
+ for (i = 0; i < q->max_num_buffers; ++i) {
vb = vb2_get_buffer(q, i);
if (!vb)
@@ -2120,7 +2117,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* to vb2 in stop_streaming().
*/
if (WARN_ON(atomic_read(&q->owned_by_drv_count))) {
- for (i = 0; i < vb2_get_num_buffers(q); i++) {
+ for (i = 0; i < q->max_num_buffers; i++) {
struct vb2_buffer *vb = vb2_get_buffer(q, i);
if (!vb)
@@ -2164,7 +2161,7 @@ static void __vb2_queue_cancel(struct vb2_queue *q)
* call to __fill_user_buffer() after buf_finish(). That order can't
* be changed, so we can't move the buf_finish() to __vb2_dqbuf().
*/
- for (i = 0; i < vb2_get_num_buffers(q); i++) {
+ for (i = 0; i < q->max_num_buffers; i++) {
struct vb2_buffer *vb;
struct media_request *req;
@@ -2568,7 +2565,7 @@ void vb2_core_queue_release(struct vb2_queue *q)
__vb2_cleanup_fileio(q);
__vb2_queue_cancel(q);
mutex_lock(&q->mmap_lock);
- __vb2_queue_free(q, q->max_num_buffers);
+ __vb2_queue_free(q, 0, q->max_num_buffers);
kfree(q->bufs);
q->bufs = NULL;
bitmap_free(q->bufs_bitmap);
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:31 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:31 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
The number of buffers to delete in given by count field of
struct v4l2_delete_buffers and the range start at the index
specified in the same structure.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../userspace-api/media/v4l/user-func.rst | 1 +
.../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
.../media/v4l/vidioc-reqbufs.rst | 1 +
.../media/common/videobuf2/videobuf2-core.c | 30 +++++++
.../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
drivers/media/v4l2-core/v4l2-dev.c | 1 +
drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
include/media/v4l2-ioctl.h | 4 +
include/media/videobuf2-core.h | 12 +++
include/media/videobuf2-v4l2.h | 13 +++
include/uapi/linux/videodev2.h | 17 ++++
11 files changed, 196 insertions(+)
create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
index 15ff0bf7bbe6..3fd567695477 100644
--- a/Documentation/userspace-api/media/v4l/user-func.rst
+++ b/Documentation/userspace-api/media/v4l/user-func.rst
@@ -17,6 +17,7 @@ Function Reference
vidioc-dbg-g-chip-info
vidioc-dbg-g-register
vidioc-decoder-cmd
+ vidioc-delete-bufs
vidioc-dqevent
vidioc-dv-timings-cap
vidioc-encoder-cmd
diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
new file mode 100644
index 000000000000..4791df1395d6
--- /dev/null
+++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
@@ -0,0 +1,80 @@
+.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
+.. c:namespace:: V4L
+
+.. _VIDIOC_DELETE_BUFS:
+
+************************
+ioctl VIDIOC_DELETE_BUFS
+************************
+
+Name
+====
+
+VIDIOC_DELETE_BUFS - Deletes buffers from a queue
+Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
+capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
+are invoked.
+
+Synopsis
+========
+
+.. c:macro:: VIDIOC_DELETE_BUFs
+
+``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
+
+Arguments
+=========
+
+``fd``
+ File descriptor returned by :c:func:`open()`.
+
+``argp``
+ Pointer to struct :c:type:`v4l2_delete_buffers`.
+
+Description
+===========
+
+Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
+delete buffers from a queue.
+
+.. c:type:: v4l2_delete_buffers
+
+.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
+
+.. flat-table:: struct v4l2_delete_buffers
+ :header-rows: 0
+ :stub-columns: 0
+ :widths: 1 1 2
+
+ * - __u32
+ - ``index``
+ - The starting buffer index to delete.
+ * - __u32
+ - ``count``
+ - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
+ All buffers in this range must be valid and in DEQUEUED state.
+ In error case errno is set to ``EINVAL`` error code and index returns the index of
+ the invalid buffer.
+ If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
+ * - __u32
+ - ``type``
+ - Type of the stream or buffers, this is the same as the struct
+ :c:type:`v4l2_format` ``type`` field. See
+ :c:type:`v4l2_buf_type` for valid values.
+ * - __u32
+ - ``reserved``\ [13]
+ - A place holder for future extensions. Drivers and applications
+ must set the array to zero.
+
+Return Value
+============
+
+On success 0 is returned, on error -1 and the ``errno`` variable is set
+appropriately. The generic error codes are described at the
+:ref:`Generic Error Codes <gen-errors>` chapter.
+
+EBUSY
+ File I/O is in progress.
+
+EINVAL
+ The buffer ``index`` doesn't exist in the queue.
diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
index 0b3a41a45d05..14d4a49c2945 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
@@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
.. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
.. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
.. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
+.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
.. raw:: latex
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 010a8bca0240..7068930a0ba6 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
}
EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
+int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
+{
+ unsigned int i, ret = 0;
+
+ if (start == 0 && count == 0)
+ return 0;
+
+ mutex_lock(&q->mmap_lock);
+
+ for (i = start; i < start + count && i < q->max_num_buffers; i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(q, i);
+
+ if (!vb) {
+ ret = -EINVAL;
+ goto unlock;
+ }
+ if (vb->state != VB2_BUF_STATE_DEQUEUED) {
+ ret = -EINVAL;
+ goto unlock;
+ }
+ }
+ __vb2_queue_free(q, start, count);
+ dprintk(q, 2, "buffers deleted\n");
+
+unlock:
+ mutex_unlock(&q->mmap_lock);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
+
/*
* vb2_start_streaming() - Attempt to start streaming.
* @q: videobuf2 queue
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index 56daf3b5b2ba..f003618efbc1 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
if (q->supports_requests)
*caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
#endif
+ if (q->supports_delete_bufs)
+ *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
}
static void validate_memory_flags(struct vb2_queue *q,
@@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
}
EXPORT_SYMBOL_GPL(vb2_prepare_buf);
+int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
+{
+ return vb2_core_delete_bufs(q, d->index, d->count);
+}
+EXPORT_SYMBOL_GPL(vb2_delete_bufs);
+
int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
{
unsigned requested_planes = 1;
@@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
/* vb2 ioctl helpers */
+int vb2_ioctl_delete_bufs(struct file *file, void *priv,
+ struct v4l2_delete_buffers *p)
+{
+ struct video_device *vdev = video_devdata(file);
+
+ if (vb2_queue_is_busy(vdev->queue, file))
+ return -EBUSY;
+
+ return vb2_delete_bufs(vdev->queue, p);
+}
+EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
+
int vb2_ioctl_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *p)
{
diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
index f81279492682..215654fd6581 100644
--- a/drivers/media/v4l2-core/v4l2-dev.c
+++ b/drivers/media/v4l2-core/v4l2-dev.c
@@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
+ SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
}
if (is_vid || is_vbi || is_meta) {
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 4d90424cbfc4..e9dcf439f9f3 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
v4l_print_format(&p->format, write_only);
}
+static void v4l_print_delete_buffers(const void *arg, bool write_only)
+{
+ const struct v4l2_delete_buffers *p = arg;
+
+ pr_cont("index=%u, count=%u\n", p->index, p->count);
+}
+
static void v4l_print_streamparm(const void *arg, bool write_only)
{
const struct v4l2_streamparm *p = arg;
@@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
}
+static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
+ struct file *file, void *fh, void *arg)
+{
+ struct v4l2_delete_buffers *delete = arg;
+ int ret = check_fmt(file, delete->type);
+
+ return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
+}
+
static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
struct file *file, void *fh, void *arg)
{
@@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
+ IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
};
#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
index edb733f21604..55afbde54211 100644
--- a/include/media/v4l2-ioctl.h
+++ b/include/media/v4l2-ioctl.h
@@ -163,6 +163,8 @@ struct v4l2_fh;
* :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
* @vidioc_prepare_buf: pointer to the function that implements
* :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
+ * @vidioc_delete_bufs: pointer to the function that implements
+ * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
* @vidioc_overlay: pointer to the function that implements
* :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
* @vidioc_g_fbuf: pointer to the function that implements
@@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
struct v4l2_create_buffers *b);
int (*vidioc_prepare_buf)(struct file *file, void *fh,
struct v4l2_buffer *b);
+ int (*vidioc_delete_bufs)(struct file *file, void *fh,
+ struct v4l2_delete_buffers *d);
int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
int (*vidioc_g_fbuf)(struct file *file, void *fh,
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 288477075a0e..db3bd986624e 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -507,6 +507,7 @@ struct vb2_buf_ops {
* @supports_requests: this queue supports the Request API.
* @requires_requests: this queue requires the Request API. If this is set to 1,
* then supports_requests must be set to 1 as well.
+ * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
* @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
* time this is called. Set to 0 when the queue is canceled.
* If this is 1, then you cannot queue buffers from a request.
@@ -595,6 +596,7 @@ struct vb2_queue {
unsigned int quirk_poll_must_check_waiting_for_buffers:1;
unsigned int supports_requests:1;
unsigned int requires_requests:1;
+ unsigned int supports_delete_bufs:1;
unsigned int uses_qbuf:1;
unsigned int uses_requests:1;
unsigned int allow_cache_hints:1;
@@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
*/
int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
+/**
+ * vb2_core_delete_bufs() -
+ * @q: pointer to &struct vb2_queue with videobuf2 queue.
+ * @start: first index of the range of buffers to delete.
+ * @count: number of buffers to delete.
+ *
+ * Return: returns zero on success; an error code otherwise.
+ */
+int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
+
/**
* vb2_core_qbuf() - Queue a buffer from userspace
*
diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
index 5a845887850b..79cea8459f52 100644
--- a/include/media/videobuf2-v4l2.h
+++ b/include/media/videobuf2-v4l2.h
@@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
*/
int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
struct v4l2_buffer *b);
+/**
+ * vb2_delete_bufs() - Delete buffers from the queue
+ *
+ * @q: pointer to &struct vb2_queue with videobuf2 queue.
+ * @d: delete parameter, passed from userspace to
+ * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
+ *
+ * The return values from this function are intended to be directly returned
+ * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
+ */
+int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
/**
* vb2_qbuf() - Queue a buffer from userspace
@@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
int vb2_ioctl_expbuf(struct file *file, void *priv,
struct v4l2_exportbuffer *p);
+int vb2_ioctl_delete_bufs(struct file *file, void *priv,
+ struct v4l2_delete_buffers *p);
/* struct v4l2_file_operations helpers */
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 13ddb5abf584..96e105149906 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
#define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
#define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
#define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
+#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
/**
* struct v4l2_plane - plane info for multi-planar buffers
@@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
__u32 reserved[5];
};
+/**
+ * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
+ * @index: the first buffer to be deleted
+ * @count: number of buffers to delete
+ * @type: enum v4l2_buf_type
+ * @reserved: future extensions
+ */
+struct v4l2_delete_buffers {
+ __u32 index;
+ __u32 count;
+ __u32 type;
+ __u32 reserved[13];
+};
+
/*
* I O C T L C O D E S F O R V I D E O D E V I C E S
*
@@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
#define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
#define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
+#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
+
/* Reminder: when adding new ioctls please add support for them to
drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
@ 2023-10-31 16:31 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:31 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
The number of buffers to delete in given by count field of
struct v4l2_delete_buffers and the range start at the index
specified in the same structure.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../userspace-api/media/v4l/user-func.rst | 1 +
.../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
.../media/v4l/vidioc-reqbufs.rst | 1 +
.../media/common/videobuf2/videobuf2-core.c | 30 +++++++
.../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
drivers/media/v4l2-core/v4l2-dev.c | 1 +
drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
include/media/v4l2-ioctl.h | 4 +
include/media/videobuf2-core.h | 12 +++
include/media/videobuf2-v4l2.h | 13 +++
include/uapi/linux/videodev2.h | 17 ++++
11 files changed, 196 insertions(+)
create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
index 15ff0bf7bbe6..3fd567695477 100644
--- a/Documentation/userspace-api/media/v4l/user-func.rst
+++ b/Documentation/userspace-api/media/v4l/user-func.rst
@@ -17,6 +17,7 @@ Function Reference
vidioc-dbg-g-chip-info
vidioc-dbg-g-register
vidioc-decoder-cmd
+ vidioc-delete-bufs
vidioc-dqevent
vidioc-dv-timings-cap
vidioc-encoder-cmd
diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
new file mode 100644
index 000000000000..4791df1395d6
--- /dev/null
+++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
@@ -0,0 +1,80 @@
+.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
+.. c:namespace:: V4L
+
+.. _VIDIOC_DELETE_BUFS:
+
+************************
+ioctl VIDIOC_DELETE_BUFS
+************************
+
+Name
+====
+
+VIDIOC_DELETE_BUFS - Deletes buffers from a queue
+Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
+capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
+are invoked.
+
+Synopsis
+========
+
+.. c:macro:: VIDIOC_DELETE_BUFs
+
+``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
+
+Arguments
+=========
+
+``fd``
+ File descriptor returned by :c:func:`open()`.
+
+``argp``
+ Pointer to struct :c:type:`v4l2_delete_buffers`.
+
+Description
+===========
+
+Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
+delete buffers from a queue.
+
+.. c:type:: v4l2_delete_buffers
+
+.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
+
+.. flat-table:: struct v4l2_delete_buffers
+ :header-rows: 0
+ :stub-columns: 0
+ :widths: 1 1 2
+
+ * - __u32
+ - ``index``
+ - The starting buffer index to delete.
+ * - __u32
+ - ``count``
+ - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
+ All buffers in this range must be valid and in DEQUEUED state.
+ In error case errno is set to ``EINVAL`` error code and index returns the index of
+ the invalid buffer.
+ If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
+ * - __u32
+ - ``type``
+ - Type of the stream or buffers, this is the same as the struct
+ :c:type:`v4l2_format` ``type`` field. See
+ :c:type:`v4l2_buf_type` for valid values.
+ * - __u32
+ - ``reserved``\ [13]
+ - A place holder for future extensions. Drivers and applications
+ must set the array to zero.
+
+Return Value
+============
+
+On success 0 is returned, on error -1 and the ``errno`` variable is set
+appropriately. The generic error codes are described at the
+:ref:`Generic Error Codes <gen-errors>` chapter.
+
+EBUSY
+ File I/O is in progress.
+
+EINVAL
+ The buffer ``index`` doesn't exist in the queue.
diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
index 0b3a41a45d05..14d4a49c2945 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
@@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
.. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
.. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
.. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
+.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
.. raw:: latex
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 010a8bca0240..7068930a0ba6 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
}
EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
+int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
+{
+ unsigned int i, ret = 0;
+
+ if (start == 0 && count == 0)
+ return 0;
+
+ mutex_lock(&q->mmap_lock);
+
+ for (i = start; i < start + count && i < q->max_num_buffers; i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(q, i);
+
+ if (!vb) {
+ ret = -EINVAL;
+ goto unlock;
+ }
+ if (vb->state != VB2_BUF_STATE_DEQUEUED) {
+ ret = -EINVAL;
+ goto unlock;
+ }
+ }
+ __vb2_queue_free(q, start, count);
+ dprintk(q, 2, "buffers deleted\n");
+
+unlock:
+ mutex_unlock(&q->mmap_lock);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
+
/*
* vb2_start_streaming() - Attempt to start streaming.
* @q: videobuf2 queue
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index 56daf3b5b2ba..f003618efbc1 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
if (q->supports_requests)
*caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
#endif
+ if (q->supports_delete_bufs)
+ *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
}
static void validate_memory_flags(struct vb2_queue *q,
@@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
}
EXPORT_SYMBOL_GPL(vb2_prepare_buf);
+int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
+{
+ return vb2_core_delete_bufs(q, d->index, d->count);
+}
+EXPORT_SYMBOL_GPL(vb2_delete_bufs);
+
int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
{
unsigned requested_planes = 1;
@@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
/* vb2 ioctl helpers */
+int vb2_ioctl_delete_bufs(struct file *file, void *priv,
+ struct v4l2_delete_buffers *p)
+{
+ struct video_device *vdev = video_devdata(file);
+
+ if (vb2_queue_is_busy(vdev->queue, file))
+ return -EBUSY;
+
+ return vb2_delete_bufs(vdev->queue, p);
+}
+EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
+
int vb2_ioctl_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *p)
{
diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
index f81279492682..215654fd6581 100644
--- a/drivers/media/v4l2-core/v4l2-dev.c
+++ b/drivers/media/v4l2-core/v4l2-dev.c
@@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
+ SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
}
if (is_vid || is_vbi || is_meta) {
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 4d90424cbfc4..e9dcf439f9f3 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
v4l_print_format(&p->format, write_only);
}
+static void v4l_print_delete_buffers(const void *arg, bool write_only)
+{
+ const struct v4l2_delete_buffers *p = arg;
+
+ pr_cont("index=%u, count=%u\n", p->index, p->count);
+}
+
static void v4l_print_streamparm(const void *arg, bool write_only)
{
const struct v4l2_streamparm *p = arg;
@@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
}
+static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
+ struct file *file, void *fh, void *arg)
+{
+ struct v4l2_delete_buffers *delete = arg;
+ int ret = check_fmt(file, delete->type);
+
+ return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
+}
+
static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
struct file *file, void *fh, void *arg)
{
@@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
+ IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
};
#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
index edb733f21604..55afbde54211 100644
--- a/include/media/v4l2-ioctl.h
+++ b/include/media/v4l2-ioctl.h
@@ -163,6 +163,8 @@ struct v4l2_fh;
* :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
* @vidioc_prepare_buf: pointer to the function that implements
* :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
+ * @vidioc_delete_bufs: pointer to the function that implements
+ * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
* @vidioc_overlay: pointer to the function that implements
* :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
* @vidioc_g_fbuf: pointer to the function that implements
@@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
struct v4l2_create_buffers *b);
int (*vidioc_prepare_buf)(struct file *file, void *fh,
struct v4l2_buffer *b);
+ int (*vidioc_delete_bufs)(struct file *file, void *fh,
+ struct v4l2_delete_buffers *d);
int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
int (*vidioc_g_fbuf)(struct file *file, void *fh,
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 288477075a0e..db3bd986624e 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -507,6 +507,7 @@ struct vb2_buf_ops {
* @supports_requests: this queue supports the Request API.
* @requires_requests: this queue requires the Request API. If this is set to 1,
* then supports_requests must be set to 1 as well.
+ * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
* @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
* time this is called. Set to 0 when the queue is canceled.
* If this is 1, then you cannot queue buffers from a request.
@@ -595,6 +596,7 @@ struct vb2_queue {
unsigned int quirk_poll_must_check_waiting_for_buffers:1;
unsigned int supports_requests:1;
unsigned int requires_requests:1;
+ unsigned int supports_delete_bufs:1;
unsigned int uses_qbuf:1;
unsigned int uses_requests:1;
unsigned int allow_cache_hints:1;
@@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
*/
int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
+/**
+ * vb2_core_delete_bufs() -
+ * @q: pointer to &struct vb2_queue with videobuf2 queue.
+ * @start: first index of the range of buffers to delete.
+ * @count: number of buffers to delete.
+ *
+ * Return: returns zero on success; an error code otherwise.
+ */
+int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
+
/**
* vb2_core_qbuf() - Queue a buffer from userspace
*
diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
index 5a845887850b..79cea8459f52 100644
--- a/include/media/videobuf2-v4l2.h
+++ b/include/media/videobuf2-v4l2.h
@@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
*/
int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
struct v4l2_buffer *b);
+/**
+ * vb2_delete_bufs() - Delete buffers from the queue
+ *
+ * @q: pointer to &struct vb2_queue with videobuf2 queue.
+ * @d: delete parameter, passed from userspace to
+ * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
+ *
+ * The return values from this function are intended to be directly returned
+ * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
+ */
+int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
/**
* vb2_qbuf() - Queue a buffer from userspace
@@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
int vb2_ioctl_expbuf(struct file *file, void *priv,
struct v4l2_exportbuffer *p);
+int vb2_ioctl_delete_bufs(struct file *file, void *priv,
+ struct v4l2_delete_buffers *p);
/* struct v4l2_file_operations helpers */
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 13ddb5abf584..96e105149906 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
#define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
#define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
#define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
+#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
/**
* struct v4l2_plane - plane info for multi-planar buffers
@@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
__u32 reserved[5];
};
+/**
+ * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
+ * @index: the first buffer to be deleted
+ * @count: number of buffers to delete
+ * @type: enum v4l2_buf_type
+ * @reserved: future extensions
+ */
+struct v4l2_delete_buffers {
+ __u32 index;
+ __u32 count;
+ __u32 type;
+ __u32 reserved[13];
+};
+
/*
* I O C T L C O D E S F O R V I D E O D E V I C E S
*
@@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
#define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
#define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
+#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
+
/* Reminder: when adding new ioctls please add support for them to
drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
@ 2023-10-31 16:31 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:31 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
The number of buffers to delete in given by count field of
struct v4l2_delete_buffers and the range start at the index
specified in the same structure.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../userspace-api/media/v4l/user-func.rst | 1 +
.../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
.../media/v4l/vidioc-reqbufs.rst | 1 +
.../media/common/videobuf2/videobuf2-core.c | 30 +++++++
.../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
drivers/media/v4l2-core/v4l2-dev.c | 1 +
drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
include/media/v4l2-ioctl.h | 4 +
include/media/videobuf2-core.h | 12 +++
include/media/videobuf2-v4l2.h | 13 +++
include/uapi/linux/videodev2.h | 17 ++++
11 files changed, 196 insertions(+)
create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
index 15ff0bf7bbe6..3fd567695477 100644
--- a/Documentation/userspace-api/media/v4l/user-func.rst
+++ b/Documentation/userspace-api/media/v4l/user-func.rst
@@ -17,6 +17,7 @@ Function Reference
vidioc-dbg-g-chip-info
vidioc-dbg-g-register
vidioc-decoder-cmd
+ vidioc-delete-bufs
vidioc-dqevent
vidioc-dv-timings-cap
vidioc-encoder-cmd
diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
new file mode 100644
index 000000000000..4791df1395d6
--- /dev/null
+++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
@@ -0,0 +1,80 @@
+.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
+.. c:namespace:: V4L
+
+.. _VIDIOC_DELETE_BUFS:
+
+************************
+ioctl VIDIOC_DELETE_BUFS
+************************
+
+Name
+====
+
+VIDIOC_DELETE_BUFS - Deletes buffers from a queue
+Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
+capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
+are invoked.
+
+Synopsis
+========
+
+.. c:macro:: VIDIOC_DELETE_BUFs
+
+``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
+
+Arguments
+=========
+
+``fd``
+ File descriptor returned by :c:func:`open()`.
+
+``argp``
+ Pointer to struct :c:type:`v4l2_delete_buffers`.
+
+Description
+===========
+
+Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
+delete buffers from a queue.
+
+.. c:type:: v4l2_delete_buffers
+
+.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
+
+.. flat-table:: struct v4l2_delete_buffers
+ :header-rows: 0
+ :stub-columns: 0
+ :widths: 1 1 2
+
+ * - __u32
+ - ``index``
+ - The starting buffer index to delete.
+ * - __u32
+ - ``count``
+ - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
+ All buffers in this range must be valid and in DEQUEUED state.
+ In error case errno is set to ``EINVAL`` error code and index returns the index of
+ the invalid buffer.
+ If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
+ * - __u32
+ - ``type``
+ - Type of the stream or buffers, this is the same as the struct
+ :c:type:`v4l2_format` ``type`` field. See
+ :c:type:`v4l2_buf_type` for valid values.
+ * - __u32
+ - ``reserved``\ [13]
+ - A place holder for future extensions. Drivers and applications
+ must set the array to zero.
+
+Return Value
+============
+
+On success 0 is returned, on error -1 and the ``errno`` variable is set
+appropriately. The generic error codes are described at the
+:ref:`Generic Error Codes <gen-errors>` chapter.
+
+EBUSY
+ File I/O is in progress.
+
+EINVAL
+ The buffer ``index`` doesn't exist in the queue.
diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
index 0b3a41a45d05..14d4a49c2945 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
@@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
.. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
.. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
.. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
+.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
.. raw:: latex
diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
index 010a8bca0240..7068930a0ba6 100644
--- a/drivers/media/common/videobuf2/videobuf2-core.c
+++ b/drivers/media/common/videobuf2/videobuf2-core.c
@@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
}
EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
+int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
+{
+ unsigned int i, ret = 0;
+
+ if (start == 0 && count == 0)
+ return 0;
+
+ mutex_lock(&q->mmap_lock);
+
+ for (i = start; i < start + count && i < q->max_num_buffers; i++) {
+ struct vb2_buffer *vb = vb2_get_buffer(q, i);
+
+ if (!vb) {
+ ret = -EINVAL;
+ goto unlock;
+ }
+ if (vb->state != VB2_BUF_STATE_DEQUEUED) {
+ ret = -EINVAL;
+ goto unlock;
+ }
+ }
+ __vb2_queue_free(q, start, count);
+ dprintk(q, 2, "buffers deleted\n");
+
+unlock:
+ mutex_unlock(&q->mmap_lock);
+ return ret;
+}
+EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
+
/*
* vb2_start_streaming() - Attempt to start streaming.
* @q: videobuf2 queue
diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
index 56daf3b5b2ba..f003618efbc1 100644
--- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
+++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
@@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
if (q->supports_requests)
*caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
#endif
+ if (q->supports_delete_bufs)
+ *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
}
static void validate_memory_flags(struct vb2_queue *q,
@@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
}
EXPORT_SYMBOL_GPL(vb2_prepare_buf);
+int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
+{
+ return vb2_core_delete_bufs(q, d->index, d->count);
+}
+EXPORT_SYMBOL_GPL(vb2_delete_bufs);
+
int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
{
unsigned requested_planes = 1;
@@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
/* vb2 ioctl helpers */
+int vb2_ioctl_delete_bufs(struct file *file, void *priv,
+ struct v4l2_delete_buffers *p)
+{
+ struct video_device *vdev = video_devdata(file);
+
+ if (vb2_queue_is_busy(vdev->queue, file))
+ return -EBUSY;
+
+ return vb2_delete_bufs(vdev->queue, p);
+}
+EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
+
int vb2_ioctl_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *p)
{
diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
index f81279492682..215654fd6581 100644
--- a/drivers/media/v4l2-core/v4l2-dev.c
+++ b/drivers/media/v4l2-core/v4l2-dev.c
@@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
+ SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
}
if (is_vid || is_vbi || is_meta) {
diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
index 4d90424cbfc4..e9dcf439f9f3 100644
--- a/drivers/media/v4l2-core/v4l2-ioctl.c
+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
@@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
v4l_print_format(&p->format, write_only);
}
+static void v4l_print_delete_buffers(const void *arg, bool write_only)
+{
+ const struct v4l2_delete_buffers *p = arg;
+
+ pr_cont("index=%u, count=%u\n", p->index, p->count);
+}
+
static void v4l_print_streamparm(const void *arg, bool write_only)
{
const struct v4l2_streamparm *p = arg;
@@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
}
+static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
+ struct file *file, void *fh, void *arg)
+{
+ struct v4l2_delete_buffers *delete = arg;
+ int ret = check_fmt(file, delete->type);
+
+ return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
+}
+
static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
struct file *file, void *fh, void *arg)
{
@@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
+ IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
};
#define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
index edb733f21604..55afbde54211 100644
--- a/include/media/v4l2-ioctl.h
+++ b/include/media/v4l2-ioctl.h
@@ -163,6 +163,8 @@ struct v4l2_fh;
* :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
* @vidioc_prepare_buf: pointer to the function that implements
* :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
+ * @vidioc_delete_bufs: pointer to the function that implements
+ * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
* @vidioc_overlay: pointer to the function that implements
* :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
* @vidioc_g_fbuf: pointer to the function that implements
@@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
struct v4l2_create_buffers *b);
int (*vidioc_prepare_buf)(struct file *file, void *fh,
struct v4l2_buffer *b);
+ int (*vidioc_delete_bufs)(struct file *file, void *fh,
+ struct v4l2_delete_buffers *d);
int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
int (*vidioc_g_fbuf)(struct file *file, void *fh,
diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
index 288477075a0e..db3bd986624e 100644
--- a/include/media/videobuf2-core.h
+++ b/include/media/videobuf2-core.h
@@ -507,6 +507,7 @@ struct vb2_buf_ops {
* @supports_requests: this queue supports the Request API.
* @requires_requests: this queue requires the Request API. If this is set to 1,
* then supports_requests must be set to 1 as well.
+ * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
* @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
* time this is called. Set to 0 when the queue is canceled.
* If this is 1, then you cannot queue buffers from a request.
@@ -595,6 +596,7 @@ struct vb2_queue {
unsigned int quirk_poll_must_check_waiting_for_buffers:1;
unsigned int supports_requests:1;
unsigned int requires_requests:1;
+ unsigned int supports_delete_bufs:1;
unsigned int uses_qbuf:1;
unsigned int uses_requests:1;
unsigned int allow_cache_hints:1;
@@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
*/
int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
+/**
+ * vb2_core_delete_bufs() -
+ * @q: pointer to &struct vb2_queue with videobuf2 queue.
+ * @start: first index of the range of buffers to delete.
+ * @count: number of buffers to delete.
+ *
+ * Return: returns zero on success; an error code otherwise.
+ */
+int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
+
/**
* vb2_core_qbuf() - Queue a buffer from userspace
*
diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
index 5a845887850b..79cea8459f52 100644
--- a/include/media/videobuf2-v4l2.h
+++ b/include/media/videobuf2-v4l2.h
@@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
*/
int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
struct v4l2_buffer *b);
+/**
+ * vb2_delete_bufs() - Delete buffers from the queue
+ *
+ * @q: pointer to &struct vb2_queue with videobuf2 queue.
+ * @d: delete parameter, passed from userspace to
+ * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
+ *
+ * The return values from this function are intended to be directly returned
+ * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
+ */
+int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
/**
* vb2_qbuf() - Queue a buffer from userspace
@@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
int vb2_ioctl_expbuf(struct file *file, void *priv,
struct v4l2_exportbuffer *p);
+int vb2_ioctl_delete_bufs(struct file *file, void *priv,
+ struct v4l2_delete_buffers *p);
/* struct v4l2_file_operations helpers */
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 13ddb5abf584..96e105149906 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
#define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
#define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
#define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
+#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
/**
* struct v4l2_plane - plane info for multi-planar buffers
@@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
__u32 reserved[5];
};
+/**
+ * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
+ * @index: the first buffer to be deleted
+ * @count: number of buffers to delete
+ * @type: enum v4l2_buf_type
+ * @reserved: future extensions
+ */
+struct v4l2_delete_buffers {
+ __u32 index;
+ __u32 count;
+ __u32 type;
+ __u32 reserved[13];
+};
+
/*
* I O C T L C O D E S F O R V I D E O D E V I C E S
*
@@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
#define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
#define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
+#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
+
/* Reminder: when adding new ioctls please add support for them to
drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 55/56] media: v4l2: Add mem2mem helpers for DELETE_BUFS ioctl
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:31 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:31 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Create v4l2-mem2mem helpers for VIDIOC_DELETE_BUFS ioctl.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/platform/verisilicon/hantro_drv.c | 1 +
.../media/platform/verisilicon/hantro_v4l2.c | 1 +
drivers/media/test-drivers/vim2m.c | 2 ++
drivers/media/v4l2-core/v4l2-mem2mem.c | 20 +++++++++++++++++++
include/media/v4l2-mem2mem.h | 12 +++++++++++
5 files changed, 36 insertions(+)
diff --git a/drivers/media/platform/verisilicon/hantro_drv.c b/drivers/media/platform/verisilicon/hantro_drv.c
index 7f5b82eb6649..c8fed313c36f 100644
--- a/drivers/media/platform/verisilicon/hantro_drv.c
+++ b/drivers/media/platform/verisilicon/hantro_drv.c
@@ -248,6 +248,7 @@ queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = &ctx->dev->vpu_mutex;
dst_vq->dev = ctx->dev->v4l2_dev.dev;
+ src_vq->supports_delete_bufs = true;
return vb2_queue_init(dst_vq);
}
diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
index 27a1e77cca38..0fd1c2fc78c8 100644
--- a/drivers/media/platform/verisilicon/hantro_v4l2.c
+++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
@@ -756,6 +756,7 @@ const struct v4l2_ioctl_ops hantro_ioctl_ops = {
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
+ .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
diff --git a/drivers/media/test-drivers/vim2m.c b/drivers/media/test-drivers/vim2m.c
index 3e3b424b4860..17213ce42059 100644
--- a/drivers/media/test-drivers/vim2m.c
+++ b/drivers/media/test-drivers/vim2m.c
@@ -960,6 +960,7 @@ static const struct v4l2_ioctl_ops vim2m_ioctl_ops = {
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
+ .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
@@ -1133,6 +1134,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
dst_vq->mem_ops = &vb2_vmalloc_memops;
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = &ctx->vb_mutex;
+ dst_vq->supports_delete_bufs = true;
return vb2_queue_init(dst_vq);
}
diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c
index 0cc30397fbad..d1d59943680f 100644
--- a/drivers/media/v4l2-core/v4l2-mem2mem.c
+++ b/drivers/media/v4l2-core/v4l2-mem2mem.c
@@ -831,6 +831,17 @@ int v4l2_m2m_prepare_buf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
}
EXPORT_SYMBOL_GPL(v4l2_m2m_prepare_buf);
+int v4l2_m2m_delete_bufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
+ struct v4l2_delete_buffers *d)
+{
+ struct vb2_queue *vq;
+
+ vq = v4l2_m2m_get_vq(m2m_ctx, d->type);
+
+ return vb2_delete_bufs(vq, d);
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_delete_bufs);
+
int v4l2_m2m_create_bufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
struct v4l2_create_buffers *create)
{
@@ -1377,6 +1388,15 @@ int v4l2_m2m_ioctl_create_bufs(struct file *file, void *priv,
}
EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_create_bufs);
+int v4l2_m2m_ioctl_delete_bufs(struct file *file, void *priv,
+ struct v4l2_delete_buffers *d)
+{
+ struct v4l2_fh *fh = file->private_data;
+
+ return v4l2_m2m_delete_bufs(file, fh->m2m_ctx, d);
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_delete_bufs);
+
int v4l2_m2m_ioctl_querybuf(struct file *file, void *priv,
struct v4l2_buffer *buf)
{
diff --git a/include/media/v4l2-mem2mem.h b/include/media/v4l2-mem2mem.h
index d6c8eb2b5201..161f85c42dc8 100644
--- a/include/media/v4l2-mem2mem.h
+++ b/include/media/v4l2-mem2mem.h
@@ -381,6 +381,16 @@ int v4l2_m2m_dqbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
int v4l2_m2m_prepare_buf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
struct v4l2_buffer *buf);
+/**
+ * v4l2_m2m_delete_bufs() - delete buffers from the queue
+ *
+ * @file: pointer to struct &file
+ * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx
+ * @d: pointer to struct &v4l2_delete_buffers
+ */
+int v4l2_m2m_delete_bufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
+ struct v4l2_delete_buffers *d);
+
/**
* v4l2_m2m_create_bufs() - create a source or destination buffer, depending
* on the type
@@ -860,6 +870,8 @@ int v4l2_m2m_ioctl_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *rb);
int v4l2_m2m_ioctl_create_bufs(struct file *file, void *fh,
struct v4l2_create_buffers *create);
+int v4l2_m2m_ioctl_delete_bufs(struct file *file, void *priv,
+ struct v4l2_delete_buffers *d);
int v4l2_m2m_ioctl_querybuf(struct file *file, void *fh,
struct v4l2_buffer *buf);
int v4l2_m2m_ioctl_expbuf(struct file *file, void *fh,
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 55/56] media: v4l2: Add mem2mem helpers for DELETE_BUFS ioctl
@ 2023-10-31 16:31 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:31 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Create v4l2-mem2mem helpers for VIDIOC_DELETE_BUFS ioctl.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/platform/verisilicon/hantro_drv.c | 1 +
.../media/platform/verisilicon/hantro_v4l2.c | 1 +
drivers/media/test-drivers/vim2m.c | 2 ++
drivers/media/v4l2-core/v4l2-mem2mem.c | 20 +++++++++++++++++++
include/media/v4l2-mem2mem.h | 12 +++++++++++
5 files changed, 36 insertions(+)
diff --git a/drivers/media/platform/verisilicon/hantro_drv.c b/drivers/media/platform/verisilicon/hantro_drv.c
index 7f5b82eb6649..c8fed313c36f 100644
--- a/drivers/media/platform/verisilicon/hantro_drv.c
+++ b/drivers/media/platform/verisilicon/hantro_drv.c
@@ -248,6 +248,7 @@ queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = &ctx->dev->vpu_mutex;
dst_vq->dev = ctx->dev->v4l2_dev.dev;
+ src_vq->supports_delete_bufs = true;
return vb2_queue_init(dst_vq);
}
diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
index 27a1e77cca38..0fd1c2fc78c8 100644
--- a/drivers/media/platform/verisilicon/hantro_v4l2.c
+++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
@@ -756,6 +756,7 @@ const struct v4l2_ioctl_ops hantro_ioctl_ops = {
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
+ .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
diff --git a/drivers/media/test-drivers/vim2m.c b/drivers/media/test-drivers/vim2m.c
index 3e3b424b4860..17213ce42059 100644
--- a/drivers/media/test-drivers/vim2m.c
+++ b/drivers/media/test-drivers/vim2m.c
@@ -960,6 +960,7 @@ static const struct v4l2_ioctl_ops vim2m_ioctl_ops = {
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
+ .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
@@ -1133,6 +1134,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
dst_vq->mem_ops = &vb2_vmalloc_memops;
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = &ctx->vb_mutex;
+ dst_vq->supports_delete_bufs = true;
return vb2_queue_init(dst_vq);
}
diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c
index 0cc30397fbad..d1d59943680f 100644
--- a/drivers/media/v4l2-core/v4l2-mem2mem.c
+++ b/drivers/media/v4l2-core/v4l2-mem2mem.c
@@ -831,6 +831,17 @@ int v4l2_m2m_prepare_buf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
}
EXPORT_SYMBOL_GPL(v4l2_m2m_prepare_buf);
+int v4l2_m2m_delete_bufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
+ struct v4l2_delete_buffers *d)
+{
+ struct vb2_queue *vq;
+
+ vq = v4l2_m2m_get_vq(m2m_ctx, d->type);
+
+ return vb2_delete_bufs(vq, d);
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_delete_bufs);
+
int v4l2_m2m_create_bufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
struct v4l2_create_buffers *create)
{
@@ -1377,6 +1388,15 @@ int v4l2_m2m_ioctl_create_bufs(struct file *file, void *priv,
}
EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_create_bufs);
+int v4l2_m2m_ioctl_delete_bufs(struct file *file, void *priv,
+ struct v4l2_delete_buffers *d)
+{
+ struct v4l2_fh *fh = file->private_data;
+
+ return v4l2_m2m_delete_bufs(file, fh->m2m_ctx, d);
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_delete_bufs);
+
int v4l2_m2m_ioctl_querybuf(struct file *file, void *priv,
struct v4l2_buffer *buf)
{
diff --git a/include/media/v4l2-mem2mem.h b/include/media/v4l2-mem2mem.h
index d6c8eb2b5201..161f85c42dc8 100644
--- a/include/media/v4l2-mem2mem.h
+++ b/include/media/v4l2-mem2mem.h
@@ -381,6 +381,16 @@ int v4l2_m2m_dqbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
int v4l2_m2m_prepare_buf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
struct v4l2_buffer *buf);
+/**
+ * v4l2_m2m_delete_bufs() - delete buffers from the queue
+ *
+ * @file: pointer to struct &file
+ * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx
+ * @d: pointer to struct &v4l2_delete_buffers
+ */
+int v4l2_m2m_delete_bufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
+ struct v4l2_delete_buffers *d);
+
/**
* v4l2_m2m_create_bufs() - create a source or destination buffer, depending
* on the type
@@ -860,6 +870,8 @@ int v4l2_m2m_ioctl_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *rb);
int v4l2_m2m_ioctl_create_bufs(struct file *file, void *fh,
struct v4l2_create_buffers *create);
+int v4l2_m2m_ioctl_delete_bufs(struct file *file, void *priv,
+ struct v4l2_delete_buffers *d);
int v4l2_m2m_ioctl_querybuf(struct file *file, void *fh,
struct v4l2_buffer *buf);
int v4l2_m2m_ioctl_expbuf(struct file *file, void *fh,
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 55/56] media: v4l2: Add mem2mem helpers for DELETE_BUFS ioctl
@ 2023-10-31 16:31 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:31 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Create v4l2-mem2mem helpers for VIDIOC_DELETE_BUFS ioctl.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
.../media/platform/verisilicon/hantro_drv.c | 1 +
.../media/platform/verisilicon/hantro_v4l2.c | 1 +
drivers/media/test-drivers/vim2m.c | 2 ++
drivers/media/v4l2-core/v4l2-mem2mem.c | 20 +++++++++++++++++++
include/media/v4l2-mem2mem.h | 12 +++++++++++
5 files changed, 36 insertions(+)
diff --git a/drivers/media/platform/verisilicon/hantro_drv.c b/drivers/media/platform/verisilicon/hantro_drv.c
index 7f5b82eb6649..c8fed313c36f 100644
--- a/drivers/media/platform/verisilicon/hantro_drv.c
+++ b/drivers/media/platform/verisilicon/hantro_drv.c
@@ -248,6 +248,7 @@ queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = &ctx->dev->vpu_mutex;
dst_vq->dev = ctx->dev->v4l2_dev.dev;
+ src_vq->supports_delete_bufs = true;
return vb2_queue_init(dst_vq);
}
diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
index 27a1e77cca38..0fd1c2fc78c8 100644
--- a/drivers/media/platform/verisilicon/hantro_v4l2.c
+++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
@@ -756,6 +756,7 @@ const struct v4l2_ioctl_ops hantro_ioctl_ops = {
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
+ .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
diff --git a/drivers/media/test-drivers/vim2m.c b/drivers/media/test-drivers/vim2m.c
index 3e3b424b4860..17213ce42059 100644
--- a/drivers/media/test-drivers/vim2m.c
+++ b/drivers/media/test-drivers/vim2m.c
@@ -960,6 +960,7 @@ static const struct v4l2_ioctl_ops vim2m_ioctl_ops = {
.vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf,
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
+ .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
@@ -1133,6 +1134,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
dst_vq->mem_ops = &vb2_vmalloc_memops;
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = &ctx->vb_mutex;
+ dst_vq->supports_delete_bufs = true;
return vb2_queue_init(dst_vq);
}
diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c
index 0cc30397fbad..d1d59943680f 100644
--- a/drivers/media/v4l2-core/v4l2-mem2mem.c
+++ b/drivers/media/v4l2-core/v4l2-mem2mem.c
@@ -831,6 +831,17 @@ int v4l2_m2m_prepare_buf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
}
EXPORT_SYMBOL_GPL(v4l2_m2m_prepare_buf);
+int v4l2_m2m_delete_bufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
+ struct v4l2_delete_buffers *d)
+{
+ struct vb2_queue *vq;
+
+ vq = v4l2_m2m_get_vq(m2m_ctx, d->type);
+
+ return vb2_delete_bufs(vq, d);
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_delete_bufs);
+
int v4l2_m2m_create_bufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
struct v4l2_create_buffers *create)
{
@@ -1377,6 +1388,15 @@ int v4l2_m2m_ioctl_create_bufs(struct file *file, void *priv,
}
EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_create_bufs);
+int v4l2_m2m_ioctl_delete_bufs(struct file *file, void *priv,
+ struct v4l2_delete_buffers *d)
+{
+ struct v4l2_fh *fh = file->private_data;
+
+ return v4l2_m2m_delete_bufs(file, fh->m2m_ctx, d);
+}
+EXPORT_SYMBOL_GPL(v4l2_m2m_ioctl_delete_bufs);
+
int v4l2_m2m_ioctl_querybuf(struct file *file, void *priv,
struct v4l2_buffer *buf)
{
diff --git a/include/media/v4l2-mem2mem.h b/include/media/v4l2-mem2mem.h
index d6c8eb2b5201..161f85c42dc8 100644
--- a/include/media/v4l2-mem2mem.h
+++ b/include/media/v4l2-mem2mem.h
@@ -381,6 +381,16 @@ int v4l2_m2m_dqbuf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
int v4l2_m2m_prepare_buf(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
struct v4l2_buffer *buf);
+/**
+ * v4l2_m2m_delete_bufs() - delete buffers from the queue
+ *
+ * @file: pointer to struct &file
+ * @m2m_ctx: m2m context assigned to the instance given by struct &v4l2_m2m_ctx
+ * @d: pointer to struct &v4l2_delete_buffers
+ */
+int v4l2_m2m_delete_bufs(struct file *file, struct v4l2_m2m_ctx *m2m_ctx,
+ struct v4l2_delete_buffers *d);
+
/**
* v4l2_m2m_create_bufs() - create a source or destination buffer, depending
* on the type
@@ -860,6 +870,8 @@ int v4l2_m2m_ioctl_reqbufs(struct file *file, void *priv,
struct v4l2_requestbuffers *rb);
int v4l2_m2m_ioctl_create_bufs(struct file *file, void *fh,
struct v4l2_create_buffers *create);
+int v4l2_m2m_ioctl_delete_bufs(struct file *file, void *priv,
+ struct v4l2_delete_buffers *d);
int v4l2_m2m_ioctl_querybuf(struct file *file, void *fh,
struct v4l2_buffer *buf);
int v4l2_m2m_ioctl_expbuf(struct file *file, void *fh,
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 56/56] media: test-drivers: Use helper for DELETE_BUFS ioctl
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-10-31 16:31 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:31 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Allow test drivers to use DELETE_BUFS by adding vb2_ioctl_delete_bufs() helper.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/test-drivers/vicodec/vicodec-core.c | 2 ++
drivers/media/test-drivers/vimc/vimc-capture.c | 2 ++
drivers/media/test-drivers/visl/visl-video.c | 2 ++
drivers/media/test-drivers/vivid/vivid-core.c | 13 ++++++++++---
4 files changed, 16 insertions(+), 3 deletions(-)
diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
index 69cbe2c094e1..f14a8fd506d0 100644
--- a/drivers/media/test-drivers/vicodec/vicodec-core.c
+++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
@@ -1339,6 +1339,7 @@ static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
+ .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
@@ -1725,6 +1726,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
dst_vq->mem_ops = &vb2_vmalloc_memops;
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = src_vq->lock;
+ dst_vq->supports_delete_bufs = true;
return vb2_queue_init(dst_vq);
}
diff --git a/drivers/media/test-drivers/vimc/vimc-capture.c b/drivers/media/test-drivers/vimc/vimc-capture.c
index aa944270e716..fda7ea3a6cb6 100644
--- a/drivers/media/test-drivers/vimc/vimc-capture.c
+++ b/drivers/media/test-drivers/vimc/vimc-capture.c
@@ -221,6 +221,7 @@ static const struct v4l2_ioctl_ops vimc_capture_ioctl_ops = {
.vidioc_expbuf = vb2_ioctl_expbuf,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
+ .vidioc_delete_bufs = vb2_ioctl_delete_bufs,
};
static void vimc_capture_return_all_buffers(struct vimc_capture_device *vcapture,
@@ -435,6 +436,7 @@ static struct vimc_ent_device *vimc_capture_add(struct vimc_device *vimc,
q->min_buffers_needed = 2;
q->lock = &vcapture->lock;
q->dev = v4l2_dev->dev;
+ q->supports_delete_bufs = true;
ret = vb2_queue_init(q);
if (ret) {
diff --git a/drivers/media/test-drivers/visl/visl-video.c b/drivers/media/test-drivers/visl/visl-video.c
index 7cac6a6456eb..bd6c112f7846 100644
--- a/drivers/media/test-drivers/visl/visl-video.c
+++ b/drivers/media/test-drivers/visl/visl-video.c
@@ -521,6 +521,7 @@ const struct v4l2_ioctl_ops visl_ioctl_ops = {
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
+ .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
@@ -728,6 +729,7 @@ int visl_queue_init(void *priv, struct vb2_queue *src_vq,
dst_vq->mem_ops = &vb2_vmalloc_memops;
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = &ctx->vb_mutex;
+ dst_vq->supports_delete_bufs = true;
return vb2_queue_init(dst_vq);
}
diff --git a/drivers/media/test-drivers/vivid/vivid-core.c b/drivers/media/test-drivers/vivid/vivid-core.c
index 353f035fcd19..06b18d8e2248 100644
--- a/drivers/media/test-drivers/vivid/vivid-core.c
+++ b/drivers/media/test-drivers/vivid/vivid-core.c
@@ -769,6 +769,7 @@ static const struct v4l2_ioctl_ops vivid_ioctl_ops = {
.vidioc_expbuf = vb2_ioctl_expbuf,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
+ .vidioc_delete_bufs = vb2_ioctl_delete_bufs,
.vidioc_enum_input = vivid_enum_input,
.vidioc_g_input = vivid_g_input,
@@ -883,12 +884,18 @@ static int vivid_create_queue(struct vivid_dev *dev,
* PAGE_SHIFT > 12, but then max_num_buffers will be clamped by
* videobuf2-core.c to MAX_BUFFER_INDEX.
*/
- if (buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ if (buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
q->max_num_buffers = 64;
- if (buf_type == V4L2_BUF_TYPE_SDR_CAPTURE)
+ q->supports_delete_bufs = true;
+ }
+ if (buf_type == V4L2_BUF_TYPE_SDR_CAPTURE) {
q->max_num_buffers = 1024;
- if (buf_type == V4L2_BUF_TYPE_VBI_CAPTURE)
+ q->supports_delete_bufs = true;
+ }
+ if (buf_type == V4L2_BUF_TYPE_VBI_CAPTURE) {
q->max_num_buffers = 32768;
+ q->supports_delete_bufs = true;
+ }
if (allocators[dev->inst] != 1)
q->io_modes |= VB2_USERPTR;
--
2.39.2
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 56/56] media: test-drivers: Use helper for DELETE_BUFS ioctl
@ 2023-10-31 16:31 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:31 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Allow test drivers to use DELETE_BUFS by adding vb2_ioctl_delete_bufs() helper.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/test-drivers/vicodec/vicodec-core.c | 2 ++
drivers/media/test-drivers/vimc/vimc-capture.c | 2 ++
drivers/media/test-drivers/visl/visl-video.c | 2 ++
drivers/media/test-drivers/vivid/vivid-core.c | 13 ++++++++++---
4 files changed, 16 insertions(+), 3 deletions(-)
diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
index 69cbe2c094e1..f14a8fd506d0 100644
--- a/drivers/media/test-drivers/vicodec/vicodec-core.c
+++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
@@ -1339,6 +1339,7 @@ static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
+ .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
@@ -1725,6 +1726,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
dst_vq->mem_ops = &vb2_vmalloc_memops;
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = src_vq->lock;
+ dst_vq->supports_delete_bufs = true;
return vb2_queue_init(dst_vq);
}
diff --git a/drivers/media/test-drivers/vimc/vimc-capture.c b/drivers/media/test-drivers/vimc/vimc-capture.c
index aa944270e716..fda7ea3a6cb6 100644
--- a/drivers/media/test-drivers/vimc/vimc-capture.c
+++ b/drivers/media/test-drivers/vimc/vimc-capture.c
@@ -221,6 +221,7 @@ static const struct v4l2_ioctl_ops vimc_capture_ioctl_ops = {
.vidioc_expbuf = vb2_ioctl_expbuf,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
+ .vidioc_delete_bufs = vb2_ioctl_delete_bufs,
};
static void vimc_capture_return_all_buffers(struct vimc_capture_device *vcapture,
@@ -435,6 +436,7 @@ static struct vimc_ent_device *vimc_capture_add(struct vimc_device *vimc,
q->min_buffers_needed = 2;
q->lock = &vcapture->lock;
q->dev = v4l2_dev->dev;
+ q->supports_delete_bufs = true;
ret = vb2_queue_init(q);
if (ret) {
diff --git a/drivers/media/test-drivers/visl/visl-video.c b/drivers/media/test-drivers/visl/visl-video.c
index 7cac6a6456eb..bd6c112f7846 100644
--- a/drivers/media/test-drivers/visl/visl-video.c
+++ b/drivers/media/test-drivers/visl/visl-video.c
@@ -521,6 +521,7 @@ const struct v4l2_ioctl_ops visl_ioctl_ops = {
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
+ .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
@@ -728,6 +729,7 @@ int visl_queue_init(void *priv, struct vb2_queue *src_vq,
dst_vq->mem_ops = &vb2_vmalloc_memops;
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = &ctx->vb_mutex;
+ dst_vq->supports_delete_bufs = true;
return vb2_queue_init(dst_vq);
}
diff --git a/drivers/media/test-drivers/vivid/vivid-core.c b/drivers/media/test-drivers/vivid/vivid-core.c
index 353f035fcd19..06b18d8e2248 100644
--- a/drivers/media/test-drivers/vivid/vivid-core.c
+++ b/drivers/media/test-drivers/vivid/vivid-core.c
@@ -769,6 +769,7 @@ static const struct v4l2_ioctl_ops vivid_ioctl_ops = {
.vidioc_expbuf = vb2_ioctl_expbuf,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
+ .vidioc_delete_bufs = vb2_ioctl_delete_bufs,
.vidioc_enum_input = vivid_enum_input,
.vidioc_g_input = vivid_g_input,
@@ -883,12 +884,18 @@ static int vivid_create_queue(struct vivid_dev *dev,
* PAGE_SHIFT > 12, but then max_num_buffers will be clamped by
* videobuf2-core.c to MAX_BUFFER_INDEX.
*/
- if (buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ if (buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
q->max_num_buffers = 64;
- if (buf_type == V4L2_BUF_TYPE_SDR_CAPTURE)
+ q->supports_delete_bufs = true;
+ }
+ if (buf_type == V4L2_BUF_TYPE_SDR_CAPTURE) {
q->max_num_buffers = 1024;
- if (buf_type == V4L2_BUF_TYPE_VBI_CAPTURE)
+ q->supports_delete_bufs = true;
+ }
+ if (buf_type == V4L2_BUF_TYPE_VBI_CAPTURE) {
q->max_num_buffers = 32768;
+ q->supports_delete_bufs = true;
+ }
if (allocators[dev->inst] != 1)
q->io_modes |= VB2_USERPTR;
--
2.39.2
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply related [flat|nested] 399+ messages in thread
* [PATCH v14 56/56] media: test-drivers: Use helper for DELETE_BUFS ioctl
@ 2023-10-31 16:31 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-10-31 16:31 UTC (permalink / raw)
To: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Benjamin Gaignard
Allow test drivers to use DELETE_BUFS by adding vb2_ioctl_delete_bufs() helper.
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
---
drivers/media/test-drivers/vicodec/vicodec-core.c | 2 ++
drivers/media/test-drivers/vimc/vimc-capture.c | 2 ++
drivers/media/test-drivers/visl/visl-video.c | 2 ++
drivers/media/test-drivers/vivid/vivid-core.c | 13 ++++++++++---
4 files changed, 16 insertions(+), 3 deletions(-)
diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
index 69cbe2c094e1..f14a8fd506d0 100644
--- a/drivers/media/test-drivers/vicodec/vicodec-core.c
+++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
@@ -1339,6 +1339,7 @@ static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
+ .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
@@ -1725,6 +1726,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
dst_vq->mem_ops = &vb2_vmalloc_memops;
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = src_vq->lock;
+ dst_vq->supports_delete_bufs = true;
return vb2_queue_init(dst_vq);
}
diff --git a/drivers/media/test-drivers/vimc/vimc-capture.c b/drivers/media/test-drivers/vimc/vimc-capture.c
index aa944270e716..fda7ea3a6cb6 100644
--- a/drivers/media/test-drivers/vimc/vimc-capture.c
+++ b/drivers/media/test-drivers/vimc/vimc-capture.c
@@ -221,6 +221,7 @@ static const struct v4l2_ioctl_ops vimc_capture_ioctl_ops = {
.vidioc_expbuf = vb2_ioctl_expbuf,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
+ .vidioc_delete_bufs = vb2_ioctl_delete_bufs,
};
static void vimc_capture_return_all_buffers(struct vimc_capture_device *vcapture,
@@ -435,6 +436,7 @@ static struct vimc_ent_device *vimc_capture_add(struct vimc_device *vimc,
q->min_buffers_needed = 2;
q->lock = &vcapture->lock;
q->dev = v4l2_dev->dev;
+ q->supports_delete_bufs = true;
ret = vb2_queue_init(q);
if (ret) {
diff --git a/drivers/media/test-drivers/visl/visl-video.c b/drivers/media/test-drivers/visl/visl-video.c
index 7cac6a6456eb..bd6c112f7846 100644
--- a/drivers/media/test-drivers/visl/visl-video.c
+++ b/drivers/media/test-drivers/visl/visl-video.c
@@ -521,6 +521,7 @@ const struct v4l2_ioctl_ops visl_ioctl_ops = {
.vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
.vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
.vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
+ .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
.vidioc_streamon = v4l2_m2m_ioctl_streamon,
.vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
@@ -728,6 +729,7 @@ int visl_queue_init(void *priv, struct vb2_queue *src_vq,
dst_vq->mem_ops = &vb2_vmalloc_memops;
dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
dst_vq->lock = &ctx->vb_mutex;
+ dst_vq->supports_delete_bufs = true;
return vb2_queue_init(dst_vq);
}
diff --git a/drivers/media/test-drivers/vivid/vivid-core.c b/drivers/media/test-drivers/vivid/vivid-core.c
index 353f035fcd19..06b18d8e2248 100644
--- a/drivers/media/test-drivers/vivid/vivid-core.c
+++ b/drivers/media/test-drivers/vivid/vivid-core.c
@@ -769,6 +769,7 @@ static const struct v4l2_ioctl_ops vivid_ioctl_ops = {
.vidioc_expbuf = vb2_ioctl_expbuf,
.vidioc_streamon = vb2_ioctl_streamon,
.vidioc_streamoff = vb2_ioctl_streamoff,
+ .vidioc_delete_bufs = vb2_ioctl_delete_bufs,
.vidioc_enum_input = vivid_enum_input,
.vidioc_g_input = vivid_g_input,
@@ -883,12 +884,18 @@ static int vivid_create_queue(struct vivid_dev *dev,
* PAGE_SHIFT > 12, but then max_num_buffers will be clamped by
* videobuf2-core.c to MAX_BUFFER_INDEX.
*/
- if (buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ if (buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE) {
q->max_num_buffers = 64;
- if (buf_type == V4L2_BUF_TYPE_SDR_CAPTURE)
+ q->supports_delete_bufs = true;
+ }
+ if (buf_type == V4L2_BUF_TYPE_SDR_CAPTURE) {
q->max_num_buffers = 1024;
- if (buf_type == V4L2_BUF_TYPE_VBI_CAPTURE)
+ q->supports_delete_bufs = true;
+ }
+ if (buf_type == V4L2_BUF_TYPE_VBI_CAPTURE) {
q->max_num_buffers = 32768;
+ q->supports_delete_bufs = true;
+ }
if (allocators[dev->inst] != 1)
q->io_modes |= VB2_USERPTR;
--
2.39.2
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply related [flat|nested] 399+ messages in thread
* Re: [PATCH v14 43/56] media: videobuf2: Be more flexible on the number of queue stored buffers
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-02 8:17 ` Hans Verkuil
-1 siblings, 0 replies; 399+ messages in thread
From: Hans Verkuil @ 2023-11-02 8:17 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Hi Benjamin,
After a lot of testing yesterday I discovered that this patch introduces a
bug. After this bug, running the test-media script will result in a lot of
unbalanced counters messages:
[Wed Nov 1 16:40:48 2023] videobuf2_common: unbalanced counters for queue ffff888115a07f00, buffer 11:
[Wed Nov 1 16:40:48 2023] videobuf2_common: buf_init: 1 buf_cleanup: 0
[Wed Nov 1 16:40:48 2023] videobuf2_common: alloc: 1 put: 0
[Wed Nov 1 16:40:48 2023] videobuf2_common: get_dmabuf: 0 num_users: 0
Apparently buf_init is called, but not buf_cleanup.
I also get loads of kmemleak reports:
unreferenced object 0xffff88800eae6800 (size 2048):
comm "v4l2-compliance", pid 652, jiffies 4294937190 (age 149.650s)
hex dump (first 32 bytes):
e0 52 18 0c 81 88 ff ff 00 00 00 00 02 00 00 00 .R..............
01 00 00 00 01 00 00 00 20 2f d3 f3 3e 00 00 00 ........ /..>...
backtrace:
[<ffffffffacbdb08b>] __kmalloc+0x4b/0x150
[<ffffffffc01df77a>] __vb2_queue_alloc+0x11a/0xca0 [videobuf2_common]
[<ffffffffc01e74f5>] vb2_core_reqbufs+0x735/0xfd0 [videobuf2_common]
[<ffffffffc046ca71>] v4l2_m2m_ioctl_reqbufs+0xc1/0x1b0 [v4l2_mem2mem]
[<ffffffffc0231520>] __video_do_ioctl+0x8d0/0xc20 [videodev]
[<ffffffffc0232bcc>] video_usercopy+0x48c/0xd00 [videodev]
[<ffffffffc021e2ff>] v4l2_ioctl+0x17f/0x1f0 [videodev]
[<ffffffffacd758ce>] __do_compat_sys_ioctl+0x13e/0x1d0
[<ffffffffae7df992>] __do_fast_syscall_32+0x62/0xe0
[<ffffffffae7dfb4f>] do_fast_syscall_32+0x2f/0x70
[<ffffffffaea012ed>] entry_SYSCALL_compat_after_hwframe+0x45/0x4d
Very likely the same issue.
Unfortunately, the build script does not yet check for issues like this,
you have to manually inspect the test-media logs (found in the logs directory
after the run). It's on my TODO list.
Regards,
Hans
On 31/10/2023 17:30, Benjamin Gaignard wrote:
> Add 'max_num_buffers' field in vb2_queue struct to let drivers decide
> how many buffers could be stored in a queue.
> This require 'bufs' array to be allocated at queue init time and freed
> when releasing the queue.
> By default VB2_MAX_FRAME remains the limit.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 41 +++++++++++++++----
> .../media/common/videobuf2/videobuf2-v4l2.c | 6 +--
> include/media/videobuf2-core.h | 10 ++++-
> 3 files changed, 44 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index c5c5ae4d213d..72ef7179d80a 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -416,7 +416,7 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
> */
> static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
> {
> - WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
> + WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
>
> q->bufs[index] = vb;
> vb->index = index;
> @@ -449,9 +449,9 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> struct vb2_buffer *vb;
> int ret;
>
> - /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
> + /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
> num_buffers = min_t(unsigned int, num_buffers,
> - VB2_MAX_FRAME - q_num_buffers);
> + q->max_num_buffers - q_num_buffers);
>
> for (buffer = 0; buffer < num_buffers; ++buffer) {
> /* Allocate vb2 buffer structures */
> @@ -813,7 +813,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
> unsigned plane_sizes[VB2_MAX_PLANES] = { };
> bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
> unsigned int i;
> - int ret;
> + int ret = 0;
>
> if (q->streaming) {
> dprintk(q, 1, "streaming active\n");
> @@ -857,17 +857,22 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
> /*
> * Make sure the requested values and current defaults are sane.
> */
> - WARN_ON(q->min_buffers_needed > VB2_MAX_FRAME);
> num_buffers = max_t(unsigned int, *count, q->min_buffers_needed);
> - num_buffers = min_t(unsigned int, num_buffers, VB2_MAX_FRAME);
> + num_buffers = min_t(unsigned int, num_buffers, q->max_num_buffers);
> memset(q->alloc_devs, 0, sizeof(q->alloc_devs));
> /*
> * Set this now to ensure that drivers see the correct q->memory value
> * in the queue_setup op.
> */
> mutex_lock(&q->mmap_lock);
> + if (!q->bufs)
> + q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
> + if (!q->bufs)
> + ret = -ENOMEM;
> q->memory = memory;
> mutex_unlock(&q->mmap_lock);
> + if (ret)
> + return ret;
> set_queue_coherency(q, non_coherent_mem);
>
> /*
> @@ -976,7 +981,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> bool no_previous_buffers = !q_num_bufs;
> int ret = 0;
>
> - if (q_num_bufs == VB2_MAX_FRAME) {
> + if (q->num_buffers == q->max_num_buffers) {
> dprintk(q, 1, "maximum number of buffers already allocated\n");
> return -ENOBUFS;
> }
> @@ -993,7 +998,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> */
> mutex_lock(&q->mmap_lock);
> q->memory = memory;
> + if (!q->bufs)
> + q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
> + if (!q->bufs)
> + ret = -ENOMEM;
> mutex_unlock(&q->mmap_lock);
> + if (ret)
> + return ret;
> q->waiting_for_buffers = !q->is_output;
> set_queue_coherency(q, non_coherent_mem);
> } else {
> @@ -1005,7 +1016,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> return -EINVAL;
> }
>
> - num_buffers = min(*count, VB2_MAX_FRAME - q_num_bufs);
> + num_buffers = min(*count, q->max_num_buffers - q_num_bufs);
>
> if (requested_planes && requested_sizes) {
> num_planes = requested_planes;
> @@ -2465,6 +2476,12 @@ int vb2_core_queue_init(struct vb2_queue *q)
> /*
> * Sanity check
> */
> + if (!q->max_num_buffers)
> + q->max_num_buffers = VB2_MAX_FRAME;
> +
> + /* The maximum is limited by offset cookie encoding pattern */
> + q->max_num_buffers = min_t(unsigned int, q->max_num_buffers, MAX_BUFFER_INDEX);
> +
> if (WARN_ON(!q) ||
> WARN_ON(!q->ops) ||
> WARN_ON(!q->mem_ops) ||
> @@ -2474,6 +2491,10 @@ int vb2_core_queue_init(struct vb2_queue *q)
> WARN_ON(!q->ops->buf_queue))
> return -EINVAL;
>
> + if (WARN_ON(q->max_num_buffers > MAX_BUFFER_INDEX) ||
> + WARN_ON(q->min_buffers_needed > q->max_num_buffers))
> + return -EINVAL;
> +
> if (WARN_ON(q->requires_requests && !q->supports_requests))
> return -EINVAL;
>
> @@ -2519,7 +2540,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
> __vb2_cleanup_fileio(q);
> __vb2_queue_cancel(q);
> mutex_lock(&q->mmap_lock);
> - __vb2_queue_free(q, vb2_get_num_buffers(q));
> + __vb2_queue_free(q, q->max_num_buffers);
> + kfree(q->bufs);
> + q->bufs = NULL;
> q->num_buffers = 0;
> mutex_unlock(&q->mmap_lock);
> }
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index 7d798fb15c0b..f3cf4b235c1f 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -627,7 +627,7 @@ struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp)
> * This loop doesn't scale if there is a really large number of buffers.
> * Maybe something more efficient will be needed in this case.
> */
> - for (i = 0; i < vb2_get_num_buffers(q); i++) {
> + for (i = 0; i < q->max_num_buffers; i++) {
> vb2 = vb2_get_buffer(q, i);
>
> if (!vb2)
> @@ -1142,7 +1142,7 @@ int _vb2_fop_release(struct file *file, struct mutex *lock)
>
> if (lock)
> mutex_lock(lock);
> - if (file->private_data == vdev->queue->owner) {
> + if (!vdev->queue->owner || file->private_data == vdev->queue->owner) {
> vb2_queue_release(vdev->queue);
> vdev->queue->owner = NULL;
> }
> @@ -1270,7 +1270,7 @@ void vb2_video_unregister_device(struct video_device *vdev)
> */
> get_device(&vdev->dev);
> video_unregister_device(vdev);
> - if (vdev->queue && vdev->queue->owner) {
> + if (vdev->queue) {
> struct mutex *lock = vdev->queue->lock ?
> vdev->queue->lock : vdev->lock;
>
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index 8f9d9e4af5b1..e77a397195f2 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -558,6 +558,7 @@ struct vb2_buf_ops {
> * @dma_dir: DMA mapping direction.
> * @bufs: videobuf2 buffer structures
> * @num_buffers: number of allocated/used buffers
> + * @max_num_buffers: upper limit of number of allocated/used buffers
> * @queued_list: list of buffers currently queued from userspace
> * @queued_count: number of buffers queued and ready for streaming.
> * @owned_by_drv_count: number of buffers owned by the driver
> @@ -619,8 +620,9 @@ struct vb2_queue {
> struct mutex mmap_lock;
> unsigned int memory;
> enum dma_data_direction dma_dir;
> - struct vb2_buffer *bufs[VB2_MAX_FRAME];
> + struct vb2_buffer **bufs;
> unsigned int num_buffers;
> + unsigned int max_num_buffers;
>
> struct list_head queued_list;
> unsigned int queued_count;
> @@ -1248,6 +1250,12 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
> static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
> unsigned int index)
> {
> + if (!q->bufs)
> + return NULL;
> +
> + if (index >= q->max_num_buffers)
> + return NULL;
> +
> if (index < q->num_buffers)
> return q->bufs[index];
> return NULL;
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 43/56] media: videobuf2: Be more flexible on the number of queue stored buffers
@ 2023-11-02 8:17 ` Hans Verkuil
0 siblings, 0 replies; 399+ messages in thread
From: Hans Verkuil @ 2023-11-02 8:17 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Hi Benjamin,
After a lot of testing yesterday I discovered that this patch introduces a
bug. After this bug, running the test-media script will result in a lot of
unbalanced counters messages:
[Wed Nov 1 16:40:48 2023] videobuf2_common: unbalanced counters for queue ffff888115a07f00, buffer 11:
[Wed Nov 1 16:40:48 2023] videobuf2_common: buf_init: 1 buf_cleanup: 0
[Wed Nov 1 16:40:48 2023] videobuf2_common: alloc: 1 put: 0
[Wed Nov 1 16:40:48 2023] videobuf2_common: get_dmabuf: 0 num_users: 0
Apparently buf_init is called, but not buf_cleanup.
I also get loads of kmemleak reports:
unreferenced object 0xffff88800eae6800 (size 2048):
comm "v4l2-compliance", pid 652, jiffies 4294937190 (age 149.650s)
hex dump (first 32 bytes):
e0 52 18 0c 81 88 ff ff 00 00 00 00 02 00 00 00 .R..............
01 00 00 00 01 00 00 00 20 2f d3 f3 3e 00 00 00 ........ /..>...
backtrace:
[<ffffffffacbdb08b>] __kmalloc+0x4b/0x150
[<ffffffffc01df77a>] __vb2_queue_alloc+0x11a/0xca0 [videobuf2_common]
[<ffffffffc01e74f5>] vb2_core_reqbufs+0x735/0xfd0 [videobuf2_common]
[<ffffffffc046ca71>] v4l2_m2m_ioctl_reqbufs+0xc1/0x1b0 [v4l2_mem2mem]
[<ffffffffc0231520>] __video_do_ioctl+0x8d0/0xc20 [videodev]
[<ffffffffc0232bcc>] video_usercopy+0x48c/0xd00 [videodev]
[<ffffffffc021e2ff>] v4l2_ioctl+0x17f/0x1f0 [videodev]
[<ffffffffacd758ce>] __do_compat_sys_ioctl+0x13e/0x1d0
[<ffffffffae7df992>] __do_fast_syscall_32+0x62/0xe0
[<ffffffffae7dfb4f>] do_fast_syscall_32+0x2f/0x70
[<ffffffffaea012ed>] entry_SYSCALL_compat_after_hwframe+0x45/0x4d
Very likely the same issue.
Unfortunately, the build script does not yet check for issues like this,
you have to manually inspect the test-media logs (found in the logs directory
after the run). It's on my TODO list.
Regards,
Hans
On 31/10/2023 17:30, Benjamin Gaignard wrote:
> Add 'max_num_buffers' field in vb2_queue struct to let drivers decide
> how many buffers could be stored in a queue.
> This require 'bufs' array to be allocated at queue init time and freed
> when releasing the queue.
> By default VB2_MAX_FRAME remains the limit.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 41 +++++++++++++++----
> .../media/common/videobuf2/videobuf2-v4l2.c | 6 +--
> include/media/videobuf2-core.h | 10 ++++-
> 3 files changed, 44 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index c5c5ae4d213d..72ef7179d80a 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -416,7 +416,7 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
> */
> static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
> {
> - WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
> + WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
>
> q->bufs[index] = vb;
> vb->index = index;
> @@ -449,9 +449,9 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> struct vb2_buffer *vb;
> int ret;
>
> - /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
> + /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
> num_buffers = min_t(unsigned int, num_buffers,
> - VB2_MAX_FRAME - q_num_buffers);
> + q->max_num_buffers - q_num_buffers);
>
> for (buffer = 0; buffer < num_buffers; ++buffer) {
> /* Allocate vb2 buffer structures */
> @@ -813,7 +813,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
> unsigned plane_sizes[VB2_MAX_PLANES] = { };
> bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
> unsigned int i;
> - int ret;
> + int ret = 0;
>
> if (q->streaming) {
> dprintk(q, 1, "streaming active\n");
> @@ -857,17 +857,22 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
> /*
> * Make sure the requested values and current defaults are sane.
> */
> - WARN_ON(q->min_buffers_needed > VB2_MAX_FRAME);
> num_buffers = max_t(unsigned int, *count, q->min_buffers_needed);
> - num_buffers = min_t(unsigned int, num_buffers, VB2_MAX_FRAME);
> + num_buffers = min_t(unsigned int, num_buffers, q->max_num_buffers);
> memset(q->alloc_devs, 0, sizeof(q->alloc_devs));
> /*
> * Set this now to ensure that drivers see the correct q->memory value
> * in the queue_setup op.
> */
> mutex_lock(&q->mmap_lock);
> + if (!q->bufs)
> + q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
> + if (!q->bufs)
> + ret = -ENOMEM;
> q->memory = memory;
> mutex_unlock(&q->mmap_lock);
> + if (ret)
> + return ret;
> set_queue_coherency(q, non_coherent_mem);
>
> /*
> @@ -976,7 +981,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> bool no_previous_buffers = !q_num_bufs;
> int ret = 0;
>
> - if (q_num_bufs == VB2_MAX_FRAME) {
> + if (q->num_buffers == q->max_num_buffers) {
> dprintk(q, 1, "maximum number of buffers already allocated\n");
> return -ENOBUFS;
> }
> @@ -993,7 +998,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> */
> mutex_lock(&q->mmap_lock);
> q->memory = memory;
> + if (!q->bufs)
> + q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
> + if (!q->bufs)
> + ret = -ENOMEM;
> mutex_unlock(&q->mmap_lock);
> + if (ret)
> + return ret;
> q->waiting_for_buffers = !q->is_output;
> set_queue_coherency(q, non_coherent_mem);
> } else {
> @@ -1005,7 +1016,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> return -EINVAL;
> }
>
> - num_buffers = min(*count, VB2_MAX_FRAME - q_num_bufs);
> + num_buffers = min(*count, q->max_num_buffers - q_num_bufs);
>
> if (requested_planes && requested_sizes) {
> num_planes = requested_planes;
> @@ -2465,6 +2476,12 @@ int vb2_core_queue_init(struct vb2_queue *q)
> /*
> * Sanity check
> */
> + if (!q->max_num_buffers)
> + q->max_num_buffers = VB2_MAX_FRAME;
> +
> + /* The maximum is limited by offset cookie encoding pattern */
> + q->max_num_buffers = min_t(unsigned int, q->max_num_buffers, MAX_BUFFER_INDEX);
> +
> if (WARN_ON(!q) ||
> WARN_ON(!q->ops) ||
> WARN_ON(!q->mem_ops) ||
> @@ -2474,6 +2491,10 @@ int vb2_core_queue_init(struct vb2_queue *q)
> WARN_ON(!q->ops->buf_queue))
> return -EINVAL;
>
> + if (WARN_ON(q->max_num_buffers > MAX_BUFFER_INDEX) ||
> + WARN_ON(q->min_buffers_needed > q->max_num_buffers))
> + return -EINVAL;
> +
> if (WARN_ON(q->requires_requests && !q->supports_requests))
> return -EINVAL;
>
> @@ -2519,7 +2540,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
> __vb2_cleanup_fileio(q);
> __vb2_queue_cancel(q);
> mutex_lock(&q->mmap_lock);
> - __vb2_queue_free(q, vb2_get_num_buffers(q));
> + __vb2_queue_free(q, q->max_num_buffers);
> + kfree(q->bufs);
> + q->bufs = NULL;
> q->num_buffers = 0;
> mutex_unlock(&q->mmap_lock);
> }
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index 7d798fb15c0b..f3cf4b235c1f 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -627,7 +627,7 @@ struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp)
> * This loop doesn't scale if there is a really large number of buffers.
> * Maybe something more efficient will be needed in this case.
> */
> - for (i = 0; i < vb2_get_num_buffers(q); i++) {
> + for (i = 0; i < q->max_num_buffers; i++) {
> vb2 = vb2_get_buffer(q, i);
>
> if (!vb2)
> @@ -1142,7 +1142,7 @@ int _vb2_fop_release(struct file *file, struct mutex *lock)
>
> if (lock)
> mutex_lock(lock);
> - if (file->private_data == vdev->queue->owner) {
> + if (!vdev->queue->owner || file->private_data == vdev->queue->owner) {
> vb2_queue_release(vdev->queue);
> vdev->queue->owner = NULL;
> }
> @@ -1270,7 +1270,7 @@ void vb2_video_unregister_device(struct video_device *vdev)
> */
> get_device(&vdev->dev);
> video_unregister_device(vdev);
> - if (vdev->queue && vdev->queue->owner) {
> + if (vdev->queue) {
> struct mutex *lock = vdev->queue->lock ?
> vdev->queue->lock : vdev->lock;
>
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index 8f9d9e4af5b1..e77a397195f2 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -558,6 +558,7 @@ struct vb2_buf_ops {
> * @dma_dir: DMA mapping direction.
> * @bufs: videobuf2 buffer structures
> * @num_buffers: number of allocated/used buffers
> + * @max_num_buffers: upper limit of number of allocated/used buffers
> * @queued_list: list of buffers currently queued from userspace
> * @queued_count: number of buffers queued and ready for streaming.
> * @owned_by_drv_count: number of buffers owned by the driver
> @@ -619,8 +620,9 @@ struct vb2_queue {
> struct mutex mmap_lock;
> unsigned int memory;
> enum dma_data_direction dma_dir;
> - struct vb2_buffer *bufs[VB2_MAX_FRAME];
> + struct vb2_buffer **bufs;
> unsigned int num_buffers;
> + unsigned int max_num_buffers;
>
> struct list_head queued_list;
> unsigned int queued_count;
> @@ -1248,6 +1250,12 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
> static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
> unsigned int index)
> {
> + if (!q->bufs)
> + return NULL;
> +
> + if (index >= q->max_num_buffers)
> + return NULL;
> +
> if (index < q->num_buffers)
> return q->bufs[index];
> return NULL;
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 43/56] media: videobuf2: Be more flexible on the number of queue stored buffers
@ 2023-11-02 8:17 ` Hans Verkuil
0 siblings, 0 replies; 399+ messages in thread
From: Hans Verkuil @ 2023-11-02 8:17 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Hi Benjamin,
After a lot of testing yesterday I discovered that this patch introduces a
bug. After this bug, running the test-media script will result in a lot of
unbalanced counters messages:
[Wed Nov 1 16:40:48 2023] videobuf2_common: unbalanced counters for queue ffff888115a07f00, buffer 11:
[Wed Nov 1 16:40:48 2023] videobuf2_common: buf_init: 1 buf_cleanup: 0
[Wed Nov 1 16:40:48 2023] videobuf2_common: alloc: 1 put: 0
[Wed Nov 1 16:40:48 2023] videobuf2_common: get_dmabuf: 0 num_users: 0
Apparently buf_init is called, but not buf_cleanup.
I also get loads of kmemleak reports:
unreferenced object 0xffff88800eae6800 (size 2048):
comm "v4l2-compliance", pid 652, jiffies 4294937190 (age 149.650s)
hex dump (first 32 bytes):
e0 52 18 0c 81 88 ff ff 00 00 00 00 02 00 00 00 .R..............
01 00 00 00 01 00 00 00 20 2f d3 f3 3e 00 00 00 ........ /..>...
backtrace:
[<ffffffffacbdb08b>] __kmalloc+0x4b/0x150
[<ffffffffc01df77a>] __vb2_queue_alloc+0x11a/0xca0 [videobuf2_common]
[<ffffffffc01e74f5>] vb2_core_reqbufs+0x735/0xfd0 [videobuf2_common]
[<ffffffffc046ca71>] v4l2_m2m_ioctl_reqbufs+0xc1/0x1b0 [v4l2_mem2mem]
[<ffffffffc0231520>] __video_do_ioctl+0x8d0/0xc20 [videodev]
[<ffffffffc0232bcc>] video_usercopy+0x48c/0xd00 [videodev]
[<ffffffffc021e2ff>] v4l2_ioctl+0x17f/0x1f0 [videodev]
[<ffffffffacd758ce>] __do_compat_sys_ioctl+0x13e/0x1d0
[<ffffffffae7df992>] __do_fast_syscall_32+0x62/0xe0
[<ffffffffae7dfb4f>] do_fast_syscall_32+0x2f/0x70
[<ffffffffaea012ed>] entry_SYSCALL_compat_after_hwframe+0x45/0x4d
Very likely the same issue.
Unfortunately, the build script does not yet check for issues like this,
you have to manually inspect the test-media logs (found in the logs directory
after the run). It's on my TODO list.
Regards,
Hans
On 31/10/2023 17:30, Benjamin Gaignard wrote:
> Add 'max_num_buffers' field in vb2_queue struct to let drivers decide
> how many buffers could be stored in a queue.
> This require 'bufs' array to be allocated at queue init time and freed
> when releasing the queue.
> By default VB2_MAX_FRAME remains the limit.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 41 +++++++++++++++----
> .../media/common/videobuf2/videobuf2-v4l2.c | 6 +--
> include/media/videobuf2-core.h | 10 ++++-
> 3 files changed, 44 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index c5c5ae4d213d..72ef7179d80a 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -416,7 +416,7 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
> */
> static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
> {
> - WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
> + WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
>
> q->bufs[index] = vb;
> vb->index = index;
> @@ -449,9 +449,9 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> struct vb2_buffer *vb;
> int ret;
>
> - /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
> + /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
> num_buffers = min_t(unsigned int, num_buffers,
> - VB2_MAX_FRAME - q_num_buffers);
> + q->max_num_buffers - q_num_buffers);
>
> for (buffer = 0; buffer < num_buffers; ++buffer) {
> /* Allocate vb2 buffer structures */
> @@ -813,7 +813,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
> unsigned plane_sizes[VB2_MAX_PLANES] = { };
> bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
> unsigned int i;
> - int ret;
> + int ret = 0;
>
> if (q->streaming) {
> dprintk(q, 1, "streaming active\n");
> @@ -857,17 +857,22 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
> /*
> * Make sure the requested values and current defaults are sane.
> */
> - WARN_ON(q->min_buffers_needed > VB2_MAX_FRAME);
> num_buffers = max_t(unsigned int, *count, q->min_buffers_needed);
> - num_buffers = min_t(unsigned int, num_buffers, VB2_MAX_FRAME);
> + num_buffers = min_t(unsigned int, num_buffers, q->max_num_buffers);
> memset(q->alloc_devs, 0, sizeof(q->alloc_devs));
> /*
> * Set this now to ensure that drivers see the correct q->memory value
> * in the queue_setup op.
> */
> mutex_lock(&q->mmap_lock);
> + if (!q->bufs)
> + q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
> + if (!q->bufs)
> + ret = -ENOMEM;
> q->memory = memory;
> mutex_unlock(&q->mmap_lock);
> + if (ret)
> + return ret;
> set_queue_coherency(q, non_coherent_mem);
>
> /*
> @@ -976,7 +981,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> bool no_previous_buffers = !q_num_bufs;
> int ret = 0;
>
> - if (q_num_bufs == VB2_MAX_FRAME) {
> + if (q->num_buffers == q->max_num_buffers) {
> dprintk(q, 1, "maximum number of buffers already allocated\n");
> return -ENOBUFS;
> }
> @@ -993,7 +998,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> */
> mutex_lock(&q->mmap_lock);
> q->memory = memory;
> + if (!q->bufs)
> + q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
> + if (!q->bufs)
> + ret = -ENOMEM;
> mutex_unlock(&q->mmap_lock);
> + if (ret)
> + return ret;
> q->waiting_for_buffers = !q->is_output;
> set_queue_coherency(q, non_coherent_mem);
> } else {
> @@ -1005,7 +1016,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> return -EINVAL;
> }
>
> - num_buffers = min(*count, VB2_MAX_FRAME - q_num_bufs);
> + num_buffers = min(*count, q->max_num_buffers - q_num_bufs);
>
> if (requested_planes && requested_sizes) {
> num_planes = requested_planes;
> @@ -2465,6 +2476,12 @@ int vb2_core_queue_init(struct vb2_queue *q)
> /*
> * Sanity check
> */
> + if (!q->max_num_buffers)
> + q->max_num_buffers = VB2_MAX_FRAME;
> +
> + /* The maximum is limited by offset cookie encoding pattern */
> + q->max_num_buffers = min_t(unsigned int, q->max_num_buffers, MAX_BUFFER_INDEX);
> +
> if (WARN_ON(!q) ||
> WARN_ON(!q->ops) ||
> WARN_ON(!q->mem_ops) ||
> @@ -2474,6 +2491,10 @@ int vb2_core_queue_init(struct vb2_queue *q)
> WARN_ON(!q->ops->buf_queue))
> return -EINVAL;
>
> + if (WARN_ON(q->max_num_buffers > MAX_BUFFER_INDEX) ||
> + WARN_ON(q->min_buffers_needed > q->max_num_buffers))
> + return -EINVAL;
> +
> if (WARN_ON(q->requires_requests && !q->supports_requests))
> return -EINVAL;
>
> @@ -2519,7 +2540,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
> __vb2_cleanup_fileio(q);
> __vb2_queue_cancel(q);
> mutex_lock(&q->mmap_lock);
> - __vb2_queue_free(q, vb2_get_num_buffers(q));
> + __vb2_queue_free(q, q->max_num_buffers);
> + kfree(q->bufs);
> + q->bufs = NULL;
> q->num_buffers = 0;
> mutex_unlock(&q->mmap_lock);
> }
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index 7d798fb15c0b..f3cf4b235c1f 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -627,7 +627,7 @@ struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp)
> * This loop doesn't scale if there is a really large number of buffers.
> * Maybe something more efficient will be needed in this case.
> */
> - for (i = 0; i < vb2_get_num_buffers(q); i++) {
> + for (i = 0; i < q->max_num_buffers; i++) {
> vb2 = vb2_get_buffer(q, i);
>
> if (!vb2)
> @@ -1142,7 +1142,7 @@ int _vb2_fop_release(struct file *file, struct mutex *lock)
>
> if (lock)
> mutex_lock(lock);
> - if (file->private_data == vdev->queue->owner) {
> + if (!vdev->queue->owner || file->private_data == vdev->queue->owner) {
> vb2_queue_release(vdev->queue);
> vdev->queue->owner = NULL;
> }
> @@ -1270,7 +1270,7 @@ void vb2_video_unregister_device(struct video_device *vdev)
> */
> get_device(&vdev->dev);
> video_unregister_device(vdev);
> - if (vdev->queue && vdev->queue->owner) {
> + if (vdev->queue) {
> struct mutex *lock = vdev->queue->lock ?
> vdev->queue->lock : vdev->lock;
>
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index 8f9d9e4af5b1..e77a397195f2 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -558,6 +558,7 @@ struct vb2_buf_ops {
> * @dma_dir: DMA mapping direction.
> * @bufs: videobuf2 buffer structures
> * @num_buffers: number of allocated/used buffers
> + * @max_num_buffers: upper limit of number of allocated/used buffers
> * @queued_list: list of buffers currently queued from userspace
> * @queued_count: number of buffers queued and ready for streaming.
> * @owned_by_drv_count: number of buffers owned by the driver
> @@ -619,8 +620,9 @@ struct vb2_queue {
> struct mutex mmap_lock;
> unsigned int memory;
> enum dma_data_direction dma_dir;
> - struct vb2_buffer *bufs[VB2_MAX_FRAME];
> + struct vb2_buffer **bufs;
> unsigned int num_buffers;
> + unsigned int max_num_buffers;
>
> struct list_head queued_list;
> unsigned int queued_count;
> @@ -1248,6 +1250,12 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
> static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
> unsigned int index)
> {
> + if (!q->bufs)
> + return NULL;
> +
> + if (index >= q->max_num_buffers)
> + return NULL;
> +
> if (index < q->num_buffers)
> return q->bufs[index];
> return NULL;
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 43/56] media: videobuf2: Be more flexible on the number of queue stored buffers
2023-11-02 8:17 ` Hans Verkuil
(?)
@ 2023-11-06 14:29 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-06 14:29 UTC (permalink / raw)
To: Hans Verkuil, mchehab, tfiga, m.szyprowski, ming.qian, ezequiel,
p.zabel, gregkh, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Le 02/11/2023 à 09:17, Hans Verkuil a écrit :
> Hi Benjamin,
>
> After a lot of testing yesterday I discovered that this patch introduces a
> bug. After this bug, running the test-media script will result in a lot of
> unbalanced counters messages:
>
> [Wed Nov 1 16:40:48 2023] videobuf2_common: unbalanced counters for queue ffff888115a07f00, buffer 11:
> [Wed Nov 1 16:40:48 2023] videobuf2_common: buf_init: 1 buf_cleanup: 0
> [Wed Nov 1 16:40:48 2023] videobuf2_common: alloc: 1 put: 0
> [Wed Nov 1 16:40:48 2023] videobuf2_common: get_dmabuf: 0 num_users: 0
>
> Apparently buf_init is called, but not buf_cleanup.
>
> I also get loads of kmemleak reports:
>
> unreferenced object 0xffff88800eae6800 (size 2048):
> comm "v4l2-compliance", pid 652, jiffies 4294937190 (age 149.650s)
> hex dump (first 32 bytes):
> e0 52 18 0c 81 88 ff ff 00 00 00 00 02 00 00 00 .R..............
> 01 00 00 00 01 00 00 00 20 2f d3 f3 3e 00 00 00 ........ /..>...
> backtrace:
> [<ffffffffacbdb08b>] __kmalloc+0x4b/0x150
> [<ffffffffc01df77a>] __vb2_queue_alloc+0x11a/0xca0 [videobuf2_common]
> [<ffffffffc01e74f5>] vb2_core_reqbufs+0x735/0xfd0 [videobuf2_common]
> [<ffffffffc046ca71>] v4l2_m2m_ioctl_reqbufs+0xc1/0x1b0 [v4l2_mem2mem]
> [<ffffffffc0231520>] __video_do_ioctl+0x8d0/0xc20 [videodev]
> [<ffffffffc0232bcc>] video_usercopy+0x48c/0xd00 [videodev]
> [<ffffffffc021e2ff>] v4l2_ioctl+0x17f/0x1f0 [videodev]
> [<ffffffffacd758ce>] __do_compat_sys_ioctl+0x13e/0x1d0
> [<ffffffffae7df992>] __do_fast_syscall_32+0x62/0xe0
> [<ffffffffae7dfb4f>] do_fast_syscall_32+0x2f/0x70
> [<ffffffffaea012ed>] entry_SYSCALL_compat_after_hwframe+0x45/0x4d
>
> Very likely the same issue.
>
> Unfortunately, the build script does not yet check for issues like this,
> you have to manually inspect the test-media logs (found in the logs directory
> after the run). It's on my TODO list.
The issue is in vb2_core_queue_release(), the patch shouldn't change
__vb2_queue_free() second parameter.
When removing this change, unbalanced messages disappear.
Regards,
Benjamin
>
> Regards,
>
> Hans
>
> On 31/10/2023 17:30, Benjamin Gaignard wrote:
>> Add 'max_num_buffers' field in vb2_queue struct to let drivers decide
>> how many buffers could be stored in a queue.
>> This require 'bufs' array to be allocated at queue init time and freed
>> when releasing the queue.
>> By default VB2_MAX_FRAME remains the limit.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
>> ---
>> .../media/common/videobuf2/videobuf2-core.c | 41 +++++++++++++++----
>> .../media/common/videobuf2/videobuf2-v4l2.c | 6 +--
>> include/media/videobuf2-core.h | 10 ++++-
>> 3 files changed, 44 insertions(+), 13 deletions(-)
>>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index c5c5ae4d213d..72ef7179d80a 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -416,7 +416,7 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
>> */
>> static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
>> {
>> - WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
>> + WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
>>
>> q->bufs[index] = vb;
>> vb->index = index;
>> @@ -449,9 +449,9 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
>> struct vb2_buffer *vb;
>> int ret;
>>
>> - /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
>> + /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
>> num_buffers = min_t(unsigned int, num_buffers,
>> - VB2_MAX_FRAME - q_num_buffers);
>> + q->max_num_buffers - q_num_buffers);
>>
>> for (buffer = 0; buffer < num_buffers; ++buffer) {
>> /* Allocate vb2 buffer structures */
>> @@ -813,7 +813,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
>> unsigned plane_sizes[VB2_MAX_PLANES] = { };
>> bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
>> unsigned int i;
>> - int ret;
>> + int ret = 0;
>>
>> if (q->streaming) {
>> dprintk(q, 1, "streaming active\n");
>> @@ -857,17 +857,22 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
>> /*
>> * Make sure the requested values and current defaults are sane.
>> */
>> - WARN_ON(q->min_buffers_needed > VB2_MAX_FRAME);
>> num_buffers = max_t(unsigned int, *count, q->min_buffers_needed);
>> - num_buffers = min_t(unsigned int, num_buffers, VB2_MAX_FRAME);
>> + num_buffers = min_t(unsigned int, num_buffers, q->max_num_buffers);
>> memset(q->alloc_devs, 0, sizeof(q->alloc_devs));
>> /*
>> * Set this now to ensure that drivers see the correct q->memory value
>> * in the queue_setup op.
>> */
>> mutex_lock(&q->mmap_lock);
>> + if (!q->bufs)
>> + q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
>> + if (!q->bufs)
>> + ret = -ENOMEM;
>> q->memory = memory;
>> mutex_unlock(&q->mmap_lock);
>> + if (ret)
>> + return ret;
>> set_queue_coherency(q, non_coherent_mem);
>>
>> /*
>> @@ -976,7 +981,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> bool no_previous_buffers = !q_num_bufs;
>> int ret = 0;
>>
>> - if (q_num_bufs == VB2_MAX_FRAME) {
>> + if (q->num_buffers == q->max_num_buffers) {
>> dprintk(q, 1, "maximum number of buffers already allocated\n");
>> return -ENOBUFS;
>> }
>> @@ -993,7 +998,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> */
>> mutex_lock(&q->mmap_lock);
>> q->memory = memory;
>> + if (!q->bufs)
>> + q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
>> + if (!q->bufs)
>> + ret = -ENOMEM;
>> mutex_unlock(&q->mmap_lock);
>> + if (ret)
>> + return ret;
>> q->waiting_for_buffers = !q->is_output;
>> set_queue_coherency(q, non_coherent_mem);
>> } else {
>> @@ -1005,7 +1016,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> return -EINVAL;
>> }
>>
>> - num_buffers = min(*count, VB2_MAX_FRAME - q_num_bufs);
>> + num_buffers = min(*count, q->max_num_buffers - q_num_bufs);
>>
>> if (requested_planes && requested_sizes) {
>> num_planes = requested_planes;
>> @@ -2465,6 +2476,12 @@ int vb2_core_queue_init(struct vb2_queue *q)
>> /*
>> * Sanity check
>> */
>> + if (!q->max_num_buffers)
>> + q->max_num_buffers = VB2_MAX_FRAME;
>> +
>> + /* The maximum is limited by offset cookie encoding pattern */
>> + q->max_num_buffers = min_t(unsigned int, q->max_num_buffers, MAX_BUFFER_INDEX);
>> +
>> if (WARN_ON(!q) ||
>> WARN_ON(!q->ops) ||
>> WARN_ON(!q->mem_ops) ||
>> @@ -2474,6 +2491,10 @@ int vb2_core_queue_init(struct vb2_queue *q)
>> WARN_ON(!q->ops->buf_queue))
>> return -EINVAL;
>>
>> + if (WARN_ON(q->max_num_buffers > MAX_BUFFER_INDEX) ||
>> + WARN_ON(q->min_buffers_needed > q->max_num_buffers))
>> + return -EINVAL;
>> +
>> if (WARN_ON(q->requires_requests && !q->supports_requests))
>> return -EINVAL;
>>
>> @@ -2519,7 +2540,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
>> __vb2_cleanup_fileio(q);
>> __vb2_queue_cancel(q);
>> mutex_lock(&q->mmap_lock);
>> - __vb2_queue_free(q, vb2_get_num_buffers(q));
>> + __vb2_queue_free(q, q->max_num_buffers);
>> + kfree(q->bufs);
>> + q->bufs = NULL;
>> q->num_buffers = 0;
>> mutex_unlock(&q->mmap_lock);
>> }
>> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> index 7d798fb15c0b..f3cf4b235c1f 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> @@ -627,7 +627,7 @@ struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp)
>> * This loop doesn't scale if there is a really large number of buffers.
>> * Maybe something more efficient will be needed in this case.
>> */
>> - for (i = 0; i < vb2_get_num_buffers(q); i++) {
>> + for (i = 0; i < q->max_num_buffers; i++) {
>> vb2 = vb2_get_buffer(q, i);
>>
>> if (!vb2)
>> @@ -1142,7 +1142,7 @@ int _vb2_fop_release(struct file *file, struct mutex *lock)
>>
>> if (lock)
>> mutex_lock(lock);
>> - if (file->private_data == vdev->queue->owner) {
>> + if (!vdev->queue->owner || file->private_data == vdev->queue->owner) {
>> vb2_queue_release(vdev->queue);
>> vdev->queue->owner = NULL;
>> }
>> @@ -1270,7 +1270,7 @@ void vb2_video_unregister_device(struct video_device *vdev)
>> */
>> get_device(&vdev->dev);
>> video_unregister_device(vdev);
>> - if (vdev->queue && vdev->queue->owner) {
>> + if (vdev->queue) {
>> struct mutex *lock = vdev->queue->lock ?
>> vdev->queue->lock : vdev->lock;
>>
>> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
>> index 8f9d9e4af5b1..e77a397195f2 100644
>> --- a/include/media/videobuf2-core.h
>> +++ b/include/media/videobuf2-core.h
>> @@ -558,6 +558,7 @@ struct vb2_buf_ops {
>> * @dma_dir: DMA mapping direction.
>> * @bufs: videobuf2 buffer structures
>> * @num_buffers: number of allocated/used buffers
>> + * @max_num_buffers: upper limit of number of allocated/used buffers
>> * @queued_list: list of buffers currently queued from userspace
>> * @queued_count: number of buffers queued and ready for streaming.
>> * @owned_by_drv_count: number of buffers owned by the driver
>> @@ -619,8 +620,9 @@ struct vb2_queue {
>> struct mutex mmap_lock;
>> unsigned int memory;
>> enum dma_data_direction dma_dir;
>> - struct vb2_buffer *bufs[VB2_MAX_FRAME];
>> + struct vb2_buffer **bufs;
>> unsigned int num_buffers;
>> + unsigned int max_num_buffers;
>>
>> struct list_head queued_list;
>> unsigned int queued_count;
>> @@ -1248,6 +1250,12 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
>> static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
>> unsigned int index)
>> {
>> + if (!q->bufs)
>> + return NULL;
>> +
>> + if (index >= q->max_num_buffers)
>> + return NULL;
>> +
>> if (index < q->num_buffers)
>> return q->bufs[index];
>> return NULL;
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 43/56] media: videobuf2: Be more flexible on the number of queue stored buffers
@ 2023-11-06 14:29 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-06 14:29 UTC (permalink / raw)
To: Hans Verkuil, mchehab, tfiga, m.szyprowski, ming.qian, ezequiel,
p.zabel, gregkh, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Le 02/11/2023 à 09:17, Hans Verkuil a écrit :
> Hi Benjamin,
>
> After a lot of testing yesterday I discovered that this patch introduces a
> bug. After this bug, running the test-media script will result in a lot of
> unbalanced counters messages:
>
> [Wed Nov 1 16:40:48 2023] videobuf2_common: unbalanced counters for queue ffff888115a07f00, buffer 11:
> [Wed Nov 1 16:40:48 2023] videobuf2_common: buf_init: 1 buf_cleanup: 0
> [Wed Nov 1 16:40:48 2023] videobuf2_common: alloc: 1 put: 0
> [Wed Nov 1 16:40:48 2023] videobuf2_common: get_dmabuf: 0 num_users: 0
>
> Apparently buf_init is called, but not buf_cleanup.
>
> I also get loads of kmemleak reports:
>
> unreferenced object 0xffff88800eae6800 (size 2048):
> comm "v4l2-compliance", pid 652, jiffies 4294937190 (age 149.650s)
> hex dump (first 32 bytes):
> e0 52 18 0c 81 88 ff ff 00 00 00 00 02 00 00 00 .R..............
> 01 00 00 00 01 00 00 00 20 2f d3 f3 3e 00 00 00 ........ /..>...
> backtrace:
> [<ffffffffacbdb08b>] __kmalloc+0x4b/0x150
> [<ffffffffc01df77a>] __vb2_queue_alloc+0x11a/0xca0 [videobuf2_common]
> [<ffffffffc01e74f5>] vb2_core_reqbufs+0x735/0xfd0 [videobuf2_common]
> [<ffffffffc046ca71>] v4l2_m2m_ioctl_reqbufs+0xc1/0x1b0 [v4l2_mem2mem]
> [<ffffffffc0231520>] __video_do_ioctl+0x8d0/0xc20 [videodev]
> [<ffffffffc0232bcc>] video_usercopy+0x48c/0xd00 [videodev]
> [<ffffffffc021e2ff>] v4l2_ioctl+0x17f/0x1f0 [videodev]
> [<ffffffffacd758ce>] __do_compat_sys_ioctl+0x13e/0x1d0
> [<ffffffffae7df992>] __do_fast_syscall_32+0x62/0xe0
> [<ffffffffae7dfb4f>] do_fast_syscall_32+0x2f/0x70
> [<ffffffffaea012ed>] entry_SYSCALL_compat_after_hwframe+0x45/0x4d
>
> Very likely the same issue.
>
> Unfortunately, the build script does not yet check for issues like this,
> you have to manually inspect the test-media logs (found in the logs directory
> after the run). It's on my TODO list.
The issue is in vb2_core_queue_release(), the patch shouldn't change
__vb2_queue_free() second parameter.
When removing this change, unbalanced messages disappear.
Regards,
Benjamin
>
> Regards,
>
> Hans
>
> On 31/10/2023 17:30, Benjamin Gaignard wrote:
>> Add 'max_num_buffers' field in vb2_queue struct to let drivers decide
>> how many buffers could be stored in a queue.
>> This require 'bufs' array to be allocated at queue init time and freed
>> when releasing the queue.
>> By default VB2_MAX_FRAME remains the limit.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
>> ---
>> .../media/common/videobuf2/videobuf2-core.c | 41 +++++++++++++++----
>> .../media/common/videobuf2/videobuf2-v4l2.c | 6 +--
>> include/media/videobuf2-core.h | 10 ++++-
>> 3 files changed, 44 insertions(+), 13 deletions(-)
>>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index c5c5ae4d213d..72ef7179d80a 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -416,7 +416,7 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
>> */
>> static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
>> {
>> - WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
>> + WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
>>
>> q->bufs[index] = vb;
>> vb->index = index;
>> @@ -449,9 +449,9 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
>> struct vb2_buffer *vb;
>> int ret;
>>
>> - /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
>> + /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
>> num_buffers = min_t(unsigned int, num_buffers,
>> - VB2_MAX_FRAME - q_num_buffers);
>> + q->max_num_buffers - q_num_buffers);
>>
>> for (buffer = 0; buffer < num_buffers; ++buffer) {
>> /* Allocate vb2 buffer structures */
>> @@ -813,7 +813,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
>> unsigned plane_sizes[VB2_MAX_PLANES] = { };
>> bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
>> unsigned int i;
>> - int ret;
>> + int ret = 0;
>>
>> if (q->streaming) {
>> dprintk(q, 1, "streaming active\n");
>> @@ -857,17 +857,22 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
>> /*
>> * Make sure the requested values and current defaults are sane.
>> */
>> - WARN_ON(q->min_buffers_needed > VB2_MAX_FRAME);
>> num_buffers = max_t(unsigned int, *count, q->min_buffers_needed);
>> - num_buffers = min_t(unsigned int, num_buffers, VB2_MAX_FRAME);
>> + num_buffers = min_t(unsigned int, num_buffers, q->max_num_buffers);
>> memset(q->alloc_devs, 0, sizeof(q->alloc_devs));
>> /*
>> * Set this now to ensure that drivers see the correct q->memory value
>> * in the queue_setup op.
>> */
>> mutex_lock(&q->mmap_lock);
>> + if (!q->bufs)
>> + q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
>> + if (!q->bufs)
>> + ret = -ENOMEM;
>> q->memory = memory;
>> mutex_unlock(&q->mmap_lock);
>> + if (ret)
>> + return ret;
>> set_queue_coherency(q, non_coherent_mem);
>>
>> /*
>> @@ -976,7 +981,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> bool no_previous_buffers = !q_num_bufs;
>> int ret = 0;
>>
>> - if (q_num_bufs == VB2_MAX_FRAME) {
>> + if (q->num_buffers == q->max_num_buffers) {
>> dprintk(q, 1, "maximum number of buffers already allocated\n");
>> return -ENOBUFS;
>> }
>> @@ -993,7 +998,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> */
>> mutex_lock(&q->mmap_lock);
>> q->memory = memory;
>> + if (!q->bufs)
>> + q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
>> + if (!q->bufs)
>> + ret = -ENOMEM;
>> mutex_unlock(&q->mmap_lock);
>> + if (ret)
>> + return ret;
>> q->waiting_for_buffers = !q->is_output;
>> set_queue_coherency(q, non_coherent_mem);
>> } else {
>> @@ -1005,7 +1016,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> return -EINVAL;
>> }
>>
>> - num_buffers = min(*count, VB2_MAX_FRAME - q_num_bufs);
>> + num_buffers = min(*count, q->max_num_buffers - q_num_bufs);
>>
>> if (requested_planes && requested_sizes) {
>> num_planes = requested_planes;
>> @@ -2465,6 +2476,12 @@ int vb2_core_queue_init(struct vb2_queue *q)
>> /*
>> * Sanity check
>> */
>> + if (!q->max_num_buffers)
>> + q->max_num_buffers = VB2_MAX_FRAME;
>> +
>> + /* The maximum is limited by offset cookie encoding pattern */
>> + q->max_num_buffers = min_t(unsigned int, q->max_num_buffers, MAX_BUFFER_INDEX);
>> +
>> if (WARN_ON(!q) ||
>> WARN_ON(!q->ops) ||
>> WARN_ON(!q->mem_ops) ||
>> @@ -2474,6 +2491,10 @@ int vb2_core_queue_init(struct vb2_queue *q)
>> WARN_ON(!q->ops->buf_queue))
>> return -EINVAL;
>>
>> + if (WARN_ON(q->max_num_buffers > MAX_BUFFER_INDEX) ||
>> + WARN_ON(q->min_buffers_needed > q->max_num_buffers))
>> + return -EINVAL;
>> +
>> if (WARN_ON(q->requires_requests && !q->supports_requests))
>> return -EINVAL;
>>
>> @@ -2519,7 +2540,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
>> __vb2_cleanup_fileio(q);
>> __vb2_queue_cancel(q);
>> mutex_lock(&q->mmap_lock);
>> - __vb2_queue_free(q, vb2_get_num_buffers(q));
>> + __vb2_queue_free(q, q->max_num_buffers);
>> + kfree(q->bufs);
>> + q->bufs = NULL;
>> q->num_buffers = 0;
>> mutex_unlock(&q->mmap_lock);
>> }
>> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> index 7d798fb15c0b..f3cf4b235c1f 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> @@ -627,7 +627,7 @@ struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp)
>> * This loop doesn't scale if there is a really large number of buffers.
>> * Maybe something more efficient will be needed in this case.
>> */
>> - for (i = 0; i < vb2_get_num_buffers(q); i++) {
>> + for (i = 0; i < q->max_num_buffers; i++) {
>> vb2 = vb2_get_buffer(q, i);
>>
>> if (!vb2)
>> @@ -1142,7 +1142,7 @@ int _vb2_fop_release(struct file *file, struct mutex *lock)
>>
>> if (lock)
>> mutex_lock(lock);
>> - if (file->private_data == vdev->queue->owner) {
>> + if (!vdev->queue->owner || file->private_data == vdev->queue->owner) {
>> vb2_queue_release(vdev->queue);
>> vdev->queue->owner = NULL;
>> }
>> @@ -1270,7 +1270,7 @@ void vb2_video_unregister_device(struct video_device *vdev)
>> */
>> get_device(&vdev->dev);
>> video_unregister_device(vdev);
>> - if (vdev->queue && vdev->queue->owner) {
>> + if (vdev->queue) {
>> struct mutex *lock = vdev->queue->lock ?
>> vdev->queue->lock : vdev->lock;
>>
>> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
>> index 8f9d9e4af5b1..e77a397195f2 100644
>> --- a/include/media/videobuf2-core.h
>> +++ b/include/media/videobuf2-core.h
>> @@ -558,6 +558,7 @@ struct vb2_buf_ops {
>> * @dma_dir: DMA mapping direction.
>> * @bufs: videobuf2 buffer structures
>> * @num_buffers: number of allocated/used buffers
>> + * @max_num_buffers: upper limit of number of allocated/used buffers
>> * @queued_list: list of buffers currently queued from userspace
>> * @queued_count: number of buffers queued and ready for streaming.
>> * @owned_by_drv_count: number of buffers owned by the driver
>> @@ -619,8 +620,9 @@ struct vb2_queue {
>> struct mutex mmap_lock;
>> unsigned int memory;
>> enum dma_data_direction dma_dir;
>> - struct vb2_buffer *bufs[VB2_MAX_FRAME];
>> + struct vb2_buffer **bufs;
>> unsigned int num_buffers;
>> + unsigned int max_num_buffers;
>>
>> struct list_head queued_list;
>> unsigned int queued_count;
>> @@ -1248,6 +1250,12 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
>> static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
>> unsigned int index)
>> {
>> + if (!q->bufs)
>> + return NULL;
>> +
>> + if (index >= q->max_num_buffers)
>> + return NULL;
>> +
>> if (index < q->num_buffers)
>> return q->bufs[index];
>> return NULL;
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 43/56] media: videobuf2: Be more flexible on the number of queue stored buffers
@ 2023-11-06 14:29 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-06 14:29 UTC (permalink / raw)
To: Hans Verkuil, mchehab, tfiga, m.szyprowski, ming.qian, ezequiel,
p.zabel, gregkh, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Le 02/11/2023 à 09:17, Hans Verkuil a écrit :
> Hi Benjamin,
>
> After a lot of testing yesterday I discovered that this patch introduces a
> bug. After this bug, running the test-media script will result in a lot of
> unbalanced counters messages:
>
> [Wed Nov 1 16:40:48 2023] videobuf2_common: unbalanced counters for queue ffff888115a07f00, buffer 11:
> [Wed Nov 1 16:40:48 2023] videobuf2_common: buf_init: 1 buf_cleanup: 0
> [Wed Nov 1 16:40:48 2023] videobuf2_common: alloc: 1 put: 0
> [Wed Nov 1 16:40:48 2023] videobuf2_common: get_dmabuf: 0 num_users: 0
>
> Apparently buf_init is called, but not buf_cleanup.
>
> I also get loads of kmemleak reports:
>
> unreferenced object 0xffff88800eae6800 (size 2048):
> comm "v4l2-compliance", pid 652, jiffies 4294937190 (age 149.650s)
> hex dump (first 32 bytes):
> e0 52 18 0c 81 88 ff ff 00 00 00 00 02 00 00 00 .R..............
> 01 00 00 00 01 00 00 00 20 2f d3 f3 3e 00 00 00 ........ /..>...
> backtrace:
> [<ffffffffacbdb08b>] __kmalloc+0x4b/0x150
> [<ffffffffc01df77a>] __vb2_queue_alloc+0x11a/0xca0 [videobuf2_common]
> [<ffffffffc01e74f5>] vb2_core_reqbufs+0x735/0xfd0 [videobuf2_common]
> [<ffffffffc046ca71>] v4l2_m2m_ioctl_reqbufs+0xc1/0x1b0 [v4l2_mem2mem]
> [<ffffffffc0231520>] __video_do_ioctl+0x8d0/0xc20 [videodev]
> [<ffffffffc0232bcc>] video_usercopy+0x48c/0xd00 [videodev]
> [<ffffffffc021e2ff>] v4l2_ioctl+0x17f/0x1f0 [videodev]
> [<ffffffffacd758ce>] __do_compat_sys_ioctl+0x13e/0x1d0
> [<ffffffffae7df992>] __do_fast_syscall_32+0x62/0xe0
> [<ffffffffae7dfb4f>] do_fast_syscall_32+0x2f/0x70
> [<ffffffffaea012ed>] entry_SYSCALL_compat_after_hwframe+0x45/0x4d
>
> Very likely the same issue.
>
> Unfortunately, the build script does not yet check for issues like this,
> you have to manually inspect the test-media logs (found in the logs directory
> after the run). It's on my TODO list.
The issue is in vb2_core_queue_release(), the patch shouldn't change
__vb2_queue_free() second parameter.
When removing this change, unbalanced messages disappear.
Regards,
Benjamin
>
> Regards,
>
> Hans
>
> On 31/10/2023 17:30, Benjamin Gaignard wrote:
>> Add 'max_num_buffers' field in vb2_queue struct to let drivers decide
>> how many buffers could be stored in a queue.
>> This require 'bufs' array to be allocated at queue init time and freed
>> when releasing the queue.
>> By default VB2_MAX_FRAME remains the limit.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
>> ---
>> .../media/common/videobuf2/videobuf2-core.c | 41 +++++++++++++++----
>> .../media/common/videobuf2/videobuf2-v4l2.c | 6 +--
>> include/media/videobuf2-core.h | 10 ++++-
>> 3 files changed, 44 insertions(+), 13 deletions(-)
>>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index c5c5ae4d213d..72ef7179d80a 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -416,7 +416,7 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
>> */
>> static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
>> {
>> - WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
>> + WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
>>
>> q->bufs[index] = vb;
>> vb->index = index;
>> @@ -449,9 +449,9 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
>> struct vb2_buffer *vb;
>> int ret;
>>
>> - /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
>> + /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
>> num_buffers = min_t(unsigned int, num_buffers,
>> - VB2_MAX_FRAME - q_num_buffers);
>> + q->max_num_buffers - q_num_buffers);
>>
>> for (buffer = 0; buffer < num_buffers; ++buffer) {
>> /* Allocate vb2 buffer structures */
>> @@ -813,7 +813,7 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
>> unsigned plane_sizes[VB2_MAX_PLANES] = { };
>> bool non_coherent_mem = flags & V4L2_MEMORY_FLAG_NON_COHERENT;
>> unsigned int i;
>> - int ret;
>> + int ret = 0;
>>
>> if (q->streaming) {
>> dprintk(q, 1, "streaming active\n");
>> @@ -857,17 +857,22 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
>> /*
>> * Make sure the requested values and current defaults are sane.
>> */
>> - WARN_ON(q->min_buffers_needed > VB2_MAX_FRAME);
>> num_buffers = max_t(unsigned int, *count, q->min_buffers_needed);
>> - num_buffers = min_t(unsigned int, num_buffers, VB2_MAX_FRAME);
>> + num_buffers = min_t(unsigned int, num_buffers, q->max_num_buffers);
>> memset(q->alloc_devs, 0, sizeof(q->alloc_devs));
>> /*
>> * Set this now to ensure that drivers see the correct q->memory value
>> * in the queue_setup op.
>> */
>> mutex_lock(&q->mmap_lock);
>> + if (!q->bufs)
>> + q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
>> + if (!q->bufs)
>> + ret = -ENOMEM;
>> q->memory = memory;
>> mutex_unlock(&q->mmap_lock);
>> + if (ret)
>> + return ret;
>> set_queue_coherency(q, non_coherent_mem);
>>
>> /*
>> @@ -976,7 +981,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> bool no_previous_buffers = !q_num_bufs;
>> int ret = 0;
>>
>> - if (q_num_bufs == VB2_MAX_FRAME) {
>> + if (q->num_buffers == q->max_num_buffers) {
>> dprintk(q, 1, "maximum number of buffers already allocated\n");
>> return -ENOBUFS;
>> }
>> @@ -993,7 +998,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> */
>> mutex_lock(&q->mmap_lock);
>> q->memory = memory;
>> + if (!q->bufs)
>> + q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
>> + if (!q->bufs)
>> + ret = -ENOMEM;
>> mutex_unlock(&q->mmap_lock);
>> + if (ret)
>> + return ret;
>> q->waiting_for_buffers = !q->is_output;
>> set_queue_coherency(q, non_coherent_mem);
>> } else {
>> @@ -1005,7 +1016,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> return -EINVAL;
>> }
>>
>> - num_buffers = min(*count, VB2_MAX_FRAME - q_num_bufs);
>> + num_buffers = min(*count, q->max_num_buffers - q_num_bufs);
>>
>> if (requested_planes && requested_sizes) {
>> num_planes = requested_planes;
>> @@ -2465,6 +2476,12 @@ int vb2_core_queue_init(struct vb2_queue *q)
>> /*
>> * Sanity check
>> */
>> + if (!q->max_num_buffers)
>> + q->max_num_buffers = VB2_MAX_FRAME;
>> +
>> + /* The maximum is limited by offset cookie encoding pattern */
>> + q->max_num_buffers = min_t(unsigned int, q->max_num_buffers, MAX_BUFFER_INDEX);
>> +
>> if (WARN_ON(!q) ||
>> WARN_ON(!q->ops) ||
>> WARN_ON(!q->mem_ops) ||
>> @@ -2474,6 +2491,10 @@ int vb2_core_queue_init(struct vb2_queue *q)
>> WARN_ON(!q->ops->buf_queue))
>> return -EINVAL;
>>
>> + if (WARN_ON(q->max_num_buffers > MAX_BUFFER_INDEX) ||
>> + WARN_ON(q->min_buffers_needed > q->max_num_buffers))
>> + return -EINVAL;
>> +
>> if (WARN_ON(q->requires_requests && !q->supports_requests))
>> return -EINVAL;
>>
>> @@ -2519,7 +2540,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
>> __vb2_cleanup_fileio(q);
>> __vb2_queue_cancel(q);
>> mutex_lock(&q->mmap_lock);
>> - __vb2_queue_free(q, vb2_get_num_buffers(q));
>> + __vb2_queue_free(q, q->max_num_buffers);
>> + kfree(q->bufs);
>> + q->bufs = NULL;
>> q->num_buffers = 0;
>> mutex_unlock(&q->mmap_lock);
>> }
>> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> index 7d798fb15c0b..f3cf4b235c1f 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> @@ -627,7 +627,7 @@ struct vb2_buffer *vb2_find_buffer(struct vb2_queue *q, u64 timestamp)
>> * This loop doesn't scale if there is a really large number of buffers.
>> * Maybe something more efficient will be needed in this case.
>> */
>> - for (i = 0; i < vb2_get_num_buffers(q); i++) {
>> + for (i = 0; i < q->max_num_buffers; i++) {
>> vb2 = vb2_get_buffer(q, i);
>>
>> if (!vb2)
>> @@ -1142,7 +1142,7 @@ int _vb2_fop_release(struct file *file, struct mutex *lock)
>>
>> if (lock)
>> mutex_lock(lock);
>> - if (file->private_data == vdev->queue->owner) {
>> + if (!vdev->queue->owner || file->private_data == vdev->queue->owner) {
>> vb2_queue_release(vdev->queue);
>> vdev->queue->owner = NULL;
>> }
>> @@ -1270,7 +1270,7 @@ void vb2_video_unregister_device(struct video_device *vdev)
>> */
>> get_device(&vdev->dev);
>> video_unregister_device(vdev);
>> - if (vdev->queue && vdev->queue->owner) {
>> + if (vdev->queue) {
>> struct mutex *lock = vdev->queue->lock ?
>> vdev->queue->lock : vdev->lock;
>>
>> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
>> index 8f9d9e4af5b1..e77a397195f2 100644
>> --- a/include/media/videobuf2-core.h
>> +++ b/include/media/videobuf2-core.h
>> @@ -558,6 +558,7 @@ struct vb2_buf_ops {
>> * @dma_dir: DMA mapping direction.
>> * @bufs: videobuf2 buffer structures
>> * @num_buffers: number of allocated/used buffers
>> + * @max_num_buffers: upper limit of number of allocated/used buffers
>> * @queued_list: list of buffers currently queued from userspace
>> * @queued_count: number of buffers queued and ready for streaming.
>> * @owned_by_drv_count: number of buffers owned by the driver
>> @@ -619,8 +620,9 @@ struct vb2_queue {
>> struct mutex mmap_lock;
>> unsigned int memory;
>> enum dma_data_direction dma_dir;
>> - struct vb2_buffer *bufs[VB2_MAX_FRAME];
>> + struct vb2_buffer **bufs;
>> unsigned int num_buffers;
>> + unsigned int max_num_buffers;
>>
>> struct list_head queued_list;
>> unsigned int queued_count;
>> @@ -1248,6 +1250,12 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
>> static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
>> unsigned int index)
>> {
>> + if (!q->bufs)
>> + return NULL;
>> +
>> + if (index >= q->max_num_buffers)
>> + return NULL;
>> +
>> if (index < q->num_buffers)
>> return q->bufs[index];
>> return NULL;
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 02/56] media: videobuf2: Rework offset 'cookie' encoding pattern
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-08 6:23 ` Tomasz Figa
-1 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-08 6:23 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Hi Benjamin,
On Tue, Oct 31, 2023 at 05:30:10PM +0100, Benjamin Gaignard wrote:
> Change how offset 'cookie' field value is computed to make possible
> to use more buffers.
> The maximum number of buffers depends of PAGE_SHIFT value and can
> go up to 0x7fff when PAGE_SHIFT = 12.
> With this encoding pattern we know the maximum number that a queue
> could store so we can check it at queue init time.
> It also make easier and faster to find buffer and plane from using
> the offset field.
> Change __find_plane_by_offset() prototype to return the video buffer
> itself rather than it index.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 73 +++++++++----------
> 1 file changed, 35 insertions(+), 38 deletions(-)
>
Thanks a lot for working on this series. Just one comment inline.
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index a5e57affeb30..09be8e026044 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -31,6 +31,11 @@
>
> #include <trace/events/vb2.h>
>
> +#define PLANE_INDEX_SHIFT (PAGE_SHIFT + 3)
> +#define PLANE_INDEX_MASK 0x7
Could we somehow ensure that it indeed matches VIDEO_MAX_PLANES?
One thing that comes to my mind would be
#define PLANE_INDEX_BITS 3
#define PLANE_INDEX_SHIFT (PAGE_SHIFT + PLANE_INDEX_BITS)
#define PLANE_INDEX_MASK BIT_MASK(PLANE_INDEX_BITS)
BUILD_BUG_ON(BIT(PLANE_INDEX_BITS) != VIDEO_MAX_PLANES);
Alternatively we could change the videodev2.h, so that we have
#define VIDEO_MAX_PLANES_BITS 3
#define VIDEO_MAX_PLANES (1U < VIDEO_MAX_PLANES_BITS)
and then we can just VIDEO_MAX_PLANES_BITS in our definitions in this file
and no checks would be necessary.
Best regards,
Tomasz
> +#define MAX_BUFFER_INDEX BIT_MASK(30 - PLANE_INDEX_SHIFT)
> +#define BUFFER_INDEX_MASK (MAX_BUFFER_INDEX - 1)
> +
> static int debug;
> module_param(debug, int, 0644);
>
> @@ -358,21 +363,27 @@ static void __setup_offsets(struct vb2_buffer *vb)
> unsigned int plane;
> unsigned long offset = 0;
>
> - if (vb->index) {
> - struct vb2_buffer *prev = q->bufs[vb->index - 1];
> - struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
> -
> - offset = PAGE_ALIGN(p->m.offset + p->length);
> - }
> + /*
> + * The offset "cookie" value has the following constraints:
> + * - a buffer can have up to 8 planes.
> + * - v4l2 mem2mem uses bit 30 to distinguish between
> + * OUTPUT (aka "source", bit 30 is 0) and
> + * CAPTURE (aka "destination", bit 30 is 1) buffers.
> + * - must be page aligned
> + * That led to this bit mapping when PAGE_SHIFT = 12:
> + * |30 |29 15|14 12|11 0|
> + * |DST_QUEUE_OFF_BASE|buffer index|plane index| 0 |
> + * where there are 15 bits to store the buffer index.
> + * Depending on PAGE_SHIFT value we can have fewer bits
> + * to store the buffer index.
> + */
> + offset = vb->index << PLANE_INDEX_SHIFT;
>
> for (plane = 0; plane < vb->num_planes; ++plane) {
> - vb->planes[plane].m.offset = offset;
> + vb->planes[plane].m.offset = offset + (plane << PAGE_SHIFT);
>
> dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
> vb->index, plane, offset);
> -
> - offset += vb->planes[plane].length;
> - offset = PAGE_ALIGN(offset);
> }
> }
>
> @@ -2188,10 +2199,9 @@ EXPORT_SYMBOL_GPL(vb2_core_streamoff);
> * __find_plane_by_offset() - find plane associated with the given offset
> */
> static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
> - unsigned int *_buffer, unsigned int *_plane)
> + struct vb2_buffer **vb, unsigned int *plane)
> {
> - struct vb2_buffer *vb;
> - unsigned int buffer, plane;
> + unsigned int buffer;
>
> /*
> * Sanity checks to ensure the lock is held, MEMORY_MMAP is
> @@ -2209,24 +2219,15 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
> return -EBUSY;
> }
>
> - /*
> - * Go over all buffers and their planes, comparing the given offset
> - * with an offset assigned to each plane. If a match is found,
> - * return its buffer and plane numbers.
> - */
> - for (buffer = 0; buffer < q->num_buffers; ++buffer) {
> - vb = q->bufs[buffer];
> + /* Get buffer and plane from the offset */
> + buffer = (offset >> PLANE_INDEX_SHIFT) & BUFFER_INDEX_MASK;
> + *plane = (offset >> PAGE_SHIFT) & PLANE_INDEX_MASK;
>
> - for (plane = 0; plane < vb->num_planes; ++plane) {
> - if (vb->planes[plane].m.offset == offset) {
> - *_buffer = buffer;
> - *_plane = plane;
> - return 0;
> - }
> - }
> - }
> + if (buffer >= q->num_buffers || *plane >= q->bufs[buffer]->num_planes)
> + return -EINVAL;
>
> - return -EINVAL;
> + *vb = q->bufs[buffer];
> + return 0;
> }
>
> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> @@ -2306,7 +2307,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
> {
> unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
> struct vb2_buffer *vb;
> - unsigned int buffer = 0, plane = 0;
> + unsigned int plane = 0;
> int ret;
> unsigned long length;
>
> @@ -2335,12 +2336,10 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
> * Find the plane corresponding to the offset passed by userspace. This
> * will return an error if not MEMORY_MMAP or file I/O is in progress.
> */
> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
> if (ret)
> goto unlock;
>
> - vb = q->bufs[buffer];
> -
> /*
> * MMAP requires page_aligned buffers.
> * The buffer length was page_aligned at __vb2_buf_mem_alloc(),
> @@ -2368,7 +2367,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
> if (ret)
> return ret;
>
> - dprintk(q, 3, "buffer %d, plane %d successfully mapped\n", buffer, plane);
> + dprintk(q, 3, "buffer %u, plane %d successfully mapped\n", vb->index, plane);
> return 0;
> }
> EXPORT_SYMBOL_GPL(vb2_mmap);
> @@ -2382,7 +2381,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
> {
> unsigned long offset = pgoff << PAGE_SHIFT;
> struct vb2_buffer *vb;
> - unsigned int buffer, plane;
> + unsigned int plane;
> void *vaddr;
> int ret;
>
> @@ -2392,12 +2391,10 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
> * Find the plane corresponding to the offset passed by userspace. This
> * will return an error if not MEMORY_MMAP or file I/O is in progress.
> */
> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
> if (ret)
> goto unlock;
>
> - vb = q->bufs[buffer];
> -
> vaddr = vb2_plane_vaddr(vb, plane);
> mutex_unlock(&q->mmap_lock);
> return vaddr ? (unsigned long)vaddr : -EINVAL;
> --
> 2.39.2
>
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 02/56] media: videobuf2: Rework offset 'cookie' encoding pattern
@ 2023-11-08 6:23 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-08 6:23 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Hi Benjamin,
On Tue, Oct 31, 2023 at 05:30:10PM +0100, Benjamin Gaignard wrote:
> Change how offset 'cookie' field value is computed to make possible
> to use more buffers.
> The maximum number of buffers depends of PAGE_SHIFT value and can
> go up to 0x7fff when PAGE_SHIFT = 12.
> With this encoding pattern we know the maximum number that a queue
> could store so we can check it at queue init time.
> It also make easier and faster to find buffer and plane from using
> the offset field.
> Change __find_plane_by_offset() prototype to return the video buffer
> itself rather than it index.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 73 +++++++++----------
> 1 file changed, 35 insertions(+), 38 deletions(-)
>
Thanks a lot for working on this series. Just one comment inline.
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index a5e57affeb30..09be8e026044 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -31,6 +31,11 @@
>
> #include <trace/events/vb2.h>
>
> +#define PLANE_INDEX_SHIFT (PAGE_SHIFT + 3)
> +#define PLANE_INDEX_MASK 0x7
Could we somehow ensure that it indeed matches VIDEO_MAX_PLANES?
One thing that comes to my mind would be
#define PLANE_INDEX_BITS 3
#define PLANE_INDEX_SHIFT (PAGE_SHIFT + PLANE_INDEX_BITS)
#define PLANE_INDEX_MASK BIT_MASK(PLANE_INDEX_BITS)
BUILD_BUG_ON(BIT(PLANE_INDEX_BITS) != VIDEO_MAX_PLANES);
Alternatively we could change the videodev2.h, so that we have
#define VIDEO_MAX_PLANES_BITS 3
#define VIDEO_MAX_PLANES (1U < VIDEO_MAX_PLANES_BITS)
and then we can just VIDEO_MAX_PLANES_BITS in our definitions in this file
and no checks would be necessary.
Best regards,
Tomasz
> +#define MAX_BUFFER_INDEX BIT_MASK(30 - PLANE_INDEX_SHIFT)
> +#define BUFFER_INDEX_MASK (MAX_BUFFER_INDEX - 1)
> +
> static int debug;
> module_param(debug, int, 0644);
>
> @@ -358,21 +363,27 @@ static void __setup_offsets(struct vb2_buffer *vb)
> unsigned int plane;
> unsigned long offset = 0;
>
> - if (vb->index) {
> - struct vb2_buffer *prev = q->bufs[vb->index - 1];
> - struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
> -
> - offset = PAGE_ALIGN(p->m.offset + p->length);
> - }
> + /*
> + * The offset "cookie" value has the following constraints:
> + * - a buffer can have up to 8 planes.
> + * - v4l2 mem2mem uses bit 30 to distinguish between
> + * OUTPUT (aka "source", bit 30 is 0) and
> + * CAPTURE (aka "destination", bit 30 is 1) buffers.
> + * - must be page aligned
> + * That led to this bit mapping when PAGE_SHIFT = 12:
> + * |30 |29 15|14 12|11 0|
> + * |DST_QUEUE_OFF_BASE|buffer index|plane index| 0 |
> + * where there are 15 bits to store the buffer index.
> + * Depending on PAGE_SHIFT value we can have fewer bits
> + * to store the buffer index.
> + */
> + offset = vb->index << PLANE_INDEX_SHIFT;
>
> for (plane = 0; plane < vb->num_planes; ++plane) {
> - vb->planes[plane].m.offset = offset;
> + vb->planes[plane].m.offset = offset + (plane << PAGE_SHIFT);
>
> dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
> vb->index, plane, offset);
> -
> - offset += vb->planes[plane].length;
> - offset = PAGE_ALIGN(offset);
> }
> }
>
> @@ -2188,10 +2199,9 @@ EXPORT_SYMBOL_GPL(vb2_core_streamoff);
> * __find_plane_by_offset() - find plane associated with the given offset
> */
> static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
> - unsigned int *_buffer, unsigned int *_plane)
> + struct vb2_buffer **vb, unsigned int *plane)
> {
> - struct vb2_buffer *vb;
> - unsigned int buffer, plane;
> + unsigned int buffer;
>
> /*
> * Sanity checks to ensure the lock is held, MEMORY_MMAP is
> @@ -2209,24 +2219,15 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
> return -EBUSY;
> }
>
> - /*
> - * Go over all buffers and their planes, comparing the given offset
> - * with an offset assigned to each plane. If a match is found,
> - * return its buffer and plane numbers.
> - */
> - for (buffer = 0; buffer < q->num_buffers; ++buffer) {
> - vb = q->bufs[buffer];
> + /* Get buffer and plane from the offset */
> + buffer = (offset >> PLANE_INDEX_SHIFT) & BUFFER_INDEX_MASK;
> + *plane = (offset >> PAGE_SHIFT) & PLANE_INDEX_MASK;
>
> - for (plane = 0; plane < vb->num_planes; ++plane) {
> - if (vb->planes[plane].m.offset == offset) {
> - *_buffer = buffer;
> - *_plane = plane;
> - return 0;
> - }
> - }
> - }
> + if (buffer >= q->num_buffers || *plane >= q->bufs[buffer]->num_planes)
> + return -EINVAL;
>
> - return -EINVAL;
> + *vb = q->bufs[buffer];
> + return 0;
> }
>
> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> @@ -2306,7 +2307,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
> {
> unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
> struct vb2_buffer *vb;
> - unsigned int buffer = 0, plane = 0;
> + unsigned int plane = 0;
> int ret;
> unsigned long length;
>
> @@ -2335,12 +2336,10 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
> * Find the plane corresponding to the offset passed by userspace. This
> * will return an error if not MEMORY_MMAP or file I/O is in progress.
> */
> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
> if (ret)
> goto unlock;
>
> - vb = q->bufs[buffer];
> -
> /*
> * MMAP requires page_aligned buffers.
> * The buffer length was page_aligned at __vb2_buf_mem_alloc(),
> @@ -2368,7 +2367,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
> if (ret)
> return ret;
>
> - dprintk(q, 3, "buffer %d, plane %d successfully mapped\n", buffer, plane);
> + dprintk(q, 3, "buffer %u, plane %d successfully mapped\n", vb->index, plane);
> return 0;
> }
> EXPORT_SYMBOL_GPL(vb2_mmap);
> @@ -2382,7 +2381,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
> {
> unsigned long offset = pgoff << PAGE_SHIFT;
> struct vb2_buffer *vb;
> - unsigned int buffer, plane;
> + unsigned int plane;
> void *vaddr;
> int ret;
>
> @@ -2392,12 +2391,10 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
> * Find the plane corresponding to the offset passed by userspace. This
> * will return an error if not MEMORY_MMAP or file I/O is in progress.
> */
> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
> if (ret)
> goto unlock;
>
> - vb = q->bufs[buffer];
> -
> vaddr = vb2_plane_vaddr(vb, plane);
> mutex_unlock(&q->mmap_lock);
> return vaddr ? (unsigned long)vaddr : -EINVAL;
> --
> 2.39.2
>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 02/56] media: videobuf2: Rework offset 'cookie' encoding pattern
@ 2023-11-08 6:23 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-08 6:23 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Hi Benjamin,
On Tue, Oct 31, 2023 at 05:30:10PM +0100, Benjamin Gaignard wrote:
> Change how offset 'cookie' field value is computed to make possible
> to use more buffers.
> The maximum number of buffers depends of PAGE_SHIFT value and can
> go up to 0x7fff when PAGE_SHIFT = 12.
> With this encoding pattern we know the maximum number that a queue
> could store so we can check it at queue init time.
> It also make easier and faster to find buffer and plane from using
> the offset field.
> Change __find_plane_by_offset() prototype to return the video buffer
> itself rather than it index.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 73 +++++++++----------
> 1 file changed, 35 insertions(+), 38 deletions(-)
>
Thanks a lot for working on this series. Just one comment inline.
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index a5e57affeb30..09be8e026044 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -31,6 +31,11 @@
>
> #include <trace/events/vb2.h>
>
> +#define PLANE_INDEX_SHIFT (PAGE_SHIFT + 3)
> +#define PLANE_INDEX_MASK 0x7
Could we somehow ensure that it indeed matches VIDEO_MAX_PLANES?
One thing that comes to my mind would be
#define PLANE_INDEX_BITS 3
#define PLANE_INDEX_SHIFT (PAGE_SHIFT + PLANE_INDEX_BITS)
#define PLANE_INDEX_MASK BIT_MASK(PLANE_INDEX_BITS)
BUILD_BUG_ON(BIT(PLANE_INDEX_BITS) != VIDEO_MAX_PLANES);
Alternatively we could change the videodev2.h, so that we have
#define VIDEO_MAX_PLANES_BITS 3
#define VIDEO_MAX_PLANES (1U < VIDEO_MAX_PLANES_BITS)
and then we can just VIDEO_MAX_PLANES_BITS in our definitions in this file
and no checks would be necessary.
Best regards,
Tomasz
> +#define MAX_BUFFER_INDEX BIT_MASK(30 - PLANE_INDEX_SHIFT)
> +#define BUFFER_INDEX_MASK (MAX_BUFFER_INDEX - 1)
> +
> static int debug;
> module_param(debug, int, 0644);
>
> @@ -358,21 +363,27 @@ static void __setup_offsets(struct vb2_buffer *vb)
> unsigned int plane;
> unsigned long offset = 0;
>
> - if (vb->index) {
> - struct vb2_buffer *prev = q->bufs[vb->index - 1];
> - struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
> -
> - offset = PAGE_ALIGN(p->m.offset + p->length);
> - }
> + /*
> + * The offset "cookie" value has the following constraints:
> + * - a buffer can have up to 8 planes.
> + * - v4l2 mem2mem uses bit 30 to distinguish between
> + * OUTPUT (aka "source", bit 30 is 0) and
> + * CAPTURE (aka "destination", bit 30 is 1) buffers.
> + * - must be page aligned
> + * That led to this bit mapping when PAGE_SHIFT = 12:
> + * |30 |29 15|14 12|11 0|
> + * |DST_QUEUE_OFF_BASE|buffer index|plane index| 0 |
> + * where there are 15 bits to store the buffer index.
> + * Depending on PAGE_SHIFT value we can have fewer bits
> + * to store the buffer index.
> + */
> + offset = vb->index << PLANE_INDEX_SHIFT;
>
> for (plane = 0; plane < vb->num_planes; ++plane) {
> - vb->planes[plane].m.offset = offset;
> + vb->planes[plane].m.offset = offset + (plane << PAGE_SHIFT);
>
> dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
> vb->index, plane, offset);
> -
> - offset += vb->planes[plane].length;
> - offset = PAGE_ALIGN(offset);
> }
> }
>
> @@ -2188,10 +2199,9 @@ EXPORT_SYMBOL_GPL(vb2_core_streamoff);
> * __find_plane_by_offset() - find plane associated with the given offset
> */
> static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
> - unsigned int *_buffer, unsigned int *_plane)
> + struct vb2_buffer **vb, unsigned int *plane)
> {
> - struct vb2_buffer *vb;
> - unsigned int buffer, plane;
> + unsigned int buffer;
>
> /*
> * Sanity checks to ensure the lock is held, MEMORY_MMAP is
> @@ -2209,24 +2219,15 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
> return -EBUSY;
> }
>
> - /*
> - * Go over all buffers and their planes, comparing the given offset
> - * with an offset assigned to each plane. If a match is found,
> - * return its buffer and plane numbers.
> - */
> - for (buffer = 0; buffer < q->num_buffers; ++buffer) {
> - vb = q->bufs[buffer];
> + /* Get buffer and plane from the offset */
> + buffer = (offset >> PLANE_INDEX_SHIFT) & BUFFER_INDEX_MASK;
> + *plane = (offset >> PAGE_SHIFT) & PLANE_INDEX_MASK;
>
> - for (plane = 0; plane < vb->num_planes; ++plane) {
> - if (vb->planes[plane].m.offset == offset) {
> - *_buffer = buffer;
> - *_plane = plane;
> - return 0;
> - }
> - }
> - }
> + if (buffer >= q->num_buffers || *plane >= q->bufs[buffer]->num_planes)
> + return -EINVAL;
>
> - return -EINVAL;
> + *vb = q->bufs[buffer];
> + return 0;
> }
>
> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> @@ -2306,7 +2307,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
> {
> unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
> struct vb2_buffer *vb;
> - unsigned int buffer = 0, plane = 0;
> + unsigned int plane = 0;
> int ret;
> unsigned long length;
>
> @@ -2335,12 +2336,10 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
> * Find the plane corresponding to the offset passed by userspace. This
> * will return an error if not MEMORY_MMAP or file I/O is in progress.
> */
> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
> if (ret)
> goto unlock;
>
> - vb = q->bufs[buffer];
> -
> /*
> * MMAP requires page_aligned buffers.
> * The buffer length was page_aligned at __vb2_buf_mem_alloc(),
> @@ -2368,7 +2367,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
> if (ret)
> return ret;
>
> - dprintk(q, 3, "buffer %d, plane %d successfully mapped\n", buffer, plane);
> + dprintk(q, 3, "buffer %u, plane %d successfully mapped\n", vb->index, plane);
> return 0;
> }
> EXPORT_SYMBOL_GPL(vb2_mmap);
> @@ -2382,7 +2381,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
> {
> unsigned long offset = pgoff << PAGE_SHIFT;
> struct vb2_buffer *vb;
> - unsigned int buffer, plane;
> + unsigned int plane;
> void *vaddr;
> int ret;
>
> @@ -2392,12 +2391,10 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
> * Find the plane corresponding to the offset passed by userspace. This
> * will return an error if not MEMORY_MMAP or file I/O is in progress.
> */
> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
> if (ret)
> goto unlock;
>
> - vb = q->bufs[buffer];
> -
> vaddr = vb2_plane_vaddr(vb, plane);
> mutex_unlock(&q->mmap_lock);
> return vaddr ? (unsigned long)vaddr : -EINVAL;
> --
> 2.39.2
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 04/56] media: videobuf2: Use vb2_buffer instead of index
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-08 8:08 ` Tomasz Figa
-1 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-08 8:08 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Hi Benjamin,
On Tue, Oct 31, 2023 at 05:30:12PM +0100, Benjamin Gaignard wrote:
> Directly use vb2_buffer pointer instead of index inside queue array.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 40 +++++----------
> .../media/common/videobuf2/videobuf2-v4l2.c | 51 +++++++++++--------
> drivers/media/dvb-core/dvb_vb2.c | 6 +--
> include/media/videobuf2-core.h | 16 +++---
> 4 files changed, 53 insertions(+), 60 deletions(-)
>
I just wanted to say that I really love this patch. Going well in the
direction I wanted to push it to, but never had enough time to do it.
Thanks!
Best regards,
Tomasz
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 47dba2a20d73..968b7c0e7934 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -654,9 +654,9 @@ static bool __buffers_in_use(struct vb2_queue *q)
> return false;
> }
>
> -void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb)
> +void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> {
> - call_void_bufop(q, fill_user_buffer, q->bufs[index], pb);
> + call_void_bufop(q, fill_user_buffer, vb, pb);
> }
> EXPORT_SYMBOL_GPL(vb2_core_querybuf);
>
> @@ -1490,9 +1490,6 @@ static void vb2_req_unprepare(struct media_request_object *obj)
> WARN_ON(!vb->req_obj.req);
> }
>
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> - struct media_request *req);
> -
> static void vb2_req_queue(struct media_request_object *obj)
> {
> struct vb2_buffer *vb = container_of(obj, struct vb2_buffer, req_obj);
> @@ -1507,7 +1504,7 @@ static void vb2_req_queue(struct media_request_object *obj)
> * set. We just ignore that, and expect this will be caught the
> * next time vb2_req_prepare() is called.
> */
> - err = vb2_core_qbuf(vb->vb2_queue, vb->index, NULL, NULL);
> + err = vb2_core_qbuf(vb->vb2_queue, vb, NULL, NULL);
> WARN_ON_ONCE(err && err != -EIO);
> mutex_unlock(vb->vb2_queue->lock);
> }
> @@ -1562,12 +1559,10 @@ unsigned int vb2_request_buffer_cnt(struct media_request *req)
> }
> EXPORT_SYMBOL_GPL(vb2_request_buffer_cnt);
>
> -int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb)
> +int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> {
> - struct vb2_buffer *vb;
> int ret;
>
> - vb = q->bufs[index];
> if (vb->state != VB2_BUF_STATE_DEQUEUED) {
> dprintk(q, 1, "invalid buffer state %s\n",
> vb2_state_name(vb->state));
> @@ -1654,10 +1649,9 @@ static int vb2_start_streaming(struct vb2_queue *q)
> return ret;
> }
>
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> +int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
> struct media_request *req)
> {
> - struct vb2_buffer *vb;
> enum vb2_buffer_state orig_state;
> int ret;
>
> @@ -1666,8 +1660,6 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> return -EIO;
> }
>
> - vb = q->bufs[index];
> -
> if (!req && vb->state != VB2_BUF_STATE_IN_REQUEST &&
> q->requires_requests) {
> dprintk(q, 1, "qbuf requires a request\n");
> @@ -2240,9 +2232,8 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
> }
>
> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> - unsigned int index, unsigned int plane, unsigned int flags)
> + struct vb2_buffer *vb, unsigned int plane, unsigned int flags)
> {
> - struct vb2_buffer *vb = NULL;
> struct vb2_plane *vb_plane;
> int ret;
> struct dma_buf *dbuf;
> @@ -2267,13 +2258,6 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> return -EINVAL;
> }
>
> - if (index >= q->num_buffers) {
> - dprintk(q, 1, "buffer index out of range\n");
> - return -EINVAL;
> - }
> -
> - vb = q->bufs[index];
> -
> if (plane >= vb->num_planes) {
> dprintk(q, 1, "buffer plane out of range\n");
> return -EINVAL;
> @@ -2292,20 +2276,20 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> flags & O_ACCMODE);
> if (IS_ERR_OR_NULL(dbuf)) {
> dprintk(q, 1, "failed to export buffer %d, plane %d\n",
> - index, plane);
> + vb->index, plane);
> return -EINVAL;
> }
>
> ret = dma_buf_fd(dbuf, flags & ~O_ACCMODE);
> if (ret < 0) {
> dprintk(q, 3, "buffer %d, plane %d failed to export (%d)\n",
> - index, plane, ret);
> + vb->index, plane, ret);
> dma_buf_put(dbuf);
> return ret;
> }
>
> dprintk(q, 3, "buffer %d, plane %d exported as %d descriptor\n",
> - index, plane, ret);
> + vb->index, plane, ret);
> *fd = ret;
>
> return 0;
> @@ -2710,7 +2694,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> * Queue all buffers.
> */
> for (i = 0; i < q->num_buffers; i++) {
> - ret = vb2_core_qbuf(q, i, NULL, NULL);
> + ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
> if (ret)
> goto err_reqbufs;
> fileio->bufs[i].queued = 1;
> @@ -2895,7 +2879,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
>
> if (copy_timestamp)
> b->timestamp = ktime_get_ns();
> - ret = vb2_core_qbuf(q, index, NULL, NULL);
> + ret = vb2_core_qbuf(q, b, NULL, NULL);
> dprintk(q, 5, "vb2_qbuf result: %d\n", ret);
> if (ret)
> return ret;
> @@ -2998,7 +2982,7 @@ static int vb2_thread(void *data)
> if (copy_timestamp)
> vb->timestamp = ktime_get_ns();
> if (!threadio->stop)
> - ret = vb2_core_qbuf(q, vb->index, NULL, NULL);
> + ret = vb2_core_qbuf(q, vb, NULL, NULL);
> call_void_qop(q, wait_prepare, q);
> if (ret || threadio->stop)
> break;
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index c7a54d82a55e..d19d82a75ac6 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -364,13 +364,12 @@ static void set_buffer_cache_hints(struct vb2_queue *q,
> }
>
> static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> - struct v4l2_buffer *b, bool is_prepare,
> - struct media_request **p_req)
> + struct vb2_buffer *vb, struct v4l2_buffer *b,
> + bool is_prepare, struct media_request **p_req)
> {
> const char *opname = is_prepare ? "prepare_buf" : "qbuf";
> struct media_request *req;
> struct vb2_v4l2_buffer *vbuf;
> - struct vb2_buffer *vb;
> int ret;
>
> if (b->type != q->type) {
> @@ -378,23 +377,11 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
> return -EINVAL;
> }
>
> - if (b->index >= q->num_buffers) {
> - dprintk(q, 1, "%s: buffer index out of range\n", opname);
> - return -EINVAL;
> - }
> -
> - if (q->bufs[b->index] == NULL) {
> - /* Should never happen */
> - dprintk(q, 1, "%s: buffer is NULL\n", opname);
> - return -EINVAL;
> - }
> -
> if (b->memory != q->memory) {
> dprintk(q, 1, "%s: invalid memory type\n", opname);
> return -EINVAL;
> }
>
> - vb = q->bufs[b->index];
> vbuf = to_vb2_v4l2_buffer(vb);
> ret = __verify_planes_array(vb, b);
> if (ret)
> @@ -667,7 +654,7 @@ int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b)
> vb = q->bufs[b->index];
> ret = __verify_planes_array(vb, b);
> if (!ret)
> - vb2_core_querybuf(q, b->index, b);
> + vb2_core_querybuf(q, vb, b);
> return ret;
> }
> EXPORT_SYMBOL(vb2_querybuf);
> @@ -723,6 +710,7 @@ EXPORT_SYMBOL_GPL(vb2_reqbufs);
> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> struct v4l2_buffer *b)
> {
> + struct vb2_buffer *vb;
> int ret;
>
> if (vb2_fileio_is_active(q)) {
> @@ -733,9 +721,15 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> if (b->flags & V4L2_BUF_FLAG_REQUEST_FD)
> return -EINVAL;
>
> - ret = vb2_queue_or_prepare_buf(q, mdev, b, true, NULL);
> + if (b->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[b->index];
>
> - return ret ? ret : vb2_core_prepare_buf(q, b->index, b);
> + ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, true, NULL);
> +
> + return ret ? ret : vb2_core_prepare_buf(q, vb, b);
> }
> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
>
> @@ -803,6 +797,7 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
> struct v4l2_buffer *b)
> {
> struct media_request *req = NULL;
> + struct vb2_buffer *vb;
> int ret;
>
> if (vb2_fileio_is_active(q)) {
> @@ -810,10 +805,16 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
> return -EBUSY;
> }
>
> - ret = vb2_queue_or_prepare_buf(q, mdev, b, false, &req);
> + if (b->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[b->index];
> +
> + ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, false, &req);
> if (ret)
> return ret;
> - ret = vb2_core_qbuf(q, b->index, b, req);
> + ret = vb2_core_qbuf(q, vb, b, req);
> if (req)
> media_request_put(req);
> return ret;
> @@ -873,7 +874,15 @@ EXPORT_SYMBOL_GPL(vb2_streamoff);
>
> int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
> {
> - return vb2_core_expbuf(q, &eb->fd, eb->type, eb->index,
> + struct vb2_buffer *vb;
> +
> + if (eb->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[eb->index];
> +
> + return vb2_core_expbuf(q, &eb->fd, eb->type, vb,
> eb->plane, eb->flags);
> }
> EXPORT_SYMBOL_GPL(vb2_expbuf);
> diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
> index 909df82fed33..b322ef179f05 100644
> --- a/drivers/media/dvb-core/dvb_vb2.c
> +++ b/drivers/media/dvb-core/dvb_vb2.c
> @@ -360,7 +360,7 @@ int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> return -EINVAL;
> }
> - vb2_core_querybuf(&ctx->vb_q, b->index, b);
> + vb2_core_querybuf(&ctx->vb_q, q->bufs[b->index], b);
> dprintk(3, "[%s] index=%d\n", ctx->name, b->index);
> return 0;
> }
> @@ -370,7 +370,7 @@ int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp)
> struct vb2_queue *q = &ctx->vb_q;
> int ret;
>
> - ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, exp->index,
> + ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, q->bufs[exp->index],
> 0, exp->flags);
> if (ret) {
> dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
> @@ -391,7 +391,7 @@ int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> return -EINVAL;
> }
> - ret = vb2_core_qbuf(&ctx->vb_q, b->index, b, NULL);
> + ret = vb2_core_qbuf(&ctx->vb_q, q->bufs[b->index], b, NULL);
> if (ret) {
> dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
> b->index, ret);
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index 4b6a9d2ea372..cd3ff1cd759d 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -747,7 +747,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
> /**
> * vb2_core_querybuf() - query video buffer information.
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
> * @pb: buffer struct passed from userspace.
> *
> * Videobuf2 core helper to implement VIDIOC_QUERYBUF() operation. It is called
> @@ -759,7 +759,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb);
> +void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>
> /**
> * vb2_core_reqbufs() - Initiate streaming.
> @@ -823,7 +823,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> * vb2_core_prepare_buf() - Pass ownership of a buffer from userspace
> * to the kernel.
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
> * @pb: buffer structure passed from userspace to
> * &v4l2_ioctl_ops->vidioc_prepare_buf handler in driver.
> *
> @@ -839,13 +839,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
> +int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>
> /**
> * vb2_core_qbuf() - Queue a buffer from userspace
> *
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer
> + * @vb: pointer to struct &vb2_buffer.
> * @pb: buffer structure passed from userspace to
> * v4l2_ioctl_ops->vidioc_qbuf handler in driver
> * @req: pointer to &struct media_request, may be NULL.
> @@ -867,7 +867,7 @@ int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> +int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
> struct media_request *req);
>
> /**
> @@ -931,7 +931,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
> * @fd: pointer to the file descriptor associated with DMABUF
> * (set by driver).
> * @type: buffer type.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
> * @plane: index of the plane to be exported, 0 for single plane queues
> * @flags: file flags for newly created file, as defined at
> * include/uapi/asm-generic/fcntl.h.
> @@ -945,7 +945,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
> * Return: returns zero on success; an error code otherwise.
> */
> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> - unsigned int index, unsigned int plane, unsigned int flags);
> + struct vb2_buffer *vb, unsigned int plane, unsigned int flags);
>
> /**
> * vb2_core_queue_init() - initialize a videobuf2 queue
> --
> 2.39.2
>
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 04/56] media: videobuf2: Use vb2_buffer instead of index
@ 2023-11-08 8:08 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-08 8:08 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Hi Benjamin,
On Tue, Oct 31, 2023 at 05:30:12PM +0100, Benjamin Gaignard wrote:
> Directly use vb2_buffer pointer instead of index inside queue array.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 40 +++++----------
> .../media/common/videobuf2/videobuf2-v4l2.c | 51 +++++++++++--------
> drivers/media/dvb-core/dvb_vb2.c | 6 +--
> include/media/videobuf2-core.h | 16 +++---
> 4 files changed, 53 insertions(+), 60 deletions(-)
>
I just wanted to say that I really love this patch. Going well in the
direction I wanted to push it to, but never had enough time to do it.
Thanks!
Best regards,
Tomasz
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 47dba2a20d73..968b7c0e7934 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -654,9 +654,9 @@ static bool __buffers_in_use(struct vb2_queue *q)
> return false;
> }
>
> -void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb)
> +void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> {
> - call_void_bufop(q, fill_user_buffer, q->bufs[index], pb);
> + call_void_bufop(q, fill_user_buffer, vb, pb);
> }
> EXPORT_SYMBOL_GPL(vb2_core_querybuf);
>
> @@ -1490,9 +1490,6 @@ static void vb2_req_unprepare(struct media_request_object *obj)
> WARN_ON(!vb->req_obj.req);
> }
>
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> - struct media_request *req);
> -
> static void vb2_req_queue(struct media_request_object *obj)
> {
> struct vb2_buffer *vb = container_of(obj, struct vb2_buffer, req_obj);
> @@ -1507,7 +1504,7 @@ static void vb2_req_queue(struct media_request_object *obj)
> * set. We just ignore that, and expect this will be caught the
> * next time vb2_req_prepare() is called.
> */
> - err = vb2_core_qbuf(vb->vb2_queue, vb->index, NULL, NULL);
> + err = vb2_core_qbuf(vb->vb2_queue, vb, NULL, NULL);
> WARN_ON_ONCE(err && err != -EIO);
> mutex_unlock(vb->vb2_queue->lock);
> }
> @@ -1562,12 +1559,10 @@ unsigned int vb2_request_buffer_cnt(struct media_request *req)
> }
> EXPORT_SYMBOL_GPL(vb2_request_buffer_cnt);
>
> -int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb)
> +int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> {
> - struct vb2_buffer *vb;
> int ret;
>
> - vb = q->bufs[index];
> if (vb->state != VB2_BUF_STATE_DEQUEUED) {
> dprintk(q, 1, "invalid buffer state %s\n",
> vb2_state_name(vb->state));
> @@ -1654,10 +1649,9 @@ static int vb2_start_streaming(struct vb2_queue *q)
> return ret;
> }
>
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> +int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
> struct media_request *req)
> {
> - struct vb2_buffer *vb;
> enum vb2_buffer_state orig_state;
> int ret;
>
> @@ -1666,8 +1660,6 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> return -EIO;
> }
>
> - vb = q->bufs[index];
> -
> if (!req && vb->state != VB2_BUF_STATE_IN_REQUEST &&
> q->requires_requests) {
> dprintk(q, 1, "qbuf requires a request\n");
> @@ -2240,9 +2232,8 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
> }
>
> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> - unsigned int index, unsigned int plane, unsigned int flags)
> + struct vb2_buffer *vb, unsigned int plane, unsigned int flags)
> {
> - struct vb2_buffer *vb = NULL;
> struct vb2_plane *vb_plane;
> int ret;
> struct dma_buf *dbuf;
> @@ -2267,13 +2258,6 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> return -EINVAL;
> }
>
> - if (index >= q->num_buffers) {
> - dprintk(q, 1, "buffer index out of range\n");
> - return -EINVAL;
> - }
> -
> - vb = q->bufs[index];
> -
> if (plane >= vb->num_planes) {
> dprintk(q, 1, "buffer plane out of range\n");
> return -EINVAL;
> @@ -2292,20 +2276,20 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> flags & O_ACCMODE);
> if (IS_ERR_OR_NULL(dbuf)) {
> dprintk(q, 1, "failed to export buffer %d, plane %d\n",
> - index, plane);
> + vb->index, plane);
> return -EINVAL;
> }
>
> ret = dma_buf_fd(dbuf, flags & ~O_ACCMODE);
> if (ret < 0) {
> dprintk(q, 3, "buffer %d, plane %d failed to export (%d)\n",
> - index, plane, ret);
> + vb->index, plane, ret);
> dma_buf_put(dbuf);
> return ret;
> }
>
> dprintk(q, 3, "buffer %d, plane %d exported as %d descriptor\n",
> - index, plane, ret);
> + vb->index, plane, ret);
> *fd = ret;
>
> return 0;
> @@ -2710,7 +2694,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> * Queue all buffers.
> */
> for (i = 0; i < q->num_buffers; i++) {
> - ret = vb2_core_qbuf(q, i, NULL, NULL);
> + ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
> if (ret)
> goto err_reqbufs;
> fileio->bufs[i].queued = 1;
> @@ -2895,7 +2879,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
>
> if (copy_timestamp)
> b->timestamp = ktime_get_ns();
> - ret = vb2_core_qbuf(q, index, NULL, NULL);
> + ret = vb2_core_qbuf(q, b, NULL, NULL);
> dprintk(q, 5, "vb2_qbuf result: %d\n", ret);
> if (ret)
> return ret;
> @@ -2998,7 +2982,7 @@ static int vb2_thread(void *data)
> if (copy_timestamp)
> vb->timestamp = ktime_get_ns();
> if (!threadio->stop)
> - ret = vb2_core_qbuf(q, vb->index, NULL, NULL);
> + ret = vb2_core_qbuf(q, vb, NULL, NULL);
> call_void_qop(q, wait_prepare, q);
> if (ret || threadio->stop)
> break;
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index c7a54d82a55e..d19d82a75ac6 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -364,13 +364,12 @@ static void set_buffer_cache_hints(struct vb2_queue *q,
> }
>
> static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> - struct v4l2_buffer *b, bool is_prepare,
> - struct media_request **p_req)
> + struct vb2_buffer *vb, struct v4l2_buffer *b,
> + bool is_prepare, struct media_request **p_req)
> {
> const char *opname = is_prepare ? "prepare_buf" : "qbuf";
> struct media_request *req;
> struct vb2_v4l2_buffer *vbuf;
> - struct vb2_buffer *vb;
> int ret;
>
> if (b->type != q->type) {
> @@ -378,23 +377,11 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
> return -EINVAL;
> }
>
> - if (b->index >= q->num_buffers) {
> - dprintk(q, 1, "%s: buffer index out of range\n", opname);
> - return -EINVAL;
> - }
> -
> - if (q->bufs[b->index] == NULL) {
> - /* Should never happen */
> - dprintk(q, 1, "%s: buffer is NULL\n", opname);
> - return -EINVAL;
> - }
> -
> if (b->memory != q->memory) {
> dprintk(q, 1, "%s: invalid memory type\n", opname);
> return -EINVAL;
> }
>
> - vb = q->bufs[b->index];
> vbuf = to_vb2_v4l2_buffer(vb);
> ret = __verify_planes_array(vb, b);
> if (ret)
> @@ -667,7 +654,7 @@ int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b)
> vb = q->bufs[b->index];
> ret = __verify_planes_array(vb, b);
> if (!ret)
> - vb2_core_querybuf(q, b->index, b);
> + vb2_core_querybuf(q, vb, b);
> return ret;
> }
> EXPORT_SYMBOL(vb2_querybuf);
> @@ -723,6 +710,7 @@ EXPORT_SYMBOL_GPL(vb2_reqbufs);
> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> struct v4l2_buffer *b)
> {
> + struct vb2_buffer *vb;
> int ret;
>
> if (vb2_fileio_is_active(q)) {
> @@ -733,9 +721,15 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> if (b->flags & V4L2_BUF_FLAG_REQUEST_FD)
> return -EINVAL;
>
> - ret = vb2_queue_or_prepare_buf(q, mdev, b, true, NULL);
> + if (b->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[b->index];
>
> - return ret ? ret : vb2_core_prepare_buf(q, b->index, b);
> + ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, true, NULL);
> +
> + return ret ? ret : vb2_core_prepare_buf(q, vb, b);
> }
> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
>
> @@ -803,6 +797,7 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
> struct v4l2_buffer *b)
> {
> struct media_request *req = NULL;
> + struct vb2_buffer *vb;
> int ret;
>
> if (vb2_fileio_is_active(q)) {
> @@ -810,10 +805,16 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
> return -EBUSY;
> }
>
> - ret = vb2_queue_or_prepare_buf(q, mdev, b, false, &req);
> + if (b->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[b->index];
> +
> + ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, false, &req);
> if (ret)
> return ret;
> - ret = vb2_core_qbuf(q, b->index, b, req);
> + ret = vb2_core_qbuf(q, vb, b, req);
> if (req)
> media_request_put(req);
> return ret;
> @@ -873,7 +874,15 @@ EXPORT_SYMBOL_GPL(vb2_streamoff);
>
> int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
> {
> - return vb2_core_expbuf(q, &eb->fd, eb->type, eb->index,
> + struct vb2_buffer *vb;
> +
> + if (eb->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[eb->index];
> +
> + return vb2_core_expbuf(q, &eb->fd, eb->type, vb,
> eb->plane, eb->flags);
> }
> EXPORT_SYMBOL_GPL(vb2_expbuf);
> diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
> index 909df82fed33..b322ef179f05 100644
> --- a/drivers/media/dvb-core/dvb_vb2.c
> +++ b/drivers/media/dvb-core/dvb_vb2.c
> @@ -360,7 +360,7 @@ int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> return -EINVAL;
> }
> - vb2_core_querybuf(&ctx->vb_q, b->index, b);
> + vb2_core_querybuf(&ctx->vb_q, q->bufs[b->index], b);
> dprintk(3, "[%s] index=%d\n", ctx->name, b->index);
> return 0;
> }
> @@ -370,7 +370,7 @@ int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp)
> struct vb2_queue *q = &ctx->vb_q;
> int ret;
>
> - ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, exp->index,
> + ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, q->bufs[exp->index],
> 0, exp->flags);
> if (ret) {
> dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
> @@ -391,7 +391,7 @@ int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> return -EINVAL;
> }
> - ret = vb2_core_qbuf(&ctx->vb_q, b->index, b, NULL);
> + ret = vb2_core_qbuf(&ctx->vb_q, q->bufs[b->index], b, NULL);
> if (ret) {
> dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
> b->index, ret);
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index 4b6a9d2ea372..cd3ff1cd759d 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -747,7 +747,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
> /**
> * vb2_core_querybuf() - query video buffer information.
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
> * @pb: buffer struct passed from userspace.
> *
> * Videobuf2 core helper to implement VIDIOC_QUERYBUF() operation. It is called
> @@ -759,7 +759,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb);
> +void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>
> /**
> * vb2_core_reqbufs() - Initiate streaming.
> @@ -823,7 +823,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> * vb2_core_prepare_buf() - Pass ownership of a buffer from userspace
> * to the kernel.
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
> * @pb: buffer structure passed from userspace to
> * &v4l2_ioctl_ops->vidioc_prepare_buf handler in driver.
> *
> @@ -839,13 +839,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
> +int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>
> /**
> * vb2_core_qbuf() - Queue a buffer from userspace
> *
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer
> + * @vb: pointer to struct &vb2_buffer.
> * @pb: buffer structure passed from userspace to
> * v4l2_ioctl_ops->vidioc_qbuf handler in driver
> * @req: pointer to &struct media_request, may be NULL.
> @@ -867,7 +867,7 @@ int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> +int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
> struct media_request *req);
>
> /**
> @@ -931,7 +931,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
> * @fd: pointer to the file descriptor associated with DMABUF
> * (set by driver).
> * @type: buffer type.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
> * @plane: index of the plane to be exported, 0 for single plane queues
> * @flags: file flags for newly created file, as defined at
> * include/uapi/asm-generic/fcntl.h.
> @@ -945,7 +945,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
> * Return: returns zero on success; an error code otherwise.
> */
> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> - unsigned int index, unsigned int plane, unsigned int flags);
> + struct vb2_buffer *vb, unsigned int plane, unsigned int flags);
>
> /**
> * vb2_core_queue_init() - initialize a videobuf2 queue
> --
> 2.39.2
>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 04/56] media: videobuf2: Use vb2_buffer instead of index
@ 2023-11-08 8:08 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-08 8:08 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Hi Benjamin,
On Tue, Oct 31, 2023 at 05:30:12PM +0100, Benjamin Gaignard wrote:
> Directly use vb2_buffer pointer instead of index inside queue array.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 40 +++++----------
> .../media/common/videobuf2/videobuf2-v4l2.c | 51 +++++++++++--------
> drivers/media/dvb-core/dvb_vb2.c | 6 +--
> include/media/videobuf2-core.h | 16 +++---
> 4 files changed, 53 insertions(+), 60 deletions(-)
>
I just wanted to say that I really love this patch. Going well in the
direction I wanted to push it to, but never had enough time to do it.
Thanks!
Best regards,
Tomasz
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 47dba2a20d73..968b7c0e7934 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -654,9 +654,9 @@ static bool __buffers_in_use(struct vb2_queue *q)
> return false;
> }
>
> -void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb)
> +void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> {
> - call_void_bufop(q, fill_user_buffer, q->bufs[index], pb);
> + call_void_bufop(q, fill_user_buffer, vb, pb);
> }
> EXPORT_SYMBOL_GPL(vb2_core_querybuf);
>
> @@ -1490,9 +1490,6 @@ static void vb2_req_unprepare(struct media_request_object *obj)
> WARN_ON(!vb->req_obj.req);
> }
>
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> - struct media_request *req);
> -
> static void vb2_req_queue(struct media_request_object *obj)
> {
> struct vb2_buffer *vb = container_of(obj, struct vb2_buffer, req_obj);
> @@ -1507,7 +1504,7 @@ static void vb2_req_queue(struct media_request_object *obj)
> * set. We just ignore that, and expect this will be caught the
> * next time vb2_req_prepare() is called.
> */
> - err = vb2_core_qbuf(vb->vb2_queue, vb->index, NULL, NULL);
> + err = vb2_core_qbuf(vb->vb2_queue, vb, NULL, NULL);
> WARN_ON_ONCE(err && err != -EIO);
> mutex_unlock(vb->vb2_queue->lock);
> }
> @@ -1562,12 +1559,10 @@ unsigned int vb2_request_buffer_cnt(struct media_request *req)
> }
> EXPORT_SYMBOL_GPL(vb2_request_buffer_cnt);
>
> -int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb)
> +int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> {
> - struct vb2_buffer *vb;
> int ret;
>
> - vb = q->bufs[index];
> if (vb->state != VB2_BUF_STATE_DEQUEUED) {
> dprintk(q, 1, "invalid buffer state %s\n",
> vb2_state_name(vb->state));
> @@ -1654,10 +1649,9 @@ static int vb2_start_streaming(struct vb2_queue *q)
> return ret;
> }
>
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> +int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
> struct media_request *req)
> {
> - struct vb2_buffer *vb;
> enum vb2_buffer_state orig_state;
> int ret;
>
> @@ -1666,8 +1660,6 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> return -EIO;
> }
>
> - vb = q->bufs[index];
> -
> if (!req && vb->state != VB2_BUF_STATE_IN_REQUEST &&
> q->requires_requests) {
> dprintk(q, 1, "qbuf requires a request\n");
> @@ -2240,9 +2232,8 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
> }
>
> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> - unsigned int index, unsigned int plane, unsigned int flags)
> + struct vb2_buffer *vb, unsigned int plane, unsigned int flags)
> {
> - struct vb2_buffer *vb = NULL;
> struct vb2_plane *vb_plane;
> int ret;
> struct dma_buf *dbuf;
> @@ -2267,13 +2258,6 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> return -EINVAL;
> }
>
> - if (index >= q->num_buffers) {
> - dprintk(q, 1, "buffer index out of range\n");
> - return -EINVAL;
> - }
> -
> - vb = q->bufs[index];
> -
> if (plane >= vb->num_planes) {
> dprintk(q, 1, "buffer plane out of range\n");
> return -EINVAL;
> @@ -2292,20 +2276,20 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> flags & O_ACCMODE);
> if (IS_ERR_OR_NULL(dbuf)) {
> dprintk(q, 1, "failed to export buffer %d, plane %d\n",
> - index, plane);
> + vb->index, plane);
> return -EINVAL;
> }
>
> ret = dma_buf_fd(dbuf, flags & ~O_ACCMODE);
> if (ret < 0) {
> dprintk(q, 3, "buffer %d, plane %d failed to export (%d)\n",
> - index, plane, ret);
> + vb->index, plane, ret);
> dma_buf_put(dbuf);
> return ret;
> }
>
> dprintk(q, 3, "buffer %d, plane %d exported as %d descriptor\n",
> - index, plane, ret);
> + vb->index, plane, ret);
> *fd = ret;
>
> return 0;
> @@ -2710,7 +2694,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> * Queue all buffers.
> */
> for (i = 0; i < q->num_buffers; i++) {
> - ret = vb2_core_qbuf(q, i, NULL, NULL);
> + ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
> if (ret)
> goto err_reqbufs;
> fileio->bufs[i].queued = 1;
> @@ -2895,7 +2879,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
>
> if (copy_timestamp)
> b->timestamp = ktime_get_ns();
> - ret = vb2_core_qbuf(q, index, NULL, NULL);
> + ret = vb2_core_qbuf(q, b, NULL, NULL);
> dprintk(q, 5, "vb2_qbuf result: %d\n", ret);
> if (ret)
> return ret;
> @@ -2998,7 +2982,7 @@ static int vb2_thread(void *data)
> if (copy_timestamp)
> vb->timestamp = ktime_get_ns();
> if (!threadio->stop)
> - ret = vb2_core_qbuf(q, vb->index, NULL, NULL);
> + ret = vb2_core_qbuf(q, vb, NULL, NULL);
> call_void_qop(q, wait_prepare, q);
> if (ret || threadio->stop)
> break;
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index c7a54d82a55e..d19d82a75ac6 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -364,13 +364,12 @@ static void set_buffer_cache_hints(struct vb2_queue *q,
> }
>
> static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> - struct v4l2_buffer *b, bool is_prepare,
> - struct media_request **p_req)
> + struct vb2_buffer *vb, struct v4l2_buffer *b,
> + bool is_prepare, struct media_request **p_req)
> {
> const char *opname = is_prepare ? "prepare_buf" : "qbuf";
> struct media_request *req;
> struct vb2_v4l2_buffer *vbuf;
> - struct vb2_buffer *vb;
> int ret;
>
> if (b->type != q->type) {
> @@ -378,23 +377,11 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
> return -EINVAL;
> }
>
> - if (b->index >= q->num_buffers) {
> - dprintk(q, 1, "%s: buffer index out of range\n", opname);
> - return -EINVAL;
> - }
> -
> - if (q->bufs[b->index] == NULL) {
> - /* Should never happen */
> - dprintk(q, 1, "%s: buffer is NULL\n", opname);
> - return -EINVAL;
> - }
> -
> if (b->memory != q->memory) {
> dprintk(q, 1, "%s: invalid memory type\n", opname);
> return -EINVAL;
> }
>
> - vb = q->bufs[b->index];
> vbuf = to_vb2_v4l2_buffer(vb);
> ret = __verify_planes_array(vb, b);
> if (ret)
> @@ -667,7 +654,7 @@ int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b)
> vb = q->bufs[b->index];
> ret = __verify_planes_array(vb, b);
> if (!ret)
> - vb2_core_querybuf(q, b->index, b);
> + vb2_core_querybuf(q, vb, b);
> return ret;
> }
> EXPORT_SYMBOL(vb2_querybuf);
> @@ -723,6 +710,7 @@ EXPORT_SYMBOL_GPL(vb2_reqbufs);
> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> struct v4l2_buffer *b)
> {
> + struct vb2_buffer *vb;
> int ret;
>
> if (vb2_fileio_is_active(q)) {
> @@ -733,9 +721,15 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> if (b->flags & V4L2_BUF_FLAG_REQUEST_FD)
> return -EINVAL;
>
> - ret = vb2_queue_or_prepare_buf(q, mdev, b, true, NULL);
> + if (b->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[b->index];
>
> - return ret ? ret : vb2_core_prepare_buf(q, b->index, b);
> + ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, true, NULL);
> +
> + return ret ? ret : vb2_core_prepare_buf(q, vb, b);
> }
> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
>
> @@ -803,6 +797,7 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
> struct v4l2_buffer *b)
> {
> struct media_request *req = NULL;
> + struct vb2_buffer *vb;
> int ret;
>
> if (vb2_fileio_is_active(q)) {
> @@ -810,10 +805,16 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
> return -EBUSY;
> }
>
> - ret = vb2_queue_or_prepare_buf(q, mdev, b, false, &req);
> + if (b->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[b->index];
> +
> + ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, false, &req);
> if (ret)
> return ret;
> - ret = vb2_core_qbuf(q, b->index, b, req);
> + ret = vb2_core_qbuf(q, vb, b, req);
> if (req)
> media_request_put(req);
> return ret;
> @@ -873,7 +874,15 @@ EXPORT_SYMBOL_GPL(vb2_streamoff);
>
> int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
> {
> - return vb2_core_expbuf(q, &eb->fd, eb->type, eb->index,
> + struct vb2_buffer *vb;
> +
> + if (eb->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[eb->index];
> +
> + return vb2_core_expbuf(q, &eb->fd, eb->type, vb,
> eb->plane, eb->flags);
> }
> EXPORT_SYMBOL_GPL(vb2_expbuf);
> diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
> index 909df82fed33..b322ef179f05 100644
> --- a/drivers/media/dvb-core/dvb_vb2.c
> +++ b/drivers/media/dvb-core/dvb_vb2.c
> @@ -360,7 +360,7 @@ int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> return -EINVAL;
> }
> - vb2_core_querybuf(&ctx->vb_q, b->index, b);
> + vb2_core_querybuf(&ctx->vb_q, q->bufs[b->index], b);
> dprintk(3, "[%s] index=%d\n", ctx->name, b->index);
> return 0;
> }
> @@ -370,7 +370,7 @@ int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp)
> struct vb2_queue *q = &ctx->vb_q;
> int ret;
>
> - ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, exp->index,
> + ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, q->bufs[exp->index],
> 0, exp->flags);
> if (ret) {
> dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
> @@ -391,7 +391,7 @@ int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> return -EINVAL;
> }
> - ret = vb2_core_qbuf(&ctx->vb_q, b->index, b, NULL);
> + ret = vb2_core_qbuf(&ctx->vb_q, q->bufs[b->index], b, NULL);
> if (ret) {
> dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
> b->index, ret);
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index 4b6a9d2ea372..cd3ff1cd759d 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -747,7 +747,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
> /**
> * vb2_core_querybuf() - query video buffer information.
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
> * @pb: buffer struct passed from userspace.
> *
> * Videobuf2 core helper to implement VIDIOC_QUERYBUF() operation. It is called
> @@ -759,7 +759,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb);
> +void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>
> /**
> * vb2_core_reqbufs() - Initiate streaming.
> @@ -823,7 +823,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> * vb2_core_prepare_buf() - Pass ownership of a buffer from userspace
> * to the kernel.
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
> * @pb: buffer structure passed from userspace to
> * &v4l2_ioctl_ops->vidioc_prepare_buf handler in driver.
> *
> @@ -839,13 +839,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
> +int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>
> /**
> * vb2_core_qbuf() - Queue a buffer from userspace
> *
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer
> + * @vb: pointer to struct &vb2_buffer.
> * @pb: buffer structure passed from userspace to
> * v4l2_ioctl_ops->vidioc_qbuf handler in driver
> * @req: pointer to &struct media_request, may be NULL.
> @@ -867,7 +867,7 @@ int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> +int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
> struct media_request *req);
>
> /**
> @@ -931,7 +931,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
> * @fd: pointer to the file descriptor associated with DMABUF
> * (set by driver).
> * @type: buffer type.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
> * @plane: index of the plane to be exported, 0 for single plane queues
> * @flags: file flags for newly created file, as defined at
> * include/uapi/asm-generic/fcntl.h.
> @@ -945,7 +945,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
> * Return: returns zero on success; an error code otherwise.
> */
> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> - unsigned int index, unsigned int plane, unsigned int flags);
> + struct vb2_buffer *vb, unsigned int plane, unsigned int flags);
>
> /**
> * vb2_core_queue_init() - initialize a videobuf2 queue
> --
> 2.39.2
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 05/56] media: videobuf2: Access vb2_queue bufs array through helper functions
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-08 8:50 ` Tomasz Figa
-1 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-08 8:50 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:30:13PM +0100, Benjamin Gaignard wrote:
> This patch adds 2 helpers functions to add and remove vb2 buffers
> from a queue. With these 2 and vb2_get_buffer(), bufs field of
> struct vb2_queue becomes like a private member of the structure.
>
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer in preparation for when buffers can be deleted.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 151 +++++++++++++-----
> .../media/common/videobuf2/videobuf2-v4l2.c | 50 ++++--
> 2 files changed, 149 insertions(+), 52 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 968b7c0e7934..b406a30a9b35 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -408,6 +408,31 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
> vb->skip_cache_sync_on_finish = 1;
> }
>
> +/**
> + * vb2_queue_add_buffer() - add a buffer to a queue
> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> + * @vb: pointer to &struct vb2_buffer to be added to the queue.
> + * @index: index where add vb2_buffer in the queue
> + */
> +static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
> +{
> + WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
nit: Would it make sense to also ensure that vb->vb2_queue is NULL?
> +
> + q->bufs[index] = vb;
> + vb->index = index;
> + vb->vb2_queue = q;
> +}
[snip]
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index d19d82a75ac6..2ffb097bf00a 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -377,6 +377,12 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
> return -EINVAL;
> }
>
> + vb = vb2_get_buffer(q, b->index);
> + if (!vb) {
> + dprintk(q, 1, "%s: buffer %u is NULL\n", opname, b->index);
> + return -EINVAL;
> + }
> +
Is this a leftover from earlier revisions? I think it shouldn't be
needed anymore after the previous patch which changed the function to
get vb as an argument.
Best regards,
Tomasz
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 05/56] media: videobuf2: Access vb2_queue bufs array through helper functions
@ 2023-11-08 8:50 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-08 8:50 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:30:13PM +0100, Benjamin Gaignard wrote:
> This patch adds 2 helpers functions to add and remove vb2 buffers
> from a queue. With these 2 and vb2_get_buffer(), bufs field of
> struct vb2_queue becomes like a private member of the structure.
>
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer in preparation for when buffers can be deleted.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 151 +++++++++++++-----
> .../media/common/videobuf2/videobuf2-v4l2.c | 50 ++++--
> 2 files changed, 149 insertions(+), 52 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 968b7c0e7934..b406a30a9b35 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -408,6 +408,31 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
> vb->skip_cache_sync_on_finish = 1;
> }
>
> +/**
> + * vb2_queue_add_buffer() - add a buffer to a queue
> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> + * @vb: pointer to &struct vb2_buffer to be added to the queue.
> + * @index: index where add vb2_buffer in the queue
> + */
> +static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
> +{
> + WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
nit: Would it make sense to also ensure that vb->vb2_queue is NULL?
> +
> + q->bufs[index] = vb;
> + vb->index = index;
> + vb->vb2_queue = q;
> +}
[snip]
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index d19d82a75ac6..2ffb097bf00a 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -377,6 +377,12 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
> return -EINVAL;
> }
>
> + vb = vb2_get_buffer(q, b->index);
> + if (!vb) {
> + dprintk(q, 1, "%s: buffer %u is NULL\n", opname, b->index);
> + return -EINVAL;
> + }
> +
Is this a leftover from earlier revisions? I think it shouldn't be
needed anymore after the previous patch which changed the function to
get vb as an argument.
Best regards,
Tomasz
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 05/56] media: videobuf2: Access vb2_queue bufs array through helper functions
@ 2023-11-08 8:50 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-08 8:50 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:30:13PM +0100, Benjamin Gaignard wrote:
> This patch adds 2 helpers functions to add and remove vb2 buffers
> from a queue. With these 2 and vb2_get_buffer(), bufs field of
> struct vb2_queue becomes like a private member of the structure.
>
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer in preparation for when buffers can be deleted.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 151 +++++++++++++-----
> .../media/common/videobuf2/videobuf2-v4l2.c | 50 ++++--
> 2 files changed, 149 insertions(+), 52 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 968b7c0e7934..b406a30a9b35 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -408,6 +408,31 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
> vb->skip_cache_sync_on_finish = 1;
> }
>
> +/**
> + * vb2_queue_add_buffer() - add a buffer to a queue
> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> + * @vb: pointer to &struct vb2_buffer to be added to the queue.
> + * @index: index where add vb2_buffer in the queue
> + */
> +static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
> +{
> + WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
nit: Would it make sense to also ensure that vb->vb2_queue is NULL?
> +
> + q->bufs[index] = vb;
> + vb->index = index;
> + vb->vb2_queue = q;
> +}
[snip]
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index d19d82a75ac6..2ffb097bf00a 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -377,6 +377,12 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
> return -EINVAL;
> }
>
> + vb = vb2_get_buffer(q, b->index);
> + if (!vb) {
> + dprintk(q, 1, "%s: buffer %u is NULL\n", opname, b->index);
> + return -EINVAL;
> + }
> +
Is this a leftover from earlier revisions? I think it shouldn't be
needed anymore after the previous patch which changed the function to
get vb as an argument.
Best regards,
Tomasz
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 08/56] media: videobuf2: Use vb2_get_num_buffers() helper
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-08 9:42 ` Tomasz Figa
-1 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-08 9:42 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:30:16PM +0100, Benjamin Gaignard wrote:
> Stop using queue num_buffers field directly, instead use
> vb2_get_num_buffers().
> This prepares for the future 'delete buffers' feature where there are
> holes in the buffer indices.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 92 +++++++++++--------
> .../media/common/videobuf2/videobuf2-v4l2.c | 4 +-
> 2 files changed, 54 insertions(+), 42 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index b406a30a9b35..c5c5ae4d213d 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -444,13 +444,14 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> unsigned int num_buffers, unsigned int num_planes,
> const unsigned plane_sizes[VB2_MAX_PLANES])
> {
> + unsigned int q_num_buffers = vb2_get_num_buffers(q);
> unsigned int buffer, plane;
> struct vb2_buffer *vb;
> int ret;
>
> /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
> num_buffers = min_t(unsigned int, num_buffers,
> - VB2_MAX_FRAME - q->num_buffers);
> + VB2_MAX_FRAME - q_num_buffers);
I guess it's safe in this specific situation, but was there any reason
behind not just calling vb2_get_num_buffers() directly here?
>
> for (buffer = 0; buffer < num_buffers; ++buffer) {
> /* Allocate vb2 buffer structures */
> @@ -470,7 +471,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> vb->planes[plane].min_length = plane_sizes[plane];
> }
>
> - vb2_queue_add_buffer(q, vb, q->num_buffers + buffer);
> + vb2_queue_add_buffer(q, vb, q_num_buffers + buffer);
In this case it should also be fine, but actually now this is a loop and if
somone doesn't know what the other code in the loop does, one could be
concerned that the num buffers actually could have changed, but we still
use the cached one that we got at the beginning of the function.
(Ideally I'd imagine vb2_queue_add_buffer() to append the buffer
at the end of the queue and increment the num_buffers internally, but it
doesn't have to happen now, as this series is already quite complex...)
> call_void_bufop(q, init_buffer, vb);
>
> /* Allocate video buffer memory for the MMAP type */
[snip]
> @@ -2513,7 +2519,8 @@ void vb2_core_queue_release(struct vb2_queue *q)
> __vb2_cleanup_fileio(q);
> __vb2_queue_cancel(q);
> mutex_lock(&q->mmap_lock);
> - __vb2_queue_free(q, q->num_buffers);
> + __vb2_queue_free(q, vb2_get_num_buffers(q));
> + q->num_buffers = 0;
Unrelated change?
> mutex_unlock(&q->mmap_lock);
> }
> EXPORT_SYMBOL_GPL(vb2_core_queue_release);
> @@ -2542,7 +2549,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
> /*
> * Start file I/O emulator only if streaming API has not been used yet.
> */
> - if (q->num_buffers == 0 && !vb2_fileio_is_active(q)) {
> + if (vb2_get_num_buffers(q) == 0 && !vb2_fileio_is_active(q)) {
> if (!q->is_output && (q->io_modes & VB2_READ) &&
> (req_events & (EPOLLIN | EPOLLRDNORM))) {
> if (__vb2_init_fileio(q, 1))
> @@ -2580,7 +2587,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
> * For output streams you can call write() as long as there are fewer
> * buffers queued than there are buffers available.
> */
> - if (q->is_output && q->fileio && q->queued_count < q->num_buffers)
> + if (q->is_output && q->fileio && q->queued_count < vb2_get_num_buffers(q))
> return EPOLLOUT | EPOLLWRNORM;
>
> if (list_empty(&q->done_list)) {
> @@ -2629,8 +2636,8 @@ struct vb2_fileio_buf {
> * struct vb2_fileio_data - queue context used by file io emulator
> *
> * @cur_index: the index of the buffer currently being read from or
> - * written to. If equal to q->num_buffers then a new buffer
> - * must be dequeued.
> + * written to. If equal to number of already queued buffers
> + * then a new buffer must be dequeued.
Hmm, that's a significant meaning change compared to the original text. Is
it indended?
> * @initial_index: in the read() case all buffers are queued up immediately
> * in __vb2_init_fileio() and __vb2_perform_fileio() just cycles
> * buffers. However, in the write() case no buffers are initially
> @@ -2640,7 +2647,7 @@ struct vb2_fileio_buf {
> * buffers. This means that initially __vb2_perform_fileio()
> * needs to know what buffer index to use when it is queuing up
> * the buffers for the first time. That initial index is stored
> - * in this field. Once it is equal to q->num_buffers all
> + * in this field. Once it is equal to num_buffers all
It's not clear what num_buffers means here. Would it make sense to instead
say "number of buffers in the vb2_queue"?
> * available buffers have been queued and __vb2_perform_fileio()
> * should start the normal dequeue/queue cycle.
> *
> @@ -2690,7 +2697,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> /*
> * Check if streaming api has not been already activated.
> */
> - if (q->streaming || q->num_buffers > 0)
> + if (q->streaming || vb2_get_num_buffers(q) > 0)
> return -EBUSY;
>
> /*
> @@ -2740,7 +2747,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> /*
> * Get kernel address of each buffer.
> */
> - for (i = 0; i < q->num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
> /* vb can never be NULL when using fileio. */
> vb = vb2_get_buffer(q, i);
>
> @@ -2759,18 +2766,23 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> /*
> * Queue all buffers.
> */
> - for (i = 0; i < q->num_buffers; i++) {
> - ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
> + struct vb2_buffer *vb2 = vb2_get_buffer(q, i);
> +
> + if (!vb2)
> + continue;
> +
> + ret = vb2_core_qbuf(q, vb2, NULL, NULL);
> if (ret)
> goto err_reqbufs;
> fileio->bufs[i].queued = 1;
> }
Doesn't this part belong to the previous patch that changes q->bufs[x] to
vb2_get_buffer()?
> /*
> * All buffers have been queued, so mark that by setting
> - * initial_index to q->num_buffers
> + * initial_index to num_buffers
What num_buffers?
> */
> - fileio->initial_index = q->num_buffers;
> - fileio->cur_index = q->num_buffers;
> + fileio->initial_index = vb2_get_num_buffers(q);
> + fileio->cur_index = fileio->initial_index;
> }
>
> /*
> @@ -2964,12 +2976,12 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
> * If we are queuing up buffers for the first time, then
> * increase initial_index by one.
> */
> - if (fileio->initial_index < q->num_buffers)
> + if (fileio->initial_index < vb2_get_num_buffers(q))
> fileio->initial_index++;
> /*
> * The next buffer to use is either a buffer that's going to be
> - * queued for the first time (initial_index < q->num_buffers)
> - * or it is equal to q->num_buffers, meaning that the next
> + * queued for the first time (initial_index < num_buffers)
> + * or it is equal to num_buffers, meaning that the next
What num_buffers?
Best regards,
Tomasz
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 08/56] media: videobuf2: Use vb2_get_num_buffers() helper
@ 2023-11-08 9:42 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-08 9:42 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:30:16PM +0100, Benjamin Gaignard wrote:
> Stop using queue num_buffers field directly, instead use
> vb2_get_num_buffers().
> This prepares for the future 'delete buffers' feature where there are
> holes in the buffer indices.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 92 +++++++++++--------
> .../media/common/videobuf2/videobuf2-v4l2.c | 4 +-
> 2 files changed, 54 insertions(+), 42 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index b406a30a9b35..c5c5ae4d213d 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -444,13 +444,14 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> unsigned int num_buffers, unsigned int num_planes,
> const unsigned plane_sizes[VB2_MAX_PLANES])
> {
> + unsigned int q_num_buffers = vb2_get_num_buffers(q);
> unsigned int buffer, plane;
> struct vb2_buffer *vb;
> int ret;
>
> /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
> num_buffers = min_t(unsigned int, num_buffers,
> - VB2_MAX_FRAME - q->num_buffers);
> + VB2_MAX_FRAME - q_num_buffers);
I guess it's safe in this specific situation, but was there any reason
behind not just calling vb2_get_num_buffers() directly here?
>
> for (buffer = 0; buffer < num_buffers; ++buffer) {
> /* Allocate vb2 buffer structures */
> @@ -470,7 +471,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> vb->planes[plane].min_length = plane_sizes[plane];
> }
>
> - vb2_queue_add_buffer(q, vb, q->num_buffers + buffer);
> + vb2_queue_add_buffer(q, vb, q_num_buffers + buffer);
In this case it should also be fine, but actually now this is a loop and if
somone doesn't know what the other code in the loop does, one could be
concerned that the num buffers actually could have changed, but we still
use the cached one that we got at the beginning of the function.
(Ideally I'd imagine vb2_queue_add_buffer() to append the buffer
at the end of the queue and increment the num_buffers internally, but it
doesn't have to happen now, as this series is already quite complex...)
> call_void_bufop(q, init_buffer, vb);
>
> /* Allocate video buffer memory for the MMAP type */
[snip]
> @@ -2513,7 +2519,8 @@ void vb2_core_queue_release(struct vb2_queue *q)
> __vb2_cleanup_fileio(q);
> __vb2_queue_cancel(q);
> mutex_lock(&q->mmap_lock);
> - __vb2_queue_free(q, q->num_buffers);
> + __vb2_queue_free(q, vb2_get_num_buffers(q));
> + q->num_buffers = 0;
Unrelated change?
> mutex_unlock(&q->mmap_lock);
> }
> EXPORT_SYMBOL_GPL(vb2_core_queue_release);
> @@ -2542,7 +2549,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
> /*
> * Start file I/O emulator only if streaming API has not been used yet.
> */
> - if (q->num_buffers == 0 && !vb2_fileio_is_active(q)) {
> + if (vb2_get_num_buffers(q) == 0 && !vb2_fileio_is_active(q)) {
> if (!q->is_output && (q->io_modes & VB2_READ) &&
> (req_events & (EPOLLIN | EPOLLRDNORM))) {
> if (__vb2_init_fileio(q, 1))
> @@ -2580,7 +2587,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
> * For output streams you can call write() as long as there are fewer
> * buffers queued than there are buffers available.
> */
> - if (q->is_output && q->fileio && q->queued_count < q->num_buffers)
> + if (q->is_output && q->fileio && q->queued_count < vb2_get_num_buffers(q))
> return EPOLLOUT | EPOLLWRNORM;
>
> if (list_empty(&q->done_list)) {
> @@ -2629,8 +2636,8 @@ struct vb2_fileio_buf {
> * struct vb2_fileio_data - queue context used by file io emulator
> *
> * @cur_index: the index of the buffer currently being read from or
> - * written to. If equal to q->num_buffers then a new buffer
> - * must be dequeued.
> + * written to. If equal to number of already queued buffers
> + * then a new buffer must be dequeued.
Hmm, that's a significant meaning change compared to the original text. Is
it indended?
> * @initial_index: in the read() case all buffers are queued up immediately
> * in __vb2_init_fileio() and __vb2_perform_fileio() just cycles
> * buffers. However, in the write() case no buffers are initially
> @@ -2640,7 +2647,7 @@ struct vb2_fileio_buf {
> * buffers. This means that initially __vb2_perform_fileio()
> * needs to know what buffer index to use when it is queuing up
> * the buffers for the first time. That initial index is stored
> - * in this field. Once it is equal to q->num_buffers all
> + * in this field. Once it is equal to num_buffers all
It's not clear what num_buffers means here. Would it make sense to instead
say "number of buffers in the vb2_queue"?
> * available buffers have been queued and __vb2_perform_fileio()
> * should start the normal dequeue/queue cycle.
> *
> @@ -2690,7 +2697,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> /*
> * Check if streaming api has not been already activated.
> */
> - if (q->streaming || q->num_buffers > 0)
> + if (q->streaming || vb2_get_num_buffers(q) > 0)
> return -EBUSY;
>
> /*
> @@ -2740,7 +2747,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> /*
> * Get kernel address of each buffer.
> */
> - for (i = 0; i < q->num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
> /* vb can never be NULL when using fileio. */
> vb = vb2_get_buffer(q, i);
>
> @@ -2759,18 +2766,23 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> /*
> * Queue all buffers.
> */
> - for (i = 0; i < q->num_buffers; i++) {
> - ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
> + struct vb2_buffer *vb2 = vb2_get_buffer(q, i);
> +
> + if (!vb2)
> + continue;
> +
> + ret = vb2_core_qbuf(q, vb2, NULL, NULL);
> if (ret)
> goto err_reqbufs;
> fileio->bufs[i].queued = 1;
> }
Doesn't this part belong to the previous patch that changes q->bufs[x] to
vb2_get_buffer()?
> /*
> * All buffers have been queued, so mark that by setting
> - * initial_index to q->num_buffers
> + * initial_index to num_buffers
What num_buffers?
> */
> - fileio->initial_index = q->num_buffers;
> - fileio->cur_index = q->num_buffers;
> + fileio->initial_index = vb2_get_num_buffers(q);
> + fileio->cur_index = fileio->initial_index;
> }
>
> /*
> @@ -2964,12 +2976,12 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
> * If we are queuing up buffers for the first time, then
> * increase initial_index by one.
> */
> - if (fileio->initial_index < q->num_buffers)
> + if (fileio->initial_index < vb2_get_num_buffers(q))
> fileio->initial_index++;
> /*
> * The next buffer to use is either a buffer that's going to be
> - * queued for the first time (initial_index < q->num_buffers)
> - * or it is equal to q->num_buffers, meaning that the next
> + * queued for the first time (initial_index < num_buffers)
> + * or it is equal to num_buffers, meaning that the next
What num_buffers?
Best regards,
Tomasz
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 08/56] media: videobuf2: Use vb2_get_num_buffers() helper
@ 2023-11-08 9:42 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-08 9:42 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:30:16PM +0100, Benjamin Gaignard wrote:
> Stop using queue num_buffers field directly, instead use
> vb2_get_num_buffers().
> This prepares for the future 'delete buffers' feature where there are
> holes in the buffer indices.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 92 +++++++++++--------
> .../media/common/videobuf2/videobuf2-v4l2.c | 4 +-
> 2 files changed, 54 insertions(+), 42 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index b406a30a9b35..c5c5ae4d213d 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -444,13 +444,14 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> unsigned int num_buffers, unsigned int num_planes,
> const unsigned plane_sizes[VB2_MAX_PLANES])
> {
> + unsigned int q_num_buffers = vb2_get_num_buffers(q);
> unsigned int buffer, plane;
> struct vb2_buffer *vb;
> int ret;
>
> /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
> num_buffers = min_t(unsigned int, num_buffers,
> - VB2_MAX_FRAME - q->num_buffers);
> + VB2_MAX_FRAME - q_num_buffers);
I guess it's safe in this specific situation, but was there any reason
behind not just calling vb2_get_num_buffers() directly here?
>
> for (buffer = 0; buffer < num_buffers; ++buffer) {
> /* Allocate vb2 buffer structures */
> @@ -470,7 +471,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> vb->planes[plane].min_length = plane_sizes[plane];
> }
>
> - vb2_queue_add_buffer(q, vb, q->num_buffers + buffer);
> + vb2_queue_add_buffer(q, vb, q_num_buffers + buffer);
In this case it should also be fine, but actually now this is a loop and if
somone doesn't know what the other code in the loop does, one could be
concerned that the num buffers actually could have changed, but we still
use the cached one that we got at the beginning of the function.
(Ideally I'd imagine vb2_queue_add_buffer() to append the buffer
at the end of the queue and increment the num_buffers internally, but it
doesn't have to happen now, as this series is already quite complex...)
> call_void_bufop(q, init_buffer, vb);
>
> /* Allocate video buffer memory for the MMAP type */
[snip]
> @@ -2513,7 +2519,8 @@ void vb2_core_queue_release(struct vb2_queue *q)
> __vb2_cleanup_fileio(q);
> __vb2_queue_cancel(q);
> mutex_lock(&q->mmap_lock);
> - __vb2_queue_free(q, q->num_buffers);
> + __vb2_queue_free(q, vb2_get_num_buffers(q));
> + q->num_buffers = 0;
Unrelated change?
> mutex_unlock(&q->mmap_lock);
> }
> EXPORT_SYMBOL_GPL(vb2_core_queue_release);
> @@ -2542,7 +2549,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
> /*
> * Start file I/O emulator only if streaming API has not been used yet.
> */
> - if (q->num_buffers == 0 && !vb2_fileio_is_active(q)) {
> + if (vb2_get_num_buffers(q) == 0 && !vb2_fileio_is_active(q)) {
> if (!q->is_output && (q->io_modes & VB2_READ) &&
> (req_events & (EPOLLIN | EPOLLRDNORM))) {
> if (__vb2_init_fileio(q, 1))
> @@ -2580,7 +2587,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
> * For output streams you can call write() as long as there are fewer
> * buffers queued than there are buffers available.
> */
> - if (q->is_output && q->fileio && q->queued_count < q->num_buffers)
> + if (q->is_output && q->fileio && q->queued_count < vb2_get_num_buffers(q))
> return EPOLLOUT | EPOLLWRNORM;
>
> if (list_empty(&q->done_list)) {
> @@ -2629,8 +2636,8 @@ struct vb2_fileio_buf {
> * struct vb2_fileio_data - queue context used by file io emulator
> *
> * @cur_index: the index of the buffer currently being read from or
> - * written to. If equal to q->num_buffers then a new buffer
> - * must be dequeued.
> + * written to. If equal to number of already queued buffers
> + * then a new buffer must be dequeued.
Hmm, that's a significant meaning change compared to the original text. Is
it indended?
> * @initial_index: in the read() case all buffers are queued up immediately
> * in __vb2_init_fileio() and __vb2_perform_fileio() just cycles
> * buffers. However, in the write() case no buffers are initially
> @@ -2640,7 +2647,7 @@ struct vb2_fileio_buf {
> * buffers. This means that initially __vb2_perform_fileio()
> * needs to know what buffer index to use when it is queuing up
> * the buffers for the first time. That initial index is stored
> - * in this field. Once it is equal to q->num_buffers all
> + * in this field. Once it is equal to num_buffers all
It's not clear what num_buffers means here. Would it make sense to instead
say "number of buffers in the vb2_queue"?
> * available buffers have been queued and __vb2_perform_fileio()
> * should start the normal dequeue/queue cycle.
> *
> @@ -2690,7 +2697,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> /*
> * Check if streaming api has not been already activated.
> */
> - if (q->streaming || q->num_buffers > 0)
> + if (q->streaming || vb2_get_num_buffers(q) > 0)
> return -EBUSY;
>
> /*
> @@ -2740,7 +2747,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> /*
> * Get kernel address of each buffer.
> */
> - for (i = 0; i < q->num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
> /* vb can never be NULL when using fileio. */
> vb = vb2_get_buffer(q, i);
>
> @@ -2759,18 +2766,23 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> /*
> * Queue all buffers.
> */
> - for (i = 0; i < q->num_buffers; i++) {
> - ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
> + struct vb2_buffer *vb2 = vb2_get_buffer(q, i);
> +
> + if (!vb2)
> + continue;
> +
> + ret = vb2_core_qbuf(q, vb2, NULL, NULL);
> if (ret)
> goto err_reqbufs;
> fileio->bufs[i].queued = 1;
> }
Doesn't this part belong to the previous patch that changes q->bufs[x] to
vb2_get_buffer()?
> /*
> * All buffers have been queued, so mark that by setting
> - * initial_index to q->num_buffers
> + * initial_index to num_buffers
What num_buffers?
> */
> - fileio->initial_index = q->num_buffers;
> - fileio->cur_index = q->num_buffers;
> + fileio->initial_index = vb2_get_num_buffers(q);
> + fileio->cur_index = fileio->initial_index;
> }
>
> /*
> @@ -2964,12 +2976,12 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
> * If we are queuing up buffers for the first time, then
> * increase initial_index by one.
> */
> - if (fileio->initial_index < q->num_buffers)
> + if (fileio->initial_index < vb2_get_num_buffers(q))
> fileio->initial_index++;
> /*
> * The next buffer to use is either a buffer that's going to be
> - * queued for the first time (initial_index < q->num_buffers)
> - * or it is equal to q->num_buffers, meaning that the next
> + * queued for the first time (initial_index < num_buffers)
> + * or it is equal to num_buffers, meaning that the next
What num_buffers?
Best regards,
Tomasz
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 02/56] media: videobuf2: Rework offset 'cookie' encoding pattern
2023-11-08 6:23 ` Tomasz Figa
(?)
@ 2023-11-08 10:14 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-08 10:14 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 08/11/2023 à 07:23, Tomasz Figa a écrit :
> Hi Benjamin,
>
> On Tue, Oct 31, 2023 at 05:30:10PM +0100, Benjamin Gaignard wrote:
>> Change how offset 'cookie' field value is computed to make possible
>> to use more buffers.
>> The maximum number of buffers depends of PAGE_SHIFT value and can
>> go up to 0x7fff when PAGE_SHIFT = 12.
>> With this encoding pattern we know the maximum number that a queue
>> could store so we can check it at queue init time.
>> It also make easier and faster to find buffer and plane from using
>> the offset field.
>> Change __find_plane_by_offset() prototype to return the video buffer
>> itself rather than it index.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> .../media/common/videobuf2/videobuf2-core.c | 73 +++++++++----------
>> 1 file changed, 35 insertions(+), 38 deletions(-)
>>
> Thanks a lot for working on this series. Just one comment inline.
>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index a5e57affeb30..09be8e026044 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -31,6 +31,11 @@
>>
>> #include <trace/events/vb2.h>
>>
>> +#define PLANE_INDEX_SHIFT (PAGE_SHIFT + 3)
>> +#define PLANE_INDEX_MASK 0x7
> Could we somehow ensure that it indeed matches VIDEO_MAX_PLANES?
>
> One thing that comes to my mind would be
>
> #define PLANE_INDEX_BITS 3
> #define PLANE_INDEX_SHIFT (PAGE_SHIFT + PLANE_INDEX_BITS)
> #define PLANE_INDEX_MASK BIT_MASK(PLANE_INDEX_BITS)
>
> BUILD_BUG_ON(BIT(PLANE_INDEX_BITS) != VIDEO_MAX_PLANES);
>
> Alternatively we could change the videodev2.h, so that we have
>
> #define VIDEO_MAX_PLANES_BITS 3
> #define VIDEO_MAX_PLANES (1U < VIDEO_MAX_PLANES_BITS)
>
> and then we can just VIDEO_MAX_PLANES_BITS in our definitions in this file
> and no checks would be necessary.
I would prefer this solution.
Hans should I do that in an other patch ?
Regards,
Benjamin
>
> Best regards,
> Tomasz
>
>> +#define MAX_BUFFER_INDEX BIT_MASK(30 - PLANE_INDEX_SHIFT)
>> +#define BUFFER_INDEX_MASK (MAX_BUFFER_INDEX - 1)
>> +
>> static int debug;
>> module_param(debug, int, 0644);
>>
>> @@ -358,21 +363,27 @@ static void __setup_offsets(struct vb2_buffer *vb)
>> unsigned int plane;
>> unsigned long offset = 0;
>>
>> - if (vb->index) {
>> - struct vb2_buffer *prev = q->bufs[vb->index - 1];
>> - struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
>> -
>> - offset = PAGE_ALIGN(p->m.offset + p->length);
>> - }
>> + /*
>> + * The offset "cookie" value has the following constraints:
>> + * - a buffer can have up to 8 planes.
>> + * - v4l2 mem2mem uses bit 30 to distinguish between
>> + * OUTPUT (aka "source", bit 30 is 0) and
>> + * CAPTURE (aka "destination", bit 30 is 1) buffers.
>> + * - must be page aligned
>> + * That led to this bit mapping when PAGE_SHIFT = 12:
>> + * |30 |29 15|14 12|11 0|
>> + * |DST_QUEUE_OFF_BASE|buffer index|plane index| 0 |
>> + * where there are 15 bits to store the buffer index.
>> + * Depending on PAGE_SHIFT value we can have fewer bits
>> + * to store the buffer index.
>> + */
>> + offset = vb->index << PLANE_INDEX_SHIFT;
>>
>> for (plane = 0; plane < vb->num_planes; ++plane) {
>> - vb->planes[plane].m.offset = offset;
>> + vb->planes[plane].m.offset = offset + (plane << PAGE_SHIFT);
>>
>> dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
>> vb->index, plane, offset);
>> -
>> - offset += vb->planes[plane].length;
>> - offset = PAGE_ALIGN(offset);
>> }
>> }
>>
>> @@ -2188,10 +2199,9 @@ EXPORT_SYMBOL_GPL(vb2_core_streamoff);
>> * __find_plane_by_offset() - find plane associated with the given offset
>> */
>> static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
>> - unsigned int *_buffer, unsigned int *_plane)
>> + struct vb2_buffer **vb, unsigned int *plane)
>> {
>> - struct vb2_buffer *vb;
>> - unsigned int buffer, plane;
>> + unsigned int buffer;
>>
>> /*
>> * Sanity checks to ensure the lock is held, MEMORY_MMAP is
>> @@ -2209,24 +2219,15 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
>> return -EBUSY;
>> }
>>
>> - /*
>> - * Go over all buffers and their planes, comparing the given offset
>> - * with an offset assigned to each plane. If a match is found,
>> - * return its buffer and plane numbers.
>> - */
>> - for (buffer = 0; buffer < q->num_buffers; ++buffer) {
>> - vb = q->bufs[buffer];
>> + /* Get buffer and plane from the offset */
>> + buffer = (offset >> PLANE_INDEX_SHIFT) & BUFFER_INDEX_MASK;
>> + *plane = (offset >> PAGE_SHIFT) & PLANE_INDEX_MASK;
>>
>> - for (plane = 0; plane < vb->num_planes; ++plane) {
>> - if (vb->planes[plane].m.offset == offset) {
>> - *_buffer = buffer;
>> - *_plane = plane;
>> - return 0;
>> - }
>> - }
>> - }
>> + if (buffer >= q->num_buffers || *plane >= q->bufs[buffer]->num_planes)
>> + return -EINVAL;
>>
>> - return -EINVAL;
>> + *vb = q->bufs[buffer];
>> + return 0;
>> }
>>
>> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
>> @@ -2306,7 +2307,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>> {
>> unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
>> struct vb2_buffer *vb;
>> - unsigned int buffer = 0, plane = 0;
>> + unsigned int plane = 0;
>> int ret;
>> unsigned long length;
>>
>> @@ -2335,12 +2336,10 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>> * Find the plane corresponding to the offset passed by userspace. This
>> * will return an error if not MEMORY_MMAP or file I/O is in progress.
>> */
>> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
>> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
>> if (ret)
>> goto unlock;
>>
>> - vb = q->bufs[buffer];
>> -
>> /*
>> * MMAP requires page_aligned buffers.
>> * The buffer length was page_aligned at __vb2_buf_mem_alloc(),
>> @@ -2368,7 +2367,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>> if (ret)
>> return ret;
>>
>> - dprintk(q, 3, "buffer %d, plane %d successfully mapped\n", buffer, plane);
>> + dprintk(q, 3, "buffer %u, plane %d successfully mapped\n", vb->index, plane);
>> return 0;
>> }
>> EXPORT_SYMBOL_GPL(vb2_mmap);
>> @@ -2382,7 +2381,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
>> {
>> unsigned long offset = pgoff << PAGE_SHIFT;
>> struct vb2_buffer *vb;
>> - unsigned int buffer, plane;
>> + unsigned int plane;
>> void *vaddr;
>> int ret;
>>
>> @@ -2392,12 +2391,10 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
>> * Find the plane corresponding to the offset passed by userspace. This
>> * will return an error if not MEMORY_MMAP or file I/O is in progress.
>> */
>> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
>> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
>> if (ret)
>> goto unlock;
>>
>> - vb = q->bufs[buffer];
>> -
>> vaddr = vb2_plane_vaddr(vb, plane);
>> mutex_unlock(&q->mmap_lock);
>> return vaddr ? (unsigned long)vaddr : -EINVAL;
>> --
>> 2.39.2
>>
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 02/56] media: videobuf2: Rework offset 'cookie' encoding pattern
@ 2023-11-08 10:14 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-08 10:14 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 08/11/2023 à 07:23, Tomasz Figa a écrit :
> Hi Benjamin,
>
> On Tue, Oct 31, 2023 at 05:30:10PM +0100, Benjamin Gaignard wrote:
>> Change how offset 'cookie' field value is computed to make possible
>> to use more buffers.
>> The maximum number of buffers depends of PAGE_SHIFT value and can
>> go up to 0x7fff when PAGE_SHIFT = 12.
>> With this encoding pattern we know the maximum number that a queue
>> could store so we can check it at queue init time.
>> It also make easier and faster to find buffer and plane from using
>> the offset field.
>> Change __find_plane_by_offset() prototype to return the video buffer
>> itself rather than it index.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> .../media/common/videobuf2/videobuf2-core.c | 73 +++++++++----------
>> 1 file changed, 35 insertions(+), 38 deletions(-)
>>
> Thanks a lot for working on this series. Just one comment inline.
>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index a5e57affeb30..09be8e026044 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -31,6 +31,11 @@
>>
>> #include <trace/events/vb2.h>
>>
>> +#define PLANE_INDEX_SHIFT (PAGE_SHIFT + 3)
>> +#define PLANE_INDEX_MASK 0x7
> Could we somehow ensure that it indeed matches VIDEO_MAX_PLANES?
>
> One thing that comes to my mind would be
>
> #define PLANE_INDEX_BITS 3
> #define PLANE_INDEX_SHIFT (PAGE_SHIFT + PLANE_INDEX_BITS)
> #define PLANE_INDEX_MASK BIT_MASK(PLANE_INDEX_BITS)
>
> BUILD_BUG_ON(BIT(PLANE_INDEX_BITS) != VIDEO_MAX_PLANES);
>
> Alternatively we could change the videodev2.h, so that we have
>
> #define VIDEO_MAX_PLANES_BITS 3
> #define VIDEO_MAX_PLANES (1U < VIDEO_MAX_PLANES_BITS)
>
> and then we can just VIDEO_MAX_PLANES_BITS in our definitions in this file
> and no checks would be necessary.
I would prefer this solution.
Hans should I do that in an other patch ?
Regards,
Benjamin
>
> Best regards,
> Tomasz
>
>> +#define MAX_BUFFER_INDEX BIT_MASK(30 - PLANE_INDEX_SHIFT)
>> +#define BUFFER_INDEX_MASK (MAX_BUFFER_INDEX - 1)
>> +
>> static int debug;
>> module_param(debug, int, 0644);
>>
>> @@ -358,21 +363,27 @@ static void __setup_offsets(struct vb2_buffer *vb)
>> unsigned int plane;
>> unsigned long offset = 0;
>>
>> - if (vb->index) {
>> - struct vb2_buffer *prev = q->bufs[vb->index - 1];
>> - struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
>> -
>> - offset = PAGE_ALIGN(p->m.offset + p->length);
>> - }
>> + /*
>> + * The offset "cookie" value has the following constraints:
>> + * - a buffer can have up to 8 planes.
>> + * - v4l2 mem2mem uses bit 30 to distinguish between
>> + * OUTPUT (aka "source", bit 30 is 0) and
>> + * CAPTURE (aka "destination", bit 30 is 1) buffers.
>> + * - must be page aligned
>> + * That led to this bit mapping when PAGE_SHIFT = 12:
>> + * |30 |29 15|14 12|11 0|
>> + * |DST_QUEUE_OFF_BASE|buffer index|plane index| 0 |
>> + * where there are 15 bits to store the buffer index.
>> + * Depending on PAGE_SHIFT value we can have fewer bits
>> + * to store the buffer index.
>> + */
>> + offset = vb->index << PLANE_INDEX_SHIFT;
>>
>> for (plane = 0; plane < vb->num_planes; ++plane) {
>> - vb->planes[plane].m.offset = offset;
>> + vb->planes[plane].m.offset = offset + (plane << PAGE_SHIFT);
>>
>> dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
>> vb->index, plane, offset);
>> -
>> - offset += vb->planes[plane].length;
>> - offset = PAGE_ALIGN(offset);
>> }
>> }
>>
>> @@ -2188,10 +2199,9 @@ EXPORT_SYMBOL_GPL(vb2_core_streamoff);
>> * __find_plane_by_offset() - find plane associated with the given offset
>> */
>> static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
>> - unsigned int *_buffer, unsigned int *_plane)
>> + struct vb2_buffer **vb, unsigned int *plane)
>> {
>> - struct vb2_buffer *vb;
>> - unsigned int buffer, plane;
>> + unsigned int buffer;
>>
>> /*
>> * Sanity checks to ensure the lock is held, MEMORY_MMAP is
>> @@ -2209,24 +2219,15 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
>> return -EBUSY;
>> }
>>
>> - /*
>> - * Go over all buffers and their planes, comparing the given offset
>> - * with an offset assigned to each plane. If a match is found,
>> - * return its buffer and plane numbers.
>> - */
>> - for (buffer = 0; buffer < q->num_buffers; ++buffer) {
>> - vb = q->bufs[buffer];
>> + /* Get buffer and plane from the offset */
>> + buffer = (offset >> PLANE_INDEX_SHIFT) & BUFFER_INDEX_MASK;
>> + *plane = (offset >> PAGE_SHIFT) & PLANE_INDEX_MASK;
>>
>> - for (plane = 0; plane < vb->num_planes; ++plane) {
>> - if (vb->planes[plane].m.offset == offset) {
>> - *_buffer = buffer;
>> - *_plane = plane;
>> - return 0;
>> - }
>> - }
>> - }
>> + if (buffer >= q->num_buffers || *plane >= q->bufs[buffer]->num_planes)
>> + return -EINVAL;
>>
>> - return -EINVAL;
>> + *vb = q->bufs[buffer];
>> + return 0;
>> }
>>
>> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
>> @@ -2306,7 +2307,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>> {
>> unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
>> struct vb2_buffer *vb;
>> - unsigned int buffer = 0, plane = 0;
>> + unsigned int plane = 0;
>> int ret;
>> unsigned long length;
>>
>> @@ -2335,12 +2336,10 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>> * Find the plane corresponding to the offset passed by userspace. This
>> * will return an error if not MEMORY_MMAP or file I/O is in progress.
>> */
>> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
>> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
>> if (ret)
>> goto unlock;
>>
>> - vb = q->bufs[buffer];
>> -
>> /*
>> * MMAP requires page_aligned buffers.
>> * The buffer length was page_aligned at __vb2_buf_mem_alloc(),
>> @@ -2368,7 +2367,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>> if (ret)
>> return ret;
>>
>> - dprintk(q, 3, "buffer %d, plane %d successfully mapped\n", buffer, plane);
>> + dprintk(q, 3, "buffer %u, plane %d successfully mapped\n", vb->index, plane);
>> return 0;
>> }
>> EXPORT_SYMBOL_GPL(vb2_mmap);
>> @@ -2382,7 +2381,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
>> {
>> unsigned long offset = pgoff << PAGE_SHIFT;
>> struct vb2_buffer *vb;
>> - unsigned int buffer, plane;
>> + unsigned int plane;
>> void *vaddr;
>> int ret;
>>
>> @@ -2392,12 +2391,10 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
>> * Find the plane corresponding to the offset passed by userspace. This
>> * will return an error if not MEMORY_MMAP or file I/O is in progress.
>> */
>> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
>> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
>> if (ret)
>> goto unlock;
>>
>> - vb = q->bufs[buffer];
>> -
>> vaddr = vb2_plane_vaddr(vb, plane);
>> mutex_unlock(&q->mmap_lock);
>> return vaddr ? (unsigned long)vaddr : -EINVAL;
>> --
>> 2.39.2
>>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 02/56] media: videobuf2: Rework offset 'cookie' encoding pattern
@ 2023-11-08 10:14 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-08 10:14 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 08/11/2023 à 07:23, Tomasz Figa a écrit :
> Hi Benjamin,
>
> On Tue, Oct 31, 2023 at 05:30:10PM +0100, Benjamin Gaignard wrote:
>> Change how offset 'cookie' field value is computed to make possible
>> to use more buffers.
>> The maximum number of buffers depends of PAGE_SHIFT value and can
>> go up to 0x7fff when PAGE_SHIFT = 12.
>> With this encoding pattern we know the maximum number that a queue
>> could store so we can check it at queue init time.
>> It also make easier and faster to find buffer and plane from using
>> the offset field.
>> Change __find_plane_by_offset() prototype to return the video buffer
>> itself rather than it index.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> .../media/common/videobuf2/videobuf2-core.c | 73 +++++++++----------
>> 1 file changed, 35 insertions(+), 38 deletions(-)
>>
> Thanks a lot for working on this series. Just one comment inline.
>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index a5e57affeb30..09be8e026044 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -31,6 +31,11 @@
>>
>> #include <trace/events/vb2.h>
>>
>> +#define PLANE_INDEX_SHIFT (PAGE_SHIFT + 3)
>> +#define PLANE_INDEX_MASK 0x7
> Could we somehow ensure that it indeed matches VIDEO_MAX_PLANES?
>
> One thing that comes to my mind would be
>
> #define PLANE_INDEX_BITS 3
> #define PLANE_INDEX_SHIFT (PAGE_SHIFT + PLANE_INDEX_BITS)
> #define PLANE_INDEX_MASK BIT_MASK(PLANE_INDEX_BITS)
>
> BUILD_BUG_ON(BIT(PLANE_INDEX_BITS) != VIDEO_MAX_PLANES);
>
> Alternatively we could change the videodev2.h, so that we have
>
> #define VIDEO_MAX_PLANES_BITS 3
> #define VIDEO_MAX_PLANES (1U < VIDEO_MAX_PLANES_BITS)
>
> and then we can just VIDEO_MAX_PLANES_BITS in our definitions in this file
> and no checks would be necessary.
I would prefer this solution.
Hans should I do that in an other patch ?
Regards,
Benjamin
>
> Best regards,
> Tomasz
>
>> +#define MAX_BUFFER_INDEX BIT_MASK(30 - PLANE_INDEX_SHIFT)
>> +#define BUFFER_INDEX_MASK (MAX_BUFFER_INDEX - 1)
>> +
>> static int debug;
>> module_param(debug, int, 0644);
>>
>> @@ -358,21 +363,27 @@ static void __setup_offsets(struct vb2_buffer *vb)
>> unsigned int plane;
>> unsigned long offset = 0;
>>
>> - if (vb->index) {
>> - struct vb2_buffer *prev = q->bufs[vb->index - 1];
>> - struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
>> -
>> - offset = PAGE_ALIGN(p->m.offset + p->length);
>> - }
>> + /*
>> + * The offset "cookie" value has the following constraints:
>> + * - a buffer can have up to 8 planes.
>> + * - v4l2 mem2mem uses bit 30 to distinguish between
>> + * OUTPUT (aka "source", bit 30 is 0) and
>> + * CAPTURE (aka "destination", bit 30 is 1) buffers.
>> + * - must be page aligned
>> + * That led to this bit mapping when PAGE_SHIFT = 12:
>> + * |30 |29 15|14 12|11 0|
>> + * |DST_QUEUE_OFF_BASE|buffer index|plane index| 0 |
>> + * where there are 15 bits to store the buffer index.
>> + * Depending on PAGE_SHIFT value we can have fewer bits
>> + * to store the buffer index.
>> + */
>> + offset = vb->index << PLANE_INDEX_SHIFT;
>>
>> for (plane = 0; plane < vb->num_planes; ++plane) {
>> - vb->planes[plane].m.offset = offset;
>> + vb->planes[plane].m.offset = offset + (plane << PAGE_SHIFT);
>>
>> dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
>> vb->index, plane, offset);
>> -
>> - offset += vb->planes[plane].length;
>> - offset = PAGE_ALIGN(offset);
>> }
>> }
>>
>> @@ -2188,10 +2199,9 @@ EXPORT_SYMBOL_GPL(vb2_core_streamoff);
>> * __find_plane_by_offset() - find plane associated with the given offset
>> */
>> static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
>> - unsigned int *_buffer, unsigned int *_plane)
>> + struct vb2_buffer **vb, unsigned int *plane)
>> {
>> - struct vb2_buffer *vb;
>> - unsigned int buffer, plane;
>> + unsigned int buffer;
>>
>> /*
>> * Sanity checks to ensure the lock is held, MEMORY_MMAP is
>> @@ -2209,24 +2219,15 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
>> return -EBUSY;
>> }
>>
>> - /*
>> - * Go over all buffers and their planes, comparing the given offset
>> - * with an offset assigned to each plane. If a match is found,
>> - * return its buffer and plane numbers.
>> - */
>> - for (buffer = 0; buffer < q->num_buffers; ++buffer) {
>> - vb = q->bufs[buffer];
>> + /* Get buffer and plane from the offset */
>> + buffer = (offset >> PLANE_INDEX_SHIFT) & BUFFER_INDEX_MASK;
>> + *plane = (offset >> PAGE_SHIFT) & PLANE_INDEX_MASK;
>>
>> - for (plane = 0; plane < vb->num_planes; ++plane) {
>> - if (vb->planes[plane].m.offset == offset) {
>> - *_buffer = buffer;
>> - *_plane = plane;
>> - return 0;
>> - }
>> - }
>> - }
>> + if (buffer >= q->num_buffers || *plane >= q->bufs[buffer]->num_planes)
>> + return -EINVAL;
>>
>> - return -EINVAL;
>> + *vb = q->bufs[buffer];
>> + return 0;
>> }
>>
>> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
>> @@ -2306,7 +2307,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>> {
>> unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
>> struct vb2_buffer *vb;
>> - unsigned int buffer = 0, plane = 0;
>> + unsigned int plane = 0;
>> int ret;
>> unsigned long length;
>>
>> @@ -2335,12 +2336,10 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>> * Find the plane corresponding to the offset passed by userspace. This
>> * will return an error if not MEMORY_MMAP or file I/O is in progress.
>> */
>> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
>> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
>> if (ret)
>> goto unlock;
>>
>> - vb = q->bufs[buffer];
>> -
>> /*
>> * MMAP requires page_aligned buffers.
>> * The buffer length was page_aligned at __vb2_buf_mem_alloc(),
>> @@ -2368,7 +2367,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>> if (ret)
>> return ret;
>>
>> - dprintk(q, 3, "buffer %d, plane %d successfully mapped\n", buffer, plane);
>> + dprintk(q, 3, "buffer %u, plane %d successfully mapped\n", vb->index, plane);
>> return 0;
>> }
>> EXPORT_SYMBOL_GPL(vb2_mmap);
>> @@ -2382,7 +2381,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
>> {
>> unsigned long offset = pgoff << PAGE_SHIFT;
>> struct vb2_buffer *vb;
>> - unsigned int buffer, plane;
>> + unsigned int plane;
>> void *vaddr;
>> int ret;
>>
>> @@ -2392,12 +2391,10 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
>> * Find the plane corresponding to the offset passed by userspace. This
>> * will return an error if not MEMORY_MMAP or file I/O is in progress.
>> */
>> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
>> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
>> if (ret)
>> goto unlock;
>>
>> - vb = q->bufs[buffer];
>> -
>> vaddr = vb2_plane_vaddr(vb, plane);
>> mutex_unlock(&q->mmap_lock);
>> return vaddr ? (unsigned long)vaddr : -EINVAL;
>> --
>> 2.39.2
>>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 05/56] media: videobuf2: Access vb2_queue bufs array through helper functions
2023-11-08 8:50 ` Tomasz Figa
(?)
@ 2023-11-08 10:24 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-08 10:24 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 08/11/2023 à 09:50, Tomasz Figa a écrit :
> On Tue, Oct 31, 2023 at 05:30:13PM +0100, Benjamin Gaignard wrote:
>> This patch adds 2 helpers functions to add and remove vb2 buffers
>> from a queue. With these 2 and vb2_get_buffer(), bufs field of
>> struct vb2_queue becomes like a private member of the structure.
>>
>> After each call to vb2_get_buffer() we need to be sure that we get
>> a valid pointer in preparation for when buffers can be deleted.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> .../media/common/videobuf2/videobuf2-core.c | 151 +++++++++++++-----
>> .../media/common/videobuf2/videobuf2-v4l2.c | 50 ++++--
>> 2 files changed, 149 insertions(+), 52 deletions(-)
>>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index 968b7c0e7934..b406a30a9b35 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -408,6 +408,31 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
>> vb->skip_cache_sync_on_finish = 1;
>> }
>>
>> +/**
>> + * vb2_queue_add_buffer() - add a buffer to a queue
>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
>> + * @vb: pointer to &struct vb2_buffer to be added to the queue.
>> + * @index: index where add vb2_buffer in the queue
>> + */
>> +static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
>> +{
>> + WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
> nit: Would it make sense to also ensure that vb->vb2_queue is NULL?
Since vb->vb2_queue and q->bufs[index] are always set and clear in the same
functions I don't think it is useful to test the both here.
>
>> +
>> + q->bufs[index] = vb;
>> + vb->index = index;
>> + vb->vb2_queue = q;
>> +}
> [snip]
>> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> index d19d82a75ac6..2ffb097bf00a 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> @@ -377,6 +377,12 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
>> return -EINVAL;
>> }
>>
>> + vb = vb2_get_buffer(q, b->index);
>> + if (!vb) {
>> + dprintk(q, 1, "%s: buffer %u is NULL\n", opname, b->index);
>> + return -EINVAL;
>> + }
>> +
> Is this a leftover from earlier revisions? I think it shouldn't be
> needed anymore after the previous patch which changed the function to
> get vb as an argument.
You are right I will fix it.
>
> Best regards,
> Tomasz
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 05/56] media: videobuf2: Access vb2_queue bufs array through helper functions
@ 2023-11-08 10:24 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-08 10:24 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 08/11/2023 à 09:50, Tomasz Figa a écrit :
> On Tue, Oct 31, 2023 at 05:30:13PM +0100, Benjamin Gaignard wrote:
>> This patch adds 2 helpers functions to add and remove vb2 buffers
>> from a queue. With these 2 and vb2_get_buffer(), bufs field of
>> struct vb2_queue becomes like a private member of the structure.
>>
>> After each call to vb2_get_buffer() we need to be sure that we get
>> a valid pointer in preparation for when buffers can be deleted.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> .../media/common/videobuf2/videobuf2-core.c | 151 +++++++++++++-----
>> .../media/common/videobuf2/videobuf2-v4l2.c | 50 ++++--
>> 2 files changed, 149 insertions(+), 52 deletions(-)
>>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index 968b7c0e7934..b406a30a9b35 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -408,6 +408,31 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
>> vb->skip_cache_sync_on_finish = 1;
>> }
>>
>> +/**
>> + * vb2_queue_add_buffer() - add a buffer to a queue
>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
>> + * @vb: pointer to &struct vb2_buffer to be added to the queue.
>> + * @index: index where add vb2_buffer in the queue
>> + */
>> +static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
>> +{
>> + WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
> nit: Would it make sense to also ensure that vb->vb2_queue is NULL?
Since vb->vb2_queue and q->bufs[index] are always set and clear in the same
functions I don't think it is useful to test the both here.
>
>> +
>> + q->bufs[index] = vb;
>> + vb->index = index;
>> + vb->vb2_queue = q;
>> +}
> [snip]
>> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> index d19d82a75ac6..2ffb097bf00a 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> @@ -377,6 +377,12 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
>> return -EINVAL;
>> }
>>
>> + vb = vb2_get_buffer(q, b->index);
>> + if (!vb) {
>> + dprintk(q, 1, "%s: buffer %u is NULL\n", opname, b->index);
>> + return -EINVAL;
>> + }
>> +
> Is this a leftover from earlier revisions? I think it shouldn't be
> needed anymore after the previous patch which changed the function to
> get vb as an argument.
You are right I will fix it.
>
> Best regards,
> Tomasz
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 05/56] media: videobuf2: Access vb2_queue bufs array through helper functions
@ 2023-11-08 10:24 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-08 10:24 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 08/11/2023 à 09:50, Tomasz Figa a écrit :
> On Tue, Oct 31, 2023 at 05:30:13PM +0100, Benjamin Gaignard wrote:
>> This patch adds 2 helpers functions to add and remove vb2 buffers
>> from a queue. With these 2 and vb2_get_buffer(), bufs field of
>> struct vb2_queue becomes like a private member of the structure.
>>
>> After each call to vb2_get_buffer() we need to be sure that we get
>> a valid pointer in preparation for when buffers can be deleted.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> .../media/common/videobuf2/videobuf2-core.c | 151 +++++++++++++-----
>> .../media/common/videobuf2/videobuf2-v4l2.c | 50 ++++--
>> 2 files changed, 149 insertions(+), 52 deletions(-)
>>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index 968b7c0e7934..b406a30a9b35 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -408,6 +408,31 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
>> vb->skip_cache_sync_on_finish = 1;
>> }
>>
>> +/**
>> + * vb2_queue_add_buffer() - add a buffer to a queue
>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
>> + * @vb: pointer to &struct vb2_buffer to be added to the queue.
>> + * @index: index where add vb2_buffer in the queue
>> + */
>> +static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
>> +{
>> + WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
> nit: Would it make sense to also ensure that vb->vb2_queue is NULL?
Since vb->vb2_queue and q->bufs[index] are always set and clear in the same
functions I don't think it is useful to test the both here.
>
>> +
>> + q->bufs[index] = vb;
>> + vb->index = index;
>> + vb->vb2_queue = q;
>> +}
> [snip]
>> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> index d19d82a75ac6..2ffb097bf00a 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> @@ -377,6 +377,12 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
>> return -EINVAL;
>> }
>>
>> + vb = vb2_get_buffer(q, b->index);
>> + if (!vb) {
>> + dprintk(q, 1, "%s: buffer %u is NULL\n", opname, b->index);
>> + return -EINVAL;
>> + }
>> +
> Is this a leftover from earlier revisions? I think it shouldn't be
> needed anymore after the previous patch which changed the function to
> get vb as an argument.
You are right I will fix it.
>
> Best regards,
> Tomasz
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 02/56] media: videobuf2: Rework offset 'cookie' encoding pattern
2023-11-08 10:14 ` Benjamin Gaignard
(?)
@ 2023-11-08 10:31 ` Hans Verkuil
-1 siblings, 0 replies; 399+ messages in thread
From: Hans Verkuil @ 2023-11-08 10:31 UTC (permalink / raw)
To: Benjamin Gaignard, Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
nicolas.dufresne, linux-media, linux-kernel, linux-arm-kernel,
linux-mediatek, linux-arm-msm, linux-rockchip, linux-staging,
kernel
On 08/11/2023 11:14, Benjamin Gaignard wrote:
>
> Le 08/11/2023 à 07:23, Tomasz Figa a écrit :
>> Hi Benjamin,
>>
>> On Tue, Oct 31, 2023 at 05:30:10PM +0100, Benjamin Gaignard wrote:
>>> Change how offset 'cookie' field value is computed to make possible
>>> to use more buffers.
>>> The maximum number of buffers depends of PAGE_SHIFT value and can
>>> go up to 0x7fff when PAGE_SHIFT = 12.
>>> With this encoding pattern we know the maximum number that a queue
>>> could store so we can check it at queue init time.
>>> It also make easier and faster to find buffer and plane from using
>>> the offset field.
>>> Change __find_plane_by_offset() prototype to return the video buffer
>>> itself rather than it index.
>>>
>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>>> ---
>>> .../media/common/videobuf2/videobuf2-core.c | 73 +++++++++----------
>>> 1 file changed, 35 insertions(+), 38 deletions(-)
>>>
>> Thanks a lot for working on this series. Just one comment inline.
>>
>>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>>> index a5e57affeb30..09be8e026044 100644
>>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>>> @@ -31,6 +31,11 @@
>>> #include <trace/events/vb2.h>
>>> +#define PLANE_INDEX_SHIFT (PAGE_SHIFT + 3)
>>> +#define PLANE_INDEX_MASK 0x7
>> Could we somehow ensure that it indeed matches VIDEO_MAX_PLANES?
>>
>> One thing that comes to my mind would be
>>
>> #define PLANE_INDEX_BITS 3
>> #define PLANE_INDEX_SHIFT (PAGE_SHIFT + PLANE_INDEX_BITS)
>> #define PLANE_INDEX_MASK BIT_MASK(PLANE_INDEX_BITS)
>>
>> BUILD_BUG_ON(BIT(PLANE_INDEX_BITS) != VIDEO_MAX_PLANES);
>>
>> Alternatively we could change the videodev2.h, so that we have
>>
>> #define VIDEO_MAX_PLANES_BITS 3
>> #define VIDEO_MAX_PLANES (1U < VIDEO_MAX_PLANES_BITS)
>>
>> and then we can just VIDEO_MAX_PLANES_BITS in our definitions in this file
>> and no checks would be necessary.
>
> I would prefer this solution.
> Hans should I do that in an other patch ?
I prefer to not make changes in videodev2.h, to be honest. I think it is fine to
just add a check in videobuf2-core.c.
Regards,
Hans
>
> Regards,
> Benjamin
>
>>
>> Best regards,
>> Tomasz
>>
>>> +#define MAX_BUFFER_INDEX BIT_MASK(30 - PLANE_INDEX_SHIFT)
>>> +#define BUFFER_INDEX_MASK (MAX_BUFFER_INDEX - 1)
>>> +
>>> static int debug;
>>> module_param(debug, int, 0644);
>>> @@ -358,21 +363,27 @@ static void __setup_offsets(struct vb2_buffer *vb)
>>> unsigned int plane;
>>> unsigned long offset = 0;
>>> - if (vb->index) {
>>> - struct vb2_buffer *prev = q->bufs[vb->index - 1];
>>> - struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
>>> -
>>> - offset = PAGE_ALIGN(p->m.offset + p->length);
>>> - }
>>> + /*
>>> + * The offset "cookie" value has the following constraints:
>>> + * - a buffer can have up to 8 planes.
>>> + * - v4l2 mem2mem uses bit 30 to distinguish between
>>> + * OUTPUT (aka "source", bit 30 is 0) and
>>> + * CAPTURE (aka "destination", bit 30 is 1) buffers.
>>> + * - must be page aligned
>>> + * That led to this bit mapping when PAGE_SHIFT = 12:
>>> + * |30 |29 15|14 12|11 0|
>>> + * |DST_QUEUE_OFF_BASE|buffer index|plane index| 0 |
>>> + * where there are 15 bits to store the buffer index.
>>> + * Depending on PAGE_SHIFT value we can have fewer bits
>>> + * to store the buffer index.
>>> + */
>>> + offset = vb->index << PLANE_INDEX_SHIFT;
>>> for (plane = 0; plane < vb->num_planes; ++plane) {
>>> - vb->planes[plane].m.offset = offset;
>>> + vb->planes[plane].m.offset = offset + (plane << PAGE_SHIFT);
>>> dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
>>> vb->index, plane, offset);
>>> -
>>> - offset += vb->planes[plane].length;
>>> - offset = PAGE_ALIGN(offset);
>>> }
>>> }
>>> @@ -2188,10 +2199,9 @@ EXPORT_SYMBOL_GPL(vb2_core_streamoff);
>>> * __find_plane_by_offset() - find plane associated with the given offset
>>> */
>>> static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
>>> - unsigned int *_buffer, unsigned int *_plane)
>>> + struct vb2_buffer **vb, unsigned int *plane)
>>> {
>>> - struct vb2_buffer *vb;
>>> - unsigned int buffer, plane;
>>> + unsigned int buffer;
>>> /*
>>> * Sanity checks to ensure the lock is held, MEMORY_MMAP is
>>> @@ -2209,24 +2219,15 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
>>> return -EBUSY;
>>> }
>>> - /*
>>> - * Go over all buffers and their planes, comparing the given offset
>>> - * with an offset assigned to each plane. If a match is found,
>>> - * return its buffer and plane numbers.
>>> - */
>>> - for (buffer = 0; buffer < q->num_buffers; ++buffer) {
>>> - vb = q->bufs[buffer];
>>> + /* Get buffer and plane from the offset */
>>> + buffer = (offset >> PLANE_INDEX_SHIFT) & BUFFER_INDEX_MASK;
>>> + *plane = (offset >> PAGE_SHIFT) & PLANE_INDEX_MASK;
>>> - for (plane = 0; plane < vb->num_planes; ++plane) {
>>> - if (vb->planes[plane].m.offset == offset) {
>>> - *_buffer = buffer;
>>> - *_plane = plane;
>>> - return 0;
>>> - }
>>> - }
>>> - }
>>> + if (buffer >= q->num_buffers || *plane >= q->bufs[buffer]->num_planes)
>>> + return -EINVAL;
>>> - return -EINVAL;
>>> + *vb = q->bufs[buffer];
>>> + return 0;
>>> }
>>> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
>>> @@ -2306,7 +2307,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>>> {
>>> unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
>>> struct vb2_buffer *vb;
>>> - unsigned int buffer = 0, plane = 0;
>>> + unsigned int plane = 0;
>>> int ret;
>>> unsigned long length;
>>> @@ -2335,12 +2336,10 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>>> * Find the plane corresponding to the offset passed by userspace. This
>>> * will return an error if not MEMORY_MMAP or file I/O is in progress.
>>> */
>>> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
>>> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
>>> if (ret)
>>> goto unlock;
>>> - vb = q->bufs[buffer];
>>> -
>>> /*
>>> * MMAP requires page_aligned buffers.
>>> * The buffer length was page_aligned at __vb2_buf_mem_alloc(),
>>> @@ -2368,7 +2367,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>>> if (ret)
>>> return ret;
>>> - dprintk(q, 3, "buffer %d, plane %d successfully mapped\n", buffer, plane);
>>> + dprintk(q, 3, "buffer %u, plane %d successfully mapped\n", vb->index, plane);
>>> return 0;
>>> }
>>> EXPORT_SYMBOL_GPL(vb2_mmap);
>>> @@ -2382,7 +2381,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
>>> {
>>> unsigned long offset = pgoff << PAGE_SHIFT;
>>> struct vb2_buffer *vb;
>>> - unsigned int buffer, plane;
>>> + unsigned int plane;
>>> void *vaddr;
>>> int ret;
>>> @@ -2392,12 +2391,10 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
>>> * Find the plane corresponding to the offset passed by userspace. This
>>> * will return an error if not MEMORY_MMAP or file I/O is in progress.
>>> */
>>> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
>>> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
>>> if (ret)
>>> goto unlock;
>>> - vb = q->bufs[buffer];
>>> -
>>> vaddr = vb2_plane_vaddr(vb, plane);
>>> mutex_unlock(&q->mmap_lock);
>>> return vaddr ? (unsigned long)vaddr : -EINVAL;
>>> --
>>> 2.39.2
>>>
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 02/56] media: videobuf2: Rework offset 'cookie' encoding pattern
@ 2023-11-08 10:31 ` Hans Verkuil
0 siblings, 0 replies; 399+ messages in thread
From: Hans Verkuil @ 2023-11-08 10:31 UTC (permalink / raw)
To: Benjamin Gaignard, Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
nicolas.dufresne, linux-media, linux-kernel, linux-arm-kernel,
linux-mediatek, linux-arm-msm, linux-rockchip, linux-staging,
kernel
On 08/11/2023 11:14, Benjamin Gaignard wrote:
>
> Le 08/11/2023 à 07:23, Tomasz Figa a écrit :
>> Hi Benjamin,
>>
>> On Tue, Oct 31, 2023 at 05:30:10PM +0100, Benjamin Gaignard wrote:
>>> Change how offset 'cookie' field value is computed to make possible
>>> to use more buffers.
>>> The maximum number of buffers depends of PAGE_SHIFT value and can
>>> go up to 0x7fff when PAGE_SHIFT = 12.
>>> With this encoding pattern we know the maximum number that a queue
>>> could store so we can check it at queue init time.
>>> It also make easier and faster to find buffer and plane from using
>>> the offset field.
>>> Change __find_plane_by_offset() prototype to return the video buffer
>>> itself rather than it index.
>>>
>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>>> ---
>>> .../media/common/videobuf2/videobuf2-core.c | 73 +++++++++----------
>>> 1 file changed, 35 insertions(+), 38 deletions(-)
>>>
>> Thanks a lot for working on this series. Just one comment inline.
>>
>>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>>> index a5e57affeb30..09be8e026044 100644
>>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>>> @@ -31,6 +31,11 @@
>>> #include <trace/events/vb2.h>
>>> +#define PLANE_INDEX_SHIFT (PAGE_SHIFT + 3)
>>> +#define PLANE_INDEX_MASK 0x7
>> Could we somehow ensure that it indeed matches VIDEO_MAX_PLANES?
>>
>> One thing that comes to my mind would be
>>
>> #define PLANE_INDEX_BITS 3
>> #define PLANE_INDEX_SHIFT (PAGE_SHIFT + PLANE_INDEX_BITS)
>> #define PLANE_INDEX_MASK BIT_MASK(PLANE_INDEX_BITS)
>>
>> BUILD_BUG_ON(BIT(PLANE_INDEX_BITS) != VIDEO_MAX_PLANES);
>>
>> Alternatively we could change the videodev2.h, so that we have
>>
>> #define VIDEO_MAX_PLANES_BITS 3
>> #define VIDEO_MAX_PLANES (1U < VIDEO_MAX_PLANES_BITS)
>>
>> and then we can just VIDEO_MAX_PLANES_BITS in our definitions in this file
>> and no checks would be necessary.
>
> I would prefer this solution.
> Hans should I do that in an other patch ?
I prefer to not make changes in videodev2.h, to be honest. I think it is fine to
just add a check in videobuf2-core.c.
Regards,
Hans
>
> Regards,
> Benjamin
>
>>
>> Best regards,
>> Tomasz
>>
>>> +#define MAX_BUFFER_INDEX BIT_MASK(30 - PLANE_INDEX_SHIFT)
>>> +#define BUFFER_INDEX_MASK (MAX_BUFFER_INDEX - 1)
>>> +
>>> static int debug;
>>> module_param(debug, int, 0644);
>>> @@ -358,21 +363,27 @@ static void __setup_offsets(struct vb2_buffer *vb)
>>> unsigned int plane;
>>> unsigned long offset = 0;
>>> - if (vb->index) {
>>> - struct vb2_buffer *prev = q->bufs[vb->index - 1];
>>> - struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
>>> -
>>> - offset = PAGE_ALIGN(p->m.offset + p->length);
>>> - }
>>> + /*
>>> + * The offset "cookie" value has the following constraints:
>>> + * - a buffer can have up to 8 planes.
>>> + * - v4l2 mem2mem uses bit 30 to distinguish between
>>> + * OUTPUT (aka "source", bit 30 is 0) and
>>> + * CAPTURE (aka "destination", bit 30 is 1) buffers.
>>> + * - must be page aligned
>>> + * That led to this bit mapping when PAGE_SHIFT = 12:
>>> + * |30 |29 15|14 12|11 0|
>>> + * |DST_QUEUE_OFF_BASE|buffer index|plane index| 0 |
>>> + * where there are 15 bits to store the buffer index.
>>> + * Depending on PAGE_SHIFT value we can have fewer bits
>>> + * to store the buffer index.
>>> + */
>>> + offset = vb->index << PLANE_INDEX_SHIFT;
>>> for (plane = 0; plane < vb->num_planes; ++plane) {
>>> - vb->planes[plane].m.offset = offset;
>>> + vb->planes[plane].m.offset = offset + (plane << PAGE_SHIFT);
>>> dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
>>> vb->index, plane, offset);
>>> -
>>> - offset += vb->planes[plane].length;
>>> - offset = PAGE_ALIGN(offset);
>>> }
>>> }
>>> @@ -2188,10 +2199,9 @@ EXPORT_SYMBOL_GPL(vb2_core_streamoff);
>>> * __find_plane_by_offset() - find plane associated with the given offset
>>> */
>>> static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
>>> - unsigned int *_buffer, unsigned int *_plane)
>>> + struct vb2_buffer **vb, unsigned int *plane)
>>> {
>>> - struct vb2_buffer *vb;
>>> - unsigned int buffer, plane;
>>> + unsigned int buffer;
>>> /*
>>> * Sanity checks to ensure the lock is held, MEMORY_MMAP is
>>> @@ -2209,24 +2219,15 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
>>> return -EBUSY;
>>> }
>>> - /*
>>> - * Go over all buffers and their planes, comparing the given offset
>>> - * with an offset assigned to each plane. If a match is found,
>>> - * return its buffer and plane numbers.
>>> - */
>>> - for (buffer = 0; buffer < q->num_buffers; ++buffer) {
>>> - vb = q->bufs[buffer];
>>> + /* Get buffer and plane from the offset */
>>> + buffer = (offset >> PLANE_INDEX_SHIFT) & BUFFER_INDEX_MASK;
>>> + *plane = (offset >> PAGE_SHIFT) & PLANE_INDEX_MASK;
>>> - for (plane = 0; plane < vb->num_planes; ++plane) {
>>> - if (vb->planes[plane].m.offset == offset) {
>>> - *_buffer = buffer;
>>> - *_plane = plane;
>>> - return 0;
>>> - }
>>> - }
>>> - }
>>> + if (buffer >= q->num_buffers || *plane >= q->bufs[buffer]->num_planes)
>>> + return -EINVAL;
>>> - return -EINVAL;
>>> + *vb = q->bufs[buffer];
>>> + return 0;
>>> }
>>> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
>>> @@ -2306,7 +2307,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>>> {
>>> unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
>>> struct vb2_buffer *vb;
>>> - unsigned int buffer = 0, plane = 0;
>>> + unsigned int plane = 0;
>>> int ret;
>>> unsigned long length;
>>> @@ -2335,12 +2336,10 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>>> * Find the plane corresponding to the offset passed by userspace. This
>>> * will return an error if not MEMORY_MMAP or file I/O is in progress.
>>> */
>>> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
>>> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
>>> if (ret)
>>> goto unlock;
>>> - vb = q->bufs[buffer];
>>> -
>>> /*
>>> * MMAP requires page_aligned buffers.
>>> * The buffer length was page_aligned at __vb2_buf_mem_alloc(),
>>> @@ -2368,7 +2367,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>>> if (ret)
>>> return ret;
>>> - dprintk(q, 3, "buffer %d, plane %d successfully mapped\n", buffer, plane);
>>> + dprintk(q, 3, "buffer %u, plane %d successfully mapped\n", vb->index, plane);
>>> return 0;
>>> }
>>> EXPORT_SYMBOL_GPL(vb2_mmap);
>>> @@ -2382,7 +2381,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
>>> {
>>> unsigned long offset = pgoff << PAGE_SHIFT;
>>> struct vb2_buffer *vb;
>>> - unsigned int buffer, plane;
>>> + unsigned int plane;
>>> void *vaddr;
>>> int ret;
>>> @@ -2392,12 +2391,10 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
>>> * Find the plane corresponding to the offset passed by userspace. This
>>> * will return an error if not MEMORY_MMAP or file I/O is in progress.
>>> */
>>> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
>>> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
>>> if (ret)
>>> goto unlock;
>>> - vb = q->bufs[buffer];
>>> -
>>> vaddr = vb2_plane_vaddr(vb, plane);
>>> mutex_unlock(&q->mmap_lock);
>>> return vaddr ? (unsigned long)vaddr : -EINVAL;
>>> --
>>> 2.39.2
>>>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 02/56] media: videobuf2: Rework offset 'cookie' encoding pattern
@ 2023-11-08 10:31 ` Hans Verkuil
0 siblings, 0 replies; 399+ messages in thread
From: Hans Verkuil @ 2023-11-08 10:31 UTC (permalink / raw)
To: Benjamin Gaignard, Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
nicolas.dufresne, linux-media, linux-kernel, linux-arm-kernel,
linux-mediatek, linux-arm-msm, linux-rockchip, linux-staging,
kernel
On 08/11/2023 11:14, Benjamin Gaignard wrote:
>
> Le 08/11/2023 à 07:23, Tomasz Figa a écrit :
>> Hi Benjamin,
>>
>> On Tue, Oct 31, 2023 at 05:30:10PM +0100, Benjamin Gaignard wrote:
>>> Change how offset 'cookie' field value is computed to make possible
>>> to use more buffers.
>>> The maximum number of buffers depends of PAGE_SHIFT value and can
>>> go up to 0x7fff when PAGE_SHIFT = 12.
>>> With this encoding pattern we know the maximum number that a queue
>>> could store so we can check it at queue init time.
>>> It also make easier and faster to find buffer and plane from using
>>> the offset field.
>>> Change __find_plane_by_offset() prototype to return the video buffer
>>> itself rather than it index.
>>>
>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>>> ---
>>> .../media/common/videobuf2/videobuf2-core.c | 73 +++++++++----------
>>> 1 file changed, 35 insertions(+), 38 deletions(-)
>>>
>> Thanks a lot for working on this series. Just one comment inline.
>>
>>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>>> index a5e57affeb30..09be8e026044 100644
>>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>>> @@ -31,6 +31,11 @@
>>> #include <trace/events/vb2.h>
>>> +#define PLANE_INDEX_SHIFT (PAGE_SHIFT + 3)
>>> +#define PLANE_INDEX_MASK 0x7
>> Could we somehow ensure that it indeed matches VIDEO_MAX_PLANES?
>>
>> One thing that comes to my mind would be
>>
>> #define PLANE_INDEX_BITS 3
>> #define PLANE_INDEX_SHIFT (PAGE_SHIFT + PLANE_INDEX_BITS)
>> #define PLANE_INDEX_MASK BIT_MASK(PLANE_INDEX_BITS)
>>
>> BUILD_BUG_ON(BIT(PLANE_INDEX_BITS) != VIDEO_MAX_PLANES);
>>
>> Alternatively we could change the videodev2.h, so that we have
>>
>> #define VIDEO_MAX_PLANES_BITS 3
>> #define VIDEO_MAX_PLANES (1U < VIDEO_MAX_PLANES_BITS)
>>
>> and then we can just VIDEO_MAX_PLANES_BITS in our definitions in this file
>> and no checks would be necessary.
>
> I would prefer this solution.
> Hans should I do that in an other patch ?
I prefer to not make changes in videodev2.h, to be honest. I think it is fine to
just add a check in videobuf2-core.c.
Regards,
Hans
>
> Regards,
> Benjamin
>
>>
>> Best regards,
>> Tomasz
>>
>>> +#define MAX_BUFFER_INDEX BIT_MASK(30 - PLANE_INDEX_SHIFT)
>>> +#define BUFFER_INDEX_MASK (MAX_BUFFER_INDEX - 1)
>>> +
>>> static int debug;
>>> module_param(debug, int, 0644);
>>> @@ -358,21 +363,27 @@ static void __setup_offsets(struct vb2_buffer *vb)
>>> unsigned int plane;
>>> unsigned long offset = 0;
>>> - if (vb->index) {
>>> - struct vb2_buffer *prev = q->bufs[vb->index - 1];
>>> - struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
>>> -
>>> - offset = PAGE_ALIGN(p->m.offset + p->length);
>>> - }
>>> + /*
>>> + * The offset "cookie" value has the following constraints:
>>> + * - a buffer can have up to 8 planes.
>>> + * - v4l2 mem2mem uses bit 30 to distinguish between
>>> + * OUTPUT (aka "source", bit 30 is 0) and
>>> + * CAPTURE (aka "destination", bit 30 is 1) buffers.
>>> + * - must be page aligned
>>> + * That led to this bit mapping when PAGE_SHIFT = 12:
>>> + * |30 |29 15|14 12|11 0|
>>> + * |DST_QUEUE_OFF_BASE|buffer index|plane index| 0 |
>>> + * where there are 15 bits to store the buffer index.
>>> + * Depending on PAGE_SHIFT value we can have fewer bits
>>> + * to store the buffer index.
>>> + */
>>> + offset = vb->index << PLANE_INDEX_SHIFT;
>>> for (plane = 0; plane < vb->num_planes; ++plane) {
>>> - vb->planes[plane].m.offset = offset;
>>> + vb->planes[plane].m.offset = offset + (plane << PAGE_SHIFT);
>>> dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
>>> vb->index, plane, offset);
>>> -
>>> - offset += vb->planes[plane].length;
>>> - offset = PAGE_ALIGN(offset);
>>> }
>>> }
>>> @@ -2188,10 +2199,9 @@ EXPORT_SYMBOL_GPL(vb2_core_streamoff);
>>> * __find_plane_by_offset() - find plane associated with the given offset
>>> */
>>> static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
>>> - unsigned int *_buffer, unsigned int *_plane)
>>> + struct vb2_buffer **vb, unsigned int *plane)
>>> {
>>> - struct vb2_buffer *vb;
>>> - unsigned int buffer, plane;
>>> + unsigned int buffer;
>>> /*
>>> * Sanity checks to ensure the lock is held, MEMORY_MMAP is
>>> @@ -2209,24 +2219,15 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
>>> return -EBUSY;
>>> }
>>> - /*
>>> - * Go over all buffers and their planes, comparing the given offset
>>> - * with an offset assigned to each plane. If a match is found,
>>> - * return its buffer and plane numbers.
>>> - */
>>> - for (buffer = 0; buffer < q->num_buffers; ++buffer) {
>>> - vb = q->bufs[buffer];
>>> + /* Get buffer and plane from the offset */
>>> + buffer = (offset >> PLANE_INDEX_SHIFT) & BUFFER_INDEX_MASK;
>>> + *plane = (offset >> PAGE_SHIFT) & PLANE_INDEX_MASK;
>>> - for (plane = 0; plane < vb->num_planes; ++plane) {
>>> - if (vb->planes[plane].m.offset == offset) {
>>> - *_buffer = buffer;
>>> - *_plane = plane;
>>> - return 0;
>>> - }
>>> - }
>>> - }
>>> + if (buffer >= q->num_buffers || *plane >= q->bufs[buffer]->num_planes)
>>> + return -EINVAL;
>>> - return -EINVAL;
>>> + *vb = q->bufs[buffer];
>>> + return 0;
>>> }
>>> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
>>> @@ -2306,7 +2307,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>>> {
>>> unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
>>> struct vb2_buffer *vb;
>>> - unsigned int buffer = 0, plane = 0;
>>> + unsigned int plane = 0;
>>> int ret;
>>> unsigned long length;
>>> @@ -2335,12 +2336,10 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>>> * Find the plane corresponding to the offset passed by userspace. This
>>> * will return an error if not MEMORY_MMAP or file I/O is in progress.
>>> */
>>> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
>>> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
>>> if (ret)
>>> goto unlock;
>>> - vb = q->bufs[buffer];
>>> -
>>> /*
>>> * MMAP requires page_aligned buffers.
>>> * The buffer length was page_aligned at __vb2_buf_mem_alloc(),
>>> @@ -2368,7 +2367,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
>>> if (ret)
>>> return ret;
>>> - dprintk(q, 3, "buffer %d, plane %d successfully mapped\n", buffer, plane);
>>> + dprintk(q, 3, "buffer %u, plane %d successfully mapped\n", vb->index, plane);
>>> return 0;
>>> }
>>> EXPORT_SYMBOL_GPL(vb2_mmap);
>>> @@ -2382,7 +2381,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
>>> {
>>> unsigned long offset = pgoff << PAGE_SHIFT;
>>> struct vb2_buffer *vb;
>>> - unsigned int buffer, plane;
>>> + unsigned int plane;
>>> void *vaddr;
>>> int ret;
>>> @@ -2392,12 +2391,10 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
>>> * Find the plane corresponding to the offset passed by userspace. This
>>> * will return an error if not MEMORY_MMAP or file I/O is in progress.
>>> */
>>> - ret = __find_plane_by_offset(q, offset, &buffer, &plane);
>>> + ret = __find_plane_by_offset(q, offset, &vb, &plane);
>>> if (ret)
>>> goto unlock;
>>> - vb = q->bufs[buffer];
>>> -
>>> vaddr = vb2_plane_vaddr(vb, plane);
>>> mutex_unlock(&q->mmap_lock);
>>> return vaddr ? (unsigned long)vaddr : -EINVAL;
>>> --
>>> 2.39.2
>>>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 52/56] media: core: Add bitmap manage bufs array entries
2023-10-31 16:31 ` Benjamin Gaignard
(?)
@ 2023-11-08 10:44 ` Tomasz Figa
-1 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-08 10:44 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:31:00PM +0100, Benjamin Gaignard wrote:
> Add a bitmap field to know which of bufs array entries are
> used or not.
> Remove no more used num_buffers field from queue structure.
> Use bitmap_find_next_zero_area() to find the first possible
> range when creating new buffers to fill the gaps.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 42 +++++++++++++++----
> include/media/videobuf2-core.h | 15 ++++---
> 2 files changed, 42 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 2c8cf479a962..6e88406fcae9 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -416,11 +416,12 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
> */
> static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
> {
> - WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
> + WARN_ON(index >= q->max_num_buffers || test_bit(index, q->bufs_bitmap));
>
> q->bufs[index] = vb;
> vb->index = index;
> vb->vb2_queue = q;
> + set_bit(index, q->bufs_bitmap);
> }
>
> /**
> @@ -429,6 +430,7 @@ static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, uns
> */
> static void vb2_queue_remove_buffer(struct vb2_buffer *vb)
> {
> + clear_bit(vb->index, vb->vb2_queue->bufs_bitmap);
> vb->vb2_queue->bufs[vb->index] = NULL;
> vb->vb2_queue = NULL;
> }
> @@ -450,11 +452,12 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> unsigned long index;
> int ret;
>
> - /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
> + /* Ensure that vb2_get_num_buffers(q) + num_buffers is no more than q->max_num_buffers */
> num_buffers = min_t(unsigned int, num_buffers,
> q->max_num_buffers - vb2_get_num_buffers(q));
>
> - index = vb2_get_num_buffers(q);
> + index = bitmap_find_next_zero_area(q->bufs_bitmap, q->max_num_buffers,
> + 0, num_buffers, 0);
>
> *first_index = index;
>
> @@ -656,7 +659,6 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
> kfree(vb);
> }
>
> - q->num_buffers -= buffers;
> if (!vb2_get_num_buffers(q)) {
> q->memory = VB2_MEMORY_UNKNOWN;
> INIT_LIST_HEAD(&q->queued_list);
> @@ -874,6 +876,14 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
> q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
> if (!q->bufs)
> ret = -ENOMEM;
> +
> + if (!q->bufs_bitmap)
> + q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
> + if (!q->bufs_bitmap) {
> + ret = -ENOMEM;
> + kfree(q->bufs);
> + q->bufs = NULL;
> + }
> q->memory = memory;
> mutex_unlock(&q->mmap_lock);
> if (ret)
> @@ -943,7 +953,6 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
> }
>
> mutex_lock(&q->mmap_lock);
> - q->num_buffers = allocated_buffers;
>
> if (ret < 0) {
> /*
> @@ -970,6 +979,10 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
> mutex_lock(&q->mmap_lock);
> q->memory = VB2_MEMORY_UNKNOWN;
> mutex_unlock(&q->mmap_lock);
> + kfree(q->bufs);
> + q->bufs = NULL;
> + bitmap_free(q->bufs_bitmap);
> + q->bufs_bitmap = NULL;
> return ret;
> }
> EXPORT_SYMBOL_GPL(vb2_core_reqbufs);
> @@ -1006,9 +1019,19 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> q->memory = memory;
> if (!q->bufs)
> q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
> - if (!q->bufs)
> + if (!q->bufs) {
> ret = -ENOMEM;
> + goto unlock;
> + }
> + if (!q->bufs_bitmap)
> + q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
Same as with the kcalloc(). Why not just allocate this in the core code,
e.g. vb2_core_queue_init()?
Actually, is it because we want to avoid allocating
resources early, before the need to actually use the vb2 queue?
If so, could this go to some other core function that runs later, e.g. __vb2_queue_alloc()?
> + if (!q->bufs_bitmap) {
> + ret = -ENOMEM;
> + kfree(q->bufs);
> + q->bufs = NULL;
> + }
> mutex_unlock(&q->mmap_lock);
> +unlock:
> if (ret)
> return ret;
> q->waiting_for_buffers = !q->is_output;
> @@ -1070,7 +1093,6 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> }
>
> mutex_lock(&q->mmap_lock);
> - q->num_buffers += allocated_buffers;
>
> if (ret < 0) {
> /*
> @@ -2549,7 +2571,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
> __vb2_queue_free(q, q->max_num_buffers);
> kfree(q->bufs);
> q->bufs = NULL;
> - q->num_buffers = 0;
> + bitmap_free(q->bufs_bitmap);
> + q->bufs_bitmap = NULL;
> +
> mutex_unlock(&q->mmap_lock);
> }
> EXPORT_SYMBOL_GPL(vb2_core_queue_release);
> @@ -2904,7 +2928,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
> * Check if we need to dequeue the buffer.
> */
> index = fileio->cur_index;
> - if (index >= q->num_buffers) {
> + if (!test_bit(index, q->bufs_bitmap)) {
I don't like this low level manipulation of queue internals here (after all
the work other patches did to use helpers). Why not just keep
vb2_get_num_buffers() here?
> struct vb2_buffer *b;
>
> /*
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index 6986ff4b77cd..288477075a0e 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -346,7 +346,7 @@ struct vb2_buffer {
> * describes the requested number of planes and sizes\[\]
> * contains the requested plane sizes. In this case
> * \*num_buffers are being allocated additionally to
> - * q->num_buffers. If either \*num_planes or the requested
> + * queue buffers. If either \*num_planes or the requested
Perhaps "the buffers already in the queue"?
> * sizes are invalid callback must return %-EINVAL.
> * @wait_prepare: release any locks taken while calling vb2 functions;
> * it is called before an ioctl needs to wait for a new
> @@ -557,7 +557,7 @@ struct vb2_buf_ops {
> * @memory: current memory type used
> * @dma_dir: DMA mapping direction.
> * @bufs: videobuf2 buffer structures
> - * @num_buffers: number of allocated/used buffers
> + * @bufs_bitmap: bitmap to manage bufs entries.
Perhaps "bitmap tracking whether each bufs[] entry is used"?
> * @max_num_buffers: upper limit of number of allocated/used buffers
> * @queued_list: list of buffers currently queued from userspace
> * @queued_count: number of buffers queued and ready for streaming.
> @@ -621,7 +621,7 @@ struct vb2_queue {
> unsigned int memory;
> enum dma_data_direction dma_dir;
> struct vb2_buffer **bufs;
> - unsigned int num_buffers;
> + unsigned long *bufs_bitmap;
> unsigned int max_num_buffers;
>
> struct list_head queued_list;
> @@ -1150,7 +1150,10 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
> */
> static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
> {
> - return q->num_buffers;
> + if (!q->bufs_bitmap)
> + return 0;
> +
> + return bitmap_weight(q->bufs_bitmap, q->max_num_buffers);
Hmm, could we just cache the number of buffers we have, so that we don't
have to go over the entire bitmap every time? (Basically just keep the
code that we had for handling q->num_buffers before this patch.)
> }
>
> /**
> @@ -1253,13 +1256,13 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
> static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
> unsigned int index)
> {
> - if (!q->bufs)
> + if (!q->bufs_bitmap)
> return NULL;
>
> if (index >= q->max_num_buffers)
> return NULL;
>
> - if (index < q->num_buffers)
> + if (test_bit(index, q->bufs_bitmap))
Aha, I see why we need the extra condition above now. Perhaps it should've
been added in this patch instead?
> return q->bufs[index];
> return NULL;
> }
> --
> 2.39.2
>
Best regards,
Tomasz
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 52/56] media: core: Add bitmap manage bufs array entries
@ 2023-11-08 10:44 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-08 10:44 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:31:00PM +0100, Benjamin Gaignard wrote:
> Add a bitmap field to know which of bufs array entries are
> used or not.
> Remove no more used num_buffers field from queue structure.
> Use bitmap_find_next_zero_area() to find the first possible
> range when creating new buffers to fill the gaps.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 42 +++++++++++++++----
> include/media/videobuf2-core.h | 15 ++++---
> 2 files changed, 42 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 2c8cf479a962..6e88406fcae9 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -416,11 +416,12 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
> */
> static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
> {
> - WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
> + WARN_ON(index >= q->max_num_buffers || test_bit(index, q->bufs_bitmap));
>
> q->bufs[index] = vb;
> vb->index = index;
> vb->vb2_queue = q;
> + set_bit(index, q->bufs_bitmap);
> }
>
> /**
> @@ -429,6 +430,7 @@ static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, uns
> */
> static void vb2_queue_remove_buffer(struct vb2_buffer *vb)
> {
> + clear_bit(vb->index, vb->vb2_queue->bufs_bitmap);
> vb->vb2_queue->bufs[vb->index] = NULL;
> vb->vb2_queue = NULL;
> }
> @@ -450,11 +452,12 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> unsigned long index;
> int ret;
>
> - /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
> + /* Ensure that vb2_get_num_buffers(q) + num_buffers is no more than q->max_num_buffers */
> num_buffers = min_t(unsigned int, num_buffers,
> q->max_num_buffers - vb2_get_num_buffers(q));
>
> - index = vb2_get_num_buffers(q);
> + index = bitmap_find_next_zero_area(q->bufs_bitmap, q->max_num_buffers,
> + 0, num_buffers, 0);
>
> *first_index = index;
>
> @@ -656,7 +659,6 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
> kfree(vb);
> }
>
> - q->num_buffers -= buffers;
> if (!vb2_get_num_buffers(q)) {
> q->memory = VB2_MEMORY_UNKNOWN;
> INIT_LIST_HEAD(&q->queued_list);
> @@ -874,6 +876,14 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
> q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
> if (!q->bufs)
> ret = -ENOMEM;
> +
> + if (!q->bufs_bitmap)
> + q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
> + if (!q->bufs_bitmap) {
> + ret = -ENOMEM;
> + kfree(q->bufs);
> + q->bufs = NULL;
> + }
> q->memory = memory;
> mutex_unlock(&q->mmap_lock);
> if (ret)
> @@ -943,7 +953,6 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
> }
>
> mutex_lock(&q->mmap_lock);
> - q->num_buffers = allocated_buffers;
>
> if (ret < 0) {
> /*
> @@ -970,6 +979,10 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
> mutex_lock(&q->mmap_lock);
> q->memory = VB2_MEMORY_UNKNOWN;
> mutex_unlock(&q->mmap_lock);
> + kfree(q->bufs);
> + q->bufs = NULL;
> + bitmap_free(q->bufs_bitmap);
> + q->bufs_bitmap = NULL;
> return ret;
> }
> EXPORT_SYMBOL_GPL(vb2_core_reqbufs);
> @@ -1006,9 +1019,19 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> q->memory = memory;
> if (!q->bufs)
> q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
> - if (!q->bufs)
> + if (!q->bufs) {
> ret = -ENOMEM;
> + goto unlock;
> + }
> + if (!q->bufs_bitmap)
> + q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
Same as with the kcalloc(). Why not just allocate this in the core code,
e.g. vb2_core_queue_init()?
Actually, is it because we want to avoid allocating
resources early, before the need to actually use the vb2 queue?
If so, could this go to some other core function that runs later, e.g. __vb2_queue_alloc()?
> + if (!q->bufs_bitmap) {
> + ret = -ENOMEM;
> + kfree(q->bufs);
> + q->bufs = NULL;
> + }
> mutex_unlock(&q->mmap_lock);
> +unlock:
> if (ret)
> return ret;
> q->waiting_for_buffers = !q->is_output;
> @@ -1070,7 +1093,6 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> }
>
> mutex_lock(&q->mmap_lock);
> - q->num_buffers += allocated_buffers;
>
> if (ret < 0) {
> /*
> @@ -2549,7 +2571,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
> __vb2_queue_free(q, q->max_num_buffers);
> kfree(q->bufs);
> q->bufs = NULL;
> - q->num_buffers = 0;
> + bitmap_free(q->bufs_bitmap);
> + q->bufs_bitmap = NULL;
> +
> mutex_unlock(&q->mmap_lock);
> }
> EXPORT_SYMBOL_GPL(vb2_core_queue_release);
> @@ -2904,7 +2928,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
> * Check if we need to dequeue the buffer.
> */
> index = fileio->cur_index;
> - if (index >= q->num_buffers) {
> + if (!test_bit(index, q->bufs_bitmap)) {
I don't like this low level manipulation of queue internals here (after all
the work other patches did to use helpers). Why not just keep
vb2_get_num_buffers() here?
> struct vb2_buffer *b;
>
> /*
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index 6986ff4b77cd..288477075a0e 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -346,7 +346,7 @@ struct vb2_buffer {
> * describes the requested number of planes and sizes\[\]
> * contains the requested plane sizes. In this case
> * \*num_buffers are being allocated additionally to
> - * q->num_buffers. If either \*num_planes or the requested
> + * queue buffers. If either \*num_planes or the requested
Perhaps "the buffers already in the queue"?
> * sizes are invalid callback must return %-EINVAL.
> * @wait_prepare: release any locks taken while calling vb2 functions;
> * it is called before an ioctl needs to wait for a new
> @@ -557,7 +557,7 @@ struct vb2_buf_ops {
> * @memory: current memory type used
> * @dma_dir: DMA mapping direction.
> * @bufs: videobuf2 buffer structures
> - * @num_buffers: number of allocated/used buffers
> + * @bufs_bitmap: bitmap to manage bufs entries.
Perhaps "bitmap tracking whether each bufs[] entry is used"?
> * @max_num_buffers: upper limit of number of allocated/used buffers
> * @queued_list: list of buffers currently queued from userspace
> * @queued_count: number of buffers queued and ready for streaming.
> @@ -621,7 +621,7 @@ struct vb2_queue {
> unsigned int memory;
> enum dma_data_direction dma_dir;
> struct vb2_buffer **bufs;
> - unsigned int num_buffers;
> + unsigned long *bufs_bitmap;
> unsigned int max_num_buffers;
>
> struct list_head queued_list;
> @@ -1150,7 +1150,10 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
> */
> static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
> {
> - return q->num_buffers;
> + if (!q->bufs_bitmap)
> + return 0;
> +
> + return bitmap_weight(q->bufs_bitmap, q->max_num_buffers);
Hmm, could we just cache the number of buffers we have, so that we don't
have to go over the entire bitmap every time? (Basically just keep the
code that we had for handling q->num_buffers before this patch.)
> }
>
> /**
> @@ -1253,13 +1256,13 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
> static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
> unsigned int index)
> {
> - if (!q->bufs)
> + if (!q->bufs_bitmap)
> return NULL;
>
> if (index >= q->max_num_buffers)
> return NULL;
>
> - if (index < q->num_buffers)
> + if (test_bit(index, q->bufs_bitmap))
Aha, I see why we need the extra condition above now. Perhaps it should've
been added in this patch instead?
> return q->bufs[index];
> return NULL;
> }
> --
> 2.39.2
>
Best regards,
Tomasz
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 52/56] media: core: Add bitmap manage bufs array entries
@ 2023-11-08 10:44 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-08 10:44 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:31:00PM +0100, Benjamin Gaignard wrote:
> Add a bitmap field to know which of bufs array entries are
> used or not.
> Remove no more used num_buffers field from queue structure.
> Use bitmap_find_next_zero_area() to find the first possible
> range when creating new buffers to fill the gaps.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 42 +++++++++++++++----
> include/media/videobuf2-core.h | 15 ++++---
> 2 files changed, 42 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 2c8cf479a962..6e88406fcae9 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -416,11 +416,12 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
> */
> static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
> {
> - WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
> + WARN_ON(index >= q->max_num_buffers || test_bit(index, q->bufs_bitmap));
>
> q->bufs[index] = vb;
> vb->index = index;
> vb->vb2_queue = q;
> + set_bit(index, q->bufs_bitmap);
> }
>
> /**
> @@ -429,6 +430,7 @@ static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, uns
> */
> static void vb2_queue_remove_buffer(struct vb2_buffer *vb)
> {
> + clear_bit(vb->index, vb->vb2_queue->bufs_bitmap);
> vb->vb2_queue->bufs[vb->index] = NULL;
> vb->vb2_queue = NULL;
> }
> @@ -450,11 +452,12 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> unsigned long index;
> int ret;
>
> - /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
> + /* Ensure that vb2_get_num_buffers(q) + num_buffers is no more than q->max_num_buffers */
> num_buffers = min_t(unsigned int, num_buffers,
> q->max_num_buffers - vb2_get_num_buffers(q));
>
> - index = vb2_get_num_buffers(q);
> + index = bitmap_find_next_zero_area(q->bufs_bitmap, q->max_num_buffers,
> + 0, num_buffers, 0);
>
> *first_index = index;
>
> @@ -656,7 +659,6 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
> kfree(vb);
> }
>
> - q->num_buffers -= buffers;
> if (!vb2_get_num_buffers(q)) {
> q->memory = VB2_MEMORY_UNKNOWN;
> INIT_LIST_HEAD(&q->queued_list);
> @@ -874,6 +876,14 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
> q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
> if (!q->bufs)
> ret = -ENOMEM;
> +
> + if (!q->bufs_bitmap)
> + q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
> + if (!q->bufs_bitmap) {
> + ret = -ENOMEM;
> + kfree(q->bufs);
> + q->bufs = NULL;
> + }
> q->memory = memory;
> mutex_unlock(&q->mmap_lock);
> if (ret)
> @@ -943,7 +953,6 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
> }
>
> mutex_lock(&q->mmap_lock);
> - q->num_buffers = allocated_buffers;
>
> if (ret < 0) {
> /*
> @@ -970,6 +979,10 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
> mutex_lock(&q->mmap_lock);
> q->memory = VB2_MEMORY_UNKNOWN;
> mutex_unlock(&q->mmap_lock);
> + kfree(q->bufs);
> + q->bufs = NULL;
> + bitmap_free(q->bufs_bitmap);
> + q->bufs_bitmap = NULL;
> return ret;
> }
> EXPORT_SYMBOL_GPL(vb2_core_reqbufs);
> @@ -1006,9 +1019,19 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> q->memory = memory;
> if (!q->bufs)
> q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
> - if (!q->bufs)
> + if (!q->bufs) {
> ret = -ENOMEM;
> + goto unlock;
> + }
> + if (!q->bufs_bitmap)
> + q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
Same as with the kcalloc(). Why not just allocate this in the core code,
e.g. vb2_core_queue_init()?
Actually, is it because we want to avoid allocating
resources early, before the need to actually use the vb2 queue?
If so, could this go to some other core function that runs later, e.g. __vb2_queue_alloc()?
> + if (!q->bufs_bitmap) {
> + ret = -ENOMEM;
> + kfree(q->bufs);
> + q->bufs = NULL;
> + }
> mutex_unlock(&q->mmap_lock);
> +unlock:
> if (ret)
> return ret;
> q->waiting_for_buffers = !q->is_output;
> @@ -1070,7 +1093,6 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> }
>
> mutex_lock(&q->mmap_lock);
> - q->num_buffers += allocated_buffers;
>
> if (ret < 0) {
> /*
> @@ -2549,7 +2571,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
> __vb2_queue_free(q, q->max_num_buffers);
> kfree(q->bufs);
> q->bufs = NULL;
> - q->num_buffers = 0;
> + bitmap_free(q->bufs_bitmap);
> + q->bufs_bitmap = NULL;
> +
> mutex_unlock(&q->mmap_lock);
> }
> EXPORT_SYMBOL_GPL(vb2_core_queue_release);
> @@ -2904,7 +2928,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
> * Check if we need to dequeue the buffer.
> */
> index = fileio->cur_index;
> - if (index >= q->num_buffers) {
> + if (!test_bit(index, q->bufs_bitmap)) {
I don't like this low level manipulation of queue internals here (after all
the work other patches did to use helpers). Why not just keep
vb2_get_num_buffers() here?
> struct vb2_buffer *b;
>
> /*
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index 6986ff4b77cd..288477075a0e 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -346,7 +346,7 @@ struct vb2_buffer {
> * describes the requested number of planes and sizes\[\]
> * contains the requested plane sizes. In this case
> * \*num_buffers are being allocated additionally to
> - * q->num_buffers. If either \*num_planes or the requested
> + * queue buffers. If either \*num_planes or the requested
Perhaps "the buffers already in the queue"?
> * sizes are invalid callback must return %-EINVAL.
> * @wait_prepare: release any locks taken while calling vb2 functions;
> * it is called before an ioctl needs to wait for a new
> @@ -557,7 +557,7 @@ struct vb2_buf_ops {
> * @memory: current memory type used
> * @dma_dir: DMA mapping direction.
> * @bufs: videobuf2 buffer structures
> - * @num_buffers: number of allocated/used buffers
> + * @bufs_bitmap: bitmap to manage bufs entries.
Perhaps "bitmap tracking whether each bufs[] entry is used"?
> * @max_num_buffers: upper limit of number of allocated/used buffers
> * @queued_list: list of buffers currently queued from userspace
> * @queued_count: number of buffers queued and ready for streaming.
> @@ -621,7 +621,7 @@ struct vb2_queue {
> unsigned int memory;
> enum dma_data_direction dma_dir;
> struct vb2_buffer **bufs;
> - unsigned int num_buffers;
> + unsigned long *bufs_bitmap;
> unsigned int max_num_buffers;
>
> struct list_head queued_list;
> @@ -1150,7 +1150,10 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
> */
> static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
> {
> - return q->num_buffers;
> + if (!q->bufs_bitmap)
> + return 0;
> +
> + return bitmap_weight(q->bufs_bitmap, q->max_num_buffers);
Hmm, could we just cache the number of buffers we have, so that we don't
have to go over the entire bitmap every time? (Basically just keep the
code that we had for handling q->num_buffers before this patch.)
> }
>
> /**
> @@ -1253,13 +1256,13 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
> static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
> unsigned int index)
> {
> - if (!q->bufs)
> + if (!q->bufs_bitmap)
> return NULL;
>
> if (index >= q->max_num_buffers)
> return NULL;
>
> - if (index < q->num_buffers)
> + if (test_bit(index, q->bufs_bitmap))
Aha, I see why we need the extra condition above now. Perhaps it should've
been added in this patch instead?
> return q->bufs[index];
> return NULL;
> }
> --
> 2.39.2
>
Best regards,
Tomasz
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 08/56] media: videobuf2: Use vb2_get_num_buffers() helper
2023-11-08 9:42 ` Tomasz Figa
(?)
@ 2023-11-08 13:22 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-08 13:22 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 08/11/2023 à 10:42, Tomasz Figa a écrit :
> On Tue, Oct 31, 2023 at 05:30:16PM +0100, Benjamin Gaignard wrote:
>> Stop using queue num_buffers field directly, instead use
>> vb2_get_num_buffers().
>> This prepares for the future 'delete buffers' feature where there are
>> holes in the buffer indices.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> .../media/common/videobuf2/videobuf2-core.c | 92 +++++++++++--------
>> .../media/common/videobuf2/videobuf2-v4l2.c | 4 +-
>> 2 files changed, 54 insertions(+), 42 deletions(-)
>>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index b406a30a9b35..c5c5ae4d213d 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -444,13 +444,14 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
>> unsigned int num_buffers, unsigned int num_planes,
>> const unsigned plane_sizes[VB2_MAX_PLANES])
>> {
>> + unsigned int q_num_buffers = vb2_get_num_buffers(q);
>> unsigned int buffer, plane;
>> struct vb2_buffer *vb;
>> int ret;
>>
>> /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
>> num_buffers = min_t(unsigned int, num_buffers,
>> - VB2_MAX_FRAME - q->num_buffers);
>> + VB2_MAX_FRAME - q_num_buffers);
> I guess it's safe in this specific situation, but was there any reason
> behind not just calling vb2_get_num_buffers() directly here?
>
>>
>> for (buffer = 0; buffer < num_buffers; ++buffer) {
>> /* Allocate vb2 buffer structures */
>> @@ -470,7 +471,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
>> vb->planes[plane].min_length = plane_sizes[plane];
>> }
>>
>> - vb2_queue_add_buffer(q, vb, q->num_buffers + buffer);
>> + vb2_queue_add_buffer(q, vb, q_num_buffers + buffer);
> In this case it should also be fine, but actually now this is a loop and if
> somone doesn't know what the other code in the loop does, one could be
> concerned that the num buffers actually could have changed, but we still
> use the cached one that we got at the beginning of the function.
>
> (Ideally I'd imagine vb2_queue_add_buffer() to append the buffer
> at the end of the queue and increment the num_buffers internally, but it
> doesn't have to happen now, as this series is already quite complex...)
That will be the case later in the series when I replace num_buffers field
by a bitmap. Until that I prefer to limit the changes in this loop.
>
>> call_void_bufop(q, init_buffer, vb);
>>
>> /* Allocate video buffer memory for the MMAP type */
> [snip]
>> @@ -2513,7 +2519,8 @@ void vb2_core_queue_release(struct vb2_queue *q)
>> __vb2_cleanup_fileio(q);
>> __vb2_queue_cancel(q);
>> mutex_lock(&q->mmap_lock);
>> - __vb2_queue_free(q, q->num_buffers);
>> + __vb2_queue_free(q, vb2_get_num_buffers(q));
>> + q->num_buffers = 0;
> Unrelated change?
No because I found a case where q->num_buffers wasn't correctly reset while testing.
>
>> mutex_unlock(&q->mmap_lock);
>> }
>> EXPORT_SYMBOL_GPL(vb2_core_queue_release);
>> @@ -2542,7 +2549,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
>> /*
>> * Start file I/O emulator only if streaming API has not been used yet.
>> */
>> - if (q->num_buffers == 0 && !vb2_fileio_is_active(q)) {
>> + if (vb2_get_num_buffers(q) == 0 && !vb2_fileio_is_active(q)) {
>> if (!q->is_output && (q->io_modes & VB2_READ) &&
>> (req_events & (EPOLLIN | EPOLLRDNORM))) {
>> if (__vb2_init_fileio(q, 1))
>> @@ -2580,7 +2587,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
>> * For output streams you can call write() as long as there are fewer
>> * buffers queued than there are buffers available.
>> */
>> - if (q->is_output && q->fileio && q->queued_count < q->num_buffers)
>> + if (q->is_output && q->fileio && q->queued_count < vb2_get_num_buffers(q))
>> return EPOLLOUT | EPOLLWRNORM;
>>
>> if (list_empty(&q->done_list)) {
>> @@ -2629,8 +2636,8 @@ struct vb2_fileio_buf {
>> * struct vb2_fileio_data - queue context used by file io emulator
>> *
>> * @cur_index: the index of the buffer currently being read from or
>> - * written to. If equal to q->num_buffers then a new buffer
>> - * must be dequeued.
>> + * written to. If equal to number of already queued buffers
>> + * then a new buffer must be dequeued.
> Hmm, that's a significant meaning change compared to the original text. Is
> it indended?
Does "If equal to number of buffers in the vb2_queue then a new buffer must be dequeued."
sound better for you ?
>
>> * @initial_index: in the read() case all buffers are queued up immediately
>> * in __vb2_init_fileio() and __vb2_perform_fileio() just cycles
>> * buffers. However, in the write() case no buffers are initially
>> @@ -2640,7 +2647,7 @@ struct vb2_fileio_buf {
>> * buffers. This means that initially __vb2_perform_fileio()
>> * needs to know what buffer index to use when it is queuing up
>> * the buffers for the first time. That initial index is stored
>> - * in this field. Once it is equal to q->num_buffers all
>> + * in this field. Once it is equal to num_buffers all
> It's not clear what num_buffers means here. Would it make sense to instead
> say "number of buffers in the vb2_queue"?
Yes I will change that
>
>> * available buffers have been queued and __vb2_perform_fileio()
>> * should start the normal dequeue/queue cycle.
>> *
>> @@ -2690,7 +2697,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
>> /*
>> * Check if streaming api has not been already activated.
>> */
>> - if (q->streaming || q->num_buffers > 0)
>> + if (q->streaming || vb2_get_num_buffers(q) > 0)
>> return -EBUSY;
>>
>> /*
>> @@ -2740,7 +2747,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
>> /*
>> * Get kernel address of each buffer.
>> */
>> - for (i = 0; i < q->num_buffers; i++) {
>> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
>> /* vb can never be NULL when using fileio. */
>> vb = vb2_get_buffer(q, i);
>>
>> @@ -2759,18 +2766,23 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
>> /*
>> * Queue all buffers.
>> */
>> - for (i = 0; i < q->num_buffers; i++) {
>> - ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
>> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
>> + struct vb2_buffer *vb2 = vb2_get_buffer(q, i);
>> +
>> + if (!vb2)
>> + continue;
>> +
>> + ret = vb2_core_qbuf(q, vb2, NULL, NULL);
>> if (ret)
>> goto err_reqbufs;
>> fileio->bufs[i].queued = 1;
>> }
> Doesn't this part belong to the previous patch that changes q->bufs[x] to
> vb2_get_buffer()?
Yes I will change that too.
>
>> /*
>> * All buffers have been queued, so mark that by setting
>> - * initial_index to q->num_buffers
>> + * initial_index to num_buffers
> What num_buffers?
I will use your wording: "the number of buffers in the vb2_queue"
>
>> */
>> - fileio->initial_index = q->num_buffers;
>> - fileio->cur_index = q->num_buffers;
>> + fileio->initial_index = vb2_get_num_buffers(q);
>> + fileio->cur_index = fileio->initial_index;
>> }
>>
>> /*
>> @@ -2964,12 +2976,12 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
>> * If we are queuing up buffers for the first time, then
>> * increase initial_index by one.
>> */
>> - if (fileio->initial_index < q->num_buffers)
>> + if (fileio->initial_index < vb2_get_num_buffers(q))
>> fileio->initial_index++;
>> /*
>> * The next buffer to use is either a buffer that's going to be
>> - * queued for the first time (initial_index < q->num_buffers)
>> - * or it is equal to q->num_buffers, meaning that the next
>> + * queued for the first time (initial_index < num_buffers)
>> + * or it is equal to num_buffers, meaning that the next
> What num_buffers?
Same here
>
> Best regards,
> Tomasz
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 08/56] media: videobuf2: Use vb2_get_num_buffers() helper
@ 2023-11-08 13:22 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-08 13:22 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 08/11/2023 à 10:42, Tomasz Figa a écrit :
> On Tue, Oct 31, 2023 at 05:30:16PM +0100, Benjamin Gaignard wrote:
>> Stop using queue num_buffers field directly, instead use
>> vb2_get_num_buffers().
>> This prepares for the future 'delete buffers' feature where there are
>> holes in the buffer indices.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> .../media/common/videobuf2/videobuf2-core.c | 92 +++++++++++--------
>> .../media/common/videobuf2/videobuf2-v4l2.c | 4 +-
>> 2 files changed, 54 insertions(+), 42 deletions(-)
>>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index b406a30a9b35..c5c5ae4d213d 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -444,13 +444,14 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
>> unsigned int num_buffers, unsigned int num_planes,
>> const unsigned plane_sizes[VB2_MAX_PLANES])
>> {
>> + unsigned int q_num_buffers = vb2_get_num_buffers(q);
>> unsigned int buffer, plane;
>> struct vb2_buffer *vb;
>> int ret;
>>
>> /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
>> num_buffers = min_t(unsigned int, num_buffers,
>> - VB2_MAX_FRAME - q->num_buffers);
>> + VB2_MAX_FRAME - q_num_buffers);
> I guess it's safe in this specific situation, but was there any reason
> behind not just calling vb2_get_num_buffers() directly here?
>
>>
>> for (buffer = 0; buffer < num_buffers; ++buffer) {
>> /* Allocate vb2 buffer structures */
>> @@ -470,7 +471,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
>> vb->planes[plane].min_length = plane_sizes[plane];
>> }
>>
>> - vb2_queue_add_buffer(q, vb, q->num_buffers + buffer);
>> + vb2_queue_add_buffer(q, vb, q_num_buffers + buffer);
> In this case it should also be fine, but actually now this is a loop and if
> somone doesn't know what the other code in the loop does, one could be
> concerned that the num buffers actually could have changed, but we still
> use the cached one that we got at the beginning of the function.
>
> (Ideally I'd imagine vb2_queue_add_buffer() to append the buffer
> at the end of the queue and increment the num_buffers internally, but it
> doesn't have to happen now, as this series is already quite complex...)
That will be the case later in the series when I replace num_buffers field
by a bitmap. Until that I prefer to limit the changes in this loop.
>
>> call_void_bufop(q, init_buffer, vb);
>>
>> /* Allocate video buffer memory for the MMAP type */
> [snip]
>> @@ -2513,7 +2519,8 @@ void vb2_core_queue_release(struct vb2_queue *q)
>> __vb2_cleanup_fileio(q);
>> __vb2_queue_cancel(q);
>> mutex_lock(&q->mmap_lock);
>> - __vb2_queue_free(q, q->num_buffers);
>> + __vb2_queue_free(q, vb2_get_num_buffers(q));
>> + q->num_buffers = 0;
> Unrelated change?
No because I found a case where q->num_buffers wasn't correctly reset while testing.
>
>> mutex_unlock(&q->mmap_lock);
>> }
>> EXPORT_SYMBOL_GPL(vb2_core_queue_release);
>> @@ -2542,7 +2549,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
>> /*
>> * Start file I/O emulator only if streaming API has not been used yet.
>> */
>> - if (q->num_buffers == 0 && !vb2_fileio_is_active(q)) {
>> + if (vb2_get_num_buffers(q) == 0 && !vb2_fileio_is_active(q)) {
>> if (!q->is_output && (q->io_modes & VB2_READ) &&
>> (req_events & (EPOLLIN | EPOLLRDNORM))) {
>> if (__vb2_init_fileio(q, 1))
>> @@ -2580,7 +2587,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
>> * For output streams you can call write() as long as there are fewer
>> * buffers queued than there are buffers available.
>> */
>> - if (q->is_output && q->fileio && q->queued_count < q->num_buffers)
>> + if (q->is_output && q->fileio && q->queued_count < vb2_get_num_buffers(q))
>> return EPOLLOUT | EPOLLWRNORM;
>>
>> if (list_empty(&q->done_list)) {
>> @@ -2629,8 +2636,8 @@ struct vb2_fileio_buf {
>> * struct vb2_fileio_data - queue context used by file io emulator
>> *
>> * @cur_index: the index of the buffer currently being read from or
>> - * written to. If equal to q->num_buffers then a new buffer
>> - * must be dequeued.
>> + * written to. If equal to number of already queued buffers
>> + * then a new buffer must be dequeued.
> Hmm, that's a significant meaning change compared to the original text. Is
> it indended?
Does "If equal to number of buffers in the vb2_queue then a new buffer must be dequeued."
sound better for you ?
>
>> * @initial_index: in the read() case all buffers are queued up immediately
>> * in __vb2_init_fileio() and __vb2_perform_fileio() just cycles
>> * buffers. However, in the write() case no buffers are initially
>> @@ -2640,7 +2647,7 @@ struct vb2_fileio_buf {
>> * buffers. This means that initially __vb2_perform_fileio()
>> * needs to know what buffer index to use when it is queuing up
>> * the buffers for the first time. That initial index is stored
>> - * in this field. Once it is equal to q->num_buffers all
>> + * in this field. Once it is equal to num_buffers all
> It's not clear what num_buffers means here. Would it make sense to instead
> say "number of buffers in the vb2_queue"?
Yes I will change that
>
>> * available buffers have been queued and __vb2_perform_fileio()
>> * should start the normal dequeue/queue cycle.
>> *
>> @@ -2690,7 +2697,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
>> /*
>> * Check if streaming api has not been already activated.
>> */
>> - if (q->streaming || q->num_buffers > 0)
>> + if (q->streaming || vb2_get_num_buffers(q) > 0)
>> return -EBUSY;
>>
>> /*
>> @@ -2740,7 +2747,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
>> /*
>> * Get kernel address of each buffer.
>> */
>> - for (i = 0; i < q->num_buffers; i++) {
>> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
>> /* vb can never be NULL when using fileio. */
>> vb = vb2_get_buffer(q, i);
>>
>> @@ -2759,18 +2766,23 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
>> /*
>> * Queue all buffers.
>> */
>> - for (i = 0; i < q->num_buffers; i++) {
>> - ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
>> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
>> + struct vb2_buffer *vb2 = vb2_get_buffer(q, i);
>> +
>> + if (!vb2)
>> + continue;
>> +
>> + ret = vb2_core_qbuf(q, vb2, NULL, NULL);
>> if (ret)
>> goto err_reqbufs;
>> fileio->bufs[i].queued = 1;
>> }
> Doesn't this part belong to the previous patch that changes q->bufs[x] to
> vb2_get_buffer()?
Yes I will change that too.
>
>> /*
>> * All buffers have been queued, so mark that by setting
>> - * initial_index to q->num_buffers
>> + * initial_index to num_buffers
> What num_buffers?
I will use your wording: "the number of buffers in the vb2_queue"
>
>> */
>> - fileio->initial_index = q->num_buffers;
>> - fileio->cur_index = q->num_buffers;
>> + fileio->initial_index = vb2_get_num_buffers(q);
>> + fileio->cur_index = fileio->initial_index;
>> }
>>
>> /*
>> @@ -2964,12 +2976,12 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
>> * If we are queuing up buffers for the first time, then
>> * increase initial_index by one.
>> */
>> - if (fileio->initial_index < q->num_buffers)
>> + if (fileio->initial_index < vb2_get_num_buffers(q))
>> fileio->initial_index++;
>> /*
>> * The next buffer to use is either a buffer that's going to be
>> - * queued for the first time (initial_index < q->num_buffers)
>> - * or it is equal to q->num_buffers, meaning that the next
>> + * queued for the first time (initial_index < num_buffers)
>> + * or it is equal to num_buffers, meaning that the next
> What num_buffers?
Same here
>
> Best regards,
> Tomasz
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 08/56] media: videobuf2: Use vb2_get_num_buffers() helper
@ 2023-11-08 13:22 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-08 13:22 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 08/11/2023 à 10:42, Tomasz Figa a écrit :
> On Tue, Oct 31, 2023 at 05:30:16PM +0100, Benjamin Gaignard wrote:
>> Stop using queue num_buffers field directly, instead use
>> vb2_get_num_buffers().
>> This prepares for the future 'delete buffers' feature where there are
>> holes in the buffer indices.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> .../media/common/videobuf2/videobuf2-core.c | 92 +++++++++++--------
>> .../media/common/videobuf2/videobuf2-v4l2.c | 4 +-
>> 2 files changed, 54 insertions(+), 42 deletions(-)
>>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index b406a30a9b35..c5c5ae4d213d 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -444,13 +444,14 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
>> unsigned int num_buffers, unsigned int num_planes,
>> const unsigned plane_sizes[VB2_MAX_PLANES])
>> {
>> + unsigned int q_num_buffers = vb2_get_num_buffers(q);
>> unsigned int buffer, plane;
>> struct vb2_buffer *vb;
>> int ret;
>>
>> /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
>> num_buffers = min_t(unsigned int, num_buffers,
>> - VB2_MAX_FRAME - q->num_buffers);
>> + VB2_MAX_FRAME - q_num_buffers);
> I guess it's safe in this specific situation, but was there any reason
> behind not just calling vb2_get_num_buffers() directly here?
>
>>
>> for (buffer = 0; buffer < num_buffers; ++buffer) {
>> /* Allocate vb2 buffer structures */
>> @@ -470,7 +471,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
>> vb->planes[plane].min_length = plane_sizes[plane];
>> }
>>
>> - vb2_queue_add_buffer(q, vb, q->num_buffers + buffer);
>> + vb2_queue_add_buffer(q, vb, q_num_buffers + buffer);
> In this case it should also be fine, but actually now this is a loop and if
> somone doesn't know what the other code in the loop does, one could be
> concerned that the num buffers actually could have changed, but we still
> use the cached one that we got at the beginning of the function.
>
> (Ideally I'd imagine vb2_queue_add_buffer() to append the buffer
> at the end of the queue and increment the num_buffers internally, but it
> doesn't have to happen now, as this series is already quite complex...)
That will be the case later in the series when I replace num_buffers field
by a bitmap. Until that I prefer to limit the changes in this loop.
>
>> call_void_bufop(q, init_buffer, vb);
>>
>> /* Allocate video buffer memory for the MMAP type */
> [snip]
>> @@ -2513,7 +2519,8 @@ void vb2_core_queue_release(struct vb2_queue *q)
>> __vb2_cleanup_fileio(q);
>> __vb2_queue_cancel(q);
>> mutex_lock(&q->mmap_lock);
>> - __vb2_queue_free(q, q->num_buffers);
>> + __vb2_queue_free(q, vb2_get_num_buffers(q));
>> + q->num_buffers = 0;
> Unrelated change?
No because I found a case where q->num_buffers wasn't correctly reset while testing.
>
>> mutex_unlock(&q->mmap_lock);
>> }
>> EXPORT_SYMBOL_GPL(vb2_core_queue_release);
>> @@ -2542,7 +2549,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
>> /*
>> * Start file I/O emulator only if streaming API has not been used yet.
>> */
>> - if (q->num_buffers == 0 && !vb2_fileio_is_active(q)) {
>> + if (vb2_get_num_buffers(q) == 0 && !vb2_fileio_is_active(q)) {
>> if (!q->is_output && (q->io_modes & VB2_READ) &&
>> (req_events & (EPOLLIN | EPOLLRDNORM))) {
>> if (__vb2_init_fileio(q, 1))
>> @@ -2580,7 +2587,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
>> * For output streams you can call write() as long as there are fewer
>> * buffers queued than there are buffers available.
>> */
>> - if (q->is_output && q->fileio && q->queued_count < q->num_buffers)
>> + if (q->is_output && q->fileio && q->queued_count < vb2_get_num_buffers(q))
>> return EPOLLOUT | EPOLLWRNORM;
>>
>> if (list_empty(&q->done_list)) {
>> @@ -2629,8 +2636,8 @@ struct vb2_fileio_buf {
>> * struct vb2_fileio_data - queue context used by file io emulator
>> *
>> * @cur_index: the index of the buffer currently being read from or
>> - * written to. If equal to q->num_buffers then a new buffer
>> - * must be dequeued.
>> + * written to. If equal to number of already queued buffers
>> + * then a new buffer must be dequeued.
> Hmm, that's a significant meaning change compared to the original text. Is
> it indended?
Does "If equal to number of buffers in the vb2_queue then a new buffer must be dequeued."
sound better for you ?
>
>> * @initial_index: in the read() case all buffers are queued up immediately
>> * in __vb2_init_fileio() and __vb2_perform_fileio() just cycles
>> * buffers. However, in the write() case no buffers are initially
>> @@ -2640,7 +2647,7 @@ struct vb2_fileio_buf {
>> * buffers. This means that initially __vb2_perform_fileio()
>> * needs to know what buffer index to use when it is queuing up
>> * the buffers for the first time. That initial index is stored
>> - * in this field. Once it is equal to q->num_buffers all
>> + * in this field. Once it is equal to num_buffers all
> It's not clear what num_buffers means here. Would it make sense to instead
> say "number of buffers in the vb2_queue"?
Yes I will change that
>
>> * available buffers have been queued and __vb2_perform_fileio()
>> * should start the normal dequeue/queue cycle.
>> *
>> @@ -2690,7 +2697,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
>> /*
>> * Check if streaming api has not been already activated.
>> */
>> - if (q->streaming || q->num_buffers > 0)
>> + if (q->streaming || vb2_get_num_buffers(q) > 0)
>> return -EBUSY;
>>
>> /*
>> @@ -2740,7 +2747,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
>> /*
>> * Get kernel address of each buffer.
>> */
>> - for (i = 0; i < q->num_buffers; i++) {
>> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
>> /* vb can never be NULL when using fileio. */
>> vb = vb2_get_buffer(q, i);
>>
>> @@ -2759,18 +2766,23 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
>> /*
>> * Queue all buffers.
>> */
>> - for (i = 0; i < q->num_buffers; i++) {
>> - ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
>> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
>> + struct vb2_buffer *vb2 = vb2_get_buffer(q, i);
>> +
>> + if (!vb2)
>> + continue;
>> +
>> + ret = vb2_core_qbuf(q, vb2, NULL, NULL);
>> if (ret)
>> goto err_reqbufs;
>> fileio->bufs[i].queued = 1;
>> }
> Doesn't this part belong to the previous patch that changes q->bufs[x] to
> vb2_get_buffer()?
Yes I will change that too.
>
>> /*
>> * All buffers have been queued, so mark that by setting
>> - * initial_index to q->num_buffers
>> + * initial_index to num_buffers
> What num_buffers?
I will use your wording: "the number of buffers in the vb2_queue"
>
>> */
>> - fileio->initial_index = q->num_buffers;
>> - fileio->cur_index = q->num_buffers;
>> + fileio->initial_index = vb2_get_num_buffers(q);
>> + fileio->cur_index = fileio->initial_index;
>> }
>>
>> /*
>> @@ -2964,12 +2976,12 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
>> * If we are queuing up buffers for the first time, then
>> * increase initial_index by one.
>> */
>> - if (fileio->initial_index < q->num_buffers)
>> + if (fileio->initial_index < vb2_get_num_buffers(q))
>> fileio->initial_index++;
>> /*
>> * The next buffer to use is either a buffer that's going to be
>> - * queued for the first time (initial_index < q->num_buffers)
>> - * or it is equal to q->num_buffers, meaning that the next
>> + * queued for the first time (initial_index < num_buffers)
>> + * or it is equal to num_buffers, meaning that the next
> What num_buffers?
Same here
>
> Best regards,
> Tomasz
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 01/56] media: videobuf2: Rename offset parameter
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-08 15:11 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 15:11 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Rename 'off' parameter to 'offset' to clarify the code.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 26 +++++++++----------
> 1 file changed, 13 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 27aee92f3eea..a5e57affeb30 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -356,23 +356,23 @@ static void __setup_offsets(struct vb2_buffer *vb)
> {
> struct vb2_queue *q = vb->vb2_queue;
> unsigned int plane;
> - unsigned long off = 0;
> + unsigned long offset = 0;
>
> if (vb->index) {
> struct vb2_buffer *prev = q->bufs[vb->index - 1];
> struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
>
> - off = PAGE_ALIGN(p->m.offset + p->length);
> + offset = PAGE_ALIGN(p->m.offset + p->length);
> }
>
> for (plane = 0; plane < vb->num_planes; ++plane) {
> - vb->planes[plane].m.offset = off;
> + vb->planes[plane].m.offset = offset;
>
> dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
> - vb->index, plane, off);
> + vb->index, plane, offset);
>
> - off += vb->planes[plane].length;
> - off = PAGE_ALIGN(off);
> + offset += vb->planes[plane].length;
> + offset = PAGE_ALIGN(offset);
> }
> }
>
> @@ -2185,9 +2185,9 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type)
> EXPORT_SYMBOL_GPL(vb2_core_streamoff);
>
> /*
> - * __find_plane_by_offset() - find plane associated with the given offset off
> + * __find_plane_by_offset() - find plane associated with the given offset
> */
> -static int __find_plane_by_offset(struct vb2_queue *q, unsigned long off,
> +static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
> unsigned int *_buffer, unsigned int *_plane)
> {
> struct vb2_buffer *vb;
> @@ -2218,7 +2218,7 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long off,
> vb = q->bufs[buffer];
>
> for (plane = 0; plane < vb->num_planes; ++plane) {
> - if (vb->planes[plane].m.offset == off) {
> + if (vb->planes[plane].m.offset == offset) {
> *_buffer = buffer;
> *_plane = plane;
> return 0;
> @@ -2304,7 +2304,7 @@ EXPORT_SYMBOL_GPL(vb2_core_expbuf);
>
> int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
> {
> - unsigned long off = vma->vm_pgoff << PAGE_SHIFT;
> + unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
> struct vb2_buffer *vb;
> unsigned int buffer = 0, plane = 0;
> int ret;
> @@ -2335,7 +2335,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
> * Find the plane corresponding to the offset passed by userspace. This
> * will return an error if not MEMORY_MMAP or file I/O is in progress.
> */
> - ret = __find_plane_by_offset(q, off, &buffer, &plane);
> + ret = __find_plane_by_offset(q, offset, &buffer, &plane);
> if (ret)
> goto unlock;
>
> @@ -2380,7 +2380,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
> unsigned long pgoff,
> unsigned long flags)
> {
> - unsigned long off = pgoff << PAGE_SHIFT;
> + unsigned long offset = pgoff << PAGE_SHIFT;
> struct vb2_buffer *vb;
> unsigned int buffer, plane;
> void *vaddr;
> @@ -2392,7 +2392,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
> * Find the plane corresponding to the offset passed by userspace. This
> * will return an error if not MEMORY_MMAP or file I/O is in progress.
> */
> - ret = __find_plane_by_offset(q, off, &buffer, &plane);
> + ret = __find_plane_by_offset(q, offset, &buffer, &plane);
> if (ret)
> goto unlock;
>
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 01/56] media: videobuf2: Rename offset parameter
@ 2023-11-08 15:11 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 15:11 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Rename 'off' parameter to 'offset' to clarify the code.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 26 +++++++++----------
> 1 file changed, 13 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 27aee92f3eea..a5e57affeb30 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -356,23 +356,23 @@ static void __setup_offsets(struct vb2_buffer *vb)
> {
> struct vb2_queue *q = vb->vb2_queue;
> unsigned int plane;
> - unsigned long off = 0;
> + unsigned long offset = 0;
>
> if (vb->index) {
> struct vb2_buffer *prev = q->bufs[vb->index - 1];
> struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
>
> - off = PAGE_ALIGN(p->m.offset + p->length);
> + offset = PAGE_ALIGN(p->m.offset + p->length);
> }
>
> for (plane = 0; plane < vb->num_planes; ++plane) {
> - vb->planes[plane].m.offset = off;
> + vb->planes[plane].m.offset = offset;
>
> dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
> - vb->index, plane, off);
> + vb->index, plane, offset);
>
> - off += vb->planes[plane].length;
> - off = PAGE_ALIGN(off);
> + offset += vb->planes[plane].length;
> + offset = PAGE_ALIGN(offset);
> }
> }
>
> @@ -2185,9 +2185,9 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type)
> EXPORT_SYMBOL_GPL(vb2_core_streamoff);
>
> /*
> - * __find_plane_by_offset() - find plane associated with the given offset off
> + * __find_plane_by_offset() - find plane associated with the given offset
> */
> -static int __find_plane_by_offset(struct vb2_queue *q, unsigned long off,
> +static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
> unsigned int *_buffer, unsigned int *_plane)
> {
> struct vb2_buffer *vb;
> @@ -2218,7 +2218,7 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long off,
> vb = q->bufs[buffer];
>
> for (plane = 0; plane < vb->num_planes; ++plane) {
> - if (vb->planes[plane].m.offset == off) {
> + if (vb->planes[plane].m.offset == offset) {
> *_buffer = buffer;
> *_plane = plane;
> return 0;
> @@ -2304,7 +2304,7 @@ EXPORT_SYMBOL_GPL(vb2_core_expbuf);
>
> int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
> {
> - unsigned long off = vma->vm_pgoff << PAGE_SHIFT;
> + unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
> struct vb2_buffer *vb;
> unsigned int buffer = 0, plane = 0;
> int ret;
> @@ -2335,7 +2335,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
> * Find the plane corresponding to the offset passed by userspace. This
> * will return an error if not MEMORY_MMAP or file I/O is in progress.
> */
> - ret = __find_plane_by_offset(q, off, &buffer, &plane);
> + ret = __find_plane_by_offset(q, offset, &buffer, &plane);
> if (ret)
> goto unlock;
>
> @@ -2380,7 +2380,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
> unsigned long pgoff,
> unsigned long flags)
> {
> - unsigned long off = pgoff << PAGE_SHIFT;
> + unsigned long offset = pgoff << PAGE_SHIFT;
> struct vb2_buffer *vb;
> unsigned int buffer, plane;
> void *vaddr;
> @@ -2392,7 +2392,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
> * Find the plane corresponding to the offset passed by userspace. This
> * will return an error if not MEMORY_MMAP or file I/O is in progress.
> */
> - ret = __find_plane_by_offset(q, off, &buffer, &plane);
> + ret = __find_plane_by_offset(q, offset, &buffer, &plane);
> if (ret)
> goto unlock;
>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 01/56] media: videobuf2: Rename offset parameter
@ 2023-11-08 15:11 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 15:11 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Rename 'off' parameter to 'offset' to clarify the code.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 26 +++++++++----------
> 1 file changed, 13 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 27aee92f3eea..a5e57affeb30 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -356,23 +356,23 @@ static void __setup_offsets(struct vb2_buffer *vb)
> {
> struct vb2_queue *q = vb->vb2_queue;
> unsigned int plane;
> - unsigned long off = 0;
> + unsigned long offset = 0;
>
> if (vb->index) {
> struct vb2_buffer *prev = q->bufs[vb->index - 1];
> struct vb2_plane *p = &prev->planes[prev->num_planes - 1];
>
> - off = PAGE_ALIGN(p->m.offset + p->length);
> + offset = PAGE_ALIGN(p->m.offset + p->length);
> }
>
> for (plane = 0; plane < vb->num_planes; ++plane) {
> - vb->planes[plane].m.offset = off;
> + vb->planes[plane].m.offset = offset;
>
> dprintk(q, 3, "buffer %d, plane %d offset 0x%08lx\n",
> - vb->index, plane, off);
> + vb->index, plane, offset);
>
> - off += vb->planes[plane].length;
> - off = PAGE_ALIGN(off);
> + offset += vb->planes[plane].length;
> + offset = PAGE_ALIGN(offset);
> }
> }
>
> @@ -2185,9 +2185,9 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type)
> EXPORT_SYMBOL_GPL(vb2_core_streamoff);
>
> /*
> - * __find_plane_by_offset() - find plane associated with the given offset off
> + * __find_plane_by_offset() - find plane associated with the given offset
> */
> -static int __find_plane_by_offset(struct vb2_queue *q, unsigned long off,
> +static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
> unsigned int *_buffer, unsigned int *_plane)
> {
> struct vb2_buffer *vb;
> @@ -2218,7 +2218,7 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long off,
> vb = q->bufs[buffer];
>
> for (plane = 0; plane < vb->num_planes; ++plane) {
> - if (vb->planes[plane].m.offset == off) {
> + if (vb->planes[plane].m.offset == offset) {
> *_buffer = buffer;
> *_plane = plane;
> return 0;
> @@ -2304,7 +2304,7 @@ EXPORT_SYMBOL_GPL(vb2_core_expbuf);
>
> int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
> {
> - unsigned long off = vma->vm_pgoff << PAGE_SHIFT;
> + unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
> struct vb2_buffer *vb;
> unsigned int buffer = 0, plane = 0;
> int ret;
> @@ -2335,7 +2335,7 @@ int vb2_mmap(struct vb2_queue *q, struct vm_area_struct *vma)
> * Find the plane corresponding to the offset passed by userspace. This
> * will return an error if not MEMORY_MMAP or file I/O is in progress.
> */
> - ret = __find_plane_by_offset(q, off, &buffer, &plane);
> + ret = __find_plane_by_offset(q, offset, &buffer, &plane);
> if (ret)
> goto unlock;
>
> @@ -2380,7 +2380,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
> unsigned long pgoff,
> unsigned long flags)
> {
> - unsigned long off = pgoff << PAGE_SHIFT;
> + unsigned long offset = pgoff << PAGE_SHIFT;
> struct vb2_buffer *vb;
> unsigned int buffer, plane;
> void *vaddr;
> @@ -2392,7 +2392,7 @@ unsigned long vb2_get_unmapped_area(struct vb2_queue *q,
> * Find the plane corresponding to the offset passed by userspace. This
> * will return an error if not MEMORY_MMAP or file I/O is in progress.
> */
> - ret = __find_plane_by_offset(q, off, &buffer, &plane);
> + ret = __find_plane_by_offset(q, offset, &buffer, &plane);
> if (ret)
> goto unlock;
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 03/56] media: videobuf2: Stop spamming kernel log with all queue counter
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-08 15:26 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 15:26 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Only report unbalanced queue counters do avoid spamming kernel log
> with useless information.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 79 +++++++++++--------
> 1 file changed, 44 insertions(+), 35 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 09be8e026044..47dba2a20d73 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -533,25 +533,26 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
>
> #ifdef CONFIG_VIDEO_ADV_DEBUG
> /*
> - * Check that all the calls were balances during the life-time of this
> - * queue. If not (or if the debug level is 1 or up), then dump the
> - * counters to the kernel log.
> + * Check that all the calls were balanced during the life-time of this
> + * queue. If not then dump the counters to the kernel log.
> */
> if (q->num_buffers) {
> bool unbalanced = q->cnt_start_streaming != q->cnt_stop_streaming ||
> q->cnt_prepare_streaming != q->cnt_unprepare_streaming ||
> q->cnt_wait_prepare != q->cnt_wait_finish;
>
> - if (unbalanced || debug) {
> - pr_info("counters for queue %p:%s\n", q,
> - unbalanced ? " UNBALANCED!" : "");
> - pr_info(" setup: %u start_streaming: %u stop_streaming: %u\n",
> - q->cnt_queue_setup, q->cnt_start_streaming,
> - q->cnt_stop_streaming);
> - pr_info(" prepare_streaming: %u unprepare_streaming: %u\n",
> - q->cnt_prepare_streaming, q->cnt_unprepare_streaming);
> - pr_info(" wait_prepare: %u wait_finish: %u\n",
> - q->cnt_wait_prepare, q->cnt_wait_finish);
> + if (unbalanced) {
> + pr_info("unbalanced counters for queue %p:\n", q);
> + if (q->cnt_start_streaming != q->cnt_stop_streaming)
> + pr_info(" setup: %u start_streaming: %u stop_streaming: %u\n",
> + q->cnt_queue_setup, q->cnt_start_streaming,
> + q->cnt_stop_streaming);
> + if (q->cnt_prepare_streaming != q->cnt_unprepare_streaming)
> + pr_info(" prepare_streaming: %u unprepare_streaming: %u\n",
> + q->cnt_prepare_streaming, q->cnt_unprepare_streaming);
> + if (q->cnt_wait_prepare != q->cnt_wait_finish)
> + pr_info(" wait_prepare: %u wait_finish: %u\n",
> + q->cnt_wait_prepare, q->cnt_wait_finish);
> }
> q->cnt_queue_setup = 0;
> q->cnt_wait_prepare = 0;
> @@ -572,29 +573,37 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
> vb->cnt_buf_prepare != vb->cnt_buf_finish ||
> vb->cnt_buf_init != vb->cnt_buf_cleanup;
>
> - if (unbalanced || debug) {
> - pr_info(" counters for queue %p, buffer %d:%s\n",
> - q, buffer, unbalanced ? " UNBALANCED!" : "");
> - pr_info(" buf_init: %u buf_cleanup: %u buf_prepare: %u buf_finish: %u\n",
> - vb->cnt_buf_init, vb->cnt_buf_cleanup,
> - vb->cnt_buf_prepare, vb->cnt_buf_finish);
> - pr_info(" buf_out_validate: %u buf_queue: %u buf_done: %u buf_request_complete: %u\n",
> - vb->cnt_buf_out_validate, vb->cnt_buf_queue,
> - vb->cnt_buf_done, vb->cnt_buf_request_complete);
> - pr_info(" alloc: %u put: %u prepare: %u finish: %u mmap: %u\n",
> - vb->cnt_mem_alloc, vb->cnt_mem_put,
> - vb->cnt_mem_prepare, vb->cnt_mem_finish,
> - vb->cnt_mem_mmap);
> - pr_info(" get_userptr: %u put_userptr: %u\n",
> - vb->cnt_mem_get_userptr, vb->cnt_mem_put_userptr);
> - pr_info(" attach_dmabuf: %u detach_dmabuf: %u map_dmabuf: %u unmap_dmabuf: %u\n",
> - vb->cnt_mem_attach_dmabuf, vb->cnt_mem_detach_dmabuf,
> - vb->cnt_mem_map_dmabuf, vb->cnt_mem_unmap_dmabuf);
> - pr_info(" get_dmabuf: %u num_users: %u vaddr: %u cookie: %u\n",
> + if (unbalanced) {
> + pr_info("unbalanced counters for queue %p, buffer %d:\n",
> + q, buffer);
> + if (vb->cnt_buf_init != vb->cnt_buf_cleanup)
> + pr_info(" buf_init: %u buf_cleanup: %u\n",
> + vb->cnt_buf_init, vb->cnt_buf_cleanup);
> + if (vb->cnt_buf_prepare != vb->cnt_buf_finish)
> + pr_info(" buf_prepare: %u buf_finish: %u\n",
> + vb->cnt_buf_prepare, vb->cnt_buf_finish);
> + if (vb->cnt_buf_queue != vb->cnt_buf_done)
> + pr_info(" buf_out_validate: %u buf_queue: %u buf_done: %u buf_request_complete: %u\n",
> + vb->cnt_buf_out_validate, vb->cnt_buf_queue,
> + vb->cnt_buf_done, vb->cnt_buf_request_complete);
> + if (vb->cnt_mem_alloc != vb->cnt_mem_put)
> + pr_info(" alloc: %u put: %u\n",
> + vb->cnt_mem_alloc, vb->cnt_mem_put);
> + if (vb->cnt_mem_prepare != vb->cnt_mem_finish)
> + pr_info(" prepare: %u finish: %u\n",
> + vb->cnt_mem_prepare, vb->cnt_mem_finish);
> + if (vb->cnt_mem_get_userptr != vb->cnt_mem_put_userptr)
> + pr_info(" get_userptr: %u put_userptr: %u\n",
> + vb->cnt_mem_get_userptr, vb->cnt_mem_put_userptr);
> + if (vb->cnt_mem_attach_dmabuf != vb->cnt_mem_detach_dmabuf)
> + pr_info(" attach_dmabuf: %u detach_dmabuf: %u\n",
> + vb->cnt_mem_attach_dmabuf, vb->cnt_mem_detach_dmabuf);
> + if (vb->cnt_mem_map_dmabuf != vb->cnt_mem_unmap_dmabuf)
> + pr_info(" map_dmabuf: %u unmap_dmabuf: %u\n",
> + vb->cnt_mem_map_dmabuf, vb->cnt_mem_unmap_dmabuf);
> + pr_info(" get_dmabuf: %u num_users: %u\n",
> vb->cnt_mem_get_dmabuf,
> - vb->cnt_mem_num_users,
> - vb->cnt_mem_vaddr,
> - vb->cnt_mem_cookie);
> + vb->cnt_mem_num_users);
> }
> }
> #endif
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 03/56] media: videobuf2: Stop spamming kernel log with all queue counter
@ 2023-11-08 15:26 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 15:26 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Only report unbalanced queue counters do avoid spamming kernel log
> with useless information.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 79 +++++++++++--------
> 1 file changed, 44 insertions(+), 35 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 09be8e026044..47dba2a20d73 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -533,25 +533,26 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
>
> #ifdef CONFIG_VIDEO_ADV_DEBUG
> /*
> - * Check that all the calls were balances during the life-time of this
> - * queue. If not (or if the debug level is 1 or up), then dump the
> - * counters to the kernel log.
> + * Check that all the calls were balanced during the life-time of this
> + * queue. If not then dump the counters to the kernel log.
> */
> if (q->num_buffers) {
> bool unbalanced = q->cnt_start_streaming != q->cnt_stop_streaming ||
> q->cnt_prepare_streaming != q->cnt_unprepare_streaming ||
> q->cnt_wait_prepare != q->cnt_wait_finish;
>
> - if (unbalanced || debug) {
> - pr_info("counters for queue %p:%s\n", q,
> - unbalanced ? " UNBALANCED!" : "");
> - pr_info(" setup: %u start_streaming: %u stop_streaming: %u\n",
> - q->cnt_queue_setup, q->cnt_start_streaming,
> - q->cnt_stop_streaming);
> - pr_info(" prepare_streaming: %u unprepare_streaming: %u\n",
> - q->cnt_prepare_streaming, q->cnt_unprepare_streaming);
> - pr_info(" wait_prepare: %u wait_finish: %u\n",
> - q->cnt_wait_prepare, q->cnt_wait_finish);
> + if (unbalanced) {
> + pr_info("unbalanced counters for queue %p:\n", q);
> + if (q->cnt_start_streaming != q->cnt_stop_streaming)
> + pr_info(" setup: %u start_streaming: %u stop_streaming: %u\n",
> + q->cnt_queue_setup, q->cnt_start_streaming,
> + q->cnt_stop_streaming);
> + if (q->cnt_prepare_streaming != q->cnt_unprepare_streaming)
> + pr_info(" prepare_streaming: %u unprepare_streaming: %u\n",
> + q->cnt_prepare_streaming, q->cnt_unprepare_streaming);
> + if (q->cnt_wait_prepare != q->cnt_wait_finish)
> + pr_info(" wait_prepare: %u wait_finish: %u\n",
> + q->cnt_wait_prepare, q->cnt_wait_finish);
> }
> q->cnt_queue_setup = 0;
> q->cnt_wait_prepare = 0;
> @@ -572,29 +573,37 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
> vb->cnt_buf_prepare != vb->cnt_buf_finish ||
> vb->cnt_buf_init != vb->cnt_buf_cleanup;
>
> - if (unbalanced || debug) {
> - pr_info(" counters for queue %p, buffer %d:%s\n",
> - q, buffer, unbalanced ? " UNBALANCED!" : "");
> - pr_info(" buf_init: %u buf_cleanup: %u buf_prepare: %u buf_finish: %u\n",
> - vb->cnt_buf_init, vb->cnt_buf_cleanup,
> - vb->cnt_buf_prepare, vb->cnt_buf_finish);
> - pr_info(" buf_out_validate: %u buf_queue: %u buf_done: %u buf_request_complete: %u\n",
> - vb->cnt_buf_out_validate, vb->cnt_buf_queue,
> - vb->cnt_buf_done, vb->cnt_buf_request_complete);
> - pr_info(" alloc: %u put: %u prepare: %u finish: %u mmap: %u\n",
> - vb->cnt_mem_alloc, vb->cnt_mem_put,
> - vb->cnt_mem_prepare, vb->cnt_mem_finish,
> - vb->cnt_mem_mmap);
> - pr_info(" get_userptr: %u put_userptr: %u\n",
> - vb->cnt_mem_get_userptr, vb->cnt_mem_put_userptr);
> - pr_info(" attach_dmabuf: %u detach_dmabuf: %u map_dmabuf: %u unmap_dmabuf: %u\n",
> - vb->cnt_mem_attach_dmabuf, vb->cnt_mem_detach_dmabuf,
> - vb->cnt_mem_map_dmabuf, vb->cnt_mem_unmap_dmabuf);
> - pr_info(" get_dmabuf: %u num_users: %u vaddr: %u cookie: %u\n",
> + if (unbalanced) {
> + pr_info("unbalanced counters for queue %p, buffer %d:\n",
> + q, buffer);
> + if (vb->cnt_buf_init != vb->cnt_buf_cleanup)
> + pr_info(" buf_init: %u buf_cleanup: %u\n",
> + vb->cnt_buf_init, vb->cnt_buf_cleanup);
> + if (vb->cnt_buf_prepare != vb->cnt_buf_finish)
> + pr_info(" buf_prepare: %u buf_finish: %u\n",
> + vb->cnt_buf_prepare, vb->cnt_buf_finish);
> + if (vb->cnt_buf_queue != vb->cnt_buf_done)
> + pr_info(" buf_out_validate: %u buf_queue: %u buf_done: %u buf_request_complete: %u\n",
> + vb->cnt_buf_out_validate, vb->cnt_buf_queue,
> + vb->cnt_buf_done, vb->cnt_buf_request_complete);
> + if (vb->cnt_mem_alloc != vb->cnt_mem_put)
> + pr_info(" alloc: %u put: %u\n",
> + vb->cnt_mem_alloc, vb->cnt_mem_put);
> + if (vb->cnt_mem_prepare != vb->cnt_mem_finish)
> + pr_info(" prepare: %u finish: %u\n",
> + vb->cnt_mem_prepare, vb->cnt_mem_finish);
> + if (vb->cnt_mem_get_userptr != vb->cnt_mem_put_userptr)
> + pr_info(" get_userptr: %u put_userptr: %u\n",
> + vb->cnt_mem_get_userptr, vb->cnt_mem_put_userptr);
> + if (vb->cnt_mem_attach_dmabuf != vb->cnt_mem_detach_dmabuf)
> + pr_info(" attach_dmabuf: %u detach_dmabuf: %u\n",
> + vb->cnt_mem_attach_dmabuf, vb->cnt_mem_detach_dmabuf);
> + if (vb->cnt_mem_map_dmabuf != vb->cnt_mem_unmap_dmabuf)
> + pr_info(" map_dmabuf: %u unmap_dmabuf: %u\n",
> + vb->cnt_mem_map_dmabuf, vb->cnt_mem_unmap_dmabuf);
> + pr_info(" get_dmabuf: %u num_users: %u\n",
> vb->cnt_mem_get_dmabuf,
> - vb->cnt_mem_num_users,
> - vb->cnt_mem_vaddr,
> - vb->cnt_mem_cookie);
> + vb->cnt_mem_num_users);
> }
> }
> #endif
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 03/56] media: videobuf2: Stop spamming kernel log with all queue counter
@ 2023-11-08 15:26 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 15:26 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Only report unbalanced queue counters do avoid spamming kernel log
> with useless information.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 79 +++++++++++--------
> 1 file changed, 44 insertions(+), 35 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 09be8e026044..47dba2a20d73 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -533,25 +533,26 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
>
> #ifdef CONFIG_VIDEO_ADV_DEBUG
> /*
> - * Check that all the calls were balances during the life-time of this
> - * queue. If not (or if the debug level is 1 or up), then dump the
> - * counters to the kernel log.
> + * Check that all the calls were balanced during the life-time of this
> + * queue. If not then dump the counters to the kernel log.
> */
> if (q->num_buffers) {
> bool unbalanced = q->cnt_start_streaming != q->cnt_stop_streaming ||
> q->cnt_prepare_streaming != q->cnt_unprepare_streaming ||
> q->cnt_wait_prepare != q->cnt_wait_finish;
>
> - if (unbalanced || debug) {
> - pr_info("counters for queue %p:%s\n", q,
> - unbalanced ? " UNBALANCED!" : "");
> - pr_info(" setup: %u start_streaming: %u stop_streaming: %u\n",
> - q->cnt_queue_setup, q->cnt_start_streaming,
> - q->cnt_stop_streaming);
> - pr_info(" prepare_streaming: %u unprepare_streaming: %u\n",
> - q->cnt_prepare_streaming, q->cnt_unprepare_streaming);
> - pr_info(" wait_prepare: %u wait_finish: %u\n",
> - q->cnt_wait_prepare, q->cnt_wait_finish);
> + if (unbalanced) {
> + pr_info("unbalanced counters for queue %p:\n", q);
> + if (q->cnt_start_streaming != q->cnt_stop_streaming)
> + pr_info(" setup: %u start_streaming: %u stop_streaming: %u\n",
> + q->cnt_queue_setup, q->cnt_start_streaming,
> + q->cnt_stop_streaming);
> + if (q->cnt_prepare_streaming != q->cnt_unprepare_streaming)
> + pr_info(" prepare_streaming: %u unprepare_streaming: %u\n",
> + q->cnt_prepare_streaming, q->cnt_unprepare_streaming);
> + if (q->cnt_wait_prepare != q->cnt_wait_finish)
> + pr_info(" wait_prepare: %u wait_finish: %u\n",
> + q->cnt_wait_prepare, q->cnt_wait_finish);
> }
> q->cnt_queue_setup = 0;
> q->cnt_wait_prepare = 0;
> @@ -572,29 +573,37 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
> vb->cnt_buf_prepare != vb->cnt_buf_finish ||
> vb->cnt_buf_init != vb->cnt_buf_cleanup;
>
> - if (unbalanced || debug) {
> - pr_info(" counters for queue %p, buffer %d:%s\n",
> - q, buffer, unbalanced ? " UNBALANCED!" : "");
> - pr_info(" buf_init: %u buf_cleanup: %u buf_prepare: %u buf_finish: %u\n",
> - vb->cnt_buf_init, vb->cnt_buf_cleanup,
> - vb->cnt_buf_prepare, vb->cnt_buf_finish);
> - pr_info(" buf_out_validate: %u buf_queue: %u buf_done: %u buf_request_complete: %u\n",
> - vb->cnt_buf_out_validate, vb->cnt_buf_queue,
> - vb->cnt_buf_done, vb->cnt_buf_request_complete);
> - pr_info(" alloc: %u put: %u prepare: %u finish: %u mmap: %u\n",
> - vb->cnt_mem_alloc, vb->cnt_mem_put,
> - vb->cnt_mem_prepare, vb->cnt_mem_finish,
> - vb->cnt_mem_mmap);
> - pr_info(" get_userptr: %u put_userptr: %u\n",
> - vb->cnt_mem_get_userptr, vb->cnt_mem_put_userptr);
> - pr_info(" attach_dmabuf: %u detach_dmabuf: %u map_dmabuf: %u unmap_dmabuf: %u\n",
> - vb->cnt_mem_attach_dmabuf, vb->cnt_mem_detach_dmabuf,
> - vb->cnt_mem_map_dmabuf, vb->cnt_mem_unmap_dmabuf);
> - pr_info(" get_dmabuf: %u num_users: %u vaddr: %u cookie: %u\n",
> + if (unbalanced) {
> + pr_info("unbalanced counters for queue %p, buffer %d:\n",
> + q, buffer);
> + if (vb->cnt_buf_init != vb->cnt_buf_cleanup)
> + pr_info(" buf_init: %u buf_cleanup: %u\n",
> + vb->cnt_buf_init, vb->cnt_buf_cleanup);
> + if (vb->cnt_buf_prepare != vb->cnt_buf_finish)
> + pr_info(" buf_prepare: %u buf_finish: %u\n",
> + vb->cnt_buf_prepare, vb->cnt_buf_finish);
> + if (vb->cnt_buf_queue != vb->cnt_buf_done)
> + pr_info(" buf_out_validate: %u buf_queue: %u buf_done: %u buf_request_complete: %u\n",
> + vb->cnt_buf_out_validate, vb->cnt_buf_queue,
> + vb->cnt_buf_done, vb->cnt_buf_request_complete);
> + if (vb->cnt_mem_alloc != vb->cnt_mem_put)
> + pr_info(" alloc: %u put: %u\n",
> + vb->cnt_mem_alloc, vb->cnt_mem_put);
> + if (vb->cnt_mem_prepare != vb->cnt_mem_finish)
> + pr_info(" prepare: %u finish: %u\n",
> + vb->cnt_mem_prepare, vb->cnt_mem_finish);
> + if (vb->cnt_mem_get_userptr != vb->cnt_mem_put_userptr)
> + pr_info(" get_userptr: %u put_userptr: %u\n",
> + vb->cnt_mem_get_userptr, vb->cnt_mem_put_userptr);
> + if (vb->cnt_mem_attach_dmabuf != vb->cnt_mem_detach_dmabuf)
> + pr_info(" attach_dmabuf: %u detach_dmabuf: %u\n",
> + vb->cnt_mem_attach_dmabuf, vb->cnt_mem_detach_dmabuf);
> + if (vb->cnt_mem_map_dmabuf != vb->cnt_mem_unmap_dmabuf)
> + pr_info(" map_dmabuf: %u unmap_dmabuf: %u\n",
> + vb->cnt_mem_map_dmabuf, vb->cnt_mem_unmap_dmabuf);
> + pr_info(" get_dmabuf: %u num_users: %u\n",
> vb->cnt_mem_get_dmabuf,
> - vb->cnt_mem_num_users,
> - vb->cnt_mem_vaddr,
> - vb->cnt_mem_cookie);
> + vb->cnt_mem_num_users);
> }
> }
> #endif
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 52/56] media: core: Add bitmap manage bufs array entries
2023-11-08 10:44 ` Tomasz Figa
(?)
@ 2023-11-08 15:30 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-08 15:30 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 08/11/2023 à 11:44, Tomasz Figa a écrit :
> On Tue, Oct 31, 2023 at 05:31:00PM +0100, Benjamin Gaignard wrote:
>> Add a bitmap field to know which of bufs array entries are
>> used or not.
>> Remove no more used num_buffers field from queue structure.
>> Use bitmap_find_next_zero_area() to find the first possible
>> range when creating new buffers to fill the gaps.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> .../media/common/videobuf2/videobuf2-core.c | 42 +++++++++++++++----
>> include/media/videobuf2-core.h | 15 ++++---
>> 2 files changed, 42 insertions(+), 15 deletions(-)
>>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index 2c8cf479a962..6e88406fcae9 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -416,11 +416,12 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
>> */
>> static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
>> {
>> - WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
>> + WARN_ON(index >= q->max_num_buffers || test_bit(index, q->bufs_bitmap));
>>
>> q->bufs[index] = vb;
>> vb->index = index;
>> vb->vb2_queue = q;
>> + set_bit(index, q->bufs_bitmap);
>> }
>>
>> /**
>> @@ -429,6 +430,7 @@ static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, uns
>> */
>> static void vb2_queue_remove_buffer(struct vb2_buffer *vb)
>> {
>> + clear_bit(vb->index, vb->vb2_queue->bufs_bitmap);
>> vb->vb2_queue->bufs[vb->index] = NULL;
>> vb->vb2_queue = NULL;
>> }
>> @@ -450,11 +452,12 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
>> unsigned long index;
>> int ret;
>>
>> - /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
>> + /* Ensure that vb2_get_num_buffers(q) + num_buffers is no more than q->max_num_buffers */
>> num_buffers = min_t(unsigned int, num_buffers,
>> q->max_num_buffers - vb2_get_num_buffers(q));
>>
>> - index = vb2_get_num_buffers(q);
>> + index = bitmap_find_next_zero_area(q->bufs_bitmap, q->max_num_buffers,
>> + 0, num_buffers, 0);
>>
>> *first_index = index;
>>
>> @@ -656,7 +659,6 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
>> kfree(vb);
>> }
>>
>> - q->num_buffers -= buffers;
>> if (!vb2_get_num_buffers(q)) {
>> q->memory = VB2_MEMORY_UNKNOWN;
>> INIT_LIST_HEAD(&q->queued_list);
>> @@ -874,6 +876,14 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
>> q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
>> if (!q->bufs)
>> ret = -ENOMEM;
>> +
>> + if (!q->bufs_bitmap)
>> + q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
>> + if (!q->bufs_bitmap) {
>> + ret = -ENOMEM;
>> + kfree(q->bufs);
>> + q->bufs = NULL;
>> + }
>> q->memory = memory;
>> mutex_unlock(&q->mmap_lock);
>> if (ret)
>> @@ -943,7 +953,6 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
>> }
>>
>> mutex_lock(&q->mmap_lock);
>> - q->num_buffers = allocated_buffers;
>>
>> if (ret < 0) {
>> /*
>> @@ -970,6 +979,10 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
>> mutex_lock(&q->mmap_lock);
>> q->memory = VB2_MEMORY_UNKNOWN;
>> mutex_unlock(&q->mmap_lock);
>> + kfree(q->bufs);
>> + q->bufs = NULL;
>> + bitmap_free(q->bufs_bitmap);
>> + q->bufs_bitmap = NULL;
>> return ret;
>> }
>> EXPORT_SYMBOL_GPL(vb2_core_reqbufs);
>> @@ -1006,9 +1019,19 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> q->memory = memory;
>> if (!q->bufs)
>> q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
>> - if (!q->bufs)
>> + if (!q->bufs) {
>> ret = -ENOMEM;
>> + goto unlock;
>> + }
>> + if (!q->bufs_bitmap)
>> + q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
> Same as with the kcalloc(). Why not just allocate this in the core code,
> e.g. vb2_core_queue_init()?
>
> Actually, is it because we want to avoid allocating
> resources early, before the need to actually use the vb2 queue?
> If so, could this go to some other core function that runs later, e.g. __vb2_queue_alloc()?
For the same reason :-)
vb2_core_queue_init() and vb2_core_queue_release() aren't balanced so I can't use them for that.
>
>> + if (!q->bufs_bitmap) {
>> + ret = -ENOMEM;
>> + kfree(q->bufs);
>> + q->bufs = NULL;
>> + }
>> mutex_unlock(&q->mmap_lock);
>> +unlock:
>> if (ret)
>> return ret;
>> q->waiting_for_buffers = !q->is_output;
>> @@ -1070,7 +1093,6 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> }
>>
>> mutex_lock(&q->mmap_lock);
>> - q->num_buffers += allocated_buffers;
>>
>> if (ret < 0) {
>> /*
>> @@ -2549,7 +2571,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
>> __vb2_queue_free(q, q->max_num_buffers);
>> kfree(q->bufs);
>> q->bufs = NULL;
>> - q->num_buffers = 0;
>> + bitmap_free(q->bufs_bitmap);
>> + q->bufs_bitmap = NULL;
>> +
>> mutex_unlock(&q->mmap_lock);
>> }
>> EXPORT_SYMBOL_GPL(vb2_core_queue_release);
>> @@ -2904,7 +2928,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
>> * Check if we need to dequeue the buffer.
>> */
>> index = fileio->cur_index;
>> - if (index >= q->num_buffers) {
>> + if (!test_bit(index, q->bufs_bitmap)) {
> I don't like this low level manipulation of queue internals here (after all
> the work other patches did to use helpers). Why not just keep
> vb2_get_num_buffers() here?
I will change that and put it in patch 8
>
>> struct vb2_buffer *b;
>>
>> /*
>> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
>> index 6986ff4b77cd..288477075a0e 100644
>> --- a/include/media/videobuf2-core.h
>> +++ b/include/media/videobuf2-core.h
>> @@ -346,7 +346,7 @@ struct vb2_buffer {
>> * describes the requested number of planes and sizes\[\]
>> * contains the requested plane sizes. In this case
>> * \*num_buffers are being allocated additionally to
>> - * q->num_buffers. If either \*num_planes or the requested
>> + * queue buffers. If either \*num_planes or the requested
> Perhaps "the buffers already in the queue"?
ok
>
>> * sizes are invalid callback must return %-EINVAL.
>> * @wait_prepare: release any locks taken while calling vb2 functions;
>> * it is called before an ioctl needs to wait for a new
>> @@ -557,7 +557,7 @@ struct vb2_buf_ops {
>> * @memory: current memory type used
>> * @dma_dir: DMA mapping direction.
>> * @bufs: videobuf2 buffer structures
>> - * @num_buffers: number of allocated/used buffers
>> + * @bufs_bitmap: bitmap to manage bufs entries.
> Perhaps "bitmap tracking whether each bufs[] entry is used"?
ok
>
>> * @max_num_buffers: upper limit of number of allocated/used buffers
>> * @queued_list: list of buffers currently queued from userspace
>> * @queued_count: number of buffers queued and ready for streaming.
>> @@ -621,7 +621,7 @@ struct vb2_queue {
>> unsigned int memory;
>> enum dma_data_direction dma_dir;
>> struct vb2_buffer **bufs;
>> - unsigned int num_buffers;
>> + unsigned long *bufs_bitmap;
>> unsigned int max_num_buffers;
>>
>> struct list_head queued_list;
>> @@ -1150,7 +1150,10 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
>> */
>> static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
>> {
>> - return q->num_buffers;
>> + if (!q->bufs_bitmap)
>> + return 0;
>> +
>> + return bitmap_weight(q->bufs_bitmap, q->max_num_buffers);
> Hmm, could we just cache the number of buffers we have, so that we don't
> have to go over the entire bitmap every time? (Basically just keep the
> code that we had for handling q->num_buffers before this patch.)
I would prefer no duplicate how the number of buffers in a queue is computed
and bitmap offer helpers for that. Why not use it ?
>
>> }
>>
>> /**
>> @@ -1253,13 +1256,13 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
>> static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
>> unsigned int index)
>> {
>> - if (!q->bufs)
>> + if (!q->bufs_bitmap)
>> return NULL;
>>
>> if (index >= q->max_num_buffers)
>> return NULL;
>>
>> - if (index < q->num_buffers)
>> + if (test_bit(index, q->bufs_bitmap))
> Aha, I see why we need the extra condition above now. Perhaps it should've
> been added in this patch instead?
For me it was more explicit do introduce it at the same time that
max_num_buffers field.
Regards,
Benjamin
>
>> return q->bufs[index];
>> return NULL;
>> }
>> --
>> 2.39.2
>>
> Best regards,
> Tomasz
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 52/56] media: core: Add bitmap manage bufs array entries
@ 2023-11-08 15:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-08 15:30 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 08/11/2023 à 11:44, Tomasz Figa a écrit :
> On Tue, Oct 31, 2023 at 05:31:00PM +0100, Benjamin Gaignard wrote:
>> Add a bitmap field to know which of bufs array entries are
>> used or not.
>> Remove no more used num_buffers field from queue structure.
>> Use bitmap_find_next_zero_area() to find the first possible
>> range when creating new buffers to fill the gaps.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> .../media/common/videobuf2/videobuf2-core.c | 42 +++++++++++++++----
>> include/media/videobuf2-core.h | 15 ++++---
>> 2 files changed, 42 insertions(+), 15 deletions(-)
>>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index 2c8cf479a962..6e88406fcae9 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -416,11 +416,12 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
>> */
>> static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
>> {
>> - WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
>> + WARN_ON(index >= q->max_num_buffers || test_bit(index, q->bufs_bitmap));
>>
>> q->bufs[index] = vb;
>> vb->index = index;
>> vb->vb2_queue = q;
>> + set_bit(index, q->bufs_bitmap);
>> }
>>
>> /**
>> @@ -429,6 +430,7 @@ static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, uns
>> */
>> static void vb2_queue_remove_buffer(struct vb2_buffer *vb)
>> {
>> + clear_bit(vb->index, vb->vb2_queue->bufs_bitmap);
>> vb->vb2_queue->bufs[vb->index] = NULL;
>> vb->vb2_queue = NULL;
>> }
>> @@ -450,11 +452,12 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
>> unsigned long index;
>> int ret;
>>
>> - /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
>> + /* Ensure that vb2_get_num_buffers(q) + num_buffers is no more than q->max_num_buffers */
>> num_buffers = min_t(unsigned int, num_buffers,
>> q->max_num_buffers - vb2_get_num_buffers(q));
>>
>> - index = vb2_get_num_buffers(q);
>> + index = bitmap_find_next_zero_area(q->bufs_bitmap, q->max_num_buffers,
>> + 0, num_buffers, 0);
>>
>> *first_index = index;
>>
>> @@ -656,7 +659,6 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
>> kfree(vb);
>> }
>>
>> - q->num_buffers -= buffers;
>> if (!vb2_get_num_buffers(q)) {
>> q->memory = VB2_MEMORY_UNKNOWN;
>> INIT_LIST_HEAD(&q->queued_list);
>> @@ -874,6 +876,14 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
>> q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
>> if (!q->bufs)
>> ret = -ENOMEM;
>> +
>> + if (!q->bufs_bitmap)
>> + q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
>> + if (!q->bufs_bitmap) {
>> + ret = -ENOMEM;
>> + kfree(q->bufs);
>> + q->bufs = NULL;
>> + }
>> q->memory = memory;
>> mutex_unlock(&q->mmap_lock);
>> if (ret)
>> @@ -943,7 +953,6 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
>> }
>>
>> mutex_lock(&q->mmap_lock);
>> - q->num_buffers = allocated_buffers;
>>
>> if (ret < 0) {
>> /*
>> @@ -970,6 +979,10 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
>> mutex_lock(&q->mmap_lock);
>> q->memory = VB2_MEMORY_UNKNOWN;
>> mutex_unlock(&q->mmap_lock);
>> + kfree(q->bufs);
>> + q->bufs = NULL;
>> + bitmap_free(q->bufs_bitmap);
>> + q->bufs_bitmap = NULL;
>> return ret;
>> }
>> EXPORT_SYMBOL_GPL(vb2_core_reqbufs);
>> @@ -1006,9 +1019,19 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> q->memory = memory;
>> if (!q->bufs)
>> q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
>> - if (!q->bufs)
>> + if (!q->bufs) {
>> ret = -ENOMEM;
>> + goto unlock;
>> + }
>> + if (!q->bufs_bitmap)
>> + q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
> Same as with the kcalloc(). Why not just allocate this in the core code,
> e.g. vb2_core_queue_init()?
>
> Actually, is it because we want to avoid allocating
> resources early, before the need to actually use the vb2 queue?
> If so, could this go to some other core function that runs later, e.g. __vb2_queue_alloc()?
For the same reason :-)
vb2_core_queue_init() and vb2_core_queue_release() aren't balanced so I can't use them for that.
>
>> + if (!q->bufs_bitmap) {
>> + ret = -ENOMEM;
>> + kfree(q->bufs);
>> + q->bufs = NULL;
>> + }
>> mutex_unlock(&q->mmap_lock);
>> +unlock:
>> if (ret)
>> return ret;
>> q->waiting_for_buffers = !q->is_output;
>> @@ -1070,7 +1093,6 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> }
>>
>> mutex_lock(&q->mmap_lock);
>> - q->num_buffers += allocated_buffers;
>>
>> if (ret < 0) {
>> /*
>> @@ -2549,7 +2571,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
>> __vb2_queue_free(q, q->max_num_buffers);
>> kfree(q->bufs);
>> q->bufs = NULL;
>> - q->num_buffers = 0;
>> + bitmap_free(q->bufs_bitmap);
>> + q->bufs_bitmap = NULL;
>> +
>> mutex_unlock(&q->mmap_lock);
>> }
>> EXPORT_SYMBOL_GPL(vb2_core_queue_release);
>> @@ -2904,7 +2928,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
>> * Check if we need to dequeue the buffer.
>> */
>> index = fileio->cur_index;
>> - if (index >= q->num_buffers) {
>> + if (!test_bit(index, q->bufs_bitmap)) {
> I don't like this low level manipulation of queue internals here (after all
> the work other patches did to use helpers). Why not just keep
> vb2_get_num_buffers() here?
I will change that and put it in patch 8
>
>> struct vb2_buffer *b;
>>
>> /*
>> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
>> index 6986ff4b77cd..288477075a0e 100644
>> --- a/include/media/videobuf2-core.h
>> +++ b/include/media/videobuf2-core.h
>> @@ -346,7 +346,7 @@ struct vb2_buffer {
>> * describes the requested number of planes and sizes\[\]
>> * contains the requested plane sizes. In this case
>> * \*num_buffers are being allocated additionally to
>> - * q->num_buffers. If either \*num_planes or the requested
>> + * queue buffers. If either \*num_planes or the requested
> Perhaps "the buffers already in the queue"?
ok
>
>> * sizes are invalid callback must return %-EINVAL.
>> * @wait_prepare: release any locks taken while calling vb2 functions;
>> * it is called before an ioctl needs to wait for a new
>> @@ -557,7 +557,7 @@ struct vb2_buf_ops {
>> * @memory: current memory type used
>> * @dma_dir: DMA mapping direction.
>> * @bufs: videobuf2 buffer structures
>> - * @num_buffers: number of allocated/used buffers
>> + * @bufs_bitmap: bitmap to manage bufs entries.
> Perhaps "bitmap tracking whether each bufs[] entry is used"?
ok
>
>> * @max_num_buffers: upper limit of number of allocated/used buffers
>> * @queued_list: list of buffers currently queued from userspace
>> * @queued_count: number of buffers queued and ready for streaming.
>> @@ -621,7 +621,7 @@ struct vb2_queue {
>> unsigned int memory;
>> enum dma_data_direction dma_dir;
>> struct vb2_buffer **bufs;
>> - unsigned int num_buffers;
>> + unsigned long *bufs_bitmap;
>> unsigned int max_num_buffers;
>>
>> struct list_head queued_list;
>> @@ -1150,7 +1150,10 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
>> */
>> static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
>> {
>> - return q->num_buffers;
>> + if (!q->bufs_bitmap)
>> + return 0;
>> +
>> + return bitmap_weight(q->bufs_bitmap, q->max_num_buffers);
> Hmm, could we just cache the number of buffers we have, so that we don't
> have to go over the entire bitmap every time? (Basically just keep the
> code that we had for handling q->num_buffers before this patch.)
I would prefer no duplicate how the number of buffers in a queue is computed
and bitmap offer helpers for that. Why not use it ?
>
>> }
>>
>> /**
>> @@ -1253,13 +1256,13 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
>> static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
>> unsigned int index)
>> {
>> - if (!q->bufs)
>> + if (!q->bufs_bitmap)
>> return NULL;
>>
>> if (index >= q->max_num_buffers)
>> return NULL;
>>
>> - if (index < q->num_buffers)
>> + if (test_bit(index, q->bufs_bitmap))
> Aha, I see why we need the extra condition above now. Perhaps it should've
> been added in this patch instead?
For me it was more explicit do introduce it at the same time that
max_num_buffers field.
Regards,
Benjamin
>
>> return q->bufs[index];
>> return NULL;
>> }
>> --
>> 2.39.2
>>
> Best regards,
> Tomasz
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 52/56] media: core: Add bitmap manage bufs array entries
@ 2023-11-08 15:30 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-08 15:30 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 08/11/2023 à 11:44, Tomasz Figa a écrit :
> On Tue, Oct 31, 2023 at 05:31:00PM +0100, Benjamin Gaignard wrote:
>> Add a bitmap field to know which of bufs array entries are
>> used or not.
>> Remove no more used num_buffers field from queue structure.
>> Use bitmap_find_next_zero_area() to find the first possible
>> range when creating new buffers to fill the gaps.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> .../media/common/videobuf2/videobuf2-core.c | 42 +++++++++++++++----
>> include/media/videobuf2-core.h | 15 ++++---
>> 2 files changed, 42 insertions(+), 15 deletions(-)
>>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index 2c8cf479a962..6e88406fcae9 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -416,11 +416,12 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
>> */
>> static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
>> {
>> - WARN_ON(index >= q->max_num_buffers || q->bufs[index]);
>> + WARN_ON(index >= q->max_num_buffers || test_bit(index, q->bufs_bitmap));
>>
>> q->bufs[index] = vb;
>> vb->index = index;
>> vb->vb2_queue = q;
>> + set_bit(index, q->bufs_bitmap);
>> }
>>
>> /**
>> @@ -429,6 +430,7 @@ static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, uns
>> */
>> static void vb2_queue_remove_buffer(struct vb2_buffer *vb)
>> {
>> + clear_bit(vb->index, vb->vb2_queue->bufs_bitmap);
>> vb->vb2_queue->bufs[vb->index] = NULL;
>> vb->vb2_queue = NULL;
>> }
>> @@ -450,11 +452,12 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
>> unsigned long index;
>> int ret;
>>
>> - /* Ensure that the number of already queue + num_buffers is below q->max_num_buffers */
>> + /* Ensure that vb2_get_num_buffers(q) + num_buffers is no more than q->max_num_buffers */
>> num_buffers = min_t(unsigned int, num_buffers,
>> q->max_num_buffers - vb2_get_num_buffers(q));
>>
>> - index = vb2_get_num_buffers(q);
>> + index = bitmap_find_next_zero_area(q->bufs_bitmap, q->max_num_buffers,
>> + 0, num_buffers, 0);
>>
>> *first_index = index;
>>
>> @@ -656,7 +659,6 @@ static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
>> kfree(vb);
>> }
>>
>> - q->num_buffers -= buffers;
>> if (!vb2_get_num_buffers(q)) {
>> q->memory = VB2_MEMORY_UNKNOWN;
>> INIT_LIST_HEAD(&q->queued_list);
>> @@ -874,6 +876,14 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
>> q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
>> if (!q->bufs)
>> ret = -ENOMEM;
>> +
>> + if (!q->bufs_bitmap)
>> + q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
>> + if (!q->bufs_bitmap) {
>> + ret = -ENOMEM;
>> + kfree(q->bufs);
>> + q->bufs = NULL;
>> + }
>> q->memory = memory;
>> mutex_unlock(&q->mmap_lock);
>> if (ret)
>> @@ -943,7 +953,6 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
>> }
>>
>> mutex_lock(&q->mmap_lock);
>> - q->num_buffers = allocated_buffers;
>>
>> if (ret < 0) {
>> /*
>> @@ -970,6 +979,10 @@ int vb2_core_reqbufs(struct vb2_queue *q, enum vb2_memory memory,
>> mutex_lock(&q->mmap_lock);
>> q->memory = VB2_MEMORY_UNKNOWN;
>> mutex_unlock(&q->mmap_lock);
>> + kfree(q->bufs);
>> + q->bufs = NULL;
>> + bitmap_free(q->bufs_bitmap);
>> + q->bufs_bitmap = NULL;
>> return ret;
>> }
>> EXPORT_SYMBOL_GPL(vb2_core_reqbufs);
>> @@ -1006,9 +1019,19 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> q->memory = memory;
>> if (!q->bufs)
>> q->bufs = kcalloc(q->max_num_buffers, sizeof(*q->bufs), GFP_KERNEL);
>> - if (!q->bufs)
>> + if (!q->bufs) {
>> ret = -ENOMEM;
>> + goto unlock;
>> + }
>> + if (!q->bufs_bitmap)
>> + q->bufs_bitmap = bitmap_zalloc(q->max_num_buffers, GFP_KERNEL);
> Same as with the kcalloc(). Why not just allocate this in the core code,
> e.g. vb2_core_queue_init()?
>
> Actually, is it because we want to avoid allocating
> resources early, before the need to actually use the vb2 queue?
> If so, could this go to some other core function that runs later, e.g. __vb2_queue_alloc()?
For the same reason :-)
vb2_core_queue_init() and vb2_core_queue_release() aren't balanced so I can't use them for that.
>
>> + if (!q->bufs_bitmap) {
>> + ret = -ENOMEM;
>> + kfree(q->bufs);
>> + q->bufs = NULL;
>> + }
>> mutex_unlock(&q->mmap_lock);
>> +unlock:
>> if (ret)
>> return ret;
>> q->waiting_for_buffers = !q->is_output;
>> @@ -1070,7 +1093,6 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> }
>>
>> mutex_lock(&q->mmap_lock);
>> - q->num_buffers += allocated_buffers;
>>
>> if (ret < 0) {
>> /*
>> @@ -2549,7 +2571,9 @@ void vb2_core_queue_release(struct vb2_queue *q)
>> __vb2_queue_free(q, q->max_num_buffers);
>> kfree(q->bufs);
>> q->bufs = NULL;
>> - q->num_buffers = 0;
>> + bitmap_free(q->bufs_bitmap);
>> + q->bufs_bitmap = NULL;
>> +
>> mutex_unlock(&q->mmap_lock);
>> }
>> EXPORT_SYMBOL_GPL(vb2_core_queue_release);
>> @@ -2904,7 +2928,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
>> * Check if we need to dequeue the buffer.
>> */
>> index = fileio->cur_index;
>> - if (index >= q->num_buffers) {
>> + if (!test_bit(index, q->bufs_bitmap)) {
> I don't like this low level manipulation of queue internals here (after all
> the work other patches did to use helpers). Why not just keep
> vb2_get_num_buffers() here?
I will change that and put it in patch 8
>
>> struct vb2_buffer *b;
>>
>> /*
>> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
>> index 6986ff4b77cd..288477075a0e 100644
>> --- a/include/media/videobuf2-core.h
>> +++ b/include/media/videobuf2-core.h
>> @@ -346,7 +346,7 @@ struct vb2_buffer {
>> * describes the requested number of planes and sizes\[\]
>> * contains the requested plane sizes. In this case
>> * \*num_buffers are being allocated additionally to
>> - * q->num_buffers. If either \*num_planes or the requested
>> + * queue buffers. If either \*num_planes or the requested
> Perhaps "the buffers already in the queue"?
ok
>
>> * sizes are invalid callback must return %-EINVAL.
>> * @wait_prepare: release any locks taken while calling vb2 functions;
>> * it is called before an ioctl needs to wait for a new
>> @@ -557,7 +557,7 @@ struct vb2_buf_ops {
>> * @memory: current memory type used
>> * @dma_dir: DMA mapping direction.
>> * @bufs: videobuf2 buffer structures
>> - * @num_buffers: number of allocated/used buffers
>> + * @bufs_bitmap: bitmap to manage bufs entries.
> Perhaps "bitmap tracking whether each bufs[] entry is used"?
ok
>
>> * @max_num_buffers: upper limit of number of allocated/used buffers
>> * @queued_list: list of buffers currently queued from userspace
>> * @queued_count: number of buffers queued and ready for streaming.
>> @@ -621,7 +621,7 @@ struct vb2_queue {
>> unsigned int memory;
>> enum dma_data_direction dma_dir;
>> struct vb2_buffer **bufs;
>> - unsigned int num_buffers;
>> + unsigned long *bufs_bitmap;
>> unsigned int max_num_buffers;
>>
>> struct list_head queued_list;
>> @@ -1150,7 +1150,10 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
>> */
>> static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
>> {
>> - return q->num_buffers;
>> + if (!q->bufs_bitmap)
>> + return 0;
>> +
>> + return bitmap_weight(q->bufs_bitmap, q->max_num_buffers);
> Hmm, could we just cache the number of buffers we have, so that we don't
> have to go over the entire bitmap every time? (Basically just keep the
> code that we had for handling q->num_buffers before this patch.)
I would prefer no duplicate how the number of buffers in a queue is computed
and bitmap offer helpers for that. Why not use it ?
>
>> }
>>
>> /**
>> @@ -1253,13 +1256,13 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
>> static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
>> unsigned int index)
>> {
>> - if (!q->bufs)
>> + if (!q->bufs_bitmap)
>> return NULL;
>>
>> if (index >= q->max_num_buffers)
>> return NULL;
>>
>> - if (index < q->num_buffers)
>> + if (test_bit(index, q->bufs_bitmap))
> Aha, I see why we need the extra condition above now. Perhaps it should've
> been added in this patch instead?
For me it was more explicit do introduce it at the same time that
max_num_buffers field.
Regards,
Benjamin
>
>> return q->bufs[index];
>> return NULL;
>> }
>> --
>> 2.39.2
>>
> Best regards,
> Tomasz
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 04/56] media: videobuf2: Use vb2_buffer instead of index
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-08 15:52 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 15:52 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Directly use vb2_buffer pointer instead of index inside queue array.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 40 +++++----------
> .../media/common/videobuf2/videobuf2-v4l2.c | 51 +++++++++++--------
> drivers/media/dvb-core/dvb_vb2.c | 6 +--
> include/media/videobuf2-core.h | 16 +++---
> 4 files changed, 53 insertions(+), 60 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 47dba2a20d73..968b7c0e7934 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -654,9 +654,9 @@ static bool __buffers_in_use(struct vb2_queue *q)
> return false;
> }
>
> -void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb)
> +void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> {
> - call_void_bufop(q, fill_user_buffer, q->bufs[index], pb);
> + call_void_bufop(q, fill_user_buffer, vb, pb);
> }
> EXPORT_SYMBOL_GPL(vb2_core_querybuf);
>
> @@ -1490,9 +1490,6 @@ static void vb2_req_unprepare(struct media_request_object *obj)
> WARN_ON(!vb->req_obj.req);
> }
>
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> - struct media_request *req);
> -
To my taste the removal of vb2_core_qbuf() prototype is not about
"directly using vb2_buffer pointer", so I'd prefer it as a separate
cleanup patch. Not a big deal, though, I can live with this chunk
as it is.
> static void vb2_req_queue(struct media_request_object *obj)
> {
> struct vb2_buffer *vb = container_of(obj, struct vb2_buffer, req_obj);
> @@ -1507,7 +1504,7 @@ static void vb2_req_queue(struct media_request_object *obj)
> * set. We just ignore that, and expect this will be caught the
> * next time vb2_req_prepare() is called.
> */
> - err = vb2_core_qbuf(vb->vb2_queue, vb->index, NULL, NULL);
> + err = vb2_core_qbuf(vb->vb2_queue, vb, NULL, NULL);
> WARN_ON_ONCE(err && err != -EIO);
> mutex_unlock(vb->vb2_queue->lock);
> }
> @@ -1562,12 +1559,10 @@ unsigned int vb2_request_buffer_cnt(struct media_request *req)
> }
> EXPORT_SYMBOL_GPL(vb2_request_buffer_cnt);
>
> -int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb)
> +int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> {
> - struct vb2_buffer *vb;
> int ret;
>
> - vb = q->bufs[index];
> if (vb->state != VB2_BUF_STATE_DEQUEUED) {
> dprintk(q, 1, "invalid buffer state %s\n",
> vb2_state_name(vb->state));
> @@ -1654,10 +1649,9 @@ static int vb2_start_streaming(struct vb2_queue *q)
> return ret;
> }
>
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> +int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
> struct media_request *req)
> {
> - struct vb2_buffer *vb;
> enum vb2_buffer_state orig_state;
> int ret;
>
> @@ -1666,8 +1660,6 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> return -EIO;
> }
>
> - vb = q->bufs[index];
> -
> if (!req && vb->state != VB2_BUF_STATE_IN_REQUEST &&
> q->requires_requests) {
> dprintk(q, 1, "qbuf requires a request\n");
> @@ -2240,9 +2232,8 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
> }
>
> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> - unsigned int index, unsigned int plane, unsigned int flags)
> + struct vb2_buffer *vb, unsigned int plane, unsigned int flags)
> {
> - struct vb2_buffer *vb = NULL;
> struct vb2_plane *vb_plane;
> int ret;
> struct dma_buf *dbuf;
> @@ -2267,13 +2258,6 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> return -EINVAL;
> }
>
> - if (index >= q->num_buffers) {
> - dprintk(q, 1, "buffer index out of range\n");
> - return -EINVAL;
> - }
> -
> - vb = q->bufs[index];
> -
> if (plane >= vb->num_planes) {
> dprintk(q, 1, "buffer plane out of range\n");
> return -EINVAL;
> @@ -2292,20 +2276,20 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> flags & O_ACCMODE);
> if (IS_ERR_OR_NULL(dbuf)) {
> dprintk(q, 1, "failed to export buffer %d, plane %d\n",
> - index, plane);
> + vb->index, plane);
> return -EINVAL;
> }
>
> ret = dma_buf_fd(dbuf, flags & ~O_ACCMODE);
> if (ret < 0) {
> dprintk(q, 3, "buffer %d, plane %d failed to export (%d)\n",
> - index, plane, ret);
> + vb->index, plane, ret);
> dma_buf_put(dbuf);
> return ret;
> }
>
> dprintk(q, 3, "buffer %d, plane %d exported as %d descriptor\n",
> - index, plane, ret);
> + vb->index, plane, ret);
> *fd = ret;
>
> return 0;
> @@ -2710,7 +2694,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> * Queue all buffers.
> */
> for (i = 0; i < q->num_buffers; i++) {
> - ret = vb2_core_qbuf(q, i, NULL, NULL);
> + ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
> if (ret)
> goto err_reqbufs;
> fileio->bufs[i].queued = 1;
> @@ -2895,7 +2879,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
>
> if (copy_timestamp)
> b->timestamp = ktime_get_ns();
> - ret = vb2_core_qbuf(q, index, NULL, NULL);
> + ret = vb2_core_qbuf(q, b, NULL, NULL);
> dprintk(q, 5, "vb2_qbuf result: %d\n", ret);
> if (ret)
> return ret;
> @@ -2998,7 +2982,7 @@ static int vb2_thread(void *data)
> if (copy_timestamp)
> vb->timestamp = ktime_get_ns();
> if (!threadio->stop)
> - ret = vb2_core_qbuf(q, vb->index, NULL, NULL);
> + ret = vb2_core_qbuf(q, vb, NULL, NULL);
> call_void_qop(q, wait_prepare, q);
> if (ret || threadio->stop)
> break;
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index c7a54d82a55e..d19d82a75ac6 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -364,13 +364,12 @@ static void set_buffer_cache_hints(struct vb2_queue *q,
> }
>
> static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> - struct v4l2_buffer *b, bool is_prepare,
> - struct media_request **p_req)
> + struct vb2_buffer *vb, struct v4l2_buffer *b,
> + bool is_prepare, struct media_request **p_req)
> {
> const char *opname = is_prepare ? "prepare_buf" : "qbuf";
> struct media_request *req;
> struct vb2_v4l2_buffer *vbuf;
> - struct vb2_buffer *vb;
> int ret;
>
> if (b->type != q->type) {
> @@ -378,23 +377,11 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
> return -EINVAL;
> }
>
> - if (b->index >= q->num_buffers) {
> - dprintk(q, 1, "%s: buffer index out of range\n", opname);
> - return -EINVAL;
> - }
> -
> - if (q->bufs[b->index] == NULL) {
> - /* Should never happen */
> - dprintk(q, 1, "%s: buffer is NULL\n", opname);
> - return -EINVAL;
> - }
> -
> if (b->memory != q->memory) {
> dprintk(q, 1, "%s: invalid memory type\n", opname);
> return -EINVAL;
> }
>
> - vb = q->bufs[b->index];
> vbuf = to_vb2_v4l2_buffer(vb);
> ret = __verify_planes_array(vb, b);
> if (ret)
> @@ -667,7 +654,7 @@ int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b)
> vb = q->bufs[b->index];
> ret = __verify_planes_array(vb, b);
> if (!ret)
> - vb2_core_querybuf(q, b->index, b);
> + vb2_core_querybuf(q, vb, b);
> return ret;
> }
> EXPORT_SYMBOL(vb2_querybuf);
> @@ -723,6 +710,7 @@ EXPORT_SYMBOL_GPL(vb2_reqbufs);
> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> struct v4l2_buffer *b)
> {
> + struct vb2_buffer *vb;
> int ret;
>
> if (vb2_fileio_is_active(q)) {
> @@ -733,9 +721,15 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> if (b->flags & V4L2_BUF_FLAG_REQUEST_FD)
> return -EINVAL;
>
> - ret = vb2_queue_or_prepare_buf(q, mdev, b, true, NULL);
> + if (b->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[b->index];
>
> - return ret ? ret : vb2_core_prepare_buf(q, b->index, b);
> + ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, true, NULL);
> +
> + return ret ? ret : vb2_core_prepare_buf(q, vb, b);
> }
> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
>
> @@ -803,6 +797,7 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
> struct v4l2_buffer *b)
> {
> struct media_request *req = NULL;
> + struct vb2_buffer *vb;
> int ret;
>
> if (vb2_fileio_is_active(q)) {
> @@ -810,10 +805,16 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
> return -EBUSY;
> }
>
> - ret = vb2_queue_or_prepare_buf(q, mdev, b, false, &req);
> + if (b->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[b->index];
> +
> + ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, false, &req);
> if (ret)
> return ret;
> - ret = vb2_core_qbuf(q, b->index, b, req);
> + ret = vb2_core_qbuf(q, vb, b, req);
> if (req)
> media_request_put(req);
> return ret;
> @@ -873,7 +874,15 @@ EXPORT_SYMBOL_GPL(vb2_streamoff);
>
> int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
> {
> - return vb2_core_expbuf(q, &eb->fd, eb->type, eb->index,
> + struct vb2_buffer *vb;
> +
> + if (eb->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[eb->index];
> +
> + return vb2_core_expbuf(q, &eb->fd, eb->type, vb,
> eb->plane, eb->flags);
> }
> EXPORT_SYMBOL_GPL(vb2_expbuf);
> diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
> index 909df82fed33..b322ef179f05 100644
> --- a/drivers/media/dvb-core/dvb_vb2.c
> +++ b/drivers/media/dvb-core/dvb_vb2.c
> @@ -360,7 +360,7 @@ int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> return -EINVAL;
> }
> - vb2_core_querybuf(&ctx->vb_q, b->index, b);
> + vb2_core_querybuf(&ctx->vb_q, q->bufs[b->index], b);
> dprintk(3, "[%s] index=%d\n", ctx->name, b->index);
> return 0;
> }
> @@ -370,7 +370,7 @@ int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp)
> struct vb2_queue *q = &ctx->vb_q;
> int ret;
>
> - ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, exp->index,
> + ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, q->bufs[exp->index],
> 0, exp->flags);
> if (ret) {
> dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
> @@ -391,7 +391,7 @@ int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> return -EINVAL;
> }
> - ret = vb2_core_qbuf(&ctx->vb_q, b->index, b, NULL);
> + ret = vb2_core_qbuf(&ctx->vb_q, q->bufs[b->index], b, NULL);
> if (ret) {
> dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
> b->index, ret);
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index 4b6a9d2ea372..cd3ff1cd759d 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -747,7 +747,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
> /**
> * vb2_core_querybuf() - query video buffer information.
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
It seems to me that in the doc comments the convention is to put the
ampersand before the word "struct". There are several instances
of this.
With this either confirmed to be intentional or corrected to follow
other uses you can add my
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> * @pb: buffer struct passed from userspace.
> *
> * Videobuf2 core helper to implement VIDIOC_QUERYBUF() operation. It is called
> @@ -759,7 +759,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb);
> +void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>
> /**
> * vb2_core_reqbufs() - Initiate streaming.
> @@ -823,7 +823,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> * vb2_core_prepare_buf() - Pass ownership of a buffer from userspace
> * to the kernel.
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
> * @pb: buffer structure passed from userspace to
> * &v4l2_ioctl_ops->vidioc_prepare_buf handler in driver.
> *
> @@ -839,13 +839,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
> +int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>
> /**
> * vb2_core_qbuf() - Queue a buffer from userspace
> *
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer
> + * @vb: pointer to struct &vb2_buffer.
> * @pb: buffer structure passed from userspace to
> * v4l2_ioctl_ops->vidioc_qbuf handler in driver
> * @req: pointer to &struct media_request, may be NULL.
> @@ -867,7 +867,7 @@ int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> +int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
> struct media_request *req);
>
> /**
> @@ -931,7 +931,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
> * @fd: pointer to the file descriptor associated with DMABUF
> * (set by driver).
> * @type: buffer type.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
> * @plane: index of the plane to be exported, 0 for single plane queues
> * @flags: file flags for newly created file, as defined at
> * include/uapi/asm-generic/fcntl.h.
> @@ -945,7 +945,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
> * Return: returns zero on success; an error code otherwise.
> */
> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> - unsigned int index, unsigned int plane, unsigned int flags);
> + struct vb2_buffer *vb, unsigned int plane, unsigned int flags);
>
> /**
> * vb2_core_queue_init() - initialize a videobuf2 queue
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 04/56] media: videobuf2: Use vb2_buffer instead of index
@ 2023-11-08 15:52 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 15:52 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Directly use vb2_buffer pointer instead of index inside queue array.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 40 +++++----------
> .../media/common/videobuf2/videobuf2-v4l2.c | 51 +++++++++++--------
> drivers/media/dvb-core/dvb_vb2.c | 6 +--
> include/media/videobuf2-core.h | 16 +++---
> 4 files changed, 53 insertions(+), 60 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 47dba2a20d73..968b7c0e7934 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -654,9 +654,9 @@ static bool __buffers_in_use(struct vb2_queue *q)
> return false;
> }
>
> -void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb)
> +void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> {
> - call_void_bufop(q, fill_user_buffer, q->bufs[index], pb);
> + call_void_bufop(q, fill_user_buffer, vb, pb);
> }
> EXPORT_SYMBOL_GPL(vb2_core_querybuf);
>
> @@ -1490,9 +1490,6 @@ static void vb2_req_unprepare(struct media_request_object *obj)
> WARN_ON(!vb->req_obj.req);
> }
>
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> - struct media_request *req);
> -
To my taste the removal of vb2_core_qbuf() prototype is not about
"directly using vb2_buffer pointer", so I'd prefer it as a separate
cleanup patch. Not a big deal, though, I can live with this chunk
as it is.
> static void vb2_req_queue(struct media_request_object *obj)
> {
> struct vb2_buffer *vb = container_of(obj, struct vb2_buffer, req_obj);
> @@ -1507,7 +1504,7 @@ static void vb2_req_queue(struct media_request_object *obj)
> * set. We just ignore that, and expect this will be caught the
> * next time vb2_req_prepare() is called.
> */
> - err = vb2_core_qbuf(vb->vb2_queue, vb->index, NULL, NULL);
> + err = vb2_core_qbuf(vb->vb2_queue, vb, NULL, NULL);
> WARN_ON_ONCE(err && err != -EIO);
> mutex_unlock(vb->vb2_queue->lock);
> }
> @@ -1562,12 +1559,10 @@ unsigned int vb2_request_buffer_cnt(struct media_request *req)
> }
> EXPORT_SYMBOL_GPL(vb2_request_buffer_cnt);
>
> -int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb)
> +int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> {
> - struct vb2_buffer *vb;
> int ret;
>
> - vb = q->bufs[index];
> if (vb->state != VB2_BUF_STATE_DEQUEUED) {
> dprintk(q, 1, "invalid buffer state %s\n",
> vb2_state_name(vb->state));
> @@ -1654,10 +1649,9 @@ static int vb2_start_streaming(struct vb2_queue *q)
> return ret;
> }
>
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> +int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
> struct media_request *req)
> {
> - struct vb2_buffer *vb;
> enum vb2_buffer_state orig_state;
> int ret;
>
> @@ -1666,8 +1660,6 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> return -EIO;
> }
>
> - vb = q->bufs[index];
> -
> if (!req && vb->state != VB2_BUF_STATE_IN_REQUEST &&
> q->requires_requests) {
> dprintk(q, 1, "qbuf requires a request\n");
> @@ -2240,9 +2232,8 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
> }
>
> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> - unsigned int index, unsigned int plane, unsigned int flags)
> + struct vb2_buffer *vb, unsigned int plane, unsigned int flags)
> {
> - struct vb2_buffer *vb = NULL;
> struct vb2_plane *vb_plane;
> int ret;
> struct dma_buf *dbuf;
> @@ -2267,13 +2258,6 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> return -EINVAL;
> }
>
> - if (index >= q->num_buffers) {
> - dprintk(q, 1, "buffer index out of range\n");
> - return -EINVAL;
> - }
> -
> - vb = q->bufs[index];
> -
> if (plane >= vb->num_planes) {
> dprintk(q, 1, "buffer plane out of range\n");
> return -EINVAL;
> @@ -2292,20 +2276,20 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> flags & O_ACCMODE);
> if (IS_ERR_OR_NULL(dbuf)) {
> dprintk(q, 1, "failed to export buffer %d, plane %d\n",
> - index, plane);
> + vb->index, plane);
> return -EINVAL;
> }
>
> ret = dma_buf_fd(dbuf, flags & ~O_ACCMODE);
> if (ret < 0) {
> dprintk(q, 3, "buffer %d, plane %d failed to export (%d)\n",
> - index, plane, ret);
> + vb->index, plane, ret);
> dma_buf_put(dbuf);
> return ret;
> }
>
> dprintk(q, 3, "buffer %d, plane %d exported as %d descriptor\n",
> - index, plane, ret);
> + vb->index, plane, ret);
> *fd = ret;
>
> return 0;
> @@ -2710,7 +2694,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> * Queue all buffers.
> */
> for (i = 0; i < q->num_buffers; i++) {
> - ret = vb2_core_qbuf(q, i, NULL, NULL);
> + ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
> if (ret)
> goto err_reqbufs;
> fileio->bufs[i].queued = 1;
> @@ -2895,7 +2879,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
>
> if (copy_timestamp)
> b->timestamp = ktime_get_ns();
> - ret = vb2_core_qbuf(q, index, NULL, NULL);
> + ret = vb2_core_qbuf(q, b, NULL, NULL);
> dprintk(q, 5, "vb2_qbuf result: %d\n", ret);
> if (ret)
> return ret;
> @@ -2998,7 +2982,7 @@ static int vb2_thread(void *data)
> if (copy_timestamp)
> vb->timestamp = ktime_get_ns();
> if (!threadio->stop)
> - ret = vb2_core_qbuf(q, vb->index, NULL, NULL);
> + ret = vb2_core_qbuf(q, vb, NULL, NULL);
> call_void_qop(q, wait_prepare, q);
> if (ret || threadio->stop)
> break;
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index c7a54d82a55e..d19d82a75ac6 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -364,13 +364,12 @@ static void set_buffer_cache_hints(struct vb2_queue *q,
> }
>
> static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> - struct v4l2_buffer *b, bool is_prepare,
> - struct media_request **p_req)
> + struct vb2_buffer *vb, struct v4l2_buffer *b,
> + bool is_prepare, struct media_request **p_req)
> {
> const char *opname = is_prepare ? "prepare_buf" : "qbuf";
> struct media_request *req;
> struct vb2_v4l2_buffer *vbuf;
> - struct vb2_buffer *vb;
> int ret;
>
> if (b->type != q->type) {
> @@ -378,23 +377,11 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
> return -EINVAL;
> }
>
> - if (b->index >= q->num_buffers) {
> - dprintk(q, 1, "%s: buffer index out of range\n", opname);
> - return -EINVAL;
> - }
> -
> - if (q->bufs[b->index] == NULL) {
> - /* Should never happen */
> - dprintk(q, 1, "%s: buffer is NULL\n", opname);
> - return -EINVAL;
> - }
> -
> if (b->memory != q->memory) {
> dprintk(q, 1, "%s: invalid memory type\n", opname);
> return -EINVAL;
> }
>
> - vb = q->bufs[b->index];
> vbuf = to_vb2_v4l2_buffer(vb);
> ret = __verify_planes_array(vb, b);
> if (ret)
> @@ -667,7 +654,7 @@ int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b)
> vb = q->bufs[b->index];
> ret = __verify_planes_array(vb, b);
> if (!ret)
> - vb2_core_querybuf(q, b->index, b);
> + vb2_core_querybuf(q, vb, b);
> return ret;
> }
> EXPORT_SYMBOL(vb2_querybuf);
> @@ -723,6 +710,7 @@ EXPORT_SYMBOL_GPL(vb2_reqbufs);
> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> struct v4l2_buffer *b)
> {
> + struct vb2_buffer *vb;
> int ret;
>
> if (vb2_fileio_is_active(q)) {
> @@ -733,9 +721,15 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> if (b->flags & V4L2_BUF_FLAG_REQUEST_FD)
> return -EINVAL;
>
> - ret = vb2_queue_or_prepare_buf(q, mdev, b, true, NULL);
> + if (b->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[b->index];
>
> - return ret ? ret : vb2_core_prepare_buf(q, b->index, b);
> + ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, true, NULL);
> +
> + return ret ? ret : vb2_core_prepare_buf(q, vb, b);
> }
> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
>
> @@ -803,6 +797,7 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
> struct v4l2_buffer *b)
> {
> struct media_request *req = NULL;
> + struct vb2_buffer *vb;
> int ret;
>
> if (vb2_fileio_is_active(q)) {
> @@ -810,10 +805,16 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
> return -EBUSY;
> }
>
> - ret = vb2_queue_or_prepare_buf(q, mdev, b, false, &req);
> + if (b->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[b->index];
> +
> + ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, false, &req);
> if (ret)
> return ret;
> - ret = vb2_core_qbuf(q, b->index, b, req);
> + ret = vb2_core_qbuf(q, vb, b, req);
> if (req)
> media_request_put(req);
> return ret;
> @@ -873,7 +874,15 @@ EXPORT_SYMBOL_GPL(vb2_streamoff);
>
> int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
> {
> - return vb2_core_expbuf(q, &eb->fd, eb->type, eb->index,
> + struct vb2_buffer *vb;
> +
> + if (eb->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[eb->index];
> +
> + return vb2_core_expbuf(q, &eb->fd, eb->type, vb,
> eb->plane, eb->flags);
> }
> EXPORT_SYMBOL_GPL(vb2_expbuf);
> diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
> index 909df82fed33..b322ef179f05 100644
> --- a/drivers/media/dvb-core/dvb_vb2.c
> +++ b/drivers/media/dvb-core/dvb_vb2.c
> @@ -360,7 +360,7 @@ int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> return -EINVAL;
> }
> - vb2_core_querybuf(&ctx->vb_q, b->index, b);
> + vb2_core_querybuf(&ctx->vb_q, q->bufs[b->index], b);
> dprintk(3, "[%s] index=%d\n", ctx->name, b->index);
> return 0;
> }
> @@ -370,7 +370,7 @@ int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp)
> struct vb2_queue *q = &ctx->vb_q;
> int ret;
>
> - ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, exp->index,
> + ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, q->bufs[exp->index],
> 0, exp->flags);
> if (ret) {
> dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
> @@ -391,7 +391,7 @@ int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> return -EINVAL;
> }
> - ret = vb2_core_qbuf(&ctx->vb_q, b->index, b, NULL);
> + ret = vb2_core_qbuf(&ctx->vb_q, q->bufs[b->index], b, NULL);
> if (ret) {
> dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
> b->index, ret);
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index 4b6a9d2ea372..cd3ff1cd759d 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -747,7 +747,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
> /**
> * vb2_core_querybuf() - query video buffer information.
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
It seems to me that in the doc comments the convention is to put the
ampersand before the word "struct". There are several instances
of this.
With this either confirmed to be intentional or corrected to follow
other uses you can add my
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> * @pb: buffer struct passed from userspace.
> *
> * Videobuf2 core helper to implement VIDIOC_QUERYBUF() operation. It is called
> @@ -759,7 +759,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb);
> +void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>
> /**
> * vb2_core_reqbufs() - Initiate streaming.
> @@ -823,7 +823,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> * vb2_core_prepare_buf() - Pass ownership of a buffer from userspace
> * to the kernel.
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
> * @pb: buffer structure passed from userspace to
> * &v4l2_ioctl_ops->vidioc_prepare_buf handler in driver.
> *
> @@ -839,13 +839,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
> +int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>
> /**
> * vb2_core_qbuf() - Queue a buffer from userspace
> *
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer
> + * @vb: pointer to struct &vb2_buffer.
> * @pb: buffer structure passed from userspace to
> * v4l2_ioctl_ops->vidioc_qbuf handler in driver
> * @req: pointer to &struct media_request, may be NULL.
> @@ -867,7 +867,7 @@ int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> +int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
> struct media_request *req);
>
> /**
> @@ -931,7 +931,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
> * @fd: pointer to the file descriptor associated with DMABUF
> * (set by driver).
> * @type: buffer type.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
> * @plane: index of the plane to be exported, 0 for single plane queues
> * @flags: file flags for newly created file, as defined at
> * include/uapi/asm-generic/fcntl.h.
> @@ -945,7 +945,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
> * Return: returns zero on success; an error code otherwise.
> */
> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> - unsigned int index, unsigned int plane, unsigned int flags);
> + struct vb2_buffer *vb, unsigned int plane, unsigned int flags);
>
> /**
> * vb2_core_queue_init() - initialize a videobuf2 queue
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 04/56] media: videobuf2: Use vb2_buffer instead of index
@ 2023-11-08 15:52 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 15:52 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Directly use vb2_buffer pointer instead of index inside queue array.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 40 +++++----------
> .../media/common/videobuf2/videobuf2-v4l2.c | 51 +++++++++++--------
> drivers/media/dvb-core/dvb_vb2.c | 6 +--
> include/media/videobuf2-core.h | 16 +++---
> 4 files changed, 53 insertions(+), 60 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 47dba2a20d73..968b7c0e7934 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -654,9 +654,9 @@ static bool __buffers_in_use(struct vb2_queue *q)
> return false;
> }
>
> -void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb)
> +void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> {
> - call_void_bufop(q, fill_user_buffer, q->bufs[index], pb);
> + call_void_bufop(q, fill_user_buffer, vb, pb);
> }
> EXPORT_SYMBOL_GPL(vb2_core_querybuf);
>
> @@ -1490,9 +1490,6 @@ static void vb2_req_unprepare(struct media_request_object *obj)
> WARN_ON(!vb->req_obj.req);
> }
>
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> - struct media_request *req);
> -
To my taste the removal of vb2_core_qbuf() prototype is not about
"directly using vb2_buffer pointer", so I'd prefer it as a separate
cleanup patch. Not a big deal, though, I can live with this chunk
as it is.
> static void vb2_req_queue(struct media_request_object *obj)
> {
> struct vb2_buffer *vb = container_of(obj, struct vb2_buffer, req_obj);
> @@ -1507,7 +1504,7 @@ static void vb2_req_queue(struct media_request_object *obj)
> * set. We just ignore that, and expect this will be caught the
> * next time vb2_req_prepare() is called.
> */
> - err = vb2_core_qbuf(vb->vb2_queue, vb->index, NULL, NULL);
> + err = vb2_core_qbuf(vb->vb2_queue, vb, NULL, NULL);
> WARN_ON_ONCE(err && err != -EIO);
> mutex_unlock(vb->vb2_queue->lock);
> }
> @@ -1562,12 +1559,10 @@ unsigned int vb2_request_buffer_cnt(struct media_request *req)
> }
> EXPORT_SYMBOL_GPL(vb2_request_buffer_cnt);
>
> -int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb)
> +int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> {
> - struct vb2_buffer *vb;
> int ret;
>
> - vb = q->bufs[index];
> if (vb->state != VB2_BUF_STATE_DEQUEUED) {
> dprintk(q, 1, "invalid buffer state %s\n",
> vb2_state_name(vb->state));
> @@ -1654,10 +1649,9 @@ static int vb2_start_streaming(struct vb2_queue *q)
> return ret;
> }
>
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> +int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
> struct media_request *req)
> {
> - struct vb2_buffer *vb;
> enum vb2_buffer_state orig_state;
> int ret;
>
> @@ -1666,8 +1660,6 @@ int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> return -EIO;
> }
>
> - vb = q->bufs[index];
> -
> if (!req && vb->state != VB2_BUF_STATE_IN_REQUEST &&
> q->requires_requests) {
> dprintk(q, 1, "qbuf requires a request\n");
> @@ -2240,9 +2232,8 @@ static int __find_plane_by_offset(struct vb2_queue *q, unsigned long offset,
> }
>
> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> - unsigned int index, unsigned int plane, unsigned int flags)
> + struct vb2_buffer *vb, unsigned int plane, unsigned int flags)
> {
> - struct vb2_buffer *vb = NULL;
> struct vb2_plane *vb_plane;
> int ret;
> struct dma_buf *dbuf;
> @@ -2267,13 +2258,6 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> return -EINVAL;
> }
>
> - if (index >= q->num_buffers) {
> - dprintk(q, 1, "buffer index out of range\n");
> - return -EINVAL;
> - }
> -
> - vb = q->bufs[index];
> -
> if (plane >= vb->num_planes) {
> dprintk(q, 1, "buffer plane out of range\n");
> return -EINVAL;
> @@ -2292,20 +2276,20 @@ int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> flags & O_ACCMODE);
> if (IS_ERR_OR_NULL(dbuf)) {
> dprintk(q, 1, "failed to export buffer %d, plane %d\n",
> - index, plane);
> + vb->index, plane);
> return -EINVAL;
> }
>
> ret = dma_buf_fd(dbuf, flags & ~O_ACCMODE);
> if (ret < 0) {
> dprintk(q, 3, "buffer %d, plane %d failed to export (%d)\n",
> - index, plane, ret);
> + vb->index, plane, ret);
> dma_buf_put(dbuf);
> return ret;
> }
>
> dprintk(q, 3, "buffer %d, plane %d exported as %d descriptor\n",
> - index, plane, ret);
> + vb->index, plane, ret);
> *fd = ret;
>
> return 0;
> @@ -2710,7 +2694,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> * Queue all buffers.
> */
> for (i = 0; i < q->num_buffers; i++) {
> - ret = vb2_core_qbuf(q, i, NULL, NULL);
> + ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
> if (ret)
> goto err_reqbufs;
> fileio->bufs[i].queued = 1;
> @@ -2895,7 +2879,7 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
>
> if (copy_timestamp)
> b->timestamp = ktime_get_ns();
> - ret = vb2_core_qbuf(q, index, NULL, NULL);
> + ret = vb2_core_qbuf(q, b, NULL, NULL);
> dprintk(q, 5, "vb2_qbuf result: %d\n", ret);
> if (ret)
> return ret;
> @@ -2998,7 +2982,7 @@ static int vb2_thread(void *data)
> if (copy_timestamp)
> vb->timestamp = ktime_get_ns();
> if (!threadio->stop)
> - ret = vb2_core_qbuf(q, vb->index, NULL, NULL);
> + ret = vb2_core_qbuf(q, vb, NULL, NULL);
> call_void_qop(q, wait_prepare, q);
> if (ret || threadio->stop)
> break;
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index c7a54d82a55e..d19d82a75ac6 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -364,13 +364,12 @@ static void set_buffer_cache_hints(struct vb2_queue *q,
> }
>
> static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> - struct v4l2_buffer *b, bool is_prepare,
> - struct media_request **p_req)
> + struct vb2_buffer *vb, struct v4l2_buffer *b,
> + bool is_prepare, struct media_request **p_req)
> {
> const char *opname = is_prepare ? "prepare_buf" : "qbuf";
> struct media_request *req;
> struct vb2_v4l2_buffer *vbuf;
> - struct vb2_buffer *vb;
> int ret;
>
> if (b->type != q->type) {
> @@ -378,23 +377,11 @@ static int vb2_queue_or_prepare_buf(struct vb2_queue *q, struct media_device *md
> return -EINVAL;
> }
>
> - if (b->index >= q->num_buffers) {
> - dprintk(q, 1, "%s: buffer index out of range\n", opname);
> - return -EINVAL;
> - }
> -
> - if (q->bufs[b->index] == NULL) {
> - /* Should never happen */
> - dprintk(q, 1, "%s: buffer is NULL\n", opname);
> - return -EINVAL;
> - }
> -
> if (b->memory != q->memory) {
> dprintk(q, 1, "%s: invalid memory type\n", opname);
> return -EINVAL;
> }
>
> - vb = q->bufs[b->index];
> vbuf = to_vb2_v4l2_buffer(vb);
> ret = __verify_planes_array(vb, b);
> if (ret)
> @@ -667,7 +654,7 @@ int vb2_querybuf(struct vb2_queue *q, struct v4l2_buffer *b)
> vb = q->bufs[b->index];
> ret = __verify_planes_array(vb, b);
> if (!ret)
> - vb2_core_querybuf(q, b->index, b);
> + vb2_core_querybuf(q, vb, b);
> return ret;
> }
> EXPORT_SYMBOL(vb2_querybuf);
> @@ -723,6 +710,7 @@ EXPORT_SYMBOL_GPL(vb2_reqbufs);
> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> struct v4l2_buffer *b)
> {
> + struct vb2_buffer *vb;
> int ret;
>
> if (vb2_fileio_is_active(q)) {
> @@ -733,9 +721,15 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> if (b->flags & V4L2_BUF_FLAG_REQUEST_FD)
> return -EINVAL;
>
> - ret = vb2_queue_or_prepare_buf(q, mdev, b, true, NULL);
> + if (b->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[b->index];
>
> - return ret ? ret : vb2_core_prepare_buf(q, b->index, b);
> + ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, true, NULL);
> +
> + return ret ? ret : vb2_core_prepare_buf(q, vb, b);
> }
> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
>
> @@ -803,6 +797,7 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
> struct v4l2_buffer *b)
> {
> struct media_request *req = NULL;
> + struct vb2_buffer *vb;
> int ret;
>
> if (vb2_fileio_is_active(q)) {
> @@ -810,10 +805,16 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
> return -EBUSY;
> }
>
> - ret = vb2_queue_or_prepare_buf(q, mdev, b, false, &req);
> + if (b->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[b->index];
> +
> + ret = vb2_queue_or_prepare_buf(q, mdev, vb, b, false, &req);
> if (ret)
> return ret;
> - ret = vb2_core_qbuf(q, b->index, b, req);
> + ret = vb2_core_qbuf(q, vb, b, req);
> if (req)
> media_request_put(req);
> return ret;
> @@ -873,7 +874,15 @@ EXPORT_SYMBOL_GPL(vb2_streamoff);
>
> int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
> {
> - return vb2_core_expbuf(q, &eb->fd, eb->type, eb->index,
> + struct vb2_buffer *vb;
> +
> + if (eb->index >= q->num_buffers) {
> + dprintk(q, 1, "buffer index out of range\n");
> + return -EINVAL;
> + }
> + vb = q->bufs[eb->index];
> +
> + return vb2_core_expbuf(q, &eb->fd, eb->type, vb,
> eb->plane, eb->flags);
> }
> EXPORT_SYMBOL_GPL(vb2_expbuf);
> diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
> index 909df82fed33..b322ef179f05 100644
> --- a/drivers/media/dvb-core/dvb_vb2.c
> +++ b/drivers/media/dvb-core/dvb_vb2.c
> @@ -360,7 +360,7 @@ int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> return -EINVAL;
> }
> - vb2_core_querybuf(&ctx->vb_q, b->index, b);
> + vb2_core_querybuf(&ctx->vb_q, q->bufs[b->index], b);
> dprintk(3, "[%s] index=%d\n", ctx->name, b->index);
> return 0;
> }
> @@ -370,7 +370,7 @@ int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp)
> struct vb2_queue *q = &ctx->vb_q;
> int ret;
>
> - ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, exp->index,
> + ret = vb2_core_expbuf(&ctx->vb_q, &exp->fd, q->type, q->bufs[exp->index],
> 0, exp->flags);
> if (ret) {
> dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
> @@ -391,7 +391,7 @@ int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> return -EINVAL;
> }
> - ret = vb2_core_qbuf(&ctx->vb_q, b->index, b, NULL);
> + ret = vb2_core_qbuf(&ctx->vb_q, q->bufs[b->index], b, NULL);
> if (ret) {
> dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
> b->index, ret);
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index 4b6a9d2ea372..cd3ff1cd759d 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -747,7 +747,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
> /**
> * vb2_core_querybuf() - query video buffer information.
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
It seems to me that in the doc comments the convention is to put the
ampersand before the word "struct". There are several instances
of this.
With this either confirmed to be intentional or corrected to follow
other uses you can add my
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> * @pb: buffer struct passed from userspace.
> *
> * Videobuf2 core helper to implement VIDIOC_QUERYBUF() operation. It is called
> @@ -759,7 +759,7 @@ int vb2_wait_for_all_buffers(struct vb2_queue *q);
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -void vb2_core_querybuf(struct vb2_queue *q, unsigned int index, void *pb);
> +void vb2_core_querybuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>
> /**
> * vb2_core_reqbufs() - Initiate streaming.
> @@ -823,7 +823,7 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> * vb2_core_prepare_buf() - Pass ownership of a buffer from userspace
> * to the kernel.
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
> * @pb: buffer structure passed from userspace to
> * &v4l2_ioctl_ops->vidioc_prepare_buf handler in driver.
> *
> @@ -839,13 +839,13 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
> +int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>
> /**
> * vb2_core_qbuf() - Queue a buffer from userspace
> *
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> - * @index: id number of the buffer
> + * @vb: pointer to struct &vb2_buffer.
> * @pb: buffer structure passed from userspace to
> * v4l2_ioctl_ops->vidioc_qbuf handler in driver
> * @req: pointer to &struct media_request, may be NULL.
> @@ -867,7 +867,7 @@ int vb2_core_prepare_buf(struct vb2_queue *q, unsigned int index, void *pb);
> *
> * Return: returns zero on success; an error code otherwise.
> */
> -int vb2_core_qbuf(struct vb2_queue *q, unsigned int index, void *pb,
> +int vb2_core_qbuf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb,
> struct media_request *req);
>
> /**
> @@ -931,7 +931,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
> * @fd: pointer to the file descriptor associated with DMABUF
> * (set by driver).
> * @type: buffer type.
> - * @index: id number of the buffer.
> + * @vb: pointer to struct &vb2_buffer.
> * @plane: index of the plane to be exported, 0 for single plane queues
> * @flags: file flags for newly created file, as defined at
> * include/uapi/asm-generic/fcntl.h.
> @@ -945,7 +945,7 @@ int vb2_core_streamoff(struct vb2_queue *q, unsigned int type);
> * Return: returns zero on success; an error code otherwise.
> */
> int vb2_core_expbuf(struct vb2_queue *q, int *fd, unsigned int type,
> - unsigned int index, unsigned int plane, unsigned int flags);
> + struct vb2_buffer *vb, unsigned int plane, unsigned int flags);
>
> /**
> * vb2_core_queue_init() - initialize a videobuf2 queue
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 06/56] media: videobuf2: Remove duplicated index vs q->num_buffers check
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-08 16:46 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 16:46 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> vb2_get_buffer() already checks if the requested index is valid.
> Stop duplicating this kind of check everywhere.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/common/videobuf2/videobuf2-v4l2.c | 8 --------
> 1 file changed, 8 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index 2ffb097bf00a..c6ebc8d2c537 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -823,10 +823,6 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
> return -EBUSY;
> }
>
> - if (b->index >= q->num_buffers) {
> - dprintk(q, 1, "buffer index out of range\n");
> - return -EINVAL;
> - }
> vb = vb2_get_buffer(q, b->index);
> if (!vb) {
> dprintk(q, 1, "can't find the requested buffer %u\n", b->index);
> @@ -898,10 +894,6 @@ int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
> {
> struct vb2_buffer *vb;
>
> - if (eb->index >= q->num_buffers) {
> - dprintk(q, 1, "buffer index out of range\n");
> - return -EINVAL;
> - }
> vb = vb2_get_buffer(q, eb->index);
> if (!vb) {
> dprintk(q, 1, "can't find the requested buffer %u\n", eb->index);
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 06/56] media: videobuf2: Remove duplicated index vs q->num_buffers check
@ 2023-11-08 16:46 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 16:46 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> vb2_get_buffer() already checks if the requested index is valid.
> Stop duplicating this kind of check everywhere.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/common/videobuf2/videobuf2-v4l2.c | 8 --------
> 1 file changed, 8 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index 2ffb097bf00a..c6ebc8d2c537 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -823,10 +823,6 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
> return -EBUSY;
> }
>
> - if (b->index >= q->num_buffers) {
> - dprintk(q, 1, "buffer index out of range\n");
> - return -EINVAL;
> - }
> vb = vb2_get_buffer(q, b->index);
> if (!vb) {
> dprintk(q, 1, "can't find the requested buffer %u\n", b->index);
> @@ -898,10 +894,6 @@ int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
> {
> struct vb2_buffer *vb;
>
> - if (eb->index >= q->num_buffers) {
> - dprintk(q, 1, "buffer index out of range\n");
> - return -EINVAL;
> - }
> vb = vb2_get_buffer(q, eb->index);
> if (!vb) {
> dprintk(q, 1, "can't find the requested buffer %u\n", eb->index);
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 06/56] media: videobuf2: Remove duplicated index vs q->num_buffers check
@ 2023-11-08 16:46 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 16:46 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> vb2_get_buffer() already checks if the requested index is valid.
> Stop duplicating this kind of check everywhere.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/common/videobuf2/videobuf2-v4l2.c | 8 --------
> 1 file changed, 8 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index 2ffb097bf00a..c6ebc8d2c537 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -823,10 +823,6 @@ int vb2_qbuf(struct vb2_queue *q, struct media_device *mdev,
> return -EBUSY;
> }
>
> - if (b->index >= q->num_buffers) {
> - dprintk(q, 1, "buffer index out of range\n");
> - return -EINVAL;
> - }
> vb = vb2_get_buffer(q, b->index);
> if (!vb) {
> dprintk(q, 1, "can't find the requested buffer %u\n", b->index);
> @@ -898,10 +894,6 @@ int vb2_expbuf(struct vb2_queue *q, struct v4l2_exportbuffer *eb)
> {
> struct vb2_buffer *vb;
>
> - if (eb->index >= q->num_buffers) {
> - dprintk(q, 1, "buffer index out of range\n");
> - return -EINVAL;
> - }
> vb = vb2_get_buffer(q, eb->index);
> if (!vb) {
> dprintk(q, 1, "can't find the requested buffer %u\n", eb->index);
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 07/56] media: videobuf2: Add helper to get queue number of buffers
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-08 16:50 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 16:50 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> In the future a side effect of introducing DELETE_BUFS ioctl is
> the create of 'holes' (i.e. unused buffers) in bufs arrays.
> To know which entries of the bufs arrays are used a bitmap will
> be added in struct vb2_queue. That will also mean that the number
> of buffers will be computed given the number of bit set in this bitmap.
> To smoothly allow this evolution all drives must stop using
> directly num_buffers field from struct vb2_queue.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> include/media/videobuf2-core.h | 11 ++++++++++-
> 1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index cd3ff1cd759d..8f9d9e4af5b1 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -1139,6 +1139,15 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
> return q->fileio;
> }
>
> +/**
> + * vb2_get_num_buffers() - get the number of buffer in a queue
> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> + */
> +static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
> +{
> + return q->num_buffers;
> +}
> +
> /**
> * vb2_is_busy() - return busy status of the queue.
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> @@ -1147,7 +1156,7 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
> */
> static inline bool vb2_is_busy(struct vb2_queue *q)
> {
> - return (q->num_buffers > 0);
> + return vb2_get_num_buffers(q) > 0;
> }
>
> /**
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 07/56] media: videobuf2: Add helper to get queue number of buffers
@ 2023-11-08 16:50 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 16:50 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> In the future a side effect of introducing DELETE_BUFS ioctl is
> the create of 'holes' (i.e. unused buffers) in bufs arrays.
> To know which entries of the bufs arrays are used a bitmap will
> be added in struct vb2_queue. That will also mean that the number
> of buffers will be computed given the number of bit set in this bitmap.
> To smoothly allow this evolution all drives must stop using
> directly num_buffers field from struct vb2_queue.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> include/media/videobuf2-core.h | 11 ++++++++++-
> 1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index cd3ff1cd759d..8f9d9e4af5b1 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -1139,6 +1139,15 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
> return q->fileio;
> }
>
> +/**
> + * vb2_get_num_buffers() - get the number of buffer in a queue
> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> + */
> +static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
> +{
> + return q->num_buffers;
> +}
> +
> /**
> * vb2_is_busy() - return busy status of the queue.
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> @@ -1147,7 +1156,7 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
> */
> static inline bool vb2_is_busy(struct vb2_queue *q)
> {
> - return (q->num_buffers > 0);
> + return vb2_get_num_buffers(q) > 0;
> }
>
> /**
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 07/56] media: videobuf2: Add helper to get queue number of buffers
@ 2023-11-08 16:50 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 16:50 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> In the future a side effect of introducing DELETE_BUFS ioctl is
> the create of 'holes' (i.e. unused buffers) in bufs arrays.
> To know which entries of the bufs arrays are used a bitmap will
> be added in struct vb2_queue. That will also mean that the number
> of buffers will be computed given the number of bit set in this bitmap.
> To smoothly allow this evolution all drives must stop using
> directly num_buffers field from struct vb2_queue.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> include/media/videobuf2-core.h | 11 ++++++++++-
> 1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index cd3ff1cd759d..8f9d9e4af5b1 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -1139,6 +1139,15 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
> return q->fileio;
> }
>
> +/**
> + * vb2_get_num_buffers() - get the number of buffer in a queue
> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> + */
> +static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
> +{
> + return q->num_buffers;
> +}
> +
> /**
> * vb2_is_busy() - return busy status of the queue.
> * @q: pointer to &struct vb2_queue with videobuf2 queue.
> @@ -1147,7 +1156,7 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
> */
> static inline bool vb2_is_busy(struct vb2_queue *q)
> {
> - return (q->num_buffers > 0);
> + return vb2_get_num_buffers(q) > 0;
> }
>
> /**
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 09/56] media: amphion: Use vb2_get_buffer() instead of directly access to buffers array
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-08 16:55 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 16:55 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Zhou Peng
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
> This allows us to change the type of the bufs in the future.
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer so check the return value of all of them.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ming Qian <ming.qian@nxp.com>
> CC: Zhou Peng <eagle.zhou@nxp.com>
> ---
> drivers/media/platform/amphion/vpu_dbg.c | 22 ++++++++++++++++++----
> 1 file changed, 18 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/platform/amphion/vpu_dbg.c b/drivers/media/platform/amphion/vpu_dbg.c
> index 982c2c777484..a462d6fe4ea9 100644
> --- a/drivers/media/platform/amphion/vpu_dbg.c
> +++ b/drivers/media/platform/amphion/vpu_dbg.c
> @@ -140,11 +140,18 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
>
> vq = v4l2_m2m_get_src_vq(inst->fh.m2m_ctx);
> for (i = 0; i < vq->num_buffers; i++) {
> - struct vb2_buffer *vb = vq->bufs[i];
> - struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> + struct vb2_buffer *vb;
> + struct vb2_v4l2_buffer *vbuf;
> +
> + vb = vb2_get_buffer(vq, i);
> + if (!vb)
> + continue;
>
> if (vb->state == VB2_BUF_STATE_DEQUEUED)
> continue;
> +
> + vbuf = to_vb2_v4l2_buffer(vb);
> +
> num = scnprintf(str, sizeof(str),
> "output [%2d] state = %10s, %8s\n",
> i, vb2_stat_name[vb->state],
> @@ -155,11 +162,18 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
>
> vq = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
> for (i = 0; i < vq->num_buffers; i++) {
> - struct vb2_buffer *vb = vq->bufs[i];
> - struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> + struct vb2_buffer *vb;
> + struct vb2_v4l2_buffer *vbuf;
> +
> + vb = vb2_get_buffer(vq, i);
> + if (!vb)
> + continue;
>
> if (vb->state == VB2_BUF_STATE_DEQUEUED)
> continue;
> +
> + vbuf = to_vb2_v4l2_buffer(vb);
> +
> num = scnprintf(str, sizeof(str),
> "capture[%2d] state = %10s, %8s\n",
> i, vb2_stat_name[vb->state],
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 09/56] media: amphion: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-11-08 16:55 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 16:55 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Zhou Peng
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
> This allows us to change the type of the bufs in the future.
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer so check the return value of all of them.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ming Qian <ming.qian@nxp.com>
> CC: Zhou Peng <eagle.zhou@nxp.com>
> ---
> drivers/media/platform/amphion/vpu_dbg.c | 22 ++++++++++++++++++----
> 1 file changed, 18 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/platform/amphion/vpu_dbg.c b/drivers/media/platform/amphion/vpu_dbg.c
> index 982c2c777484..a462d6fe4ea9 100644
> --- a/drivers/media/platform/amphion/vpu_dbg.c
> +++ b/drivers/media/platform/amphion/vpu_dbg.c
> @@ -140,11 +140,18 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
>
> vq = v4l2_m2m_get_src_vq(inst->fh.m2m_ctx);
> for (i = 0; i < vq->num_buffers; i++) {
> - struct vb2_buffer *vb = vq->bufs[i];
> - struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> + struct vb2_buffer *vb;
> + struct vb2_v4l2_buffer *vbuf;
> +
> + vb = vb2_get_buffer(vq, i);
> + if (!vb)
> + continue;
>
> if (vb->state == VB2_BUF_STATE_DEQUEUED)
> continue;
> +
> + vbuf = to_vb2_v4l2_buffer(vb);
> +
> num = scnprintf(str, sizeof(str),
> "output [%2d] state = %10s, %8s\n",
> i, vb2_stat_name[vb->state],
> @@ -155,11 +162,18 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
>
> vq = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
> for (i = 0; i < vq->num_buffers; i++) {
> - struct vb2_buffer *vb = vq->bufs[i];
> - struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> + struct vb2_buffer *vb;
> + struct vb2_v4l2_buffer *vbuf;
> +
> + vb = vb2_get_buffer(vq, i);
> + if (!vb)
> + continue;
>
> if (vb->state == VB2_BUF_STATE_DEQUEUED)
> continue;
> +
> + vbuf = to_vb2_v4l2_buffer(vb);
> +
> num = scnprintf(str, sizeof(str),
> "capture[%2d] state = %10s, %8s\n",
> i, vb2_stat_name[vb->state],
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 09/56] media: amphion: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-11-08 16:55 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 16:55 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Zhou Peng
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
> This allows us to change the type of the bufs in the future.
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer so check the return value of all of them.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ming Qian <ming.qian@nxp.com>
> CC: Zhou Peng <eagle.zhou@nxp.com>
> ---
> drivers/media/platform/amphion/vpu_dbg.c | 22 ++++++++++++++++++----
> 1 file changed, 18 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/platform/amphion/vpu_dbg.c b/drivers/media/platform/amphion/vpu_dbg.c
> index 982c2c777484..a462d6fe4ea9 100644
> --- a/drivers/media/platform/amphion/vpu_dbg.c
> +++ b/drivers/media/platform/amphion/vpu_dbg.c
> @@ -140,11 +140,18 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
>
> vq = v4l2_m2m_get_src_vq(inst->fh.m2m_ctx);
> for (i = 0; i < vq->num_buffers; i++) {
> - struct vb2_buffer *vb = vq->bufs[i];
> - struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> + struct vb2_buffer *vb;
> + struct vb2_v4l2_buffer *vbuf;
> +
> + vb = vb2_get_buffer(vq, i);
> + if (!vb)
> + continue;
>
> if (vb->state == VB2_BUF_STATE_DEQUEUED)
> continue;
> +
> + vbuf = to_vb2_v4l2_buffer(vb);
> +
> num = scnprintf(str, sizeof(str),
> "output [%2d] state = %10s, %8s\n",
> i, vb2_stat_name[vb->state],
> @@ -155,11 +162,18 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
>
> vq = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
> for (i = 0; i < vq->num_buffers; i++) {
> - struct vb2_buffer *vb = vq->bufs[i];
> - struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
> + struct vb2_buffer *vb;
> + struct vb2_v4l2_buffer *vbuf;
> +
> + vb = vb2_get_buffer(vq, i);
> + if (!vb)
> + continue;
>
> if (vb->state == VB2_BUF_STATE_DEQUEUED)
> continue;
> +
> + vbuf = to_vb2_v4l2_buffer(vb);
> +
> num = scnprintf(str, sizeof(str),
> "capture[%2d] state = %10s, %8s\n",
> i, vb2_stat_name[vb->state],
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 10/56] media: amphion: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-08 16:56 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 16:56 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Zhou Peng
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ming Qian <ming.qian@nxp.com>
> CC: Zhou Peng <eagle.zhou@nxp.com>
> ---
> drivers/media/platform/amphion/vpu_dbg.c | 8 ++++----
> drivers/media/platform/amphion/vpu_v4l2.c | 4 ++--
> 2 files changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/media/platform/amphion/vpu_dbg.c b/drivers/media/platform/amphion/vpu_dbg.c
> index a462d6fe4ea9..940e5bda5fa3 100644
> --- a/drivers/media/platform/amphion/vpu_dbg.c
> +++ b/drivers/media/platform/amphion/vpu_dbg.c
> @@ -87,7 +87,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
> num = scnprintf(str, sizeof(str),
> "output (%2d, %2d): fmt = %c%c%c%c %d x %d, %d;",
> vb2_is_streaming(vq),
> - vq->num_buffers,
> + vb2_get_num_buffers(vq),
> inst->out_format.pixfmt,
> inst->out_format.pixfmt >> 8,
> inst->out_format.pixfmt >> 16,
> @@ -111,7 +111,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
> num = scnprintf(str, sizeof(str),
> "capture(%2d, %2d): fmt = %c%c%c%c %d x %d, %d;",
> vb2_is_streaming(vq),
> - vq->num_buffers,
> + vb2_get_num_buffers(vq),
> inst->cap_format.pixfmt,
> inst->cap_format.pixfmt >> 8,
> inst->cap_format.pixfmt >> 16,
> @@ -139,7 +139,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
> return 0;
>
> vq = v4l2_m2m_get_src_vq(inst->fh.m2m_ctx);
> - for (i = 0; i < vq->num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> struct vb2_buffer *vb;
> struct vb2_v4l2_buffer *vbuf;
>
> @@ -161,7 +161,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
> }
>
> vq = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
> - for (i = 0; i < vq->num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> struct vb2_buffer *vb;
> struct vb2_v4l2_buffer *vbuf;
>
> diff --git a/drivers/media/platform/amphion/vpu_v4l2.c b/drivers/media/platform/amphion/vpu_v4l2.c
> index 0f6e4c666440..87afb4a18d5d 100644
> --- a/drivers/media/platform/amphion/vpu_v4l2.c
> +++ b/drivers/media/platform/amphion/vpu_v4l2.c
> @@ -439,7 +439,7 @@ int vpu_get_num_buffers(struct vpu_inst *inst, u32 type)
> else
> q = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
>
> - return q->num_buffers;
> + return vb2_get_num_buffers(q);
> }
>
> static void vpu_m2m_device_run(void *priv)
> @@ -587,7 +587,7 @@ static int vpu_vb2_start_streaming(struct vb2_queue *q, unsigned int count)
> fmt->sizeimage[0], fmt->bytesperline[0],
> fmt->sizeimage[1], fmt->bytesperline[1],
> fmt->sizeimage[2], fmt->bytesperline[2],
> - q->num_buffers);
> + vb2_get_num_buffers(q));
> vb2_clear_last_buffer_dequeued(q);
> ret = call_vop(inst, start, q->type);
> if (ret)
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 10/56] media: amphion: Stop direct calls to queue num_buffers field
@ 2023-11-08 16:56 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 16:56 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Zhou Peng
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ming Qian <ming.qian@nxp.com>
> CC: Zhou Peng <eagle.zhou@nxp.com>
> ---
> drivers/media/platform/amphion/vpu_dbg.c | 8 ++++----
> drivers/media/platform/amphion/vpu_v4l2.c | 4 ++--
> 2 files changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/media/platform/amphion/vpu_dbg.c b/drivers/media/platform/amphion/vpu_dbg.c
> index a462d6fe4ea9..940e5bda5fa3 100644
> --- a/drivers/media/platform/amphion/vpu_dbg.c
> +++ b/drivers/media/platform/amphion/vpu_dbg.c
> @@ -87,7 +87,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
> num = scnprintf(str, sizeof(str),
> "output (%2d, %2d): fmt = %c%c%c%c %d x %d, %d;",
> vb2_is_streaming(vq),
> - vq->num_buffers,
> + vb2_get_num_buffers(vq),
> inst->out_format.pixfmt,
> inst->out_format.pixfmt >> 8,
> inst->out_format.pixfmt >> 16,
> @@ -111,7 +111,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
> num = scnprintf(str, sizeof(str),
> "capture(%2d, %2d): fmt = %c%c%c%c %d x %d, %d;",
> vb2_is_streaming(vq),
> - vq->num_buffers,
> + vb2_get_num_buffers(vq),
> inst->cap_format.pixfmt,
> inst->cap_format.pixfmt >> 8,
> inst->cap_format.pixfmt >> 16,
> @@ -139,7 +139,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
> return 0;
>
> vq = v4l2_m2m_get_src_vq(inst->fh.m2m_ctx);
> - for (i = 0; i < vq->num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> struct vb2_buffer *vb;
> struct vb2_v4l2_buffer *vbuf;
>
> @@ -161,7 +161,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
> }
>
> vq = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
> - for (i = 0; i < vq->num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> struct vb2_buffer *vb;
> struct vb2_v4l2_buffer *vbuf;
>
> diff --git a/drivers/media/platform/amphion/vpu_v4l2.c b/drivers/media/platform/amphion/vpu_v4l2.c
> index 0f6e4c666440..87afb4a18d5d 100644
> --- a/drivers/media/platform/amphion/vpu_v4l2.c
> +++ b/drivers/media/platform/amphion/vpu_v4l2.c
> @@ -439,7 +439,7 @@ int vpu_get_num_buffers(struct vpu_inst *inst, u32 type)
> else
> q = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
>
> - return q->num_buffers;
> + return vb2_get_num_buffers(q);
> }
>
> static void vpu_m2m_device_run(void *priv)
> @@ -587,7 +587,7 @@ static int vpu_vb2_start_streaming(struct vb2_queue *q, unsigned int count)
> fmt->sizeimage[0], fmt->bytesperline[0],
> fmt->sizeimage[1], fmt->bytesperline[1],
> fmt->sizeimage[2], fmt->bytesperline[2],
> - q->num_buffers);
> + vb2_get_num_buffers(q));
> vb2_clear_last_buffer_dequeued(q);
> ret = call_vop(inst, start, q->type);
> if (ret)
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 10/56] media: amphion: Stop direct calls to queue num_buffers field
@ 2023-11-08 16:56 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 16:56 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Zhou Peng
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ming Qian <ming.qian@nxp.com>
> CC: Zhou Peng <eagle.zhou@nxp.com>
> ---
> drivers/media/platform/amphion/vpu_dbg.c | 8 ++++----
> drivers/media/platform/amphion/vpu_v4l2.c | 4 ++--
> 2 files changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/media/platform/amphion/vpu_dbg.c b/drivers/media/platform/amphion/vpu_dbg.c
> index a462d6fe4ea9..940e5bda5fa3 100644
> --- a/drivers/media/platform/amphion/vpu_dbg.c
> +++ b/drivers/media/platform/amphion/vpu_dbg.c
> @@ -87,7 +87,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
> num = scnprintf(str, sizeof(str),
> "output (%2d, %2d): fmt = %c%c%c%c %d x %d, %d;",
> vb2_is_streaming(vq),
> - vq->num_buffers,
> + vb2_get_num_buffers(vq),
> inst->out_format.pixfmt,
> inst->out_format.pixfmt >> 8,
> inst->out_format.pixfmt >> 16,
> @@ -111,7 +111,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
> num = scnprintf(str, sizeof(str),
> "capture(%2d, %2d): fmt = %c%c%c%c %d x %d, %d;",
> vb2_is_streaming(vq),
> - vq->num_buffers,
> + vb2_get_num_buffers(vq),
> inst->cap_format.pixfmt,
> inst->cap_format.pixfmt >> 8,
> inst->cap_format.pixfmt >> 16,
> @@ -139,7 +139,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
> return 0;
>
> vq = v4l2_m2m_get_src_vq(inst->fh.m2m_ctx);
> - for (i = 0; i < vq->num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> struct vb2_buffer *vb;
> struct vb2_v4l2_buffer *vbuf;
>
> @@ -161,7 +161,7 @@ static int vpu_dbg_instance(struct seq_file *s, void *data)
> }
>
> vq = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
> - for (i = 0; i < vq->num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> struct vb2_buffer *vb;
> struct vb2_v4l2_buffer *vbuf;
>
> diff --git a/drivers/media/platform/amphion/vpu_v4l2.c b/drivers/media/platform/amphion/vpu_v4l2.c
> index 0f6e4c666440..87afb4a18d5d 100644
> --- a/drivers/media/platform/amphion/vpu_v4l2.c
> +++ b/drivers/media/platform/amphion/vpu_v4l2.c
> @@ -439,7 +439,7 @@ int vpu_get_num_buffers(struct vpu_inst *inst, u32 type)
> else
> q = v4l2_m2m_get_dst_vq(inst->fh.m2m_ctx);
>
> - return q->num_buffers;
> + return vb2_get_num_buffers(q);
> }
>
> static void vpu_m2m_device_run(void *priv)
> @@ -587,7 +587,7 @@ static int vpu_vb2_start_streaming(struct vb2_queue *q, unsigned int count)
> fmt->sizeimage[0], fmt->bytesperline[0],
> fmt->sizeimage[1], fmt->bytesperline[1],
> fmt->sizeimage[2], fmt->bytesperline[2],
> - q->num_buffers);
> + vb2_get_num_buffers(q));
> vb2_clear_last_buffer_dequeued(q);
> ret = call_vop(inst, start, q->type);
> if (ret)
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 11/56] media: mediatek: jpeg: Use vb2_get_buffer() instead of directly access to buffers array
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-08 17:00 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 17:00 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Bin Liu,
Matthias Brugger
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
> This allows us to change the type of the bufs in the future.
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer so check the return value of all of them.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Bin Liu <bin.liu@mediatek.com>
> CC: Matthias Brugger <matthias.bgg@gmail.com>
> ---
> drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 7 +++----
> 1 file changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
> index 7194f88edc0f..73a063b1569b 100644
> --- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
> +++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
> @@ -598,12 +598,11 @@ static int mtk_jpeg_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
> goto end;
>
> vq = v4l2_m2m_get_vq(fh->m2m_ctx, buf->type);
> - if (buf->index >= vq->num_buffers) {
> - dev_err(ctx->jpeg->dev, "buffer index out of range\n");
> + vb = vb2_get_buffer(vq, buf->index);
> + if (!vb) {
> + dev_err(ctx->jpeg->dev, "buffer not found\n");
> return -EINVAL;
> }
> -
> - vb = vq->bufs[buf->index];
> jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(vb);
> jpeg_src_buf->bs_size = buf->m.planes[0].bytesused;
>
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 11/56] media: mediatek: jpeg: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-11-08 17:00 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 17:00 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Bin Liu,
Matthias Brugger
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
> This allows us to change the type of the bufs in the future.
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer so check the return value of all of them.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Bin Liu <bin.liu@mediatek.com>
> CC: Matthias Brugger <matthias.bgg@gmail.com>
> ---
> drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 7 +++----
> 1 file changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
> index 7194f88edc0f..73a063b1569b 100644
> --- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
> +++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
> @@ -598,12 +598,11 @@ static int mtk_jpeg_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
> goto end;
>
> vq = v4l2_m2m_get_vq(fh->m2m_ctx, buf->type);
> - if (buf->index >= vq->num_buffers) {
> - dev_err(ctx->jpeg->dev, "buffer index out of range\n");
> + vb = vb2_get_buffer(vq, buf->index);
> + if (!vb) {
> + dev_err(ctx->jpeg->dev, "buffer not found\n");
> return -EINVAL;
> }
> -
> - vb = vq->bufs[buf->index];
> jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(vb);
> jpeg_src_buf->bs_size = buf->m.planes[0].bytesused;
>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 11/56] media: mediatek: jpeg: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-11-08 17:00 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-08 17:00 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Bin Liu,
Matthias Brugger
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
> This allows us to change the type of the bufs in the future.
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer so check the return value of all of them.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Bin Liu <bin.liu@mediatek.com>
> CC: Matthias Brugger <matthias.bgg@gmail.com>
> ---
> drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c | 7 +++----
> 1 file changed, 3 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
> index 7194f88edc0f..73a063b1569b 100644
> --- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
> +++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_core.c
> @@ -598,12 +598,11 @@ static int mtk_jpeg_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
> goto end;
>
> vq = v4l2_m2m_get_vq(fh->m2m_ctx, buf->type);
> - if (buf->index >= vq->num_buffers) {
> - dev_err(ctx->jpeg->dev, "buffer index out of range\n");
> + vb = vb2_get_buffer(vq, buf->index);
> + if (!vb) {
> + dev_err(ctx->jpeg->dev, "buffer not found\n");
> return -EINVAL;
> }
> -
> - vb = vq->bufs[buf->index];
> jpeg_src_buf = mtk_jpeg_vb2_to_srcbuf(vb);
> jpeg_src_buf->bs_size = buf->m.planes[0].bytesused;
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 05/56] media: videobuf2: Access vb2_queue bufs array through helper functions
2023-11-08 10:24 ` Benjamin Gaignard
(?)
@ 2023-11-09 4:27 ` Tomasz Figa
-1 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 4:27 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Wed, Nov 8, 2023 at 7:24 PM Benjamin Gaignard
<benjamin.gaignard@collabora.com> wrote:
>
>
> Le 08/11/2023 à 09:50, Tomasz Figa a écrit :
> > On Tue, Oct 31, 2023 at 05:30:13PM +0100, Benjamin Gaignard wrote:
> >> This patch adds 2 helpers functions to add and remove vb2 buffers
> >> from a queue. With these 2 and vb2_get_buffer(), bufs field of
> >> struct vb2_queue becomes like a private member of the structure.
> >>
> >> After each call to vb2_get_buffer() we need to be sure that we get
> >> a valid pointer in preparation for when buffers can be deleted.
> >>
> >> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> >> ---
> >> .../media/common/videobuf2/videobuf2-core.c | 151 +++++++++++++-----
> >> .../media/common/videobuf2/videobuf2-v4l2.c | 50 ++++--
> >> 2 files changed, 149 insertions(+), 52 deletions(-)
> >>
> >> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> >> index 968b7c0e7934..b406a30a9b35 100644
> >> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> >> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> >> @@ -408,6 +408,31 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
> >> vb->skip_cache_sync_on_finish = 1;
> >> }
> >>
> >> +/**
> >> + * vb2_queue_add_buffer() - add a buffer to a queue
> >> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> >> + * @vb: pointer to &struct vb2_buffer to be added to the queue.
> >> + * @index: index where add vb2_buffer in the queue
> >> + */
> >> +static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
> >> +{
> >> + WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
> > nit: Would it make sense to also ensure that vb->vb2_queue is NULL?
>
> Since vb->vb2_queue and q->bufs[index] are always set and clear in the same
> functions I don't think it is useful to test the both here.
>
Well, they are if the caller is not buggy. But I suppose the check is
to detect buggy callers?
For example, an m2m driver could accidentally call this on a buffer
that was already added to another queue.
Best regards,
Tomasz
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 05/56] media: videobuf2: Access vb2_queue bufs array through helper functions
@ 2023-11-09 4:27 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 4:27 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Wed, Nov 8, 2023 at 7:24 PM Benjamin Gaignard
<benjamin.gaignard@collabora.com> wrote:
>
>
> Le 08/11/2023 à 09:50, Tomasz Figa a écrit :
> > On Tue, Oct 31, 2023 at 05:30:13PM +0100, Benjamin Gaignard wrote:
> >> This patch adds 2 helpers functions to add and remove vb2 buffers
> >> from a queue. With these 2 and vb2_get_buffer(), bufs field of
> >> struct vb2_queue becomes like a private member of the structure.
> >>
> >> After each call to vb2_get_buffer() we need to be sure that we get
> >> a valid pointer in preparation for when buffers can be deleted.
> >>
> >> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> >> ---
> >> .../media/common/videobuf2/videobuf2-core.c | 151 +++++++++++++-----
> >> .../media/common/videobuf2/videobuf2-v4l2.c | 50 ++++--
> >> 2 files changed, 149 insertions(+), 52 deletions(-)
> >>
> >> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> >> index 968b7c0e7934..b406a30a9b35 100644
> >> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> >> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> >> @@ -408,6 +408,31 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
> >> vb->skip_cache_sync_on_finish = 1;
> >> }
> >>
> >> +/**
> >> + * vb2_queue_add_buffer() - add a buffer to a queue
> >> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> >> + * @vb: pointer to &struct vb2_buffer to be added to the queue.
> >> + * @index: index where add vb2_buffer in the queue
> >> + */
> >> +static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
> >> +{
> >> + WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
> > nit: Would it make sense to also ensure that vb->vb2_queue is NULL?
>
> Since vb->vb2_queue and q->bufs[index] are always set and clear in the same
> functions I don't think it is useful to test the both here.
>
Well, they are if the caller is not buggy. But I suppose the check is
to detect buggy callers?
For example, an m2m driver could accidentally call this on a buffer
that was already added to another queue.
Best regards,
Tomasz
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 05/56] media: videobuf2: Access vb2_queue bufs array through helper functions
@ 2023-11-09 4:27 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 4:27 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Wed, Nov 8, 2023 at 7:24 PM Benjamin Gaignard
<benjamin.gaignard@collabora.com> wrote:
>
>
> Le 08/11/2023 à 09:50, Tomasz Figa a écrit :
> > On Tue, Oct 31, 2023 at 05:30:13PM +0100, Benjamin Gaignard wrote:
> >> This patch adds 2 helpers functions to add and remove vb2 buffers
> >> from a queue. With these 2 and vb2_get_buffer(), bufs field of
> >> struct vb2_queue becomes like a private member of the structure.
> >>
> >> After each call to vb2_get_buffer() we need to be sure that we get
> >> a valid pointer in preparation for when buffers can be deleted.
> >>
> >> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> >> ---
> >> .../media/common/videobuf2/videobuf2-core.c | 151 +++++++++++++-----
> >> .../media/common/videobuf2/videobuf2-v4l2.c | 50 ++++--
> >> 2 files changed, 149 insertions(+), 52 deletions(-)
> >>
> >> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> >> index 968b7c0e7934..b406a30a9b35 100644
> >> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> >> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> >> @@ -408,6 +408,31 @@ static void init_buffer_cache_hints(struct vb2_queue *q, struct vb2_buffer *vb)
> >> vb->skip_cache_sync_on_finish = 1;
> >> }
> >>
> >> +/**
> >> + * vb2_queue_add_buffer() - add a buffer to a queue
> >> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> >> + * @vb: pointer to &struct vb2_buffer to be added to the queue.
> >> + * @index: index where add vb2_buffer in the queue
> >> + */
> >> +static void vb2_queue_add_buffer(struct vb2_queue *q, struct vb2_buffer *vb, unsigned int index)
> >> +{
> >> + WARN_ON(index >= VB2_MAX_FRAME || q->bufs[index]);
> > nit: Would it make sense to also ensure that vb->vb2_queue is NULL?
>
> Since vb->vb2_queue and q->bufs[index] are always set and clear in the same
> functions I don't think it is useful to test the both here.
>
Well, they are if the caller is not buggy. But I suppose the check is
to detect buggy callers?
For example, an m2m driver could accidentally call this on a buffer
that was already added to another queue.
Best regards,
Tomasz
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 08/56] media: videobuf2: Use vb2_get_num_buffers() helper
2023-11-08 13:22 ` Benjamin Gaignard
(?)
@ 2023-11-09 4:36 ` Tomasz Figa
-1 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 4:36 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Wed, Nov 8, 2023 at 10:22 PM Benjamin Gaignard
<benjamin.gaignard@collabora.com> wrote:
>
>
> Le 08/11/2023 à 10:42, Tomasz Figa a écrit :
> > On Tue, Oct 31, 2023 at 05:30:16PM +0100, Benjamin Gaignard wrote:
> >> Stop using queue num_buffers field directly, instead use
> >> vb2_get_num_buffers().
> >> This prepares for the future 'delete buffers' feature where there are
> >> holes in the buffer indices.
> >>
> >> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> >> ---
> >> .../media/common/videobuf2/videobuf2-core.c | 92 +++++++++++--------
> >> .../media/common/videobuf2/videobuf2-v4l2.c | 4 +-
> >> 2 files changed, 54 insertions(+), 42 deletions(-)
> >>
> >> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> >> index b406a30a9b35..c5c5ae4d213d 100644
> >> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> >> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> >> @@ -444,13 +444,14 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> >> unsigned int num_buffers, unsigned int num_planes,
> >> const unsigned plane_sizes[VB2_MAX_PLANES])
> >> {
> >> + unsigned int q_num_buffers = vb2_get_num_buffers(q);
> >> unsigned int buffer, plane;
> >> struct vb2_buffer *vb;
> >> int ret;
> >>
> >> /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
> >> num_buffers = min_t(unsigned int, num_buffers,
> >> - VB2_MAX_FRAME - q->num_buffers);
> >> + VB2_MAX_FRAME - q_num_buffers);
> > I guess it's safe in this specific situation, but was there any reason
> > behind not just calling vb2_get_num_buffers() directly here?
> >
> >>
> >> for (buffer = 0; buffer < num_buffers; ++buffer) {
> >> /* Allocate vb2 buffer structures */
> >> @@ -470,7 +471,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> >> vb->planes[plane].min_length = plane_sizes[plane];
> >> }
> >>
> >> - vb2_queue_add_buffer(q, vb, q->num_buffers + buffer);
> >> + vb2_queue_add_buffer(q, vb, q_num_buffers + buffer);
> > In this case it should also be fine, but actually now this is a loop and if
> > somone doesn't know what the other code in the loop does, one could be
> > concerned that the num buffers actually could have changed, but we still
> > use the cached one that we got at the beginning of the function.
> >
> > (Ideally I'd imagine vb2_queue_add_buffer() to append the buffer
> > at the end of the queue and increment the num_buffers internally, but it
> > doesn't have to happen now, as this series is already quite complex...)
>
> That will be the case later in the series when I replace num_buffers field
> by a bitmap. Until that I prefer to limit the changes in this loop.
>
> >
> >> call_void_bufop(q, init_buffer, vb);
> >>
> >> /* Allocate video buffer memory for the MMAP type */
> > [snip]
> >> @@ -2513,7 +2519,8 @@ void vb2_core_queue_release(struct vb2_queue *q)
> >> __vb2_cleanup_fileio(q);
> >> __vb2_queue_cancel(q);
> >> mutex_lock(&q->mmap_lock);
> >> - __vb2_queue_free(q, q->num_buffers);
> >> + __vb2_queue_free(q, vb2_get_num_buffers(q));
> >> + q->num_buffers = 0;
> > Unrelated change?
>
> No because I found a case where q->num_buffers wasn't correctly reset while testing.
>
Could you provide more details about that case? Shouldn't it be fixed instead?
It's a bit weird to me, because __vb2_queue_free() is supposed to
decrement q->num_buffers by the number of buffers freed and it's
called with vb2_get_num_buffers() just one line above.
> >
> >> mutex_unlock(&q->mmap_lock);
> >> }
> >> EXPORT_SYMBOL_GPL(vb2_core_queue_release);
> >> @@ -2542,7 +2549,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
> >> /*
> >> * Start file I/O emulator only if streaming API has not been used yet.
> >> */
> >> - if (q->num_buffers == 0 && !vb2_fileio_is_active(q)) {
> >> + if (vb2_get_num_buffers(q) == 0 && !vb2_fileio_is_active(q)) {
> >> if (!q->is_output && (q->io_modes & VB2_READ) &&
> >> (req_events & (EPOLLIN | EPOLLRDNORM))) {
> >> if (__vb2_init_fileio(q, 1))
> >> @@ -2580,7 +2587,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
> >> * For output streams you can call write() as long as there are fewer
> >> * buffers queued than there are buffers available.
> >> */
> >> - if (q->is_output && q->fileio && q->queued_count < q->num_buffers)
> >> + if (q->is_output && q->fileio && q->queued_count < vb2_get_num_buffers(q))
> >> return EPOLLOUT | EPOLLWRNORM;
> >>
> >> if (list_empty(&q->done_list)) {
> >> @@ -2629,8 +2636,8 @@ struct vb2_fileio_buf {
> >> * struct vb2_fileio_data - queue context used by file io emulator
> >> *
> >> * @cur_index: the index of the buffer currently being read from or
> >> - * written to. If equal to q->num_buffers then a new buffer
> >> - * must be dequeued.
> >> + * written to. If equal to number of already queued buffers
> >> + * then a new buffer must be dequeued.
> > Hmm, that's a significant meaning change compared to the original text. Is
> > it indended?
>
> Does "If equal to number of buffers in the vb2_queue then a new buffer must be dequeued."
> sound better for you ?
Yes, I think now it matches the original meaning. Thanks.
>
> >
> >> * @initial_index: in the read() case all buffers are queued up immediately
> >> * in __vb2_init_fileio() and __vb2_perform_fileio() just cycles
> >> * buffers. However, in the write() case no buffers are initially
> >> @@ -2640,7 +2647,7 @@ struct vb2_fileio_buf {
> >> * buffers. This means that initially __vb2_perform_fileio()
> >> * needs to know what buffer index to use when it is queuing up
> >> * the buffers for the first time. That initial index is stored
> >> - * in this field. Once it is equal to q->num_buffers all
> >> + * in this field. Once it is equal to num_buffers all
> > It's not clear what num_buffers means here. Would it make sense to instead
> > say "number of buffers in the vb2_queue"?
>
> Yes I will change that
>
> >
> >> * available buffers have been queued and __vb2_perform_fileio()
> >> * should start the normal dequeue/queue cycle.
> >> *
> >> @@ -2690,7 +2697,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> >> /*
> >> * Check if streaming api has not been already activated.
> >> */
> >> - if (q->streaming || q->num_buffers > 0)
> >> + if (q->streaming || vb2_get_num_buffers(q) > 0)
> >> return -EBUSY;
> >>
> >> /*
> >> @@ -2740,7 +2747,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> >> /*
> >> * Get kernel address of each buffer.
> >> */
> >> - for (i = 0; i < q->num_buffers; i++) {
> >> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
> >> /* vb can never be NULL when using fileio. */
> >> vb = vb2_get_buffer(q, i);
> >>
> >> @@ -2759,18 +2766,23 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> >> /*
> >> * Queue all buffers.
> >> */
> >> - for (i = 0; i < q->num_buffers; i++) {
> >> - ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
> >> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
> >> + struct vb2_buffer *vb2 = vb2_get_buffer(q, i);
> >> +
> >> + if (!vb2)
> >> + continue;
> >> +
> >> + ret = vb2_core_qbuf(q, vb2, NULL, NULL);
> >> if (ret)
> >> goto err_reqbufs;
> >> fileio->bufs[i].queued = 1;
> >> }
> > Doesn't this part belong to the previous patch that changes q->bufs[x] to
> > vb2_get_buffer()?
>
> Yes I will change that too.
>
> >
> >> /*
> >> * All buffers have been queued, so mark that by setting
> >> - * initial_index to q->num_buffers
> >> + * initial_index to num_buffers
> > What num_buffers?
>
> I will use your wording: "the number of buffers in the vb2_queue"
>
Thanks!
> >
> >> */
> >> - fileio->initial_index = q->num_buffers;
> >> - fileio->cur_index = q->num_buffers;
> >> + fileio->initial_index = vb2_get_num_buffers(q);
> >> + fileio->cur_index = fileio->initial_index;
> >> }
> >>
> >> /*
> >> @@ -2964,12 +2976,12 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
> >> * If we are queuing up buffers for the first time, then
> >> * increase initial_index by one.
> >> */
> >> - if (fileio->initial_index < q->num_buffers)
> >> + if (fileio->initial_index < vb2_get_num_buffers(q))
> >> fileio->initial_index++;
> >> /*
> >> * The next buffer to use is either a buffer that's going to be
> >> - * queued for the first time (initial_index < q->num_buffers)
> >> - * or it is equal to q->num_buffers, meaning that the next
> >> + * queued for the first time (initial_index < num_buffers)
> >> + * or it is equal to num_buffers, meaning that the next
> > What num_buffers?
>
> Same here
Thanks!
Best regards,
Tomasz
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 08/56] media: videobuf2: Use vb2_get_num_buffers() helper
@ 2023-11-09 4:36 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 4:36 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Wed, Nov 8, 2023 at 10:22 PM Benjamin Gaignard
<benjamin.gaignard@collabora.com> wrote:
>
>
> Le 08/11/2023 à 10:42, Tomasz Figa a écrit :
> > On Tue, Oct 31, 2023 at 05:30:16PM +0100, Benjamin Gaignard wrote:
> >> Stop using queue num_buffers field directly, instead use
> >> vb2_get_num_buffers().
> >> This prepares for the future 'delete buffers' feature where there are
> >> holes in the buffer indices.
> >>
> >> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> >> ---
> >> .../media/common/videobuf2/videobuf2-core.c | 92 +++++++++++--------
> >> .../media/common/videobuf2/videobuf2-v4l2.c | 4 +-
> >> 2 files changed, 54 insertions(+), 42 deletions(-)
> >>
> >> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> >> index b406a30a9b35..c5c5ae4d213d 100644
> >> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> >> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> >> @@ -444,13 +444,14 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> >> unsigned int num_buffers, unsigned int num_planes,
> >> const unsigned plane_sizes[VB2_MAX_PLANES])
> >> {
> >> + unsigned int q_num_buffers = vb2_get_num_buffers(q);
> >> unsigned int buffer, plane;
> >> struct vb2_buffer *vb;
> >> int ret;
> >>
> >> /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
> >> num_buffers = min_t(unsigned int, num_buffers,
> >> - VB2_MAX_FRAME - q->num_buffers);
> >> + VB2_MAX_FRAME - q_num_buffers);
> > I guess it's safe in this specific situation, but was there any reason
> > behind not just calling vb2_get_num_buffers() directly here?
> >
> >>
> >> for (buffer = 0; buffer < num_buffers; ++buffer) {
> >> /* Allocate vb2 buffer structures */
> >> @@ -470,7 +471,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> >> vb->planes[plane].min_length = plane_sizes[plane];
> >> }
> >>
> >> - vb2_queue_add_buffer(q, vb, q->num_buffers + buffer);
> >> + vb2_queue_add_buffer(q, vb, q_num_buffers + buffer);
> > In this case it should also be fine, but actually now this is a loop and if
> > somone doesn't know what the other code in the loop does, one could be
> > concerned that the num buffers actually could have changed, but we still
> > use the cached one that we got at the beginning of the function.
> >
> > (Ideally I'd imagine vb2_queue_add_buffer() to append the buffer
> > at the end of the queue and increment the num_buffers internally, but it
> > doesn't have to happen now, as this series is already quite complex...)
>
> That will be the case later in the series when I replace num_buffers field
> by a bitmap. Until that I prefer to limit the changes in this loop.
>
> >
> >> call_void_bufop(q, init_buffer, vb);
> >>
> >> /* Allocate video buffer memory for the MMAP type */
> > [snip]
> >> @@ -2513,7 +2519,8 @@ void vb2_core_queue_release(struct vb2_queue *q)
> >> __vb2_cleanup_fileio(q);
> >> __vb2_queue_cancel(q);
> >> mutex_lock(&q->mmap_lock);
> >> - __vb2_queue_free(q, q->num_buffers);
> >> + __vb2_queue_free(q, vb2_get_num_buffers(q));
> >> + q->num_buffers = 0;
> > Unrelated change?
>
> No because I found a case where q->num_buffers wasn't correctly reset while testing.
>
Could you provide more details about that case? Shouldn't it be fixed instead?
It's a bit weird to me, because __vb2_queue_free() is supposed to
decrement q->num_buffers by the number of buffers freed and it's
called with vb2_get_num_buffers() just one line above.
> >
> >> mutex_unlock(&q->mmap_lock);
> >> }
> >> EXPORT_SYMBOL_GPL(vb2_core_queue_release);
> >> @@ -2542,7 +2549,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
> >> /*
> >> * Start file I/O emulator only if streaming API has not been used yet.
> >> */
> >> - if (q->num_buffers == 0 && !vb2_fileio_is_active(q)) {
> >> + if (vb2_get_num_buffers(q) == 0 && !vb2_fileio_is_active(q)) {
> >> if (!q->is_output && (q->io_modes & VB2_READ) &&
> >> (req_events & (EPOLLIN | EPOLLRDNORM))) {
> >> if (__vb2_init_fileio(q, 1))
> >> @@ -2580,7 +2587,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
> >> * For output streams you can call write() as long as there are fewer
> >> * buffers queued than there are buffers available.
> >> */
> >> - if (q->is_output && q->fileio && q->queued_count < q->num_buffers)
> >> + if (q->is_output && q->fileio && q->queued_count < vb2_get_num_buffers(q))
> >> return EPOLLOUT | EPOLLWRNORM;
> >>
> >> if (list_empty(&q->done_list)) {
> >> @@ -2629,8 +2636,8 @@ struct vb2_fileio_buf {
> >> * struct vb2_fileio_data - queue context used by file io emulator
> >> *
> >> * @cur_index: the index of the buffer currently being read from or
> >> - * written to. If equal to q->num_buffers then a new buffer
> >> - * must be dequeued.
> >> + * written to. If equal to number of already queued buffers
> >> + * then a new buffer must be dequeued.
> > Hmm, that's a significant meaning change compared to the original text. Is
> > it indended?
>
> Does "If equal to number of buffers in the vb2_queue then a new buffer must be dequeued."
> sound better for you ?
Yes, I think now it matches the original meaning. Thanks.
>
> >
> >> * @initial_index: in the read() case all buffers are queued up immediately
> >> * in __vb2_init_fileio() and __vb2_perform_fileio() just cycles
> >> * buffers. However, in the write() case no buffers are initially
> >> @@ -2640,7 +2647,7 @@ struct vb2_fileio_buf {
> >> * buffers. This means that initially __vb2_perform_fileio()
> >> * needs to know what buffer index to use when it is queuing up
> >> * the buffers for the first time. That initial index is stored
> >> - * in this field. Once it is equal to q->num_buffers all
> >> + * in this field. Once it is equal to num_buffers all
> > It's not clear what num_buffers means here. Would it make sense to instead
> > say "number of buffers in the vb2_queue"?
>
> Yes I will change that
>
> >
> >> * available buffers have been queued and __vb2_perform_fileio()
> >> * should start the normal dequeue/queue cycle.
> >> *
> >> @@ -2690,7 +2697,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> >> /*
> >> * Check if streaming api has not been already activated.
> >> */
> >> - if (q->streaming || q->num_buffers > 0)
> >> + if (q->streaming || vb2_get_num_buffers(q) > 0)
> >> return -EBUSY;
> >>
> >> /*
> >> @@ -2740,7 +2747,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> >> /*
> >> * Get kernel address of each buffer.
> >> */
> >> - for (i = 0; i < q->num_buffers; i++) {
> >> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
> >> /* vb can never be NULL when using fileio. */
> >> vb = vb2_get_buffer(q, i);
> >>
> >> @@ -2759,18 +2766,23 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> >> /*
> >> * Queue all buffers.
> >> */
> >> - for (i = 0; i < q->num_buffers; i++) {
> >> - ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
> >> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
> >> + struct vb2_buffer *vb2 = vb2_get_buffer(q, i);
> >> +
> >> + if (!vb2)
> >> + continue;
> >> +
> >> + ret = vb2_core_qbuf(q, vb2, NULL, NULL);
> >> if (ret)
> >> goto err_reqbufs;
> >> fileio->bufs[i].queued = 1;
> >> }
> > Doesn't this part belong to the previous patch that changes q->bufs[x] to
> > vb2_get_buffer()?
>
> Yes I will change that too.
>
> >
> >> /*
> >> * All buffers have been queued, so mark that by setting
> >> - * initial_index to q->num_buffers
> >> + * initial_index to num_buffers
> > What num_buffers?
>
> I will use your wording: "the number of buffers in the vb2_queue"
>
Thanks!
> >
> >> */
> >> - fileio->initial_index = q->num_buffers;
> >> - fileio->cur_index = q->num_buffers;
> >> + fileio->initial_index = vb2_get_num_buffers(q);
> >> + fileio->cur_index = fileio->initial_index;
> >> }
> >>
> >> /*
> >> @@ -2964,12 +2976,12 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
> >> * If we are queuing up buffers for the first time, then
> >> * increase initial_index by one.
> >> */
> >> - if (fileio->initial_index < q->num_buffers)
> >> + if (fileio->initial_index < vb2_get_num_buffers(q))
> >> fileio->initial_index++;
> >> /*
> >> * The next buffer to use is either a buffer that's going to be
> >> - * queued for the first time (initial_index < q->num_buffers)
> >> - * or it is equal to q->num_buffers, meaning that the next
> >> + * queued for the first time (initial_index < num_buffers)
> >> + * or it is equal to num_buffers, meaning that the next
> > What num_buffers?
>
> Same here
Thanks!
Best regards,
Tomasz
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 08/56] media: videobuf2: Use vb2_get_num_buffers() helper
@ 2023-11-09 4:36 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 4:36 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Wed, Nov 8, 2023 at 10:22 PM Benjamin Gaignard
<benjamin.gaignard@collabora.com> wrote:
>
>
> Le 08/11/2023 à 10:42, Tomasz Figa a écrit :
> > On Tue, Oct 31, 2023 at 05:30:16PM +0100, Benjamin Gaignard wrote:
> >> Stop using queue num_buffers field directly, instead use
> >> vb2_get_num_buffers().
> >> This prepares for the future 'delete buffers' feature where there are
> >> holes in the buffer indices.
> >>
> >> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> >> ---
> >> .../media/common/videobuf2/videobuf2-core.c | 92 +++++++++++--------
> >> .../media/common/videobuf2/videobuf2-v4l2.c | 4 +-
> >> 2 files changed, 54 insertions(+), 42 deletions(-)
> >>
> >> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> >> index b406a30a9b35..c5c5ae4d213d 100644
> >> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> >> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> >> @@ -444,13 +444,14 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> >> unsigned int num_buffers, unsigned int num_planes,
> >> const unsigned plane_sizes[VB2_MAX_PLANES])
> >> {
> >> + unsigned int q_num_buffers = vb2_get_num_buffers(q);
> >> unsigned int buffer, plane;
> >> struct vb2_buffer *vb;
> >> int ret;
> >>
> >> /* Ensure that q->num_buffers+num_buffers is below VB2_MAX_FRAME */
> >> num_buffers = min_t(unsigned int, num_buffers,
> >> - VB2_MAX_FRAME - q->num_buffers);
> >> + VB2_MAX_FRAME - q_num_buffers);
> > I guess it's safe in this specific situation, but was there any reason
> > behind not just calling vb2_get_num_buffers() directly here?
> >
> >>
> >> for (buffer = 0; buffer < num_buffers; ++buffer) {
> >> /* Allocate vb2 buffer structures */
> >> @@ -470,7 +471,7 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> >> vb->planes[plane].min_length = plane_sizes[plane];
> >> }
> >>
> >> - vb2_queue_add_buffer(q, vb, q->num_buffers + buffer);
> >> + vb2_queue_add_buffer(q, vb, q_num_buffers + buffer);
> > In this case it should also be fine, but actually now this is a loop and if
> > somone doesn't know what the other code in the loop does, one could be
> > concerned that the num buffers actually could have changed, but we still
> > use the cached one that we got at the beginning of the function.
> >
> > (Ideally I'd imagine vb2_queue_add_buffer() to append the buffer
> > at the end of the queue and increment the num_buffers internally, but it
> > doesn't have to happen now, as this series is already quite complex...)
>
> That will be the case later in the series when I replace num_buffers field
> by a bitmap. Until that I prefer to limit the changes in this loop.
>
> >
> >> call_void_bufop(q, init_buffer, vb);
> >>
> >> /* Allocate video buffer memory for the MMAP type */
> > [snip]
> >> @@ -2513,7 +2519,8 @@ void vb2_core_queue_release(struct vb2_queue *q)
> >> __vb2_cleanup_fileio(q);
> >> __vb2_queue_cancel(q);
> >> mutex_lock(&q->mmap_lock);
> >> - __vb2_queue_free(q, q->num_buffers);
> >> + __vb2_queue_free(q, vb2_get_num_buffers(q));
> >> + q->num_buffers = 0;
> > Unrelated change?
>
> No because I found a case where q->num_buffers wasn't correctly reset while testing.
>
Could you provide more details about that case? Shouldn't it be fixed instead?
It's a bit weird to me, because __vb2_queue_free() is supposed to
decrement q->num_buffers by the number of buffers freed and it's
called with vb2_get_num_buffers() just one line above.
> >
> >> mutex_unlock(&q->mmap_lock);
> >> }
> >> EXPORT_SYMBOL_GPL(vb2_core_queue_release);
> >> @@ -2542,7 +2549,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
> >> /*
> >> * Start file I/O emulator only if streaming API has not been used yet.
> >> */
> >> - if (q->num_buffers == 0 && !vb2_fileio_is_active(q)) {
> >> + if (vb2_get_num_buffers(q) == 0 && !vb2_fileio_is_active(q)) {
> >> if (!q->is_output && (q->io_modes & VB2_READ) &&
> >> (req_events & (EPOLLIN | EPOLLRDNORM))) {
> >> if (__vb2_init_fileio(q, 1))
> >> @@ -2580,7 +2587,7 @@ __poll_t vb2_core_poll(struct vb2_queue *q, struct file *file,
> >> * For output streams you can call write() as long as there are fewer
> >> * buffers queued than there are buffers available.
> >> */
> >> - if (q->is_output && q->fileio && q->queued_count < q->num_buffers)
> >> + if (q->is_output && q->fileio && q->queued_count < vb2_get_num_buffers(q))
> >> return EPOLLOUT | EPOLLWRNORM;
> >>
> >> if (list_empty(&q->done_list)) {
> >> @@ -2629,8 +2636,8 @@ struct vb2_fileio_buf {
> >> * struct vb2_fileio_data - queue context used by file io emulator
> >> *
> >> * @cur_index: the index of the buffer currently being read from or
> >> - * written to. If equal to q->num_buffers then a new buffer
> >> - * must be dequeued.
> >> + * written to. If equal to number of already queued buffers
> >> + * then a new buffer must be dequeued.
> > Hmm, that's a significant meaning change compared to the original text. Is
> > it indended?
>
> Does "If equal to number of buffers in the vb2_queue then a new buffer must be dequeued."
> sound better for you ?
Yes, I think now it matches the original meaning. Thanks.
>
> >
> >> * @initial_index: in the read() case all buffers are queued up immediately
> >> * in __vb2_init_fileio() and __vb2_perform_fileio() just cycles
> >> * buffers. However, in the write() case no buffers are initially
> >> @@ -2640,7 +2647,7 @@ struct vb2_fileio_buf {
> >> * buffers. This means that initially __vb2_perform_fileio()
> >> * needs to know what buffer index to use when it is queuing up
> >> * the buffers for the first time. That initial index is stored
> >> - * in this field. Once it is equal to q->num_buffers all
> >> + * in this field. Once it is equal to num_buffers all
> > It's not clear what num_buffers means here. Would it make sense to instead
> > say "number of buffers in the vb2_queue"?
>
> Yes I will change that
>
> >
> >> * available buffers have been queued and __vb2_perform_fileio()
> >> * should start the normal dequeue/queue cycle.
> >> *
> >> @@ -2690,7 +2697,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> >> /*
> >> * Check if streaming api has not been already activated.
> >> */
> >> - if (q->streaming || q->num_buffers > 0)
> >> + if (q->streaming || vb2_get_num_buffers(q) > 0)
> >> return -EBUSY;
> >>
> >> /*
> >> @@ -2740,7 +2747,7 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> >> /*
> >> * Get kernel address of each buffer.
> >> */
> >> - for (i = 0; i < q->num_buffers; i++) {
> >> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
> >> /* vb can never be NULL when using fileio. */
> >> vb = vb2_get_buffer(q, i);
> >>
> >> @@ -2759,18 +2766,23 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read)
> >> /*
> >> * Queue all buffers.
> >> */
> >> - for (i = 0; i < q->num_buffers; i++) {
> >> - ret = vb2_core_qbuf(q, q->bufs[i], NULL, NULL);
> >> + for (i = 0; i < vb2_get_num_buffers(q); i++) {
> >> + struct vb2_buffer *vb2 = vb2_get_buffer(q, i);
> >> +
> >> + if (!vb2)
> >> + continue;
> >> +
> >> + ret = vb2_core_qbuf(q, vb2, NULL, NULL);
> >> if (ret)
> >> goto err_reqbufs;
> >> fileio->bufs[i].queued = 1;
> >> }
> > Doesn't this part belong to the previous patch that changes q->bufs[x] to
> > vb2_get_buffer()?
>
> Yes I will change that too.
>
> >
> >> /*
> >> * All buffers have been queued, so mark that by setting
> >> - * initial_index to q->num_buffers
> >> + * initial_index to num_buffers
> > What num_buffers?
>
> I will use your wording: "the number of buffers in the vb2_queue"
>
Thanks!
> >
> >> */
> >> - fileio->initial_index = q->num_buffers;
> >> - fileio->cur_index = q->num_buffers;
> >> + fileio->initial_index = vb2_get_num_buffers(q);
> >> + fileio->cur_index = fileio->initial_index;
> >> }
> >>
> >> /*
> >> @@ -2964,12 +2976,12 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_
> >> * If we are queuing up buffers for the first time, then
> >> * increase initial_index by one.
> >> */
> >> - if (fileio->initial_index < q->num_buffers)
> >> + if (fileio->initial_index < vb2_get_num_buffers(q))
> >> fileio->initial_index++;
> >> /*
> >> * The next buffer to use is either a buffer that's going to be
> >> - * queued for the first time (initial_index < q->num_buffers)
> >> - * or it is equal to q->num_buffers, meaning that the next
> >> + * queued for the first time (initial_index < num_buffers)
> >> + * or it is equal to num_buffers, meaning that the next
> > What num_buffers?
>
> Same here
Thanks!
Best regards,
Tomasz
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 52/56] media: core: Add bitmap manage bufs array entries
2023-11-08 15:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 7:28 ` Tomasz Figa
-1 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 7:28 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Thu, Nov 9, 2023 at 12:30 AM Benjamin Gaignard
<benjamin.gaignard@collabora.com> wrote:
>
>
> Le 08/11/2023 à 11:44, Tomasz Figa a écrit :
> > On Tue, Oct 31, 2023 at 05:31:00PM +0100, Benjamin Gaignard wrote:
[snip]
> >> @@ -1150,7 +1150,10 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
> >> */
> >> static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
> >> {
> >> - return q->num_buffers;
> >> + if (!q->bufs_bitmap)
> >> + return 0;
> >> +
> >> + return bitmap_weight(q->bufs_bitmap, q->max_num_buffers);
> > Hmm, could we just cache the number of buffers we have, so that we don't
> > have to go over the entire bitmap every time? (Basically just keep the
> > code that we had for handling q->num_buffers before this patch.)
>
> I would prefer no duplicate how the number of buffers in a queue is computed
> and bitmap offer helpers for that. Why not use it ?
>
bitmap_weight() can become costly when the number of buffers grows.
Since it's easy to track how many buffers we add and remove, we could
just cache that number and then any code could call
vb2_get_num_buffers() whenever it needs the buffer count without
caring how costly it is.
> >
> >> }
> >>
> >> /**
> >> @@ -1253,13 +1256,13 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
> >> static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
> >> unsigned int index)
> >> {
> >> - if (!q->bufs)
> >> + if (!q->bufs_bitmap)
> >> return NULL;
> >>
> >> if (index >= q->max_num_buffers)
> >> return NULL;
> >>
> >> - if (index < q->num_buffers)
> >> + if (test_bit(index, q->bufs_bitmap))
> > Aha, I see why we need the extra condition above now. Perhaps it should've
> > been added in this patch instead?
>
> For me it was more explicit do introduce it at the same time that
> max_num_buffers field.
Okay. I don't have a strong opinion, especially since it was just an
intermediate patch.
Best regards,
Tomasz
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 52/56] media: core: Add bitmap manage bufs array entries
@ 2023-11-09 7:28 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 7:28 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Thu, Nov 9, 2023 at 12:30 AM Benjamin Gaignard
<benjamin.gaignard@collabora.com> wrote:
>
>
> Le 08/11/2023 à 11:44, Tomasz Figa a écrit :
> > On Tue, Oct 31, 2023 at 05:31:00PM +0100, Benjamin Gaignard wrote:
[snip]
> >> @@ -1150,7 +1150,10 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
> >> */
> >> static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
> >> {
> >> - return q->num_buffers;
> >> + if (!q->bufs_bitmap)
> >> + return 0;
> >> +
> >> + return bitmap_weight(q->bufs_bitmap, q->max_num_buffers);
> > Hmm, could we just cache the number of buffers we have, so that we don't
> > have to go over the entire bitmap every time? (Basically just keep the
> > code that we had for handling q->num_buffers before this patch.)
>
> I would prefer no duplicate how the number of buffers in a queue is computed
> and bitmap offer helpers for that. Why not use it ?
>
bitmap_weight() can become costly when the number of buffers grows.
Since it's easy to track how many buffers we add and remove, we could
just cache that number and then any code could call
vb2_get_num_buffers() whenever it needs the buffer count without
caring how costly it is.
> >
> >> }
> >>
> >> /**
> >> @@ -1253,13 +1256,13 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
> >> static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
> >> unsigned int index)
> >> {
> >> - if (!q->bufs)
> >> + if (!q->bufs_bitmap)
> >> return NULL;
> >>
> >> if (index >= q->max_num_buffers)
> >> return NULL;
> >>
> >> - if (index < q->num_buffers)
> >> + if (test_bit(index, q->bufs_bitmap))
> > Aha, I see why we need the extra condition above now. Perhaps it should've
> > been added in this patch instead?
>
> For me it was more explicit do introduce it at the same time that
> max_num_buffers field.
Okay. I don't have a strong opinion, especially since it was just an
intermediate patch.
Best regards,
Tomasz
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 52/56] media: core: Add bitmap manage bufs array entries
@ 2023-11-09 7:28 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 7:28 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Thu, Nov 9, 2023 at 12:30 AM Benjamin Gaignard
<benjamin.gaignard@collabora.com> wrote:
>
>
> Le 08/11/2023 à 11:44, Tomasz Figa a écrit :
> > On Tue, Oct 31, 2023 at 05:31:00PM +0100, Benjamin Gaignard wrote:
[snip]
> >> @@ -1150,7 +1150,10 @@ static inline bool vb2_fileio_is_active(struct vb2_queue *q)
> >> */
> >> static inline unsigned int vb2_get_num_buffers(struct vb2_queue *q)
> >> {
> >> - return q->num_buffers;
> >> + if (!q->bufs_bitmap)
> >> + return 0;
> >> +
> >> + return bitmap_weight(q->bufs_bitmap, q->max_num_buffers);
> > Hmm, could we just cache the number of buffers we have, so that we don't
> > have to go over the entire bitmap every time? (Basically just keep the
> > code that we had for handling q->num_buffers before this patch.)
>
> I would prefer no duplicate how the number of buffers in a queue is computed
> and bitmap offer helpers for that. Why not use it ?
>
bitmap_weight() can become costly when the number of buffers grows.
Since it's easy to track how many buffers we add and remove, we could
just cache that number and then any code could call
vb2_get_num_buffers() whenever it needs the buffer count without
caring how costly it is.
> >
> >> }
> >>
> >> /**
> >> @@ -1253,13 +1256,13 @@ static inline void vb2_clear_last_buffer_dequeued(struct vb2_queue *q)
> >> static inline struct vb2_buffer *vb2_get_buffer(struct vb2_queue *q,
> >> unsigned int index)
> >> {
> >> - if (!q->bufs)
> >> + if (!q->bufs_bitmap)
> >> return NULL;
> >>
> >> if (index >= q->max_num_buffers)
> >> return NULL;
> >>
> >> - if (index < q->num_buffers)
> >> + if (test_bit(index, q->bufs_bitmap))
> > Aha, I see why we need the extra condition above now. Perhaps it should've
> > been added in this patch instead?
>
> For me it was more explicit do introduce it at the same time that
> max_num_buffers field.
Okay. I don't have a strong opinion, especially since it was just an
intermediate patch.
Best regards,
Tomasz
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 53/56] media: core: Free range of buffers
2023-10-31 16:31 ` Benjamin Gaignard
(?)
@ 2023-11-09 9:10 ` Tomasz Figa
-1 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 9:10 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:31:01PM +0100, Benjamin Gaignard wrote:
> Improve __vb2_queue_free() and __vb2_free_mem() to free
> range of buffers and not only the last few buffers.
> Intoduce starting index to be flexible on range and change the loops
> according to this parameters.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 59 +++++++++----------
> 1 file changed, 28 insertions(+), 31 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 6e88406fcae9..010a8bca0240 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -519,15 +519,13 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> /*
> * __vb2_free_mem() - release all video buffer memory for a given queue
This comment is kind of outdated. Maybe we should replace it with
release video buffer memory for a given range of buffers in a given
queue
?
> */
> -static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
> +static void __vb2_free_mem(struct vb2_queue *q, unsigned int start, unsigned int count)
> {
> - unsigned int buffer;
> + unsigned int i;
> struct vb2_buffer *vb;
> - unsigned int q_num_buffers = vb2_get_num_buffers(q);
>
> - for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
> - ++buffer) {
> - vb = vb2_get_buffer(q, buffer);
> + for (i = start; i < q->max_num_buffers && i < start + count; i++) {
We could make this (and all those numerous simialr iterations) more
efficient by using bitmap helpers (probably wrapped in some vb2 helpers),
e.g. for_each_set_bit_from() (vb2_for_each_buffer_from()?). It can be done
in a follow up patch separately from this series though.
> + vb = vb2_get_buffer(q, i);
> if (!vb)
> continue;
>
> @@ -542,35 +540,35 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
> }
>
> /*
> - * __vb2_queue_free() - free buffers at the end of the queue - video memory and
> + * __vb2_queue_free() - free count buffers from start index of the queue - video memory and
nit: How about using the @count and @start notation to refer the argument
names? (Can be done with a follow up patch outside of this series later.)
> * related information, if no buffers are left return the queue to an
> * uninitialized state. Might be called even if the queue has already been freed.
> */
> -static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
> +static void __vb2_queue_free(struct vb2_queue *q, unsigned int start, unsigned int count)
> {
> - unsigned int buffer;
> - unsigned int q_num_buffers = vb2_get_num_buffers(q);
> + unsigned int i;
>
> lockdep_assert_held(&q->mmap_lock);
>
> /* Call driver-provided cleanup function for each buffer, if provided */
> - for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
> - ++buffer) {
> - struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
> + for (i = start; i < q->max_num_buffers && i < start + count; i++) {
> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
>
> - if (vb && vb->planes[0].mem_priv)
> + if (!vb)
> + continue;
> + if (vb->planes[0].mem_priv)
nit: Not sure if we really had to change this, but I'm fine with either.
Best regards,
Tomasz
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 53/56] media: core: Free range of buffers
@ 2023-11-09 9:10 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 9:10 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:31:01PM +0100, Benjamin Gaignard wrote:
> Improve __vb2_queue_free() and __vb2_free_mem() to free
> range of buffers and not only the last few buffers.
> Intoduce starting index to be flexible on range and change the loops
> according to this parameters.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 59 +++++++++----------
> 1 file changed, 28 insertions(+), 31 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 6e88406fcae9..010a8bca0240 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -519,15 +519,13 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> /*
> * __vb2_free_mem() - release all video buffer memory for a given queue
This comment is kind of outdated. Maybe we should replace it with
release video buffer memory for a given range of buffers in a given
queue
?
> */
> -static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
> +static void __vb2_free_mem(struct vb2_queue *q, unsigned int start, unsigned int count)
> {
> - unsigned int buffer;
> + unsigned int i;
> struct vb2_buffer *vb;
> - unsigned int q_num_buffers = vb2_get_num_buffers(q);
>
> - for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
> - ++buffer) {
> - vb = vb2_get_buffer(q, buffer);
> + for (i = start; i < q->max_num_buffers && i < start + count; i++) {
We could make this (and all those numerous simialr iterations) more
efficient by using bitmap helpers (probably wrapped in some vb2 helpers),
e.g. for_each_set_bit_from() (vb2_for_each_buffer_from()?). It can be done
in a follow up patch separately from this series though.
> + vb = vb2_get_buffer(q, i);
> if (!vb)
> continue;
>
> @@ -542,35 +540,35 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
> }
>
> /*
> - * __vb2_queue_free() - free buffers at the end of the queue - video memory and
> + * __vb2_queue_free() - free count buffers from start index of the queue - video memory and
nit: How about using the @count and @start notation to refer the argument
names? (Can be done with a follow up patch outside of this series later.)
> * related information, if no buffers are left return the queue to an
> * uninitialized state. Might be called even if the queue has already been freed.
> */
> -static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
> +static void __vb2_queue_free(struct vb2_queue *q, unsigned int start, unsigned int count)
> {
> - unsigned int buffer;
> - unsigned int q_num_buffers = vb2_get_num_buffers(q);
> + unsigned int i;
>
> lockdep_assert_held(&q->mmap_lock);
>
> /* Call driver-provided cleanup function for each buffer, if provided */
> - for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
> - ++buffer) {
> - struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
> + for (i = start; i < q->max_num_buffers && i < start + count; i++) {
> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
>
> - if (vb && vb->planes[0].mem_priv)
> + if (!vb)
> + continue;
> + if (vb->planes[0].mem_priv)
nit: Not sure if we really had to change this, but I'm fine with either.
Best regards,
Tomasz
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 53/56] media: core: Free range of buffers
@ 2023-11-09 9:10 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 9:10 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:31:01PM +0100, Benjamin Gaignard wrote:
> Improve __vb2_queue_free() and __vb2_free_mem() to free
> range of buffers and not only the last few buffers.
> Intoduce starting index to be flexible on range and change the loops
> according to this parameters.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../media/common/videobuf2/videobuf2-core.c | 59 +++++++++----------
> 1 file changed, 28 insertions(+), 31 deletions(-)
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 6e88406fcae9..010a8bca0240 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -519,15 +519,13 @@ static int __vb2_queue_alloc(struct vb2_queue *q, enum vb2_memory memory,
> /*
> * __vb2_free_mem() - release all video buffer memory for a given queue
This comment is kind of outdated. Maybe we should replace it with
release video buffer memory for a given range of buffers in a given
queue
?
> */
> -static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
> +static void __vb2_free_mem(struct vb2_queue *q, unsigned int start, unsigned int count)
> {
> - unsigned int buffer;
> + unsigned int i;
> struct vb2_buffer *vb;
> - unsigned int q_num_buffers = vb2_get_num_buffers(q);
>
> - for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
> - ++buffer) {
> - vb = vb2_get_buffer(q, buffer);
> + for (i = start; i < q->max_num_buffers && i < start + count; i++) {
We could make this (and all those numerous simialr iterations) more
efficient by using bitmap helpers (probably wrapped in some vb2 helpers),
e.g. for_each_set_bit_from() (vb2_for_each_buffer_from()?). It can be done
in a follow up patch separately from this series though.
> + vb = vb2_get_buffer(q, i);
> if (!vb)
> continue;
>
> @@ -542,35 +540,35 @@ static void __vb2_free_mem(struct vb2_queue *q, unsigned int buffers)
> }
>
> /*
> - * __vb2_queue_free() - free buffers at the end of the queue - video memory and
> + * __vb2_queue_free() - free count buffers from start index of the queue - video memory and
nit: How about using the @count and @start notation to refer the argument
names? (Can be done with a follow up patch outside of this series later.)
> * related information, if no buffers are left return the queue to an
> * uninitialized state. Might be called even if the queue has already been freed.
> */
> -static void __vb2_queue_free(struct vb2_queue *q, unsigned int buffers)
> +static void __vb2_queue_free(struct vb2_queue *q, unsigned int start, unsigned int count)
> {
> - unsigned int buffer;
> - unsigned int q_num_buffers = vb2_get_num_buffers(q);
> + unsigned int i;
>
> lockdep_assert_held(&q->mmap_lock);
>
> /* Call driver-provided cleanup function for each buffer, if provided */
> - for (buffer = q_num_buffers - buffers; buffer < q_num_buffers;
> - ++buffer) {
> - struct vb2_buffer *vb = vb2_get_buffer(q, buffer);
> + for (i = start; i < q->max_num_buffers && i < start + count; i++) {
> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
>
> - if (vb && vb->planes[0].mem_priv)
> + if (!vb)
> + continue;
> + if (vb->planes[0].mem_priv)
nit: Not sure if we really had to change this, but I'm fine with either.
Best regards,
Tomasz
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 12/56] media: mediatek: vdec: Remove useless loop
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 9:15 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:15 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Bin Liu,
Matthias Brugger
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Simplify code by removing useless loop by using video buffer index.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Bin Liu <bin.liu@mediatek.com>
> CC: Matthias Brugger <matthias.bgg@gmail.com>
> ---
> .../mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c | 9 ++-------
> 1 file changed, 2 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
> index e393e3e668f8..69d37b93bd35 100644
> --- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
> +++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
> @@ -1695,13 +1695,8 @@ static int vdec_vp9_slice_setup_core_buffer(struct vdec_vp9_slice_instance *inst
> return -EINVAL;
>
> /* update internal buffer's width/height */
> - for (i = 0; i < vq->num_buffers; i++) {
> - if (vb == vq->bufs[i]) {
> - instance->dpb[i].width = w;
> - instance->dpb[i].height = h;
> - break;
> - }
> - }
> + instance->dpb[vb->index].width = w;
> + instance->dpb[vb->index].height = h;
>
> /*
> * get buffer's width/height from instance
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 12/56] media: mediatek: vdec: Remove useless loop
@ 2023-11-09 9:15 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:15 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Bin Liu,
Matthias Brugger
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Simplify code by removing useless loop by using video buffer index.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Bin Liu <bin.liu@mediatek.com>
> CC: Matthias Brugger <matthias.bgg@gmail.com>
> ---
> .../mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c | 9 ++-------
> 1 file changed, 2 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
> index e393e3e668f8..69d37b93bd35 100644
> --- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
> +++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
> @@ -1695,13 +1695,8 @@ static int vdec_vp9_slice_setup_core_buffer(struct vdec_vp9_slice_instance *inst
> return -EINVAL;
>
> /* update internal buffer's width/height */
> - for (i = 0; i < vq->num_buffers; i++) {
> - if (vb == vq->bufs[i]) {
> - instance->dpb[i].width = w;
> - instance->dpb[i].height = h;
> - break;
> - }
> - }
> + instance->dpb[vb->index].width = w;
> + instance->dpb[vb->index].height = h;
>
> /*
> * get buffer's width/height from instance
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 12/56] media: mediatek: vdec: Remove useless loop
@ 2023-11-09 9:15 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:15 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Bin Liu,
Matthias Brugger
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Simplify code by removing useless loop by using video buffer index.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Bin Liu <bin.liu@mediatek.com>
> CC: Matthias Brugger <matthias.bgg@gmail.com>
> ---
> .../mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c | 9 ++-------
> 1 file changed, 2 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
> index e393e3e668f8..69d37b93bd35 100644
> --- a/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
> +++ b/drivers/media/platform/mediatek/vcodec/decoder/vdec/vdec_vp9_req_lat_if.c
> @@ -1695,13 +1695,8 @@ static int vdec_vp9_slice_setup_core_buffer(struct vdec_vp9_slice_instance *inst
> return -EINVAL;
>
> /* update internal buffer's width/height */
> - for (i = 0; i < vq->num_buffers; i++) {
> - if (vb == vq->bufs[i]) {
> - instance->dpb[i].width = w;
> - instance->dpb[i].height = h;
> - break;
> - }
> - }
> + instance->dpb[vb->index].width = w;
> + instance->dpb[vb->index].height = h;
>
> /*
> * get buffer's width/height from instance
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 13/56] media: mediatek: vcodec: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 9:21 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:21 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Bin Liu,
Matthias Brugger
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <anrdzej.p@collabora.com>
> CC: Bin Liu <bin.liu@mediatek.com>
> CC: Matthias Brugger <matthias.bgg@gmail.com>
> ---
> drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> index eb381fa6e7d1..181884e798fd 100644
> --- a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> +++ b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> @@ -912,7 +912,7 @@ static int vb2ops_venc_start_streaming(struct vb2_queue *q, unsigned int count)
> return 0;
>
> err_start_stream:
> - for (i = 0; i < q->num_buffers; ++i) {
> + for (i = 0; i < vb2_get_num_buffers(q); ++i) {
> struct vb2_buffer *buf = vb2_get_buffer(q, i);
>
> /*
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 13/56] media: mediatek: vcodec: Stop direct calls to queue num_buffers field
@ 2023-11-09 9:21 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:21 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Bin Liu,
Matthias Brugger
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <anrdzej.p@collabora.com>
> CC: Bin Liu <bin.liu@mediatek.com>
> CC: Matthias Brugger <matthias.bgg@gmail.com>
> ---
> drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> index eb381fa6e7d1..181884e798fd 100644
> --- a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> +++ b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> @@ -912,7 +912,7 @@ static int vb2ops_venc_start_streaming(struct vb2_queue *q, unsigned int count)
> return 0;
>
> err_start_stream:
> - for (i = 0; i < q->num_buffers; ++i) {
> + for (i = 0; i < vb2_get_num_buffers(q); ++i) {
> struct vb2_buffer *buf = vb2_get_buffer(q, i);
>
> /*
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 13/56] media: mediatek: vcodec: Stop direct calls to queue num_buffers field
@ 2023-11-09 9:21 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:21 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Bin Liu,
Matthias Brugger
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <anrdzej.p@collabora.com>
> CC: Bin Liu <bin.liu@mediatek.com>
> CC: Matthias Brugger <matthias.bgg@gmail.com>
> ---
> drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> index eb381fa6e7d1..181884e798fd 100644
> --- a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> +++ b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> @@ -912,7 +912,7 @@ static int vb2ops_venc_start_streaming(struct vb2_queue *q, unsigned int count)
> return 0;
>
> err_start_stream:
> - for (i = 0; i < q->num_buffers; ++i) {
> + for (i = 0; i < vb2_get_num_buffers(q); ++i) {
> struct vb2_buffer *buf = vb2_get_buffer(q, i);
>
> /*
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 13/56] media: mediatek: vcodec: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 9:23 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:23 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Bin Liu,
Matthias Brugger
Sorry for the noise, I made a typo in my email address. Resending with a proper one.
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Bin Liu <bin.liu@mediatek.com>
> CC: Matthias Brugger <matthias.bgg@gmail.com>
> ---
> drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> index eb381fa6e7d1..181884e798fd 100644
> --- a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> +++ b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> @@ -912,7 +912,7 @@ static int vb2ops_venc_start_streaming(struct vb2_queue *q, unsigned int count)
> return 0;
>
> err_start_stream:
> - for (i = 0; i < q->num_buffers; ++i) {
> + for (i = 0; i < vb2_get_num_buffers(q); ++i) {
> struct vb2_buffer *buf = vb2_get_buffer(q, i);
>
> /*
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 13/56] media: mediatek: vcodec: Stop direct calls to queue num_buffers field
@ 2023-11-09 9:23 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:23 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Bin Liu,
Matthias Brugger
Sorry for the noise, I made a typo in my email address. Resending with a proper one.
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Bin Liu <bin.liu@mediatek.com>
> CC: Matthias Brugger <matthias.bgg@gmail.com>
> ---
> drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> index eb381fa6e7d1..181884e798fd 100644
> --- a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> +++ b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> @@ -912,7 +912,7 @@ static int vb2ops_venc_start_streaming(struct vb2_queue *q, unsigned int count)
> return 0;
>
> err_start_stream:
> - for (i = 0; i < q->num_buffers; ++i) {
> + for (i = 0; i < vb2_get_num_buffers(q); ++i) {
> struct vb2_buffer *buf = vb2_get_buffer(q, i);
>
> /*
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 13/56] media: mediatek: vcodec: Stop direct calls to queue num_buffers field
@ 2023-11-09 9:23 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:23 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Bin Liu,
Matthias Brugger
Sorry for the noise, I made a typo in my email address. Resending with a proper one.
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Bin Liu <bin.liu@mediatek.com>
> CC: Matthias Brugger <matthias.bgg@gmail.com>
> ---
> drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> index eb381fa6e7d1..181884e798fd 100644
> --- a/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> +++ b/drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc.c
> @@ -912,7 +912,7 @@ static int vb2ops_venc_start_streaming(struct vb2_queue *q, unsigned int count)
> return 0;
>
> err_start_stream:
> - for (i = 0; i < q->num_buffers; ++i) {
> + for (i = 0; i < vb2_get_num_buffers(q); ++i) {
> struct vb2_buffer *buf = vb2_get_buffer(q, i);
>
> /*
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 14/56] media: sti: hva: Use vb2_get_buffer() instead of directly access to buffers array
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 9:29 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:29 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Jean-Christophe Trotin
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
> This allows us to change the type of the bufs in the future.
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer so check the return value of all of them.
> Remove index range test since it is done by vb2_get_buffer().
Actually, the patch uses vb2_get_buffer() instead of using vb2_get_buffer().
IOW vb2_get_buffer() continues to be used before and after this patch is applied.
I'd rather reformulate the commit message body to say that we remove
index check because it is already performed by vb2_get_buffer(), but
introduce a check for a NULL result.
Regards,
Andrzej
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> CC: Jean-Christophe Trotin <jean-christophe.trotin@foss.st.com>
> ---
> drivers/media/platform/st/sti/hva/hva-v4l2.c | 9 +++------
> 1 file changed, 3 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/media/platform/st/sti/hva/hva-v4l2.c b/drivers/media/platform/st/sti/hva/hva-v4l2.c
> index 3a848ca32a0e..cfe83e9dc01b 100644
> --- a/drivers/media/platform/st/sti/hva/hva-v4l2.c
> +++ b/drivers/media/platform/st/sti/hva/hva-v4l2.c
> @@ -569,14 +569,11 @@ static int hva_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
> struct vb2_buffer *vb2_buf;
>
> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, buf->type);
> -
> - if (buf->index >= vq->num_buffers) {
> - dev_dbg(dev, "%s buffer index %d out of range (%d)\n",
> - ctx->name, buf->index, vq->num_buffers);
> + vb2_buf = vb2_get_buffer(vq, buf->index);
> + if (!vb2_buf) {
> + dev_dbg(dev, "%s buffer index %d not found\n", ctx->name, buf->index);
> return -EINVAL;
> }
> -
> - vb2_buf = vb2_get_buffer(vq, buf->index);
> stream = to_hva_stream(to_vb2_v4l2_buffer(vb2_buf));
> stream->bytesused = buf->bytesused;
> }
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 14/56] media: sti: hva: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-11-09 9:29 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:29 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Jean-Christophe Trotin
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
> This allows us to change the type of the bufs in the future.
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer so check the return value of all of them.
> Remove index range test since it is done by vb2_get_buffer().
Actually, the patch uses vb2_get_buffer() instead of using vb2_get_buffer().
IOW vb2_get_buffer() continues to be used before and after this patch is applied.
I'd rather reformulate the commit message body to say that we remove
index check because it is already performed by vb2_get_buffer(), but
introduce a check for a NULL result.
Regards,
Andrzej
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> CC: Jean-Christophe Trotin <jean-christophe.trotin@foss.st.com>
> ---
> drivers/media/platform/st/sti/hva/hva-v4l2.c | 9 +++------
> 1 file changed, 3 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/media/platform/st/sti/hva/hva-v4l2.c b/drivers/media/platform/st/sti/hva/hva-v4l2.c
> index 3a848ca32a0e..cfe83e9dc01b 100644
> --- a/drivers/media/platform/st/sti/hva/hva-v4l2.c
> +++ b/drivers/media/platform/st/sti/hva/hva-v4l2.c
> @@ -569,14 +569,11 @@ static int hva_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
> struct vb2_buffer *vb2_buf;
>
> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, buf->type);
> -
> - if (buf->index >= vq->num_buffers) {
> - dev_dbg(dev, "%s buffer index %d out of range (%d)\n",
> - ctx->name, buf->index, vq->num_buffers);
> + vb2_buf = vb2_get_buffer(vq, buf->index);
> + if (!vb2_buf) {
> + dev_dbg(dev, "%s buffer index %d not found\n", ctx->name, buf->index);
> return -EINVAL;
> }
> -
> - vb2_buf = vb2_get_buffer(vq, buf->index);
> stream = to_hva_stream(to_vb2_v4l2_buffer(vb2_buf));
> stream->bytesused = buf->bytesused;
> }
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 14/56] media: sti: hva: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-11-09 9:29 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:29 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Jean-Christophe Trotin
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
> This allows us to change the type of the bufs in the future.
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer so check the return value of all of them.
> Remove index range test since it is done by vb2_get_buffer().
Actually, the patch uses vb2_get_buffer() instead of using vb2_get_buffer().
IOW vb2_get_buffer() continues to be used before and after this patch is applied.
I'd rather reformulate the commit message body to say that we remove
index check because it is already performed by vb2_get_buffer(), but
introduce a check for a NULL result.
Regards,
Andrzej
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> CC: Jean-Christophe Trotin <jean-christophe.trotin@foss.st.com>
> ---
> drivers/media/platform/st/sti/hva/hva-v4l2.c | 9 +++------
> 1 file changed, 3 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/media/platform/st/sti/hva/hva-v4l2.c b/drivers/media/platform/st/sti/hva/hva-v4l2.c
> index 3a848ca32a0e..cfe83e9dc01b 100644
> --- a/drivers/media/platform/st/sti/hva/hva-v4l2.c
> +++ b/drivers/media/platform/st/sti/hva/hva-v4l2.c
> @@ -569,14 +569,11 @@ static int hva_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
> struct vb2_buffer *vb2_buf;
>
> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, buf->type);
> -
> - if (buf->index >= vq->num_buffers) {
> - dev_dbg(dev, "%s buffer index %d out of range (%d)\n",
> - ctx->name, buf->index, vq->num_buffers);
> + vb2_buf = vb2_get_buffer(vq, buf->index);
> + if (!vb2_buf) {
> + dev_dbg(dev, "%s buffer index %d not found\n", ctx->name, buf->index);
> return -EINVAL;
> }
> -
> - vb2_buf = vb2_get_buffer(vq, buf->index);
> stream = to_hva_stream(to_vb2_v4l2_buffer(vb2_buf));
> stream->bytesused = buf->bytesused;
> }
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
2023-10-31 16:31 ` Benjamin Gaignard
(?)
@ 2023-11-09 9:30 ` Tomasz Figa
-1 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 9:30 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:31:02PM +0100, Benjamin Gaignard wrote:
> VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
> The number of buffers to delete in given by count field of
> struct v4l2_delete_buffers and the range start at the index
> specified in the same structure.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../userspace-api/media/v4l/user-func.rst | 1 +
> .../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
> .../media/v4l/vidioc-reqbufs.rst | 1 +
> .../media/common/videobuf2/videobuf2-core.c | 30 +++++++
> .../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
> drivers/media/v4l2-core/v4l2-dev.c | 1 +
> drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
> include/media/v4l2-ioctl.h | 4 +
> include/media/videobuf2-core.h | 12 +++
> include/media/videobuf2-v4l2.h | 13 +++
> include/uapi/linux/videodev2.h | 17 ++++
> 11 files changed, 196 insertions(+)
> create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>
> diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
> index 15ff0bf7bbe6..3fd567695477 100644
> --- a/Documentation/userspace-api/media/v4l/user-func.rst
> +++ b/Documentation/userspace-api/media/v4l/user-func.rst
> @@ -17,6 +17,7 @@ Function Reference
> vidioc-dbg-g-chip-info
> vidioc-dbg-g-register
> vidioc-decoder-cmd
> + vidioc-delete-bufs
> vidioc-dqevent
> vidioc-dv-timings-cap
> vidioc-encoder-cmd
> diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> new file mode 100644
> index 000000000000..4791df1395d6
> --- /dev/null
> +++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> @@ -0,0 +1,80 @@
> +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
> +.. c:namespace:: V4L
> +
> +.. _VIDIOC_DELETE_BUFS:
> +
> +************************
> +ioctl VIDIOC_DELETE_BUFS
> +************************
> +
> +Name
> +====
> +
> +VIDIOC_DELETE_BUFS - Deletes buffers from a queue
> +Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
> +capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
> +are invoked.
> +
> +Synopsis
> +========
> +
> +.. c:macro:: VIDIOC_DELETE_BUFs
> +
> +``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
> +
> +Arguments
> +=========
> +
> +``fd``
> + File descriptor returned by :c:func:`open()`.
> +
> +``argp``
> + Pointer to struct :c:type:`v4l2_delete_buffers`.
> +
> +Description
> +===========
> +
> +Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
> +delete buffers from a queue.
> +
> +.. c:type:: v4l2_delete_buffers
> +
> +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
> +
> +.. flat-table:: struct v4l2_delete_buffers
> + :header-rows: 0
> + :stub-columns: 0
> + :widths: 1 1 2
> +
> + * - __u32
> + - ``index``
> + - The starting buffer index to delete.
> + * - __u32
> + - ``count``
> + - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
> + All buffers in this range must be valid and in DEQUEUED state.
I wonder if this wouldn't be an inconvenience for the userspace. Would
there be anything wrong with allowing ranges with holes?
(Agreed about the DEQUEUED part of course.)
> + In error case errno is set to ``EINVAL`` error code and index returns the index of
> + the invalid buffer.
> + If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
Hmm, do we care about index if count is zero?
> + * - __u32
> + - ``type``
> + - Type of the stream or buffers, this is the same as the struct
> + :c:type:`v4l2_format` ``type`` field. See
> + :c:type:`v4l2_buf_type` for valid values.
> + * - __u32
> + - ``reserved``\ [13]
> + - A place holder for future extensions. Drivers and applications
> + must set the array to zero.
> +
> +Return Value
> +============
> +
> +On success 0 is returned, on error -1 and the ``errno`` variable is set
> +appropriately. The generic error codes are described at the
> +:ref:`Generic Error Codes <gen-errors>` chapter.
> +
> +EBUSY
> + File I/O is in progress.
> +
> +EINVAL
> + The buffer ``index`` doesn't exist in the queue.
> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> index 0b3a41a45d05..14d4a49c2945 100644
> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> @@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
> .. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
> +.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
>
> .. raw:: latex
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 010a8bca0240..7068930a0ba6 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> }
> EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
>
> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
> +{
> + unsigned int i, ret = 0;
> +
> + if (start == 0 && count == 0)
I guess related to the earlier comment, but why do we care about start
being zero?
> + return 0;
> +
> + mutex_lock(&q->mmap_lock);
> +
> + for (i = start; i < start + count && i < q->max_num_buffers; i++) {
> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
> +
> + if (!vb) {
> + ret = -EINVAL;
> + goto unlock;
> + }
> + if (vb->state != VB2_BUF_STATE_DEQUEUED) {
> + ret = -EINVAL;
> + goto unlock;
> + }
> + }
> + __vb2_queue_free(q, start, count);
> + dprintk(q, 2, "buffers deleted\n");
> +
> +unlock:
> + mutex_unlock(&q->mmap_lock);
> + return ret;
> +}
> +EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
> +
> /*
> * vb2_start_streaming() - Attempt to start streaming.
> * @q: videobuf2 queue
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index 56daf3b5b2ba..f003618efbc1 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
> if (q->supports_requests)
> *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
> #endif
> + if (q->supports_delete_bufs)
> + *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
> }
>
> static void validate_memory_flags(struct vb2_queue *q,
> @@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> }
> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
>
> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
> +{
> + return vb2_core_delete_bufs(q, d->index, d->count);
> +}
> +EXPORT_SYMBOL_GPL(vb2_delete_bufs);
> +
> int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
> {
> unsigned requested_planes = 1;
> @@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
>
> /* vb2 ioctl helpers */
>
> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> + struct v4l2_delete_buffers *p)
> +{
> + struct video_device *vdev = video_devdata(file);
> +
> + if (vb2_queue_is_busy(vdev->queue, file))
> + return -EBUSY;
> +
> + return vb2_delete_bufs(vdev->queue, p);
> +}
> +EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
> +
> int vb2_ioctl_reqbufs(struct file *file, void *priv,
> struct v4l2_requestbuffers *p)
> {
> diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
> index f81279492682..215654fd6581 100644
> --- a/drivers/media/v4l2-core/v4l2-dev.c
> +++ b/drivers/media/v4l2-core/v4l2-dev.c
> @@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
> SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
> SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
> SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
> + SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
> }
>
> if (is_vid || is_vbi || is_meta) {
> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
> index 4d90424cbfc4..e9dcf439f9f3 100644
> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> @@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
> v4l_print_format(&p->format, write_only);
> }
>
> +static void v4l_print_delete_buffers(const void *arg, bool write_only)
> +{
> + const struct v4l2_delete_buffers *p = arg;
> +
> + pr_cont("index=%u, count=%u\n", p->index, p->count);
> +}
> +
> static void v4l_print_streamparm(const void *arg, bool write_only)
> {
> const struct v4l2_streamparm *p = arg;
> @@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
> return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
> }
>
> +static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
> + struct file *file, void *fh, void *arg)
> +{
> + struct v4l2_delete_buffers *delete = arg;
> + int ret = check_fmt(file, delete->type);
Should we also have
memset_after(delete, 0, type);
here similar to how other ioctl handlers clear the reserved fields?
> +
> + return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
> +}
> +
> static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
> struct file *file, void *fh, void *arg)
> {
> @@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
> IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
> IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
> IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
> + IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
> };
> #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
>
> diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
> index edb733f21604..55afbde54211 100644
> --- a/include/media/v4l2-ioctl.h
> +++ b/include/media/v4l2-ioctl.h
> @@ -163,6 +163,8 @@ struct v4l2_fh;
> * :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
> * @vidioc_prepare_buf: pointer to the function that implements
> * :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
> + * @vidioc_delete_bufs: pointer to the function that implements
> + * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
> * @vidioc_overlay: pointer to the function that implements
> * :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
> * @vidioc_g_fbuf: pointer to the function that implements
> @@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
> struct v4l2_create_buffers *b);
> int (*vidioc_prepare_buf)(struct file *file, void *fh,
> struct v4l2_buffer *b);
> + int (*vidioc_delete_bufs)(struct file *file, void *fh,
> + struct v4l2_delete_buffers *d);
>
> int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
> int (*vidioc_g_fbuf)(struct file *file, void *fh,
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index 288477075a0e..db3bd986624e 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -507,6 +507,7 @@ struct vb2_buf_ops {
> * @supports_requests: this queue supports the Request API.
> * @requires_requests: this queue requires the Request API. If this is set to 1,
> * then supports_requests must be set to 1 as well.
> + * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
> * @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
> * time this is called. Set to 0 when the queue is canceled.
> * If this is 1, then you cannot queue buffers from a request.
> @@ -595,6 +596,7 @@ struct vb2_queue {
> unsigned int quirk_poll_must_check_waiting_for_buffers:1;
> unsigned int supports_requests:1;
> unsigned int requires_requests:1;
> + unsigned int supports_delete_bufs:1;
> unsigned int uses_qbuf:1;
> unsigned int uses_requests:1;
> unsigned int allow_cache_hints:1;
> @@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> */
> int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>
> +/**
> + * vb2_core_delete_bufs() -
> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> + * @start: first index of the range of buffers to delete.
> + * @count: number of buffers to delete.
> + *
> + * Return: returns zero on success; an error code otherwise.
> + */
> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
> +
> /**
> * vb2_core_qbuf() - Queue a buffer from userspace
> *
> diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
> index 5a845887850b..79cea8459f52 100644
> --- a/include/media/videobuf2-v4l2.h
> +++ b/include/media/videobuf2-v4l2.h
> @@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
> */
> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> struct v4l2_buffer *b);
> +/**
> + * vb2_delete_bufs() - Delete buffers from the queue
> + *
> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> + * @d: delete parameter, passed from userspace to
> + * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
> + *
> + * The return values from this function are intended to be directly returned
> + * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
> + */
> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
>
> /**
> * vb2_qbuf() - Queue a buffer from userspace
> @@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
> int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
> int vb2_ioctl_expbuf(struct file *file, void *priv,
> struct v4l2_exportbuffer *p);
> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> + struct v4l2_delete_buffers *p);
>
> /* struct v4l2_file_operations helpers */
>
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index 13ddb5abf584..96e105149906 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
> #define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
> +#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
>
> /**
> * struct v4l2_plane - plane info for multi-planar buffers
> @@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
> __u32 reserved[5];
> };
>
> +/**
> + * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
> + * @index: the first buffer to be deleted
> + * @count: number of buffers to delete
> + * @type: enum v4l2_buf_type
> + * @reserved: future extensions
> + */
> +struct v4l2_delete_buffers {
> + __u32 index;
> + __u32 count;
> + __u32 type;
> + __u32 reserved[13];
> +};
> +
> /*
> * I O C T L C O D E S F O R V I D E O D E V I C E S
> *
> @@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
> #define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
>
> #define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
> +#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
> +
>
> /* Reminder: when adding new ioctls please add support for them to
> drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
Do we also need to add support for the new ioctl in there?
Best regards,
Tomasz
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
@ 2023-11-09 9:30 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 9:30 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:31:02PM +0100, Benjamin Gaignard wrote:
> VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
> The number of buffers to delete in given by count field of
> struct v4l2_delete_buffers and the range start at the index
> specified in the same structure.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../userspace-api/media/v4l/user-func.rst | 1 +
> .../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
> .../media/v4l/vidioc-reqbufs.rst | 1 +
> .../media/common/videobuf2/videobuf2-core.c | 30 +++++++
> .../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
> drivers/media/v4l2-core/v4l2-dev.c | 1 +
> drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
> include/media/v4l2-ioctl.h | 4 +
> include/media/videobuf2-core.h | 12 +++
> include/media/videobuf2-v4l2.h | 13 +++
> include/uapi/linux/videodev2.h | 17 ++++
> 11 files changed, 196 insertions(+)
> create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>
> diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
> index 15ff0bf7bbe6..3fd567695477 100644
> --- a/Documentation/userspace-api/media/v4l/user-func.rst
> +++ b/Documentation/userspace-api/media/v4l/user-func.rst
> @@ -17,6 +17,7 @@ Function Reference
> vidioc-dbg-g-chip-info
> vidioc-dbg-g-register
> vidioc-decoder-cmd
> + vidioc-delete-bufs
> vidioc-dqevent
> vidioc-dv-timings-cap
> vidioc-encoder-cmd
> diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> new file mode 100644
> index 000000000000..4791df1395d6
> --- /dev/null
> +++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> @@ -0,0 +1,80 @@
> +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
> +.. c:namespace:: V4L
> +
> +.. _VIDIOC_DELETE_BUFS:
> +
> +************************
> +ioctl VIDIOC_DELETE_BUFS
> +************************
> +
> +Name
> +====
> +
> +VIDIOC_DELETE_BUFS - Deletes buffers from a queue
> +Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
> +capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
> +are invoked.
> +
> +Synopsis
> +========
> +
> +.. c:macro:: VIDIOC_DELETE_BUFs
> +
> +``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
> +
> +Arguments
> +=========
> +
> +``fd``
> + File descriptor returned by :c:func:`open()`.
> +
> +``argp``
> + Pointer to struct :c:type:`v4l2_delete_buffers`.
> +
> +Description
> +===========
> +
> +Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
> +delete buffers from a queue.
> +
> +.. c:type:: v4l2_delete_buffers
> +
> +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
> +
> +.. flat-table:: struct v4l2_delete_buffers
> + :header-rows: 0
> + :stub-columns: 0
> + :widths: 1 1 2
> +
> + * - __u32
> + - ``index``
> + - The starting buffer index to delete.
> + * - __u32
> + - ``count``
> + - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
> + All buffers in this range must be valid and in DEQUEUED state.
I wonder if this wouldn't be an inconvenience for the userspace. Would
there be anything wrong with allowing ranges with holes?
(Agreed about the DEQUEUED part of course.)
> + In error case errno is set to ``EINVAL`` error code and index returns the index of
> + the invalid buffer.
> + If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
Hmm, do we care about index if count is zero?
> + * - __u32
> + - ``type``
> + - Type of the stream or buffers, this is the same as the struct
> + :c:type:`v4l2_format` ``type`` field. See
> + :c:type:`v4l2_buf_type` for valid values.
> + * - __u32
> + - ``reserved``\ [13]
> + - A place holder for future extensions. Drivers and applications
> + must set the array to zero.
> +
> +Return Value
> +============
> +
> +On success 0 is returned, on error -1 and the ``errno`` variable is set
> +appropriately. The generic error codes are described at the
> +:ref:`Generic Error Codes <gen-errors>` chapter.
> +
> +EBUSY
> + File I/O is in progress.
> +
> +EINVAL
> + The buffer ``index`` doesn't exist in the queue.
> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> index 0b3a41a45d05..14d4a49c2945 100644
> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> @@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
> .. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
> +.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
>
> .. raw:: latex
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 010a8bca0240..7068930a0ba6 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> }
> EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
>
> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
> +{
> + unsigned int i, ret = 0;
> +
> + if (start == 0 && count == 0)
I guess related to the earlier comment, but why do we care about start
being zero?
> + return 0;
> +
> + mutex_lock(&q->mmap_lock);
> +
> + for (i = start; i < start + count && i < q->max_num_buffers; i++) {
> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
> +
> + if (!vb) {
> + ret = -EINVAL;
> + goto unlock;
> + }
> + if (vb->state != VB2_BUF_STATE_DEQUEUED) {
> + ret = -EINVAL;
> + goto unlock;
> + }
> + }
> + __vb2_queue_free(q, start, count);
> + dprintk(q, 2, "buffers deleted\n");
> +
> +unlock:
> + mutex_unlock(&q->mmap_lock);
> + return ret;
> +}
> +EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
> +
> /*
> * vb2_start_streaming() - Attempt to start streaming.
> * @q: videobuf2 queue
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index 56daf3b5b2ba..f003618efbc1 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
> if (q->supports_requests)
> *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
> #endif
> + if (q->supports_delete_bufs)
> + *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
> }
>
> static void validate_memory_flags(struct vb2_queue *q,
> @@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> }
> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
>
> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
> +{
> + return vb2_core_delete_bufs(q, d->index, d->count);
> +}
> +EXPORT_SYMBOL_GPL(vb2_delete_bufs);
> +
> int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
> {
> unsigned requested_planes = 1;
> @@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
>
> /* vb2 ioctl helpers */
>
> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> + struct v4l2_delete_buffers *p)
> +{
> + struct video_device *vdev = video_devdata(file);
> +
> + if (vb2_queue_is_busy(vdev->queue, file))
> + return -EBUSY;
> +
> + return vb2_delete_bufs(vdev->queue, p);
> +}
> +EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
> +
> int vb2_ioctl_reqbufs(struct file *file, void *priv,
> struct v4l2_requestbuffers *p)
> {
> diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
> index f81279492682..215654fd6581 100644
> --- a/drivers/media/v4l2-core/v4l2-dev.c
> +++ b/drivers/media/v4l2-core/v4l2-dev.c
> @@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
> SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
> SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
> SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
> + SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
> }
>
> if (is_vid || is_vbi || is_meta) {
> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
> index 4d90424cbfc4..e9dcf439f9f3 100644
> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> @@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
> v4l_print_format(&p->format, write_only);
> }
>
> +static void v4l_print_delete_buffers(const void *arg, bool write_only)
> +{
> + const struct v4l2_delete_buffers *p = arg;
> +
> + pr_cont("index=%u, count=%u\n", p->index, p->count);
> +}
> +
> static void v4l_print_streamparm(const void *arg, bool write_only)
> {
> const struct v4l2_streamparm *p = arg;
> @@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
> return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
> }
>
> +static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
> + struct file *file, void *fh, void *arg)
> +{
> + struct v4l2_delete_buffers *delete = arg;
> + int ret = check_fmt(file, delete->type);
Should we also have
memset_after(delete, 0, type);
here similar to how other ioctl handlers clear the reserved fields?
> +
> + return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
> +}
> +
> static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
> struct file *file, void *fh, void *arg)
> {
> @@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
> IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
> IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
> IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
> + IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
> };
> #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
>
> diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
> index edb733f21604..55afbde54211 100644
> --- a/include/media/v4l2-ioctl.h
> +++ b/include/media/v4l2-ioctl.h
> @@ -163,6 +163,8 @@ struct v4l2_fh;
> * :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
> * @vidioc_prepare_buf: pointer to the function that implements
> * :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
> + * @vidioc_delete_bufs: pointer to the function that implements
> + * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
> * @vidioc_overlay: pointer to the function that implements
> * :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
> * @vidioc_g_fbuf: pointer to the function that implements
> @@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
> struct v4l2_create_buffers *b);
> int (*vidioc_prepare_buf)(struct file *file, void *fh,
> struct v4l2_buffer *b);
> + int (*vidioc_delete_bufs)(struct file *file, void *fh,
> + struct v4l2_delete_buffers *d);
>
> int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
> int (*vidioc_g_fbuf)(struct file *file, void *fh,
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index 288477075a0e..db3bd986624e 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -507,6 +507,7 @@ struct vb2_buf_ops {
> * @supports_requests: this queue supports the Request API.
> * @requires_requests: this queue requires the Request API. If this is set to 1,
> * then supports_requests must be set to 1 as well.
> + * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
> * @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
> * time this is called. Set to 0 when the queue is canceled.
> * If this is 1, then you cannot queue buffers from a request.
> @@ -595,6 +596,7 @@ struct vb2_queue {
> unsigned int quirk_poll_must_check_waiting_for_buffers:1;
> unsigned int supports_requests:1;
> unsigned int requires_requests:1;
> + unsigned int supports_delete_bufs:1;
> unsigned int uses_qbuf:1;
> unsigned int uses_requests:1;
> unsigned int allow_cache_hints:1;
> @@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> */
> int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>
> +/**
> + * vb2_core_delete_bufs() -
> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> + * @start: first index of the range of buffers to delete.
> + * @count: number of buffers to delete.
> + *
> + * Return: returns zero on success; an error code otherwise.
> + */
> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
> +
> /**
> * vb2_core_qbuf() - Queue a buffer from userspace
> *
> diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
> index 5a845887850b..79cea8459f52 100644
> --- a/include/media/videobuf2-v4l2.h
> +++ b/include/media/videobuf2-v4l2.h
> @@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
> */
> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> struct v4l2_buffer *b);
> +/**
> + * vb2_delete_bufs() - Delete buffers from the queue
> + *
> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> + * @d: delete parameter, passed from userspace to
> + * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
> + *
> + * The return values from this function are intended to be directly returned
> + * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
> + */
> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
>
> /**
> * vb2_qbuf() - Queue a buffer from userspace
> @@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
> int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
> int vb2_ioctl_expbuf(struct file *file, void *priv,
> struct v4l2_exportbuffer *p);
> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> + struct v4l2_delete_buffers *p);
>
> /* struct v4l2_file_operations helpers */
>
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index 13ddb5abf584..96e105149906 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
> #define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
> +#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
>
> /**
> * struct v4l2_plane - plane info for multi-planar buffers
> @@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
> __u32 reserved[5];
> };
>
> +/**
> + * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
> + * @index: the first buffer to be deleted
> + * @count: number of buffers to delete
> + * @type: enum v4l2_buf_type
> + * @reserved: future extensions
> + */
> +struct v4l2_delete_buffers {
> + __u32 index;
> + __u32 count;
> + __u32 type;
> + __u32 reserved[13];
> +};
> +
> /*
> * I O C T L C O D E S F O R V I D E O D E V I C E S
> *
> @@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
> #define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
>
> #define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
> +#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
> +
>
> /* Reminder: when adding new ioctls please add support for them to
> drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
Do we also need to add support for the new ioctl in there?
Best regards,
Tomasz
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
@ 2023-11-09 9:30 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 9:30 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:31:02PM +0100, Benjamin Gaignard wrote:
> VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
> The number of buffers to delete in given by count field of
> struct v4l2_delete_buffers and the range start at the index
> specified in the same structure.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../userspace-api/media/v4l/user-func.rst | 1 +
> .../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
> .../media/v4l/vidioc-reqbufs.rst | 1 +
> .../media/common/videobuf2/videobuf2-core.c | 30 +++++++
> .../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
> drivers/media/v4l2-core/v4l2-dev.c | 1 +
> drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
> include/media/v4l2-ioctl.h | 4 +
> include/media/videobuf2-core.h | 12 +++
> include/media/videobuf2-v4l2.h | 13 +++
> include/uapi/linux/videodev2.h | 17 ++++
> 11 files changed, 196 insertions(+)
> create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>
> diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
> index 15ff0bf7bbe6..3fd567695477 100644
> --- a/Documentation/userspace-api/media/v4l/user-func.rst
> +++ b/Documentation/userspace-api/media/v4l/user-func.rst
> @@ -17,6 +17,7 @@ Function Reference
> vidioc-dbg-g-chip-info
> vidioc-dbg-g-register
> vidioc-decoder-cmd
> + vidioc-delete-bufs
> vidioc-dqevent
> vidioc-dv-timings-cap
> vidioc-encoder-cmd
> diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> new file mode 100644
> index 000000000000..4791df1395d6
> --- /dev/null
> +++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> @@ -0,0 +1,80 @@
> +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
> +.. c:namespace:: V4L
> +
> +.. _VIDIOC_DELETE_BUFS:
> +
> +************************
> +ioctl VIDIOC_DELETE_BUFS
> +************************
> +
> +Name
> +====
> +
> +VIDIOC_DELETE_BUFS - Deletes buffers from a queue
> +Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
> +capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
> +are invoked.
> +
> +Synopsis
> +========
> +
> +.. c:macro:: VIDIOC_DELETE_BUFs
> +
> +``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
> +
> +Arguments
> +=========
> +
> +``fd``
> + File descriptor returned by :c:func:`open()`.
> +
> +``argp``
> + Pointer to struct :c:type:`v4l2_delete_buffers`.
> +
> +Description
> +===========
> +
> +Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
> +delete buffers from a queue.
> +
> +.. c:type:: v4l2_delete_buffers
> +
> +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
> +
> +.. flat-table:: struct v4l2_delete_buffers
> + :header-rows: 0
> + :stub-columns: 0
> + :widths: 1 1 2
> +
> + * - __u32
> + - ``index``
> + - The starting buffer index to delete.
> + * - __u32
> + - ``count``
> + - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
> + All buffers in this range must be valid and in DEQUEUED state.
I wonder if this wouldn't be an inconvenience for the userspace. Would
there be anything wrong with allowing ranges with holes?
(Agreed about the DEQUEUED part of course.)
> + In error case errno is set to ``EINVAL`` error code and index returns the index of
> + the invalid buffer.
> + If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
Hmm, do we care about index if count is zero?
> + * - __u32
> + - ``type``
> + - Type of the stream or buffers, this is the same as the struct
> + :c:type:`v4l2_format` ``type`` field. See
> + :c:type:`v4l2_buf_type` for valid values.
> + * - __u32
> + - ``reserved``\ [13]
> + - A place holder for future extensions. Drivers and applications
> + must set the array to zero.
> +
> +Return Value
> +============
> +
> +On success 0 is returned, on error -1 and the ``errno`` variable is set
> +appropriately. The generic error codes are described at the
> +:ref:`Generic Error Codes <gen-errors>` chapter.
> +
> +EBUSY
> + File I/O is in progress.
> +
> +EINVAL
> + The buffer ``index`` doesn't exist in the queue.
> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> index 0b3a41a45d05..14d4a49c2945 100644
> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> @@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
> .. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
> +.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
>
> .. raw:: latex
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> index 010a8bca0240..7068930a0ba6 100644
> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> @@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> }
> EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
>
> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
> +{
> + unsigned int i, ret = 0;
> +
> + if (start == 0 && count == 0)
I guess related to the earlier comment, but why do we care about start
being zero?
> + return 0;
> +
> + mutex_lock(&q->mmap_lock);
> +
> + for (i = start; i < start + count && i < q->max_num_buffers; i++) {
> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
> +
> + if (!vb) {
> + ret = -EINVAL;
> + goto unlock;
> + }
> + if (vb->state != VB2_BUF_STATE_DEQUEUED) {
> + ret = -EINVAL;
> + goto unlock;
> + }
> + }
> + __vb2_queue_free(q, start, count);
> + dprintk(q, 2, "buffers deleted\n");
> +
> +unlock:
> + mutex_unlock(&q->mmap_lock);
> + return ret;
> +}
> +EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
> +
> /*
> * vb2_start_streaming() - Attempt to start streaming.
> * @q: videobuf2 queue
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index 56daf3b5b2ba..f003618efbc1 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
> if (q->supports_requests)
> *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
> #endif
> + if (q->supports_delete_bufs)
> + *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
> }
>
> static void validate_memory_flags(struct vb2_queue *q,
> @@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> }
> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
>
> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
> +{
> + return vb2_core_delete_bufs(q, d->index, d->count);
> +}
> +EXPORT_SYMBOL_GPL(vb2_delete_bufs);
> +
> int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
> {
> unsigned requested_planes = 1;
> @@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
>
> /* vb2 ioctl helpers */
>
> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> + struct v4l2_delete_buffers *p)
> +{
> + struct video_device *vdev = video_devdata(file);
> +
> + if (vb2_queue_is_busy(vdev->queue, file))
> + return -EBUSY;
> +
> + return vb2_delete_bufs(vdev->queue, p);
> +}
> +EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
> +
> int vb2_ioctl_reqbufs(struct file *file, void *priv,
> struct v4l2_requestbuffers *p)
> {
> diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
> index f81279492682..215654fd6581 100644
> --- a/drivers/media/v4l2-core/v4l2-dev.c
> +++ b/drivers/media/v4l2-core/v4l2-dev.c
> @@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
> SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
> SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
> SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
> + SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
> }
>
> if (is_vid || is_vbi || is_meta) {
> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
> index 4d90424cbfc4..e9dcf439f9f3 100644
> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> @@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
> v4l_print_format(&p->format, write_only);
> }
>
> +static void v4l_print_delete_buffers(const void *arg, bool write_only)
> +{
> + const struct v4l2_delete_buffers *p = arg;
> +
> + pr_cont("index=%u, count=%u\n", p->index, p->count);
> +}
> +
> static void v4l_print_streamparm(const void *arg, bool write_only)
> {
> const struct v4l2_streamparm *p = arg;
> @@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
> return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
> }
>
> +static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
> + struct file *file, void *fh, void *arg)
> +{
> + struct v4l2_delete_buffers *delete = arg;
> + int ret = check_fmt(file, delete->type);
Should we also have
memset_after(delete, 0, type);
here similar to how other ioctl handlers clear the reserved fields?
> +
> + return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
> +}
> +
> static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
> struct file *file, void *fh, void *arg)
> {
> @@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
> IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
> IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
> IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
> + IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
> };
> #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
>
> diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
> index edb733f21604..55afbde54211 100644
> --- a/include/media/v4l2-ioctl.h
> +++ b/include/media/v4l2-ioctl.h
> @@ -163,6 +163,8 @@ struct v4l2_fh;
> * :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
> * @vidioc_prepare_buf: pointer to the function that implements
> * :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
> + * @vidioc_delete_bufs: pointer to the function that implements
> + * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
> * @vidioc_overlay: pointer to the function that implements
> * :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
> * @vidioc_g_fbuf: pointer to the function that implements
> @@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
> struct v4l2_create_buffers *b);
> int (*vidioc_prepare_buf)(struct file *file, void *fh,
> struct v4l2_buffer *b);
> + int (*vidioc_delete_bufs)(struct file *file, void *fh,
> + struct v4l2_delete_buffers *d);
>
> int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
> int (*vidioc_g_fbuf)(struct file *file, void *fh,
> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> index 288477075a0e..db3bd986624e 100644
> --- a/include/media/videobuf2-core.h
> +++ b/include/media/videobuf2-core.h
> @@ -507,6 +507,7 @@ struct vb2_buf_ops {
> * @supports_requests: this queue supports the Request API.
> * @requires_requests: this queue requires the Request API. If this is set to 1,
> * then supports_requests must be set to 1 as well.
> + * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
> * @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
> * time this is called. Set to 0 when the queue is canceled.
> * If this is 1, then you cannot queue buffers from a request.
> @@ -595,6 +596,7 @@ struct vb2_queue {
> unsigned int quirk_poll_must_check_waiting_for_buffers:1;
> unsigned int supports_requests:1;
> unsigned int requires_requests:1;
> + unsigned int supports_delete_bufs:1;
> unsigned int uses_qbuf:1;
> unsigned int uses_requests:1;
> unsigned int allow_cache_hints:1;
> @@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> */
> int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>
> +/**
> + * vb2_core_delete_bufs() -
> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> + * @start: first index of the range of buffers to delete.
> + * @count: number of buffers to delete.
> + *
> + * Return: returns zero on success; an error code otherwise.
> + */
> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
> +
> /**
> * vb2_core_qbuf() - Queue a buffer from userspace
> *
> diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
> index 5a845887850b..79cea8459f52 100644
> --- a/include/media/videobuf2-v4l2.h
> +++ b/include/media/videobuf2-v4l2.h
> @@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
> */
> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> struct v4l2_buffer *b);
> +/**
> + * vb2_delete_bufs() - Delete buffers from the queue
> + *
> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> + * @d: delete parameter, passed from userspace to
> + * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
> + *
> + * The return values from this function are intended to be directly returned
> + * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
> + */
> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
>
> /**
> * vb2_qbuf() - Queue a buffer from userspace
> @@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
> int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
> int vb2_ioctl_expbuf(struct file *file, void *priv,
> struct v4l2_exportbuffer *p);
> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> + struct v4l2_delete_buffers *p);
>
> /* struct v4l2_file_operations helpers */
>
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index 13ddb5abf584..96e105149906 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
> #define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
> +#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
>
> /**
> * struct v4l2_plane - plane info for multi-planar buffers
> @@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
> __u32 reserved[5];
> };
>
> +/**
> + * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
> + * @index: the first buffer to be deleted
> + * @count: number of buffers to delete
> + * @type: enum v4l2_buf_type
> + * @reserved: future extensions
> + */
> +struct v4l2_delete_buffers {
> + __u32 index;
> + __u32 count;
> + __u32 type;
> + __u32 reserved[13];
> +};
> +
> /*
> * I O C T L C O D E S F O R V I D E O D E V I C E S
> *
> @@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
> #define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
>
> #define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
> +#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
> +
>
> /* Reminder: when adding new ioctls please add support for them to
> drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
Do we also need to add support for the new ioctl in there?
Best regards,
Tomasz
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 15/56] media: visl: Use vb2_get_buffer() instead of directly access to buffers array
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 9:38 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:38 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Daniel Almeida
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
> This allows us to change the type of the bufs in the future.
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer so check the return value of all of them.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Daniel Almeida <daniel.almeida@collabora.com>
> CC: Mauro Carvalho Chehab <mchehab@kernel.org>
> ---
> drivers/media/test-drivers/visl/visl-dec.c | 28 ++++++++++++++++------
> 1 file changed, 21 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/media/test-drivers/visl/visl-dec.c b/drivers/media/test-drivers/visl/visl-dec.c
> index 318d675e5668..ba20ea998d19 100644
> --- a/drivers/media/test-drivers/visl/visl-dec.c
> +++ b/drivers/media/test-drivers/visl/visl-dec.c
> @@ -290,13 +290,20 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
> for (i = 0; i < out_q->num_buffers; i++) {
> char entry[] = "index: %u, state: %s, request_fd: %d, ";
> u32 old_len = len;
> - char *q_status = visl_get_vb2_state(out_q->bufs[i]->state);
> + struct vb2_buffer *vb2;
> + char *q_status;
> +
> + vb2 = vb2_get_buffer(out_q, i);
> + if (!vb2)
> + continue;
> +
> + q_status = visl_get_vb2_state(vb2->state);
>
> len += scnprintf(&buf[len], TPG_STR_BUF_SZ - len,
> entry, i, q_status,
> - to_vb2_v4l2_buffer(out_q->bufs[i])->request_fd);
> + to_vb2_v4l2_buffer(vb2)->request_fd);
>
> - len += visl_fill_bytesused(to_vb2_v4l2_buffer(out_q->bufs[i]),
> + len += visl_fill_bytesused(to_vb2_v4l2_buffer(vb2),
> &buf[len],
> TPG_STR_BUF_SZ - len);
>
> @@ -342,13 +349,20 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
> len = 0;
> for (i = 0; i < cap_q->num_buffers; i++) {
> u32 old_len = len;
> - char *q_status = visl_get_vb2_state(cap_q->bufs[i]->state);
> + struct vb2_buffer *vb2;
> + char *q_status;
> +
> + vb2 = vb2_get_buffer(cap_q, i);
> + if (!vb2)
> + continue;
> +
> + q_status = visl_get_vb2_state(vb2->state);
>
> len += scnprintf(&buf[len], TPG_STR_BUF_SZ - len,
> "index: %u, status: %s, timestamp: %llu, is_held: %d",
> - cap_q->bufs[i]->index, q_status,
> - cap_q->bufs[i]->timestamp,
> - to_vb2_v4l2_buffer(cap_q->bufs[i])->is_held);
> + vb2->index, q_status,
> + vb2->timestamp,
> + to_vb2_v4l2_buffer(vb2)->is_held);
>
> tpg_gen_text(&ctx->tpg, basep, line++ * line_height, 16, &buf[old_len]);
> frame_dprintk(ctx->dev, run->dst->sequence, "%s", &buf[old_len]);
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 15/56] media: visl: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-11-09 9:38 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:38 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Daniel Almeida
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
> This allows us to change the type of the bufs in the future.
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer so check the return value of all of them.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Daniel Almeida <daniel.almeida@collabora.com>
> CC: Mauro Carvalho Chehab <mchehab@kernel.org>
> ---
> drivers/media/test-drivers/visl/visl-dec.c | 28 ++++++++++++++++------
> 1 file changed, 21 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/media/test-drivers/visl/visl-dec.c b/drivers/media/test-drivers/visl/visl-dec.c
> index 318d675e5668..ba20ea998d19 100644
> --- a/drivers/media/test-drivers/visl/visl-dec.c
> +++ b/drivers/media/test-drivers/visl/visl-dec.c
> @@ -290,13 +290,20 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
> for (i = 0; i < out_q->num_buffers; i++) {
> char entry[] = "index: %u, state: %s, request_fd: %d, ";
> u32 old_len = len;
> - char *q_status = visl_get_vb2_state(out_q->bufs[i]->state);
> + struct vb2_buffer *vb2;
> + char *q_status;
> +
> + vb2 = vb2_get_buffer(out_q, i);
> + if (!vb2)
> + continue;
> +
> + q_status = visl_get_vb2_state(vb2->state);
>
> len += scnprintf(&buf[len], TPG_STR_BUF_SZ - len,
> entry, i, q_status,
> - to_vb2_v4l2_buffer(out_q->bufs[i])->request_fd);
> + to_vb2_v4l2_buffer(vb2)->request_fd);
>
> - len += visl_fill_bytesused(to_vb2_v4l2_buffer(out_q->bufs[i]),
> + len += visl_fill_bytesused(to_vb2_v4l2_buffer(vb2),
> &buf[len],
> TPG_STR_BUF_SZ - len);
>
> @@ -342,13 +349,20 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
> len = 0;
> for (i = 0; i < cap_q->num_buffers; i++) {
> u32 old_len = len;
> - char *q_status = visl_get_vb2_state(cap_q->bufs[i]->state);
> + struct vb2_buffer *vb2;
> + char *q_status;
> +
> + vb2 = vb2_get_buffer(cap_q, i);
> + if (!vb2)
> + continue;
> +
> + q_status = visl_get_vb2_state(vb2->state);
>
> len += scnprintf(&buf[len], TPG_STR_BUF_SZ - len,
> "index: %u, status: %s, timestamp: %llu, is_held: %d",
> - cap_q->bufs[i]->index, q_status,
> - cap_q->bufs[i]->timestamp,
> - to_vb2_v4l2_buffer(cap_q->bufs[i])->is_held);
> + vb2->index, q_status,
> + vb2->timestamp,
> + to_vb2_v4l2_buffer(vb2)->is_held);
>
> tpg_gen_text(&ctx->tpg, basep, line++ * line_height, 16, &buf[old_len]);
> frame_dprintk(ctx->dev, run->dst->sequence, "%s", &buf[old_len]);
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 15/56] media: visl: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-11-09 9:38 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:38 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Daniel Almeida
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
> This allows us to change the type of the bufs in the future.
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer so check the return value of all of them.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Daniel Almeida <daniel.almeida@collabora.com>
> CC: Mauro Carvalho Chehab <mchehab@kernel.org>
> ---
> drivers/media/test-drivers/visl/visl-dec.c | 28 ++++++++++++++++------
> 1 file changed, 21 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/media/test-drivers/visl/visl-dec.c b/drivers/media/test-drivers/visl/visl-dec.c
> index 318d675e5668..ba20ea998d19 100644
> --- a/drivers/media/test-drivers/visl/visl-dec.c
> +++ b/drivers/media/test-drivers/visl/visl-dec.c
> @@ -290,13 +290,20 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
> for (i = 0; i < out_q->num_buffers; i++) {
> char entry[] = "index: %u, state: %s, request_fd: %d, ";
> u32 old_len = len;
> - char *q_status = visl_get_vb2_state(out_q->bufs[i]->state);
> + struct vb2_buffer *vb2;
> + char *q_status;
> +
> + vb2 = vb2_get_buffer(out_q, i);
> + if (!vb2)
> + continue;
> +
> + q_status = visl_get_vb2_state(vb2->state);
>
> len += scnprintf(&buf[len], TPG_STR_BUF_SZ - len,
> entry, i, q_status,
> - to_vb2_v4l2_buffer(out_q->bufs[i])->request_fd);
> + to_vb2_v4l2_buffer(vb2)->request_fd);
>
> - len += visl_fill_bytesused(to_vb2_v4l2_buffer(out_q->bufs[i]),
> + len += visl_fill_bytesused(to_vb2_v4l2_buffer(vb2),
> &buf[len],
> TPG_STR_BUF_SZ - len);
>
> @@ -342,13 +349,20 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
> len = 0;
> for (i = 0; i < cap_q->num_buffers; i++) {
> u32 old_len = len;
> - char *q_status = visl_get_vb2_state(cap_q->bufs[i]->state);
> + struct vb2_buffer *vb2;
> + char *q_status;
> +
> + vb2 = vb2_get_buffer(cap_q, i);
> + if (!vb2)
> + continue;
> +
> + q_status = visl_get_vb2_state(vb2->state);
>
> len += scnprintf(&buf[len], TPG_STR_BUF_SZ - len,
> "index: %u, status: %s, timestamp: %llu, is_held: %d",
> - cap_q->bufs[i]->index, q_status,
> - cap_q->bufs[i]->timestamp,
> - to_vb2_v4l2_buffer(cap_q->bufs[i])->is_held);
> + vb2->index, q_status,
> + vb2->timestamp,
> + to_vb2_v4l2_buffer(vb2)->is_held);
>
> tpg_gen_text(&ctx->tpg, basep, line++ * line_height, 16, &buf[old_len]);
> frame_dprintk(ctx->dev, run->dst->sequence, "%s", &buf[old_len]);
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 56/56] media: test-drivers: Use helper for DELETE_BUFS ioctl
2023-10-31 16:31 ` Benjamin Gaignard
(?)
@ 2023-11-09 9:43 ` Tomasz Figa
-1 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 9:43 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:31:04PM +0100, Benjamin Gaignard wrote:
> Allow test drivers to use DELETE_BUFS by adding vb2_ioctl_delete_bufs() helper.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> drivers/media/test-drivers/vicodec/vicodec-core.c | 2 ++
> drivers/media/test-drivers/vimc/vimc-capture.c | 2 ++
> drivers/media/test-drivers/visl/visl-video.c | 2 ++
> drivers/media/test-drivers/vivid/vivid-core.c | 13 ++++++++++---
> 4 files changed, 16 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
> index 69cbe2c094e1..f14a8fd506d0 100644
> --- a/drivers/media/test-drivers/vicodec/vicodec-core.c
> +++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
> @@ -1339,6 +1339,7 @@ static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
> .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
> .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
> .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
> + .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
>
> .vidioc_streamon = v4l2_m2m_ioctl_streamon,
> .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
> @@ -1725,6 +1726,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
> dst_vq->mem_ops = &vb2_vmalloc_memops;
> dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> dst_vq->lock = src_vq->lock;
> + dst_vq->supports_delete_bufs = true;
Since we have to explicitly provide the vidioc_delete_bufs callback anyway,
is there any value in having a separate supports_delete_bufs flag? Or we
envision that some drivers would support deleting buffers only for some
queues?
Best regards,
Tomasz
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 56/56] media: test-drivers: Use helper for DELETE_BUFS ioctl
@ 2023-11-09 9:43 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 9:43 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:31:04PM +0100, Benjamin Gaignard wrote:
> Allow test drivers to use DELETE_BUFS by adding vb2_ioctl_delete_bufs() helper.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> drivers/media/test-drivers/vicodec/vicodec-core.c | 2 ++
> drivers/media/test-drivers/vimc/vimc-capture.c | 2 ++
> drivers/media/test-drivers/visl/visl-video.c | 2 ++
> drivers/media/test-drivers/vivid/vivid-core.c | 13 ++++++++++---
> 4 files changed, 16 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
> index 69cbe2c094e1..f14a8fd506d0 100644
> --- a/drivers/media/test-drivers/vicodec/vicodec-core.c
> +++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
> @@ -1339,6 +1339,7 @@ static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
> .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
> .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
> .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
> + .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
>
> .vidioc_streamon = v4l2_m2m_ioctl_streamon,
> .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
> @@ -1725,6 +1726,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
> dst_vq->mem_ops = &vb2_vmalloc_memops;
> dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> dst_vq->lock = src_vq->lock;
> + dst_vq->supports_delete_bufs = true;
Since we have to explicitly provide the vidioc_delete_bufs callback anyway,
is there any value in having a separate supports_delete_bufs flag? Or we
envision that some drivers would support deleting buffers only for some
queues?
Best regards,
Tomasz
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 56/56] media: test-drivers: Use helper for DELETE_BUFS ioctl
@ 2023-11-09 9:43 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 9:43 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Tue, Oct 31, 2023 at 05:31:04PM +0100, Benjamin Gaignard wrote:
> Allow test drivers to use DELETE_BUFS by adding vb2_ioctl_delete_bufs() helper.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> drivers/media/test-drivers/vicodec/vicodec-core.c | 2 ++
> drivers/media/test-drivers/vimc/vimc-capture.c | 2 ++
> drivers/media/test-drivers/visl/visl-video.c | 2 ++
> drivers/media/test-drivers/vivid/vivid-core.c | 13 ++++++++++---
> 4 files changed, 16 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
> index 69cbe2c094e1..f14a8fd506d0 100644
> --- a/drivers/media/test-drivers/vicodec/vicodec-core.c
> +++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
> @@ -1339,6 +1339,7 @@ static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
> .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
> .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
> .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
> + .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
>
> .vidioc_streamon = v4l2_m2m_ioctl_streamon,
> .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
> @@ -1725,6 +1726,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
> dst_vq->mem_ops = &vb2_vmalloc_memops;
> dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> dst_vq->lock = src_vq->lock;
> + dst_vq->supports_delete_bufs = true;
Since we have to explicitly provide the vidioc_delete_bufs callback anyway,
is there any value in having a separate supports_delete_bufs flag? Or we
envision that some drivers would support deleting buffers only for some
queues?
Best regards,
Tomasz
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 18/56] media: dvb-core: Use vb2_get_buffer() instead of directly access to buffers array
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 9:46 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:46 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
> This allows us to change the type of the bufs in the future.
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer so check the return value of all of them.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/dvb-core/dvb_vb2.c | 14 ++++++++------
> 1 file changed, 8 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
> index b322ef179f05..3a966fdf814c 100644
> --- a/drivers/media/dvb-core/dvb_vb2.c
> +++ b/drivers/media/dvb-core/dvb_vb2.c
> @@ -355,12 +355,13 @@ int dvb_vb2_reqbufs(struct dvb_vb2_ctx *ctx, struct dmx_requestbuffers *req)
> int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> {
> struct vb2_queue *q = &ctx->vb_q;
> + struct vb2_buffer *vb2 = vb2_get_buffer(q, b->index);
>
> - if (b->index >= q->num_buffers) {
> - dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> + if (!vb2) {
> + dprintk(1, "[%s] invalid buffer index\n", ctx->name);
> return -EINVAL;
> }
> - vb2_core_querybuf(&ctx->vb_q, q->bufs[b->index], b);
> + vb2_core_querybuf(&ctx->vb_q, vb2, b);
> dprintk(3, "[%s] index=%d\n", ctx->name, b->index);
> return 0;
> }
> @@ -385,13 +386,14 @@ int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp)
> int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> {
> struct vb2_queue *q = &ctx->vb_q;
> + struct vb2_buffer *vb2 = vb2_get_buffer(q, b->index);
> int ret;
>
> - if (b->index >= q->num_buffers) {
> - dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> + if (!vb2) {
> + dprintk(1, "[%s] invalid buffer index\n", ctx->name);
> return -EINVAL;
> }
> - ret = vb2_core_qbuf(&ctx->vb_q, q->bufs[b->index], b, NULL);
> + ret = vb2_core_qbuf(&ctx->vb_q, vb2, b, NULL);
> if (ret) {
> dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
> b->index, ret);
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 18/56] media: dvb-core: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-11-09 9:46 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:46 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
> This allows us to change the type of the bufs in the future.
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer so check the return value of all of them.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/dvb-core/dvb_vb2.c | 14 ++++++++------
> 1 file changed, 8 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
> index b322ef179f05..3a966fdf814c 100644
> --- a/drivers/media/dvb-core/dvb_vb2.c
> +++ b/drivers/media/dvb-core/dvb_vb2.c
> @@ -355,12 +355,13 @@ int dvb_vb2_reqbufs(struct dvb_vb2_ctx *ctx, struct dmx_requestbuffers *req)
> int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> {
> struct vb2_queue *q = &ctx->vb_q;
> + struct vb2_buffer *vb2 = vb2_get_buffer(q, b->index);
>
> - if (b->index >= q->num_buffers) {
> - dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> + if (!vb2) {
> + dprintk(1, "[%s] invalid buffer index\n", ctx->name);
> return -EINVAL;
> }
> - vb2_core_querybuf(&ctx->vb_q, q->bufs[b->index], b);
> + vb2_core_querybuf(&ctx->vb_q, vb2, b);
> dprintk(3, "[%s] index=%d\n", ctx->name, b->index);
> return 0;
> }
> @@ -385,13 +386,14 @@ int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp)
> int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> {
> struct vb2_queue *q = &ctx->vb_q;
> + struct vb2_buffer *vb2 = vb2_get_buffer(q, b->index);
> int ret;
>
> - if (b->index >= q->num_buffers) {
> - dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> + if (!vb2) {
> + dprintk(1, "[%s] invalid buffer index\n", ctx->name);
> return -EINVAL;
> }
> - ret = vb2_core_qbuf(&ctx->vb_q, q->bufs[b->index], b, NULL);
> + ret = vb2_core_qbuf(&ctx->vb_q, vb2, b, NULL);
> if (ret) {
> dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
> b->index, ret);
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 18/56] media: dvb-core: Use vb2_get_buffer() instead of directly access to buffers array
@ 2023-11-09 9:46 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:46 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_buffer() instead of direct access to the vb2_queue bufs array.
> This allows us to change the type of the bufs in the future.
> After each call to vb2_get_buffer() we need to be sure that we get
> a valid pointer so check the return value of all of them.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/dvb-core/dvb_vb2.c | 14 ++++++++------
> 1 file changed, 8 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
> index b322ef179f05..3a966fdf814c 100644
> --- a/drivers/media/dvb-core/dvb_vb2.c
> +++ b/drivers/media/dvb-core/dvb_vb2.c
> @@ -355,12 +355,13 @@ int dvb_vb2_reqbufs(struct dvb_vb2_ctx *ctx, struct dmx_requestbuffers *req)
> int dvb_vb2_querybuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> {
> struct vb2_queue *q = &ctx->vb_q;
> + struct vb2_buffer *vb2 = vb2_get_buffer(q, b->index);
>
> - if (b->index >= q->num_buffers) {
> - dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> + if (!vb2) {
> + dprintk(1, "[%s] invalid buffer index\n", ctx->name);
> return -EINVAL;
> }
> - vb2_core_querybuf(&ctx->vb_q, q->bufs[b->index], b);
> + vb2_core_querybuf(&ctx->vb_q, vb2, b);
> dprintk(3, "[%s] index=%d\n", ctx->name, b->index);
> return 0;
> }
> @@ -385,13 +386,14 @@ int dvb_vb2_expbuf(struct dvb_vb2_ctx *ctx, struct dmx_exportbuffer *exp)
> int dvb_vb2_qbuf(struct dvb_vb2_ctx *ctx, struct dmx_buffer *b)
> {
> struct vb2_queue *q = &ctx->vb_q;
> + struct vb2_buffer *vb2 = vb2_get_buffer(q, b->index);
> int ret;
>
> - if (b->index >= q->num_buffers) {
> - dprintk(1, "[%s] buffer index out of range\n", ctx->name);
> + if (!vb2) {
> + dprintk(1, "[%s] invalid buffer index\n", ctx->name);
> return -EINVAL;
> }
> - ret = vb2_core_qbuf(&ctx->vb_q, q->bufs[b->index], b, NULL);
> + ret = vb2_core_qbuf(&ctx->vb_q, vb2, b, NULL);
> if (ret) {
> dprintk(1, "[%s] index=%d errno=%d\n", ctx->name,
> b->index, ret);
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 56/56] media: test-drivers: Use helper for DELETE_BUFS ioctl
2023-11-09 9:43 ` Tomasz Figa
(?)
@ 2023-11-09 9:46 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 9:46 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 09/11/2023 à 10:43, Tomasz Figa a écrit :
> On Tue, Oct 31, 2023 at 05:31:04PM +0100, Benjamin Gaignard wrote:
>> Allow test drivers to use DELETE_BUFS by adding vb2_ioctl_delete_bufs() helper.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> drivers/media/test-drivers/vicodec/vicodec-core.c | 2 ++
>> drivers/media/test-drivers/vimc/vimc-capture.c | 2 ++
>> drivers/media/test-drivers/visl/visl-video.c | 2 ++
>> drivers/media/test-drivers/vivid/vivid-core.c | 13 ++++++++++---
>> 4 files changed, 16 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
>> index 69cbe2c094e1..f14a8fd506d0 100644
>> --- a/drivers/media/test-drivers/vicodec/vicodec-core.c
>> +++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
>> @@ -1339,6 +1339,7 @@ static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
>> .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
>> .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
>> .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
>> + .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
>>
>> .vidioc_streamon = v4l2_m2m_ioctl_streamon,
>> .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
>> @@ -1725,6 +1726,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
>> dst_vq->mem_ops = &vb2_vmalloc_memops;
>> dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
>> dst_vq->lock = src_vq->lock;
>> + dst_vq->supports_delete_bufs = true;
> Since we have to explicitly provide the vidioc_delete_bufs callback anyway,
> is there any value in having a separate supports_delete_bufs flag? Or we
> envision that some drivers would support deleting buffers only for some
> queues?
That exactly the case for Hantro driver, it can support deleting buffers on
capture queue but not on output queue.
>
> Best regards,
> Tomasz
>
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 56/56] media: test-drivers: Use helper for DELETE_BUFS ioctl
@ 2023-11-09 9:46 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 9:46 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 09/11/2023 à 10:43, Tomasz Figa a écrit :
> On Tue, Oct 31, 2023 at 05:31:04PM +0100, Benjamin Gaignard wrote:
>> Allow test drivers to use DELETE_BUFS by adding vb2_ioctl_delete_bufs() helper.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> drivers/media/test-drivers/vicodec/vicodec-core.c | 2 ++
>> drivers/media/test-drivers/vimc/vimc-capture.c | 2 ++
>> drivers/media/test-drivers/visl/visl-video.c | 2 ++
>> drivers/media/test-drivers/vivid/vivid-core.c | 13 ++++++++++---
>> 4 files changed, 16 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
>> index 69cbe2c094e1..f14a8fd506d0 100644
>> --- a/drivers/media/test-drivers/vicodec/vicodec-core.c
>> +++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
>> @@ -1339,6 +1339,7 @@ static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
>> .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
>> .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
>> .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
>> + .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
>>
>> .vidioc_streamon = v4l2_m2m_ioctl_streamon,
>> .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
>> @@ -1725,6 +1726,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
>> dst_vq->mem_ops = &vb2_vmalloc_memops;
>> dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
>> dst_vq->lock = src_vq->lock;
>> + dst_vq->supports_delete_bufs = true;
> Since we have to explicitly provide the vidioc_delete_bufs callback anyway,
> is there any value in having a separate supports_delete_bufs flag? Or we
> envision that some drivers would support deleting buffers only for some
> queues?
That exactly the case for Hantro driver, it can support deleting buffers on
capture queue but not on output queue.
>
> Best regards,
> Tomasz
>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 56/56] media: test-drivers: Use helper for DELETE_BUFS ioctl
@ 2023-11-09 9:46 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 9:46 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 09/11/2023 à 10:43, Tomasz Figa a écrit :
> On Tue, Oct 31, 2023 at 05:31:04PM +0100, Benjamin Gaignard wrote:
>> Allow test drivers to use DELETE_BUFS by adding vb2_ioctl_delete_bufs() helper.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> drivers/media/test-drivers/vicodec/vicodec-core.c | 2 ++
>> drivers/media/test-drivers/vimc/vimc-capture.c | 2 ++
>> drivers/media/test-drivers/visl/visl-video.c | 2 ++
>> drivers/media/test-drivers/vivid/vivid-core.c | 13 ++++++++++---
>> 4 files changed, 16 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
>> index 69cbe2c094e1..f14a8fd506d0 100644
>> --- a/drivers/media/test-drivers/vicodec/vicodec-core.c
>> +++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
>> @@ -1339,6 +1339,7 @@ static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
>> .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
>> .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
>> .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
>> + .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
>>
>> .vidioc_streamon = v4l2_m2m_ioctl_streamon,
>> .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
>> @@ -1725,6 +1726,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
>> dst_vq->mem_ops = &vb2_vmalloc_memops;
>> dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
>> dst_vq->lock = src_vq->lock;
>> + dst_vq->supports_delete_bufs = true;
> Since we have to explicitly provide the vidioc_delete_bufs callback anyway,
> is there any value in having a separate supports_delete_bufs flag? Or we
> envision that some drivers would support deleting buffers only for some
> queues?
That exactly the case for Hantro driver, it can support deleting buffers on
capture queue but not on output queue.
>
> Best regards,
> Tomasz
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 56/56] media: test-drivers: Use helper for DELETE_BUFS ioctl
2023-11-09 9:46 ` Benjamin Gaignard
(?)
@ 2023-11-09 9:48 ` Tomasz Figa
-1 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 9:48 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Thu, Nov 9, 2023 at 6:46 PM Benjamin Gaignard
<benjamin.gaignard@collabora.com> wrote:
>
>
> Le 09/11/2023 à 10:43, Tomasz Figa a écrit :
> > On Tue, Oct 31, 2023 at 05:31:04PM +0100, Benjamin Gaignard wrote:
> >> Allow test drivers to use DELETE_BUFS by adding vb2_ioctl_delete_bufs() helper.
> >>
> >> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> >> ---
> >> drivers/media/test-drivers/vicodec/vicodec-core.c | 2 ++
> >> drivers/media/test-drivers/vimc/vimc-capture.c | 2 ++
> >> drivers/media/test-drivers/visl/visl-video.c | 2 ++
> >> drivers/media/test-drivers/vivid/vivid-core.c | 13 ++++++++++---
> >> 4 files changed, 16 insertions(+), 3 deletions(-)
> >>
> >> diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
> >> index 69cbe2c094e1..f14a8fd506d0 100644
> >> --- a/drivers/media/test-drivers/vicodec/vicodec-core.c
> >> +++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
> >> @@ -1339,6 +1339,7 @@ static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
> >> .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
> >> .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
> >> .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
> >> + .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
> >>
> >> .vidioc_streamon = v4l2_m2m_ioctl_streamon,
> >> .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
> >> @@ -1725,6 +1726,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
> >> dst_vq->mem_ops = &vb2_vmalloc_memops;
> >> dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> >> dst_vq->lock = src_vq->lock;
> >> + dst_vq->supports_delete_bufs = true;
> > Since we have to explicitly provide the vidioc_delete_bufs callback anyway,
> > is there any value in having a separate supports_delete_bufs flag? Or we
> > envision that some drivers would support deleting buffers only for some
> > queues?
>
> That exactly the case for Hantro driver, it can support deleting buffers on
> capture queue but not on output queue.
Fair enough.
Best regards,
Tomasz
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 56/56] media: test-drivers: Use helper for DELETE_BUFS ioctl
@ 2023-11-09 9:48 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 9:48 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Thu, Nov 9, 2023 at 6:46 PM Benjamin Gaignard
<benjamin.gaignard@collabora.com> wrote:
>
>
> Le 09/11/2023 à 10:43, Tomasz Figa a écrit :
> > On Tue, Oct 31, 2023 at 05:31:04PM +0100, Benjamin Gaignard wrote:
> >> Allow test drivers to use DELETE_BUFS by adding vb2_ioctl_delete_bufs() helper.
> >>
> >> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> >> ---
> >> drivers/media/test-drivers/vicodec/vicodec-core.c | 2 ++
> >> drivers/media/test-drivers/vimc/vimc-capture.c | 2 ++
> >> drivers/media/test-drivers/visl/visl-video.c | 2 ++
> >> drivers/media/test-drivers/vivid/vivid-core.c | 13 ++++++++++---
> >> 4 files changed, 16 insertions(+), 3 deletions(-)
> >>
> >> diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
> >> index 69cbe2c094e1..f14a8fd506d0 100644
> >> --- a/drivers/media/test-drivers/vicodec/vicodec-core.c
> >> +++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
> >> @@ -1339,6 +1339,7 @@ static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
> >> .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
> >> .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
> >> .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
> >> + .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
> >>
> >> .vidioc_streamon = v4l2_m2m_ioctl_streamon,
> >> .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
> >> @@ -1725,6 +1726,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
> >> dst_vq->mem_ops = &vb2_vmalloc_memops;
> >> dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> >> dst_vq->lock = src_vq->lock;
> >> + dst_vq->supports_delete_bufs = true;
> > Since we have to explicitly provide the vidioc_delete_bufs callback anyway,
> > is there any value in having a separate supports_delete_bufs flag? Or we
> > envision that some drivers would support deleting buffers only for some
> > queues?
>
> That exactly the case for Hantro driver, it can support deleting buffers on
> capture queue but not on output queue.
Fair enough.
Best regards,
Tomasz
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 56/56] media: test-drivers: Use helper for DELETE_BUFS ioctl
@ 2023-11-09 9:48 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-09 9:48 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Thu, Nov 9, 2023 at 6:46 PM Benjamin Gaignard
<benjamin.gaignard@collabora.com> wrote:
>
>
> Le 09/11/2023 à 10:43, Tomasz Figa a écrit :
> > On Tue, Oct 31, 2023 at 05:31:04PM +0100, Benjamin Gaignard wrote:
> >> Allow test drivers to use DELETE_BUFS by adding vb2_ioctl_delete_bufs() helper.
> >>
> >> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> >> ---
> >> drivers/media/test-drivers/vicodec/vicodec-core.c | 2 ++
> >> drivers/media/test-drivers/vimc/vimc-capture.c | 2 ++
> >> drivers/media/test-drivers/visl/visl-video.c | 2 ++
> >> drivers/media/test-drivers/vivid/vivid-core.c | 13 ++++++++++---
> >> 4 files changed, 16 insertions(+), 3 deletions(-)
> >>
> >> diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
> >> index 69cbe2c094e1..f14a8fd506d0 100644
> >> --- a/drivers/media/test-drivers/vicodec/vicodec-core.c
> >> +++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
> >> @@ -1339,6 +1339,7 @@ static const struct v4l2_ioctl_ops vicodec_ioctl_ops = {
> >> .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf,
> >> .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs,
> >> .vidioc_expbuf = v4l2_m2m_ioctl_expbuf,
> >> + .vidioc_delete_bufs = v4l2_m2m_ioctl_delete_bufs,
> >>
> >> .vidioc_streamon = v4l2_m2m_ioctl_streamon,
> >> .vidioc_streamoff = v4l2_m2m_ioctl_streamoff,
> >> @@ -1725,6 +1726,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
> >> dst_vq->mem_ops = &vb2_vmalloc_memops;
> >> dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
> >> dst_vq->lock = src_vq->lock;
> >> + dst_vq->supports_delete_bufs = true;
> > Since we have to explicitly provide the vidioc_delete_bufs callback anyway,
> > is there any value in having a separate supports_delete_bufs flag? Or we
> > envision that some drivers would support deleting buffers only for some
> > queues?
>
> That exactly the case for Hantro driver, it can support deleting buffers on
> capture queue but not on output queue.
Fair enough.
Best regards,
Tomasz
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 19/56] media: dvb-core: Do not initialize twice queue num_buffer field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 9:50 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:50 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> The above memset already zeroed all the ctx fields, it is useless
> to do it here again.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> drivers/media/dvb-core/dvb_vb2.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
> index 3a966fdf814c..a731b755a0b9 100644
> --- a/drivers/media/dvb-core/dvb_vb2.c
> +++ b/drivers/media/dvb-core/dvb_vb2.c
> @@ -177,7 +177,6 @@ int dvb_vb2_init(struct dvb_vb2_ctx *ctx, const char *name, int nonblocking)
> q->ops = &dvb_vb2_qops;
> q->mem_ops = &vb2_vmalloc_memops;
> q->buf_ops = &dvb_vb2_buf_ops;
> - q->num_buffers = 0;
A few lines above this one is this:
q->is_output = 0;
Can this also be included in this (cleanup) patch?
Regards,
Andrzej
> ret = vb2_core_queue_init(q);
> if (ret) {
> ctx->state = DVB_VB2_STATE_NONE;
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 19/56] media: dvb-core: Do not initialize twice queue num_buffer field
@ 2023-11-09 9:50 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:50 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> The above memset already zeroed all the ctx fields, it is useless
> to do it here again.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> drivers/media/dvb-core/dvb_vb2.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
> index 3a966fdf814c..a731b755a0b9 100644
> --- a/drivers/media/dvb-core/dvb_vb2.c
> +++ b/drivers/media/dvb-core/dvb_vb2.c
> @@ -177,7 +177,6 @@ int dvb_vb2_init(struct dvb_vb2_ctx *ctx, const char *name, int nonblocking)
> q->ops = &dvb_vb2_qops;
> q->mem_ops = &vb2_vmalloc_memops;
> q->buf_ops = &dvb_vb2_buf_ops;
> - q->num_buffers = 0;
A few lines above this one is this:
q->is_output = 0;
Can this also be included in this (cleanup) patch?
Regards,
Andrzej
> ret = vb2_core_queue_init(q);
> if (ret) {
> ctx->state = DVB_VB2_STATE_NONE;
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 19/56] media: dvb-core: Do not initialize twice queue num_buffer field
@ 2023-11-09 9:50 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:50 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> The above memset already zeroed all the ctx fields, it is useless
> to do it here again.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> drivers/media/dvb-core/dvb_vb2.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/drivers/media/dvb-core/dvb_vb2.c b/drivers/media/dvb-core/dvb_vb2.c
> index 3a966fdf814c..a731b755a0b9 100644
> --- a/drivers/media/dvb-core/dvb_vb2.c
> +++ b/drivers/media/dvb-core/dvb_vb2.c
> @@ -177,7 +177,6 @@ int dvb_vb2_init(struct dvb_vb2_ctx *ctx, const char *name, int nonblocking)
> q->ops = &dvb_vb2_qops;
> q->mem_ops = &vb2_vmalloc_memops;
> q->buf_ops = &dvb_vb2_buf_ops;
> - q->num_buffers = 0;
A few lines above this one is this:
q->is_output = 0;
Can this also be included in this (cleanup) patch?
Regards,
Andrzej
> ret = vb2_core_queue_init(q);
> if (ret) {
> ctx->state = DVB_VB2_STATE_NONE;
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 20/56] media: dvb-frontends: rtl2832: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 9:56 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:56 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Antti Palosaari
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Antti Palosaari <crope@iki.fi>
> ---
> drivers/media/dvb-frontends/rtl2832_sdr.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/dvb-frontends/rtl2832_sdr.c b/drivers/media/dvb-frontends/rtl2832_sdr.c
> index 02c619e51641..023db6e793f8 100644
> --- a/drivers/media/dvb-frontends/rtl2832_sdr.c
> +++ b/drivers/media/dvb-frontends/rtl2832_sdr.c
> @@ -439,12 +439,13 @@ static int rtl2832_sdr_queue_setup(struct vb2_queue *vq,
> {
> struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
> struct platform_device *pdev = dev->pdev;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev_dbg(&pdev->dev, "nbuffers=%d\n", *nbuffers);
>
> /* Need at least 8 buffers */
> - if (vq->num_buffers + *nbuffers < 8)
> - *nbuffers = 8 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 8)
> + *nbuffers = 8 - q_num_bufs;
> *nplanes = 1;
> sizes[0] = PAGE_ALIGN(dev->buffersize);
> dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]);
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 20/56] media: dvb-frontends: rtl2832: Stop direct calls to queue num_buffers field
@ 2023-11-09 9:56 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:56 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Antti Palosaari
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Antti Palosaari <crope@iki.fi>
> ---
> drivers/media/dvb-frontends/rtl2832_sdr.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/dvb-frontends/rtl2832_sdr.c b/drivers/media/dvb-frontends/rtl2832_sdr.c
> index 02c619e51641..023db6e793f8 100644
> --- a/drivers/media/dvb-frontends/rtl2832_sdr.c
> +++ b/drivers/media/dvb-frontends/rtl2832_sdr.c
> @@ -439,12 +439,13 @@ static int rtl2832_sdr_queue_setup(struct vb2_queue *vq,
> {
> struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
> struct platform_device *pdev = dev->pdev;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev_dbg(&pdev->dev, "nbuffers=%d\n", *nbuffers);
>
> /* Need at least 8 buffers */
> - if (vq->num_buffers + *nbuffers < 8)
> - *nbuffers = 8 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 8)
> + *nbuffers = 8 - q_num_bufs;
> *nplanes = 1;
> sizes[0] = PAGE_ALIGN(dev->buffersize);
> dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]);
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 20/56] media: dvb-frontends: rtl2832: Stop direct calls to queue num_buffers field
@ 2023-11-09 9:56 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 9:56 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Antti Palosaari
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Antti Palosaari <crope@iki.fi>
> ---
> drivers/media/dvb-frontends/rtl2832_sdr.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/dvb-frontends/rtl2832_sdr.c b/drivers/media/dvb-frontends/rtl2832_sdr.c
> index 02c619e51641..023db6e793f8 100644
> --- a/drivers/media/dvb-frontends/rtl2832_sdr.c
> +++ b/drivers/media/dvb-frontends/rtl2832_sdr.c
> @@ -439,12 +439,13 @@ static int rtl2832_sdr_queue_setup(struct vb2_queue *vq,
> {
> struct rtl2832_sdr_dev *dev = vb2_get_drv_priv(vq);
> struct platform_device *pdev = dev->pdev;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev_dbg(&pdev->dev, "nbuffers=%d\n", *nbuffers);
>
> /* Need at least 8 buffers */
> - if (vq->num_buffers + *nbuffers < 8)
> - *nbuffers = 8 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 8)
> + *nbuffers = 8 - q_num_bufs;
> *nplanes = 1;
> sizes[0] = PAGE_ALIGN(dev->buffersize);
> dev_dbg(&pdev->dev, "nbuffers=%d sizes[0]=%d\n", *nbuffers, sizes[0]);
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 21/56] media: pci: dt3155: Remove useless check
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 10:03 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:03 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> min_buffers_needed is already set to 2 so remove this useless
> check.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/pci/dt3155/dt3155.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/media/pci/dt3155/dt3155.c b/drivers/media/pci/dt3155/dt3155.c
> index 548156b199cc..d09cde2f6ee4 100644
> --- a/drivers/media/pci/dt3155/dt3155.c
> +++ b/drivers/media/pci/dt3155/dt3155.c
> @@ -128,8 +128,6 @@ dt3155_queue_setup(struct vb2_queue *vq,
> struct dt3155_priv *pd = vb2_get_drv_priv(vq);
> unsigned size = pd->width * pd->height;
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> if (*num_planes)
> return sizes[0] < size ? -EINVAL : 0;
> *num_planes = 1;
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 21/56] media: pci: dt3155: Remove useless check
@ 2023-11-09 10:03 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:03 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> min_buffers_needed is already set to 2 so remove this useless
> check.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/pci/dt3155/dt3155.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/media/pci/dt3155/dt3155.c b/drivers/media/pci/dt3155/dt3155.c
> index 548156b199cc..d09cde2f6ee4 100644
> --- a/drivers/media/pci/dt3155/dt3155.c
> +++ b/drivers/media/pci/dt3155/dt3155.c
> @@ -128,8 +128,6 @@ dt3155_queue_setup(struct vb2_queue *vq,
> struct dt3155_priv *pd = vb2_get_drv_priv(vq);
> unsigned size = pd->width * pd->height;
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> if (*num_planes)
> return sizes[0] < size ? -EINVAL : 0;
> *num_planes = 1;
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 21/56] media: pci: dt3155: Remove useless check
@ 2023-11-09 10:03 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:03 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> min_buffers_needed is already set to 2 so remove this useless
> check.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/pci/dt3155/dt3155.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/media/pci/dt3155/dt3155.c b/drivers/media/pci/dt3155/dt3155.c
> index 548156b199cc..d09cde2f6ee4 100644
> --- a/drivers/media/pci/dt3155/dt3155.c
> +++ b/drivers/media/pci/dt3155/dt3155.c
> @@ -128,8 +128,6 @@ dt3155_queue_setup(struct vb2_queue *vq,
> struct dt3155_priv *pd = vb2_get_drv_priv(vq);
> unsigned size = pd->width * pd->height;
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> if (*num_planes)
> return sizes[0] < size ? -EINVAL : 0;
> *num_planes = 1;
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 22/56] media: pci: tw686x: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 10:05 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:05 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> ---
> drivers/media/pci/tw686x/tw686x-video.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/pci/tw686x/tw686x-video.c b/drivers/media/pci/tw686x/tw686x-video.c
> index 3ebf7a2c95f0..6bc6d143d18c 100644
> --- a/drivers/media/pci/tw686x/tw686x-video.c
> +++ b/drivers/media/pci/tw686x/tw686x-video.c
> @@ -423,6 +423,7 @@ static int tw686x_queue_setup(struct vb2_queue *vq,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct tw686x_video_channel *vc = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> unsigned int szimage =
> (vc->width * vc->height * vc->format->depth) >> 3;
>
> @@ -430,8 +431,8 @@ static int tw686x_queue_setup(struct vb2_queue *vq,
> * Let's request at least three buffers: two for the
> * DMA engine and one for userspace.
> */
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes) {
> if (*nplanes != 1 || sizes[0] < szimage)
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 22/56] media: pci: tw686x: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:05 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:05 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> ---
> drivers/media/pci/tw686x/tw686x-video.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/pci/tw686x/tw686x-video.c b/drivers/media/pci/tw686x/tw686x-video.c
> index 3ebf7a2c95f0..6bc6d143d18c 100644
> --- a/drivers/media/pci/tw686x/tw686x-video.c
> +++ b/drivers/media/pci/tw686x/tw686x-video.c
> @@ -423,6 +423,7 @@ static int tw686x_queue_setup(struct vb2_queue *vq,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct tw686x_video_channel *vc = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> unsigned int szimage =
> (vc->width * vc->height * vc->format->depth) >> 3;
>
> @@ -430,8 +431,8 @@ static int tw686x_queue_setup(struct vb2_queue *vq,
> * Let's request at least three buffers: two for the
> * DMA engine and one for userspace.
> */
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes) {
> if (*nplanes != 1 || sizes[0] < szimage)
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 22/56] media: pci: tw686x: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:05 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:05 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> ---
> drivers/media/pci/tw686x/tw686x-video.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/pci/tw686x/tw686x-video.c b/drivers/media/pci/tw686x/tw686x-video.c
> index 3ebf7a2c95f0..6bc6d143d18c 100644
> --- a/drivers/media/pci/tw686x/tw686x-video.c
> +++ b/drivers/media/pci/tw686x/tw686x-video.c
> @@ -423,6 +423,7 @@ static int tw686x_queue_setup(struct vb2_queue *vq,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct tw686x_video_channel *vc = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> unsigned int szimage =
> (vc->width * vc->height * vc->format->depth) >> 3;
>
> @@ -430,8 +431,8 @@ static int tw686x_queue_setup(struct vb2_queue *vq,
> * Let's request at least three buffers: two for the
> * DMA engine and one for userspace.
> */
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes) {
> if (*nplanes != 1 || sizes[0] < szimage)
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 23/56] media: pci: cx18: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 10:07 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:07 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Sergey Kozlov, Abylay Ospan
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Sergey Kozlov <serjk@netup.ru>
> CC: Abylay Ospan <aospan@netup.ru>
> ---
> drivers/media/pci/cx18/cx18-streams.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/pci/cx18/cx18-streams.c b/drivers/media/pci/cx18/cx18-streams.c
> index 597472754c4c..cfbc4a907802 100644
> --- a/drivers/media/pci/cx18/cx18-streams.c
> +++ b/drivers/media/pci/cx18/cx18-streams.c
> @@ -104,6 +104,7 @@ static int cx18_queue_setup(struct vb2_queue *vq,
> unsigned int *nbuffers, unsigned int *nplanes,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> struct cx18_stream *s = vb2_get_drv_priv(vq);
> struct cx18 *cx = s->cx;
> unsigned int szimage;
> @@ -121,8 +122,8 @@ static int cx18_queue_setup(struct vb2_queue *vq,
> * Let's request at least three buffers: two for the
> * DMA engine and one for userspace.
> */
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes) {
> if (*nplanes != 1 || sizes[0] < szimage)
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 23/56] media: pci: cx18: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:07 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:07 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Sergey Kozlov, Abylay Ospan
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Sergey Kozlov <serjk@netup.ru>
> CC: Abylay Ospan <aospan@netup.ru>
> ---
> drivers/media/pci/cx18/cx18-streams.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/pci/cx18/cx18-streams.c b/drivers/media/pci/cx18/cx18-streams.c
> index 597472754c4c..cfbc4a907802 100644
> --- a/drivers/media/pci/cx18/cx18-streams.c
> +++ b/drivers/media/pci/cx18/cx18-streams.c
> @@ -104,6 +104,7 @@ static int cx18_queue_setup(struct vb2_queue *vq,
> unsigned int *nbuffers, unsigned int *nplanes,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> struct cx18_stream *s = vb2_get_drv_priv(vq);
> struct cx18 *cx = s->cx;
> unsigned int szimage;
> @@ -121,8 +122,8 @@ static int cx18_queue_setup(struct vb2_queue *vq,
> * Let's request at least three buffers: two for the
> * DMA engine and one for userspace.
> */
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes) {
> if (*nplanes != 1 || sizes[0] < szimage)
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 23/56] media: pci: cx18: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:07 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:07 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Sergey Kozlov, Abylay Ospan
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Sergey Kozlov <serjk@netup.ru>
> CC: Abylay Ospan <aospan@netup.ru>
> ---
> drivers/media/pci/cx18/cx18-streams.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/pci/cx18/cx18-streams.c b/drivers/media/pci/cx18/cx18-streams.c
> index 597472754c4c..cfbc4a907802 100644
> --- a/drivers/media/pci/cx18/cx18-streams.c
> +++ b/drivers/media/pci/cx18/cx18-streams.c
> @@ -104,6 +104,7 @@ static int cx18_queue_setup(struct vb2_queue *vq,
> unsigned int *nbuffers, unsigned int *nplanes,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> struct cx18_stream *s = vb2_get_drv_priv(vq);
> struct cx18 *cx = s->cx;
> unsigned int szimage;
> @@ -121,8 +122,8 @@ static int cx18_queue_setup(struct vb2_queue *vq,
> * Let's request at least three buffers: two for the
> * DMA engine and one for userspace.
> */
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes) {
> if (*nplanes != 1 || sizes[0] < szimage)
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 24/56] media: pci: netup_unidvb: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 10:09 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:09 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Sergey Kozlov, Abylay Ospan
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Sergey Kozlov <serjk@netup.ru>
> CC: Abylay Ospan <aospan@netup.ru>
> ---
> drivers/media/pci/netup_unidvb/netup_unidvb_core.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/pci/netup_unidvb/netup_unidvb_core.c b/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
> index d85bfbb77a25..557985ba25db 100644
> --- a/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
> +++ b/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
> @@ -293,12 +293,13 @@ static int netup_unidvb_queue_setup(struct vb2_queue *vq,
> struct device *alloc_devs[])
> {
> struct netup_dma *dma = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev_dbg(&dma->ndev->pci_dev->dev, "%s()\n", __func__);
>
> *nplanes = 1;
> - if (vq->num_buffers + *nbuffers < VIDEO_MAX_FRAME)
> - *nbuffers = VIDEO_MAX_FRAME - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < VIDEO_MAX_FRAME)
> + *nbuffers = VIDEO_MAX_FRAME - q_num_bufs;
> sizes[0] = PAGE_ALIGN(NETUP_DMA_PACKETS_COUNT * 188);
> dev_dbg(&dma->ndev->pci_dev->dev, "%s() nbuffers=%d sizes[0]=%d\n",
> __func__, *nbuffers, sizes[0]);
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 24/56] media: pci: netup_unidvb: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:09 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:09 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Sergey Kozlov, Abylay Ospan
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Sergey Kozlov <serjk@netup.ru>
> CC: Abylay Ospan <aospan@netup.ru>
> ---
> drivers/media/pci/netup_unidvb/netup_unidvb_core.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/pci/netup_unidvb/netup_unidvb_core.c b/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
> index d85bfbb77a25..557985ba25db 100644
> --- a/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
> +++ b/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
> @@ -293,12 +293,13 @@ static int netup_unidvb_queue_setup(struct vb2_queue *vq,
> struct device *alloc_devs[])
> {
> struct netup_dma *dma = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev_dbg(&dma->ndev->pci_dev->dev, "%s()\n", __func__);
>
> *nplanes = 1;
> - if (vq->num_buffers + *nbuffers < VIDEO_MAX_FRAME)
> - *nbuffers = VIDEO_MAX_FRAME - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < VIDEO_MAX_FRAME)
> + *nbuffers = VIDEO_MAX_FRAME - q_num_bufs;
> sizes[0] = PAGE_ALIGN(NETUP_DMA_PACKETS_COUNT * 188);
> dev_dbg(&dma->ndev->pci_dev->dev, "%s() nbuffers=%d sizes[0]=%d\n",
> __func__, *nbuffers, sizes[0]);
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 24/56] media: pci: netup_unidvb: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:09 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:09 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Sergey Kozlov, Abylay Ospan
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Sergey Kozlov <serjk@netup.ru>
> CC: Abylay Ospan <aospan@netup.ru>
> ---
> drivers/media/pci/netup_unidvb/netup_unidvb_core.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/pci/netup_unidvb/netup_unidvb_core.c b/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
> index d85bfbb77a25..557985ba25db 100644
> --- a/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
> +++ b/drivers/media/pci/netup_unidvb/netup_unidvb_core.c
> @@ -293,12 +293,13 @@ static int netup_unidvb_queue_setup(struct vb2_queue *vq,
> struct device *alloc_devs[])
> {
> struct netup_dma *dma = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev_dbg(&dma->ndev->pci_dev->dev, "%s()\n", __func__);
>
> *nplanes = 1;
> - if (vq->num_buffers + *nbuffers < VIDEO_MAX_FRAME)
> - *nbuffers = VIDEO_MAX_FRAME - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < VIDEO_MAX_FRAME)
> + *nbuffers = VIDEO_MAX_FRAME - q_num_bufs;
> sizes[0] = PAGE_ALIGN(NETUP_DMA_PACKETS_COUNT * 188);
> dev_dbg(&dma->ndev->pci_dev->dev, "%s() nbuffers=%d sizes[0]=%d\n",
> __func__, *nbuffers, sizes[0]);
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
2023-11-09 9:30 ` Tomasz Figa
(?)
@ 2023-11-09 10:10 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 10:10 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 09/11/2023 à 10:30, Tomasz Figa a écrit :
> On Tue, Oct 31, 2023 at 05:31:02PM +0100, Benjamin Gaignard wrote:
>> VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
>> The number of buffers to delete in given by count field of
>> struct v4l2_delete_buffers and the range start at the index
>> specified in the same structure.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> .../userspace-api/media/v4l/user-func.rst | 1 +
>> .../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
>> .../media/v4l/vidioc-reqbufs.rst | 1 +
>> .../media/common/videobuf2/videobuf2-core.c | 30 +++++++
>> .../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
>> drivers/media/v4l2-core/v4l2-dev.c | 1 +
>> drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
>> include/media/v4l2-ioctl.h | 4 +
>> include/media/videobuf2-core.h | 12 +++
>> include/media/videobuf2-v4l2.h | 13 +++
>> include/uapi/linux/videodev2.h | 17 ++++
>> 11 files changed, 196 insertions(+)
>> create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>>
>> diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
>> index 15ff0bf7bbe6..3fd567695477 100644
>> --- a/Documentation/userspace-api/media/v4l/user-func.rst
>> +++ b/Documentation/userspace-api/media/v4l/user-func.rst
>> @@ -17,6 +17,7 @@ Function Reference
>> vidioc-dbg-g-chip-info
>> vidioc-dbg-g-register
>> vidioc-decoder-cmd
>> + vidioc-delete-bufs
>> vidioc-dqevent
>> vidioc-dv-timings-cap
>> vidioc-encoder-cmd
>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>> new file mode 100644
>> index 000000000000..4791df1395d6
>> --- /dev/null
>> +++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>> @@ -0,0 +1,80 @@
>> +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
>> +.. c:namespace:: V4L
>> +
>> +.. _VIDIOC_DELETE_BUFS:
>> +
>> +************************
>> +ioctl VIDIOC_DELETE_BUFS
>> +************************
>> +
>> +Name
>> +====
>> +
>> +VIDIOC_DELETE_BUFS - Deletes buffers from a queue
>> +Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
>> +capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
>> +are invoked.
>> +
>> +Synopsis
>> +========
>> +
>> +.. c:macro:: VIDIOC_DELETE_BUFs
>> +
>> +``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
>> +
>> +Arguments
>> +=========
>> +
>> +``fd``
>> + File descriptor returned by :c:func:`open()`.
>> +
>> +``argp``
>> + Pointer to struct :c:type:`v4l2_delete_buffers`.
>> +
>> +Description
>> +===========
>> +
>> +Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
>> +delete buffers from a queue.
>> +
>> +.. c:type:: v4l2_delete_buffers
>> +
>> +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
>> +
>> +.. flat-table:: struct v4l2_delete_buffers
>> + :header-rows: 0
>> + :stub-columns: 0
>> + :widths: 1 1 2
>> +
>> + * - __u32
>> + - ``index``
>> + - The starting buffer index to delete.
>> + * - __u32
>> + - ``count``
>> + - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
>> + All buffers in this range must be valid and in DEQUEUED state.
> I wonder if this wouldn't be an inconvenience for the userspace. Would
> there be anything wrong with allowing ranges with holes?
> (Agreed about the DEQUEUED part of course.)
For me a range as to be valid but the matter of taste.
>
>> + In error case errno is set to ``EINVAL`` error code and index returns the index of
>> + the invalid buffer.
>> + If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
> Hmm, do we care about index if count is zero?
No we don't I will change that.
>
>> + * - __u32
>> + - ``type``
>> + - Type of the stream or buffers, this is the same as the struct
>> + :c:type:`v4l2_format` ``type`` field. See
>> + :c:type:`v4l2_buf_type` for valid values.
>> + * - __u32
>> + - ``reserved``\ [13]
>> + - A place holder for future extensions. Drivers and applications
>> + must set the array to zero.
>> +
>> +Return Value
>> +============
>> +
>> +On success 0 is returned, on error -1 and the ``errno`` variable is set
>> +appropriately. The generic error codes are described at the
>> +:ref:`Generic Error Codes <gen-errors>` chapter.
>> +
>> +EBUSY
>> + File I/O is in progress.
>> +
>> +EINVAL
>> + The buffer ``index`` doesn't exist in the queue.
>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>> index 0b3a41a45d05..14d4a49c2945 100644
>> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>> @@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
>> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
>> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
>> .. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
>> +.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
>>
>> .. raw:: latex
>>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index 010a8bca0240..7068930a0ba6 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
>> }
>> EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
>>
>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
>> +{
>> + unsigned int i, ret = 0;
>> +
>> + if (start == 0 && count == 0)
> I guess related to the earlier comment, but why do we care about start
> being zero?
>
>> + return 0;
>> +
>> + mutex_lock(&q->mmap_lock);
>> +
>> + for (i = start; i < start + count && i < q->max_num_buffers; i++) {
>> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
>> +
>> + if (!vb) {
>> + ret = -EINVAL;
>> + goto unlock;
>> + }
>> + if (vb->state != VB2_BUF_STATE_DEQUEUED) {
>> + ret = -EINVAL;
>> + goto unlock;
>> + }
>> + }
>> + __vb2_queue_free(q, start, count);
>> + dprintk(q, 2, "buffers deleted\n");
>> +
>> +unlock:
>> + mutex_unlock(&q->mmap_lock);
>> + return ret;
>> +}
>> +EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
>> +
>> /*
>> * vb2_start_streaming() - Attempt to start streaming.
>> * @q: videobuf2 queue
>> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> index 56daf3b5b2ba..f003618efbc1 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> @@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
>> if (q->supports_requests)
>> *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
>> #endif
>> + if (q->supports_delete_bufs)
>> + *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
>> }
>>
>> static void validate_memory_flags(struct vb2_queue *q,
>> @@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
>> }
>> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
>>
>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
>> +{
>> + return vb2_core_delete_bufs(q, d->index, d->count);
>> +}
>> +EXPORT_SYMBOL_GPL(vb2_delete_bufs);
>> +
>> int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
>> {
>> unsigned requested_planes = 1;
>> @@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
>>
>> /* vb2 ioctl helpers */
>>
>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
>> + struct v4l2_delete_buffers *p)
>> +{
>> + struct video_device *vdev = video_devdata(file);
>> +
>> + if (vb2_queue_is_busy(vdev->queue, file))
>> + return -EBUSY;
>> +
>> + return vb2_delete_bufs(vdev->queue, p);
>> +}
>> +EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
>> +
>> int vb2_ioctl_reqbufs(struct file *file, void *priv,
>> struct v4l2_requestbuffers *p)
>> {
>> diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
>> index f81279492682..215654fd6581 100644
>> --- a/drivers/media/v4l2-core/v4l2-dev.c
>> +++ b/drivers/media/v4l2-core/v4l2-dev.c
>> @@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
>> SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
>> SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
>> SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
>> + SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
>> }
>>
>> if (is_vid || is_vbi || is_meta) {
>> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
>> index 4d90424cbfc4..e9dcf439f9f3 100644
>> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
>> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
>> @@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
>> v4l_print_format(&p->format, write_only);
>> }
>>
>> +static void v4l_print_delete_buffers(const void *arg, bool write_only)
>> +{
>> + const struct v4l2_delete_buffers *p = arg;
>> +
>> + pr_cont("index=%u, count=%u\n", p->index, p->count);
>> +}
>> +
>> static void v4l_print_streamparm(const void *arg, bool write_only)
>> {
>> const struct v4l2_streamparm *p = arg;
>> @@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
>> return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
>> }
>>
>> +static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
>> + struct file *file, void *fh, void *arg)
>> +{
>> + struct v4l2_delete_buffers *delete = arg;
>> + int ret = check_fmt(file, delete->type);
> Should we also have
>
> memset_after(delete, 0, type);
>
> here similar to how other ioctl handlers clear the reserved fields?
I will add it.
>
>> +
>> + return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
>> +}
>> +
>> static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
>> struct file *file, void *fh, void *arg)
>> {
>> @@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
>> IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
>> IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
>> IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
>> + IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
>> };
>> #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
>>
>> diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
>> index edb733f21604..55afbde54211 100644
>> --- a/include/media/v4l2-ioctl.h
>> +++ b/include/media/v4l2-ioctl.h
>> @@ -163,6 +163,8 @@ struct v4l2_fh;
>> * :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
>> * @vidioc_prepare_buf: pointer to the function that implements
>> * :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
>> + * @vidioc_delete_bufs: pointer to the function that implements
>> + * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
>> * @vidioc_overlay: pointer to the function that implements
>> * :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
>> * @vidioc_g_fbuf: pointer to the function that implements
>> @@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
>> struct v4l2_create_buffers *b);
>> int (*vidioc_prepare_buf)(struct file *file, void *fh,
>> struct v4l2_buffer *b);
>> + int (*vidioc_delete_bufs)(struct file *file, void *fh,
>> + struct v4l2_delete_buffers *d);
>>
>> int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
>> int (*vidioc_g_fbuf)(struct file *file, void *fh,
>> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
>> index 288477075a0e..db3bd986624e 100644
>> --- a/include/media/videobuf2-core.h
>> +++ b/include/media/videobuf2-core.h
>> @@ -507,6 +507,7 @@ struct vb2_buf_ops {
>> * @supports_requests: this queue supports the Request API.
>> * @requires_requests: this queue requires the Request API. If this is set to 1,
>> * then supports_requests must be set to 1 as well.
>> + * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
>> * @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
>> * time this is called. Set to 0 when the queue is canceled.
>> * If this is 1, then you cannot queue buffers from a request.
>> @@ -595,6 +596,7 @@ struct vb2_queue {
>> unsigned int quirk_poll_must_check_waiting_for_buffers:1;
>> unsigned int supports_requests:1;
>> unsigned int requires_requests:1;
>> + unsigned int supports_delete_bufs:1;
>> unsigned int uses_qbuf:1;
>> unsigned int uses_requests:1;
>> unsigned int allow_cache_hints:1;
>> @@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> */
>> int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>>
>> +/**
>> + * vb2_core_delete_bufs() -
>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
>> + * @start: first index of the range of buffers to delete.
>> + * @count: number of buffers to delete.
>> + *
>> + * Return: returns zero on success; an error code otherwise.
>> + */
>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
>> +
>> /**
>> * vb2_core_qbuf() - Queue a buffer from userspace
>> *
>> diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
>> index 5a845887850b..79cea8459f52 100644
>> --- a/include/media/videobuf2-v4l2.h
>> +++ b/include/media/videobuf2-v4l2.h
>> @@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
>> */
>> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
>> struct v4l2_buffer *b);
>> +/**
>> + * vb2_delete_bufs() - Delete buffers from the queue
>> + *
>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
>> + * @d: delete parameter, passed from userspace to
>> + * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
>> + *
>> + * The return values from this function are intended to be directly returned
>> + * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
>> + */
>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
>>
>> /**
>> * vb2_qbuf() - Queue a buffer from userspace
>> @@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
>> int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
>> int vb2_ioctl_expbuf(struct file *file, void *priv,
>> struct v4l2_exportbuffer *p);
>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
>> + struct v4l2_delete_buffers *p);
>>
>> /* struct v4l2_file_operations helpers */
>>
>> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
>> index 13ddb5abf584..96e105149906 100644
>> --- a/include/uapi/linux/videodev2.h
>> +++ b/include/uapi/linux/videodev2.h
>> @@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
>> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
>> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
>> #define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
>> +#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
>>
>> /**
>> * struct v4l2_plane - plane info for multi-planar buffers
>> @@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
>> __u32 reserved[5];
>> };
>>
>> +/**
>> + * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
>> + * @index: the first buffer to be deleted
>> + * @count: number of buffers to delete
>> + * @type: enum v4l2_buf_type
>> + * @reserved: future extensions
>> + */
>> +struct v4l2_delete_buffers {
>> + __u32 index;
>> + __u32 count;
>> + __u32 type;
>> + __u32 reserved[13];
>> +};
>> +
>> /*
>> * I O C T L C O D E S F O R V I D E O D E V I C E S
>> *
>> @@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
>> #define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
>>
>> #define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
>> +#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
>> +
>>
>> /* Reminder: when adding new ioctls please add support for them to
>> drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
> Do we also need to add support for the new ioctl in there?
It only use _u32, is aligned on cache boundary and doesn't use pointer.
For me 32 and 64 bits structures are identical so it doesn't need to be convert.
Maybe I'm wrong when testing it with pahole ?
>
> Best regards,
> Tomasz
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
@ 2023-11-09 10:10 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 10:10 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 09/11/2023 à 10:30, Tomasz Figa a écrit :
> On Tue, Oct 31, 2023 at 05:31:02PM +0100, Benjamin Gaignard wrote:
>> VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
>> The number of buffers to delete in given by count field of
>> struct v4l2_delete_buffers and the range start at the index
>> specified in the same structure.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> .../userspace-api/media/v4l/user-func.rst | 1 +
>> .../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
>> .../media/v4l/vidioc-reqbufs.rst | 1 +
>> .../media/common/videobuf2/videobuf2-core.c | 30 +++++++
>> .../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
>> drivers/media/v4l2-core/v4l2-dev.c | 1 +
>> drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
>> include/media/v4l2-ioctl.h | 4 +
>> include/media/videobuf2-core.h | 12 +++
>> include/media/videobuf2-v4l2.h | 13 +++
>> include/uapi/linux/videodev2.h | 17 ++++
>> 11 files changed, 196 insertions(+)
>> create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>>
>> diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
>> index 15ff0bf7bbe6..3fd567695477 100644
>> --- a/Documentation/userspace-api/media/v4l/user-func.rst
>> +++ b/Documentation/userspace-api/media/v4l/user-func.rst
>> @@ -17,6 +17,7 @@ Function Reference
>> vidioc-dbg-g-chip-info
>> vidioc-dbg-g-register
>> vidioc-decoder-cmd
>> + vidioc-delete-bufs
>> vidioc-dqevent
>> vidioc-dv-timings-cap
>> vidioc-encoder-cmd
>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>> new file mode 100644
>> index 000000000000..4791df1395d6
>> --- /dev/null
>> +++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>> @@ -0,0 +1,80 @@
>> +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
>> +.. c:namespace:: V4L
>> +
>> +.. _VIDIOC_DELETE_BUFS:
>> +
>> +************************
>> +ioctl VIDIOC_DELETE_BUFS
>> +************************
>> +
>> +Name
>> +====
>> +
>> +VIDIOC_DELETE_BUFS - Deletes buffers from a queue
>> +Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
>> +capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
>> +are invoked.
>> +
>> +Synopsis
>> +========
>> +
>> +.. c:macro:: VIDIOC_DELETE_BUFs
>> +
>> +``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
>> +
>> +Arguments
>> +=========
>> +
>> +``fd``
>> + File descriptor returned by :c:func:`open()`.
>> +
>> +``argp``
>> + Pointer to struct :c:type:`v4l2_delete_buffers`.
>> +
>> +Description
>> +===========
>> +
>> +Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
>> +delete buffers from a queue.
>> +
>> +.. c:type:: v4l2_delete_buffers
>> +
>> +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
>> +
>> +.. flat-table:: struct v4l2_delete_buffers
>> + :header-rows: 0
>> + :stub-columns: 0
>> + :widths: 1 1 2
>> +
>> + * - __u32
>> + - ``index``
>> + - The starting buffer index to delete.
>> + * - __u32
>> + - ``count``
>> + - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
>> + All buffers in this range must be valid and in DEQUEUED state.
> I wonder if this wouldn't be an inconvenience for the userspace. Would
> there be anything wrong with allowing ranges with holes?
> (Agreed about the DEQUEUED part of course.)
For me a range as to be valid but the matter of taste.
>
>> + In error case errno is set to ``EINVAL`` error code and index returns the index of
>> + the invalid buffer.
>> + If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
> Hmm, do we care about index if count is zero?
No we don't I will change that.
>
>> + * - __u32
>> + - ``type``
>> + - Type of the stream or buffers, this is the same as the struct
>> + :c:type:`v4l2_format` ``type`` field. See
>> + :c:type:`v4l2_buf_type` for valid values.
>> + * - __u32
>> + - ``reserved``\ [13]
>> + - A place holder for future extensions. Drivers and applications
>> + must set the array to zero.
>> +
>> +Return Value
>> +============
>> +
>> +On success 0 is returned, on error -1 and the ``errno`` variable is set
>> +appropriately. The generic error codes are described at the
>> +:ref:`Generic Error Codes <gen-errors>` chapter.
>> +
>> +EBUSY
>> + File I/O is in progress.
>> +
>> +EINVAL
>> + The buffer ``index`` doesn't exist in the queue.
>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>> index 0b3a41a45d05..14d4a49c2945 100644
>> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>> @@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
>> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
>> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
>> .. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
>> +.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
>>
>> .. raw:: latex
>>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index 010a8bca0240..7068930a0ba6 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
>> }
>> EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
>>
>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
>> +{
>> + unsigned int i, ret = 0;
>> +
>> + if (start == 0 && count == 0)
> I guess related to the earlier comment, but why do we care about start
> being zero?
>
>> + return 0;
>> +
>> + mutex_lock(&q->mmap_lock);
>> +
>> + for (i = start; i < start + count && i < q->max_num_buffers; i++) {
>> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
>> +
>> + if (!vb) {
>> + ret = -EINVAL;
>> + goto unlock;
>> + }
>> + if (vb->state != VB2_BUF_STATE_DEQUEUED) {
>> + ret = -EINVAL;
>> + goto unlock;
>> + }
>> + }
>> + __vb2_queue_free(q, start, count);
>> + dprintk(q, 2, "buffers deleted\n");
>> +
>> +unlock:
>> + mutex_unlock(&q->mmap_lock);
>> + return ret;
>> +}
>> +EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
>> +
>> /*
>> * vb2_start_streaming() - Attempt to start streaming.
>> * @q: videobuf2 queue
>> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> index 56daf3b5b2ba..f003618efbc1 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> @@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
>> if (q->supports_requests)
>> *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
>> #endif
>> + if (q->supports_delete_bufs)
>> + *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
>> }
>>
>> static void validate_memory_flags(struct vb2_queue *q,
>> @@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
>> }
>> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
>>
>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
>> +{
>> + return vb2_core_delete_bufs(q, d->index, d->count);
>> +}
>> +EXPORT_SYMBOL_GPL(vb2_delete_bufs);
>> +
>> int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
>> {
>> unsigned requested_planes = 1;
>> @@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
>>
>> /* vb2 ioctl helpers */
>>
>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
>> + struct v4l2_delete_buffers *p)
>> +{
>> + struct video_device *vdev = video_devdata(file);
>> +
>> + if (vb2_queue_is_busy(vdev->queue, file))
>> + return -EBUSY;
>> +
>> + return vb2_delete_bufs(vdev->queue, p);
>> +}
>> +EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
>> +
>> int vb2_ioctl_reqbufs(struct file *file, void *priv,
>> struct v4l2_requestbuffers *p)
>> {
>> diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
>> index f81279492682..215654fd6581 100644
>> --- a/drivers/media/v4l2-core/v4l2-dev.c
>> +++ b/drivers/media/v4l2-core/v4l2-dev.c
>> @@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
>> SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
>> SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
>> SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
>> + SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
>> }
>>
>> if (is_vid || is_vbi || is_meta) {
>> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
>> index 4d90424cbfc4..e9dcf439f9f3 100644
>> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
>> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
>> @@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
>> v4l_print_format(&p->format, write_only);
>> }
>>
>> +static void v4l_print_delete_buffers(const void *arg, bool write_only)
>> +{
>> + const struct v4l2_delete_buffers *p = arg;
>> +
>> + pr_cont("index=%u, count=%u\n", p->index, p->count);
>> +}
>> +
>> static void v4l_print_streamparm(const void *arg, bool write_only)
>> {
>> const struct v4l2_streamparm *p = arg;
>> @@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
>> return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
>> }
>>
>> +static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
>> + struct file *file, void *fh, void *arg)
>> +{
>> + struct v4l2_delete_buffers *delete = arg;
>> + int ret = check_fmt(file, delete->type);
> Should we also have
>
> memset_after(delete, 0, type);
>
> here similar to how other ioctl handlers clear the reserved fields?
I will add it.
>
>> +
>> + return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
>> +}
>> +
>> static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
>> struct file *file, void *fh, void *arg)
>> {
>> @@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
>> IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
>> IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
>> IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
>> + IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
>> };
>> #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
>>
>> diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
>> index edb733f21604..55afbde54211 100644
>> --- a/include/media/v4l2-ioctl.h
>> +++ b/include/media/v4l2-ioctl.h
>> @@ -163,6 +163,8 @@ struct v4l2_fh;
>> * :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
>> * @vidioc_prepare_buf: pointer to the function that implements
>> * :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
>> + * @vidioc_delete_bufs: pointer to the function that implements
>> + * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
>> * @vidioc_overlay: pointer to the function that implements
>> * :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
>> * @vidioc_g_fbuf: pointer to the function that implements
>> @@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
>> struct v4l2_create_buffers *b);
>> int (*vidioc_prepare_buf)(struct file *file, void *fh,
>> struct v4l2_buffer *b);
>> + int (*vidioc_delete_bufs)(struct file *file, void *fh,
>> + struct v4l2_delete_buffers *d);
>>
>> int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
>> int (*vidioc_g_fbuf)(struct file *file, void *fh,
>> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
>> index 288477075a0e..db3bd986624e 100644
>> --- a/include/media/videobuf2-core.h
>> +++ b/include/media/videobuf2-core.h
>> @@ -507,6 +507,7 @@ struct vb2_buf_ops {
>> * @supports_requests: this queue supports the Request API.
>> * @requires_requests: this queue requires the Request API. If this is set to 1,
>> * then supports_requests must be set to 1 as well.
>> + * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
>> * @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
>> * time this is called. Set to 0 when the queue is canceled.
>> * If this is 1, then you cannot queue buffers from a request.
>> @@ -595,6 +596,7 @@ struct vb2_queue {
>> unsigned int quirk_poll_must_check_waiting_for_buffers:1;
>> unsigned int supports_requests:1;
>> unsigned int requires_requests:1;
>> + unsigned int supports_delete_bufs:1;
>> unsigned int uses_qbuf:1;
>> unsigned int uses_requests:1;
>> unsigned int allow_cache_hints:1;
>> @@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> */
>> int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>>
>> +/**
>> + * vb2_core_delete_bufs() -
>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
>> + * @start: first index of the range of buffers to delete.
>> + * @count: number of buffers to delete.
>> + *
>> + * Return: returns zero on success; an error code otherwise.
>> + */
>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
>> +
>> /**
>> * vb2_core_qbuf() - Queue a buffer from userspace
>> *
>> diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
>> index 5a845887850b..79cea8459f52 100644
>> --- a/include/media/videobuf2-v4l2.h
>> +++ b/include/media/videobuf2-v4l2.h
>> @@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
>> */
>> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
>> struct v4l2_buffer *b);
>> +/**
>> + * vb2_delete_bufs() - Delete buffers from the queue
>> + *
>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
>> + * @d: delete parameter, passed from userspace to
>> + * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
>> + *
>> + * The return values from this function are intended to be directly returned
>> + * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
>> + */
>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
>>
>> /**
>> * vb2_qbuf() - Queue a buffer from userspace
>> @@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
>> int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
>> int vb2_ioctl_expbuf(struct file *file, void *priv,
>> struct v4l2_exportbuffer *p);
>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
>> + struct v4l2_delete_buffers *p);
>>
>> /* struct v4l2_file_operations helpers */
>>
>> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
>> index 13ddb5abf584..96e105149906 100644
>> --- a/include/uapi/linux/videodev2.h
>> +++ b/include/uapi/linux/videodev2.h
>> @@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
>> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
>> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
>> #define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
>> +#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
>>
>> /**
>> * struct v4l2_plane - plane info for multi-planar buffers
>> @@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
>> __u32 reserved[5];
>> };
>>
>> +/**
>> + * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
>> + * @index: the first buffer to be deleted
>> + * @count: number of buffers to delete
>> + * @type: enum v4l2_buf_type
>> + * @reserved: future extensions
>> + */
>> +struct v4l2_delete_buffers {
>> + __u32 index;
>> + __u32 count;
>> + __u32 type;
>> + __u32 reserved[13];
>> +};
>> +
>> /*
>> * I O C T L C O D E S F O R V I D E O D E V I C E S
>> *
>> @@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
>> #define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
>>
>> #define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
>> +#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
>> +
>>
>> /* Reminder: when adding new ioctls please add support for them to
>> drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
> Do we also need to add support for the new ioctl in there?
It only use _u32, is aligned on cache boundary and doesn't use pointer.
For me 32 and 64 bits structures are identical so it doesn't need to be convert.
Maybe I'm wrong when testing it with pahole ?
>
> Best regards,
> Tomasz
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
@ 2023-11-09 10:10 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 10:10 UTC (permalink / raw)
To: Tomasz Figa
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
Le 09/11/2023 à 10:30, Tomasz Figa a écrit :
> On Tue, Oct 31, 2023 at 05:31:02PM +0100, Benjamin Gaignard wrote:
>> VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
>> The number of buffers to delete in given by count field of
>> struct v4l2_delete_buffers and the range start at the index
>> specified in the same structure.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> .../userspace-api/media/v4l/user-func.rst | 1 +
>> .../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
>> .../media/v4l/vidioc-reqbufs.rst | 1 +
>> .../media/common/videobuf2/videobuf2-core.c | 30 +++++++
>> .../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
>> drivers/media/v4l2-core/v4l2-dev.c | 1 +
>> drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
>> include/media/v4l2-ioctl.h | 4 +
>> include/media/videobuf2-core.h | 12 +++
>> include/media/videobuf2-v4l2.h | 13 +++
>> include/uapi/linux/videodev2.h | 17 ++++
>> 11 files changed, 196 insertions(+)
>> create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>>
>> diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
>> index 15ff0bf7bbe6..3fd567695477 100644
>> --- a/Documentation/userspace-api/media/v4l/user-func.rst
>> +++ b/Documentation/userspace-api/media/v4l/user-func.rst
>> @@ -17,6 +17,7 @@ Function Reference
>> vidioc-dbg-g-chip-info
>> vidioc-dbg-g-register
>> vidioc-decoder-cmd
>> + vidioc-delete-bufs
>> vidioc-dqevent
>> vidioc-dv-timings-cap
>> vidioc-encoder-cmd
>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>> new file mode 100644
>> index 000000000000..4791df1395d6
>> --- /dev/null
>> +++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>> @@ -0,0 +1,80 @@
>> +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
>> +.. c:namespace:: V4L
>> +
>> +.. _VIDIOC_DELETE_BUFS:
>> +
>> +************************
>> +ioctl VIDIOC_DELETE_BUFS
>> +************************
>> +
>> +Name
>> +====
>> +
>> +VIDIOC_DELETE_BUFS - Deletes buffers from a queue
>> +Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
>> +capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
>> +are invoked.
>> +
>> +Synopsis
>> +========
>> +
>> +.. c:macro:: VIDIOC_DELETE_BUFs
>> +
>> +``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
>> +
>> +Arguments
>> +=========
>> +
>> +``fd``
>> + File descriptor returned by :c:func:`open()`.
>> +
>> +``argp``
>> + Pointer to struct :c:type:`v4l2_delete_buffers`.
>> +
>> +Description
>> +===========
>> +
>> +Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
>> +delete buffers from a queue.
>> +
>> +.. c:type:: v4l2_delete_buffers
>> +
>> +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
>> +
>> +.. flat-table:: struct v4l2_delete_buffers
>> + :header-rows: 0
>> + :stub-columns: 0
>> + :widths: 1 1 2
>> +
>> + * - __u32
>> + - ``index``
>> + - The starting buffer index to delete.
>> + * - __u32
>> + - ``count``
>> + - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
>> + All buffers in this range must be valid and in DEQUEUED state.
> I wonder if this wouldn't be an inconvenience for the userspace. Would
> there be anything wrong with allowing ranges with holes?
> (Agreed about the DEQUEUED part of course.)
For me a range as to be valid but the matter of taste.
>
>> + In error case errno is set to ``EINVAL`` error code and index returns the index of
>> + the invalid buffer.
>> + If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
> Hmm, do we care about index if count is zero?
No we don't I will change that.
>
>> + * - __u32
>> + - ``type``
>> + - Type of the stream or buffers, this is the same as the struct
>> + :c:type:`v4l2_format` ``type`` field. See
>> + :c:type:`v4l2_buf_type` for valid values.
>> + * - __u32
>> + - ``reserved``\ [13]
>> + - A place holder for future extensions. Drivers and applications
>> + must set the array to zero.
>> +
>> +Return Value
>> +============
>> +
>> +On success 0 is returned, on error -1 and the ``errno`` variable is set
>> +appropriately. The generic error codes are described at the
>> +:ref:`Generic Error Codes <gen-errors>` chapter.
>> +
>> +EBUSY
>> + File I/O is in progress.
>> +
>> +EINVAL
>> + The buffer ``index`` doesn't exist in the queue.
>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>> index 0b3a41a45d05..14d4a49c2945 100644
>> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>> @@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
>> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
>> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
>> .. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
>> +.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
>>
>> .. raw:: latex
>>
>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>> index 010a8bca0240..7068930a0ba6 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>> @@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
>> }
>> EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
>>
>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
>> +{
>> + unsigned int i, ret = 0;
>> +
>> + if (start == 0 && count == 0)
> I guess related to the earlier comment, but why do we care about start
> being zero?
>
>> + return 0;
>> +
>> + mutex_lock(&q->mmap_lock);
>> +
>> + for (i = start; i < start + count && i < q->max_num_buffers; i++) {
>> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
>> +
>> + if (!vb) {
>> + ret = -EINVAL;
>> + goto unlock;
>> + }
>> + if (vb->state != VB2_BUF_STATE_DEQUEUED) {
>> + ret = -EINVAL;
>> + goto unlock;
>> + }
>> + }
>> + __vb2_queue_free(q, start, count);
>> + dprintk(q, 2, "buffers deleted\n");
>> +
>> +unlock:
>> + mutex_unlock(&q->mmap_lock);
>> + return ret;
>> +}
>> +EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
>> +
>> /*
>> * vb2_start_streaming() - Attempt to start streaming.
>> * @q: videobuf2 queue
>> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> index 56daf3b5b2ba..f003618efbc1 100644
>> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>> @@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
>> if (q->supports_requests)
>> *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
>> #endif
>> + if (q->supports_delete_bufs)
>> + *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
>> }
>>
>> static void validate_memory_flags(struct vb2_queue *q,
>> @@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
>> }
>> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
>>
>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
>> +{
>> + return vb2_core_delete_bufs(q, d->index, d->count);
>> +}
>> +EXPORT_SYMBOL_GPL(vb2_delete_bufs);
>> +
>> int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
>> {
>> unsigned requested_planes = 1;
>> @@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
>>
>> /* vb2 ioctl helpers */
>>
>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
>> + struct v4l2_delete_buffers *p)
>> +{
>> + struct video_device *vdev = video_devdata(file);
>> +
>> + if (vb2_queue_is_busy(vdev->queue, file))
>> + return -EBUSY;
>> +
>> + return vb2_delete_bufs(vdev->queue, p);
>> +}
>> +EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
>> +
>> int vb2_ioctl_reqbufs(struct file *file, void *priv,
>> struct v4l2_requestbuffers *p)
>> {
>> diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
>> index f81279492682..215654fd6581 100644
>> --- a/drivers/media/v4l2-core/v4l2-dev.c
>> +++ b/drivers/media/v4l2-core/v4l2-dev.c
>> @@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
>> SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
>> SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
>> SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
>> + SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
>> }
>>
>> if (is_vid || is_vbi || is_meta) {
>> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
>> index 4d90424cbfc4..e9dcf439f9f3 100644
>> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
>> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
>> @@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
>> v4l_print_format(&p->format, write_only);
>> }
>>
>> +static void v4l_print_delete_buffers(const void *arg, bool write_only)
>> +{
>> + const struct v4l2_delete_buffers *p = arg;
>> +
>> + pr_cont("index=%u, count=%u\n", p->index, p->count);
>> +}
>> +
>> static void v4l_print_streamparm(const void *arg, bool write_only)
>> {
>> const struct v4l2_streamparm *p = arg;
>> @@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
>> return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
>> }
>>
>> +static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
>> + struct file *file, void *fh, void *arg)
>> +{
>> + struct v4l2_delete_buffers *delete = arg;
>> + int ret = check_fmt(file, delete->type);
> Should we also have
>
> memset_after(delete, 0, type);
>
> here similar to how other ioctl handlers clear the reserved fields?
I will add it.
>
>> +
>> + return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
>> +}
>> +
>> static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
>> struct file *file, void *fh, void *arg)
>> {
>> @@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
>> IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
>> IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
>> IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
>> + IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
>> };
>> #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
>>
>> diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
>> index edb733f21604..55afbde54211 100644
>> --- a/include/media/v4l2-ioctl.h
>> +++ b/include/media/v4l2-ioctl.h
>> @@ -163,6 +163,8 @@ struct v4l2_fh;
>> * :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
>> * @vidioc_prepare_buf: pointer to the function that implements
>> * :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
>> + * @vidioc_delete_bufs: pointer to the function that implements
>> + * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
>> * @vidioc_overlay: pointer to the function that implements
>> * :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
>> * @vidioc_g_fbuf: pointer to the function that implements
>> @@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
>> struct v4l2_create_buffers *b);
>> int (*vidioc_prepare_buf)(struct file *file, void *fh,
>> struct v4l2_buffer *b);
>> + int (*vidioc_delete_bufs)(struct file *file, void *fh,
>> + struct v4l2_delete_buffers *d);
>>
>> int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
>> int (*vidioc_g_fbuf)(struct file *file, void *fh,
>> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
>> index 288477075a0e..db3bd986624e 100644
>> --- a/include/media/videobuf2-core.h
>> +++ b/include/media/videobuf2-core.h
>> @@ -507,6 +507,7 @@ struct vb2_buf_ops {
>> * @supports_requests: this queue supports the Request API.
>> * @requires_requests: this queue requires the Request API. If this is set to 1,
>> * then supports_requests must be set to 1 as well.
>> + * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
>> * @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
>> * time this is called. Set to 0 when the queue is canceled.
>> * If this is 1, then you cannot queue buffers from a request.
>> @@ -595,6 +596,7 @@ struct vb2_queue {
>> unsigned int quirk_poll_must_check_waiting_for_buffers:1;
>> unsigned int supports_requests:1;
>> unsigned int requires_requests:1;
>> + unsigned int supports_delete_bufs:1;
>> unsigned int uses_qbuf:1;
>> unsigned int uses_requests:1;
>> unsigned int allow_cache_hints:1;
>> @@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>> */
>> int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>>
>> +/**
>> + * vb2_core_delete_bufs() -
>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
>> + * @start: first index of the range of buffers to delete.
>> + * @count: number of buffers to delete.
>> + *
>> + * Return: returns zero on success; an error code otherwise.
>> + */
>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
>> +
>> /**
>> * vb2_core_qbuf() - Queue a buffer from userspace
>> *
>> diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
>> index 5a845887850b..79cea8459f52 100644
>> --- a/include/media/videobuf2-v4l2.h
>> +++ b/include/media/videobuf2-v4l2.h
>> @@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
>> */
>> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
>> struct v4l2_buffer *b);
>> +/**
>> + * vb2_delete_bufs() - Delete buffers from the queue
>> + *
>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
>> + * @d: delete parameter, passed from userspace to
>> + * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
>> + *
>> + * The return values from this function are intended to be directly returned
>> + * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
>> + */
>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
>>
>> /**
>> * vb2_qbuf() - Queue a buffer from userspace
>> @@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
>> int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
>> int vb2_ioctl_expbuf(struct file *file, void *priv,
>> struct v4l2_exportbuffer *p);
>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
>> + struct v4l2_delete_buffers *p);
>>
>> /* struct v4l2_file_operations helpers */
>>
>> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
>> index 13ddb5abf584..96e105149906 100644
>> --- a/include/uapi/linux/videodev2.h
>> +++ b/include/uapi/linux/videodev2.h
>> @@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
>> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
>> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
>> #define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
>> +#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
>>
>> /**
>> * struct v4l2_plane - plane info for multi-planar buffers
>> @@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
>> __u32 reserved[5];
>> };
>>
>> +/**
>> + * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
>> + * @index: the first buffer to be deleted
>> + * @count: number of buffers to delete
>> + * @type: enum v4l2_buf_type
>> + * @reserved: future extensions
>> + */
>> +struct v4l2_delete_buffers {
>> + __u32 index;
>> + __u32 count;
>> + __u32 type;
>> + __u32 reserved[13];
>> +};
>> +
>> /*
>> * I O C T L C O D E S F O R V I D E O D E V I C E S
>> *
>> @@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
>> #define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
>>
>> #define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
>> +#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
>> +
>>
>> /* Reminder: when adding new ioctls please add support for them to
>> drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
> Do we also need to add support for the new ioctl in there?
It only use _u32, is aligned on cache boundary and doesn't use pointer.
For me 32 and 64 bits structures are identical so it doesn't need to be convert.
Maybe I'm wrong when testing it with pahole ?
>
> Best regards,
> Tomasz
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 25/56] media: pci: tw68: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 10:13 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:13 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Fabrizio Castro
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> CC: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
> ---
> drivers/media/pci/tw68/tw68-video.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/pci/tw68/tw68-video.c b/drivers/media/pci/tw68/tw68-video.c
> index 773a18702d36..35296c226019 100644
> --- a/drivers/media/pci/tw68/tw68-video.c
> +++ b/drivers/media/pci/tw68/tw68-video.c
> @@ -360,13 +360,13 @@ static int tw68_queue_setup(struct vb2_queue *q,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct tw68_dev *dev = vb2_get_drv_priv(q);
Why not
unsigned int q_num_bufs = vb2_get_num_buffers(vq);
just like in other patches in the series?
Regards,
Andrzej
> - unsigned tot_bufs = q->num_buffers + *num_buffers;
> + unsigned tot_bufs = vb2_get_num_buffers(q) + *num_buffers;
> unsigned size = (dev->fmt->depth * dev->width * dev->height) >> 3;
>
> if (tot_bufs < 2)
> tot_bufs = 2;
> tot_bufs = tw68_buffer_count(size, tot_bufs);
> - *num_buffers = tot_bufs - q->num_buffers;
> + *num_buffers = tot_bufs - vb2_get_num_buffers(q);
> /*
> * We allow create_bufs, but only if the sizeimage is >= as the
> * current sizeimage. The tw68_buffer_count calculation becomes quite
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 25/56] media: pci: tw68: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:13 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:13 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Fabrizio Castro
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> CC: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
> ---
> drivers/media/pci/tw68/tw68-video.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/pci/tw68/tw68-video.c b/drivers/media/pci/tw68/tw68-video.c
> index 773a18702d36..35296c226019 100644
> --- a/drivers/media/pci/tw68/tw68-video.c
> +++ b/drivers/media/pci/tw68/tw68-video.c
> @@ -360,13 +360,13 @@ static int tw68_queue_setup(struct vb2_queue *q,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct tw68_dev *dev = vb2_get_drv_priv(q);
Why not
unsigned int q_num_bufs = vb2_get_num_buffers(vq);
just like in other patches in the series?
Regards,
Andrzej
> - unsigned tot_bufs = q->num_buffers + *num_buffers;
> + unsigned tot_bufs = vb2_get_num_buffers(q) + *num_buffers;
> unsigned size = (dev->fmt->depth * dev->width * dev->height) >> 3;
>
> if (tot_bufs < 2)
> tot_bufs = 2;
> tot_bufs = tw68_buffer_count(size, tot_bufs);
> - *num_buffers = tot_bufs - q->num_buffers;
> + *num_buffers = tot_bufs - vb2_get_num_buffers(q);
> /*
> * We allow create_bufs, but only if the sizeimage is >= as the
> * current sizeimage. The tw68_buffer_count calculation becomes quite
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 25/56] media: pci: tw68: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:13 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:13 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Fabrizio Castro
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> CC: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
> ---
> drivers/media/pci/tw68/tw68-video.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/pci/tw68/tw68-video.c b/drivers/media/pci/tw68/tw68-video.c
> index 773a18702d36..35296c226019 100644
> --- a/drivers/media/pci/tw68/tw68-video.c
> +++ b/drivers/media/pci/tw68/tw68-video.c
> @@ -360,13 +360,13 @@ static int tw68_queue_setup(struct vb2_queue *q,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct tw68_dev *dev = vb2_get_drv_priv(q);
Why not
unsigned int q_num_bufs = vb2_get_num_buffers(vq);
just like in other patches in the series?
Regards,
Andrzej
> - unsigned tot_bufs = q->num_buffers + *num_buffers;
> + unsigned tot_bufs = vb2_get_num_buffers(q) + *num_buffers;
> unsigned size = (dev->fmt->depth * dev->width * dev->height) >> 3;
>
> if (tot_bufs < 2)
> tot_bufs = 2;
> tot_bufs = tw68_buffer_count(size, tot_bufs);
> - *num_buffers = tot_bufs - q->num_buffers;
> + *num_buffers = tot_bufs - vb2_get_num_buffers(q);
> /*
> * We allow create_bufs, but only if the sizeimage is >= as the
> * current sizeimage. The tw68_buffer_count calculation becomes quite
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 19/56] media: dvb-core: Do not initialize twice queue num_buffer field
2023-11-09 9:50 ` Andrzej Pietrasiewicz
(?)
@ 2023-11-09 10:14 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 10:14 UTC (permalink / raw)
To: Andrzej Pietrasiewicz, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Le 09/11/2023 à 10:50, Andrzej Pietrasiewicz a écrit :
> Hi Benjamin,
>
> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
>> The above memset already zeroed all the ctx fields, it is useless
>> to do it here again.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> drivers/media/dvb-core/dvb_vb2.c | 1 -
>> 1 file changed, 1 deletion(-)
>>
>> diff --git a/drivers/media/dvb-core/dvb_vb2.c
>> b/drivers/media/dvb-core/dvb_vb2.c
>> index 3a966fdf814c..a731b755a0b9 100644
>> --- a/drivers/media/dvb-core/dvb_vb2.c
>> +++ b/drivers/media/dvb-core/dvb_vb2.c
>> @@ -177,7 +177,6 @@ int dvb_vb2_init(struct dvb_vb2_ctx *ctx, const
>> char *name, int nonblocking)
>> q->ops = &dvb_vb2_qops;
>> q->mem_ops = &vb2_vmalloc_memops;
>> q->buf_ops = &dvb_vb2_buf_ops;
>> - q->num_buffers = 0;
>
> A few lines above this one is this:
>
> q->is_output = 0;
>
> Can this also be included in this (cleanup) patch?
Nice catch, I will add it.
Thanks,
Benjamin
>
> Regards,
>
> Andrzej
>
>> ret = vb2_core_queue_init(q);
>> if (ret) {
>> ctx->state = DVB_VB2_STATE_NONE;
>
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 19/56] media: dvb-core: Do not initialize twice queue num_buffer field
@ 2023-11-09 10:14 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 10:14 UTC (permalink / raw)
To: Andrzej Pietrasiewicz, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Le 09/11/2023 à 10:50, Andrzej Pietrasiewicz a écrit :
> Hi Benjamin,
>
> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
>> The above memset already zeroed all the ctx fields, it is useless
>> to do it here again.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> drivers/media/dvb-core/dvb_vb2.c | 1 -
>> 1 file changed, 1 deletion(-)
>>
>> diff --git a/drivers/media/dvb-core/dvb_vb2.c
>> b/drivers/media/dvb-core/dvb_vb2.c
>> index 3a966fdf814c..a731b755a0b9 100644
>> --- a/drivers/media/dvb-core/dvb_vb2.c
>> +++ b/drivers/media/dvb-core/dvb_vb2.c
>> @@ -177,7 +177,6 @@ int dvb_vb2_init(struct dvb_vb2_ctx *ctx, const
>> char *name, int nonblocking)
>> q->ops = &dvb_vb2_qops;
>> q->mem_ops = &vb2_vmalloc_memops;
>> q->buf_ops = &dvb_vb2_buf_ops;
>> - q->num_buffers = 0;
>
> A few lines above this one is this:
>
> q->is_output = 0;
>
> Can this also be included in this (cleanup) patch?
Nice catch, I will add it.
Thanks,
Benjamin
>
> Regards,
>
> Andrzej
>
>> ret = vb2_core_queue_init(q);
>> if (ret) {
>> ctx->state = DVB_VB2_STATE_NONE;
>
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 19/56] media: dvb-core: Do not initialize twice queue num_buffer field
@ 2023-11-09 10:14 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 10:14 UTC (permalink / raw)
To: Andrzej Pietrasiewicz, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Le 09/11/2023 à 10:50, Andrzej Pietrasiewicz a écrit :
> Hi Benjamin,
>
> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
>> The above memset already zeroed all the ctx fields, it is useless
>> to do it here again.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> ---
>> drivers/media/dvb-core/dvb_vb2.c | 1 -
>> 1 file changed, 1 deletion(-)
>>
>> diff --git a/drivers/media/dvb-core/dvb_vb2.c
>> b/drivers/media/dvb-core/dvb_vb2.c
>> index 3a966fdf814c..a731b755a0b9 100644
>> --- a/drivers/media/dvb-core/dvb_vb2.c
>> +++ b/drivers/media/dvb-core/dvb_vb2.c
>> @@ -177,7 +177,6 @@ int dvb_vb2_init(struct dvb_vb2_ctx *ctx, const
>> char *name, int nonblocking)
>> q->ops = &dvb_vb2_qops;
>> q->mem_ops = &vb2_vmalloc_memops;
>> q->buf_ops = &dvb_vb2_buf_ops;
>> - q->num_buffers = 0;
>
> A few lines above this one is this:
>
> q->is_output = 0;
>
> Can this also be included in this (cleanup) patch?
Nice catch, I will add it.
Thanks,
Benjamin
>
> Regards,
>
> Andrzej
>
>> ret = vb2_core_queue_init(q);
>> if (ret) {
>> ctx->state = DVB_VB2_STATE_NONE;
>
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 26/56] media: i2c: video-i2c: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 10:18 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:18 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Matt Ranostay
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> CC: Matt Ranostay <matt.ranostay@konsulko.com>
> ---
> drivers/media/i2c/video-i2c.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/i2c/video-i2c.c b/drivers/media/i2c/video-i2c.c
> index 178bd06cc2ed..ebf2ac98a068 100644
> --- a/drivers/media/i2c/video-i2c.c
> +++ b/drivers/media/i2c/video-i2c.c
> @@ -405,9 +405,10 @@ static int queue_setup(struct vb2_queue *vq,
> {
> struct video_i2c_data *data = vb2_get_drv_priv(vq);
> unsigned int size = data->chip->buffer_size;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2;
> + if (q_num_bufs + *nbuffers < 2)
> + *nbuffers = 2 - q_num_bufs;
This actually changes the logic. Maybe it has already been discussed and
the result of that discussion is this change in logic? Looking at other
drivers *nbuffers = 2 - q_num_bufs; seems the right thing to do.
But then at least the commit message body IMO should mention this change.
Or, preferably, the change in logic should be a separate patch to be applied
before this one.
Regards,
Andrzej
>
> if (*nplanes)
> return sizes[0] < size ? -EINVAL : 0;
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 26/56] media: i2c: video-i2c: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:18 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:18 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Matt Ranostay
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> CC: Matt Ranostay <matt.ranostay@konsulko.com>
> ---
> drivers/media/i2c/video-i2c.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/i2c/video-i2c.c b/drivers/media/i2c/video-i2c.c
> index 178bd06cc2ed..ebf2ac98a068 100644
> --- a/drivers/media/i2c/video-i2c.c
> +++ b/drivers/media/i2c/video-i2c.c
> @@ -405,9 +405,10 @@ static int queue_setup(struct vb2_queue *vq,
> {
> struct video_i2c_data *data = vb2_get_drv_priv(vq);
> unsigned int size = data->chip->buffer_size;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2;
> + if (q_num_bufs + *nbuffers < 2)
> + *nbuffers = 2 - q_num_bufs;
This actually changes the logic. Maybe it has already been discussed and
the result of that discussion is this change in logic? Looking at other
drivers *nbuffers = 2 - q_num_bufs; seems the right thing to do.
But then at least the commit message body IMO should mention this change.
Or, preferably, the change in logic should be a separate patch to be applied
before this one.
Regards,
Andrzej
>
> if (*nplanes)
> return sizes[0] < size ? -EINVAL : 0;
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 26/56] media: i2c: video-i2c: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:18 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:18 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Matt Ranostay
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> CC: Matt Ranostay <matt.ranostay@konsulko.com>
> ---
> drivers/media/i2c/video-i2c.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/i2c/video-i2c.c b/drivers/media/i2c/video-i2c.c
> index 178bd06cc2ed..ebf2ac98a068 100644
> --- a/drivers/media/i2c/video-i2c.c
> +++ b/drivers/media/i2c/video-i2c.c
> @@ -405,9 +405,10 @@ static int queue_setup(struct vb2_queue *vq,
> {
> struct video_i2c_data *data = vb2_get_drv_priv(vq);
> unsigned int size = data->chip->buffer_size;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2;
> + if (q_num_bufs + *nbuffers < 2)
> + *nbuffers = 2 - q_num_bufs;
This actually changes the logic. Maybe it has already been discussed and
the result of that discussion is this change in logic? Looking at other
drivers *nbuffers = 2 - q_num_bufs; seems the right thing to do.
But then at least the commit message body IMO should mention this change.
Or, preferably, the change in logic should be a separate patch to be applied
before this one.
Regards,
Andrzej
>
> if (*nplanes)
> return sizes[0] < size ? -EINVAL : 0;
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 27/56] media: coda: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 10:22 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:22 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> drivers/media/platform/chips-media/coda-common.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/chips-media/coda-common.c b/drivers/media/platform/chips-media/coda-common.c
> index cc4892129aaf..f1d85758f6dd 100644
> --- a/drivers/media/platform/chips-media/coda-common.c
> +++ b/drivers/media/platform/chips-media/coda-common.c
> @@ -794,7 +794,7 @@ static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f,
>
> if (vb2_is_busy(vq)) {
> v4l2_err(&ctx->dev->v4l2_dev, "%s: %s queue busy: %d\n",
> - __func__, v4l2_type_names[f->type], vq->num_buffers);
> + __func__, v4l2_type_names[f->type], vb2_get_num_buffers(vq));
> return -EBUSY;
> }
>
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 27/56] media: coda: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:22 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:22 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> drivers/media/platform/chips-media/coda-common.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/chips-media/coda-common.c b/drivers/media/platform/chips-media/coda-common.c
> index cc4892129aaf..f1d85758f6dd 100644
> --- a/drivers/media/platform/chips-media/coda-common.c
> +++ b/drivers/media/platform/chips-media/coda-common.c
> @@ -794,7 +794,7 @@ static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f,
>
> if (vb2_is_busy(vq)) {
> v4l2_err(&ctx->dev->v4l2_dev, "%s: %s queue busy: %d\n",
> - __func__, v4l2_type_names[f->type], vq->num_buffers);
> + __func__, v4l2_type_names[f->type], vb2_get_num_buffers(vq));
> return -EBUSY;
> }
>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 27/56] media: coda: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:22 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:22 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> drivers/media/platform/chips-media/coda-common.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/chips-media/coda-common.c b/drivers/media/platform/chips-media/coda-common.c
> index cc4892129aaf..f1d85758f6dd 100644
> --- a/drivers/media/platform/chips-media/coda-common.c
> +++ b/drivers/media/platform/chips-media/coda-common.c
> @@ -794,7 +794,7 @@ static int coda_s_fmt(struct coda_ctx *ctx, struct v4l2_format *f,
>
> if (vb2_is_busy(vq)) {
> v4l2_err(&ctx->dev->v4l2_dev, "%s: %s queue busy: %d\n",
> - __func__, v4l2_type_names[f->type], vq->num_buffers);
> + __func__, v4l2_type_names[f->type], vb2_get_num_buffers(vq));
> return -EBUSY;
> }
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 25/56] media: pci: tw68: Stop direct calls to queue num_buffers field
2023-11-09 10:13 ` Andrzej Pietrasiewicz
(?)
@ 2023-11-09 10:23 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 10:23 UTC (permalink / raw)
To: Andrzej Pietrasiewicz, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Fabrizio Castro
Le 09/11/2023 à 11:13, Andrzej Pietrasiewicz a écrit :
> Hi Benjamin,
>
> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
>> Use vb2_get_num_buffers() to avoid using queue num_buffers field
>> directly.
>> This allows us to change how the number of buffers is computed in the
>> future.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> CC: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
>> ---
>> drivers/media/pci/tw68/tw68-video.c | 4 ++--
>> 1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/media/pci/tw68/tw68-video.c
>> b/drivers/media/pci/tw68/tw68-video.c
>> index 773a18702d36..35296c226019 100644
>> --- a/drivers/media/pci/tw68/tw68-video.c
>> +++ b/drivers/media/pci/tw68/tw68-video.c
>> @@ -360,13 +360,13 @@ static int tw68_queue_setup(struct vb2_queue *q,
>> unsigned int sizes[], struct device *alloc_devs[])
>> {
>> struct tw68_dev *dev = vb2_get_drv_priv(q);
>
> Why not
>
> unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> just like in other patches in the series?
You are right, I will change it to keep the same pattern than for the other patches.
Regards,
Benjamin
>
> Regards,
>
> Andrzej
>
>> - unsigned tot_bufs = q->num_buffers + *num_buffers;
>> + unsigned tot_bufs = vb2_get_num_buffers(q) + *num_buffers;
>> unsigned size = (dev->fmt->depth * dev->width * dev->height) >> 3;
>> if (tot_bufs < 2)
>> tot_bufs = 2;
>> tot_bufs = tw68_buffer_count(size, tot_bufs);
>> - *num_buffers = tot_bufs - q->num_buffers;
>> + *num_buffers = tot_bufs - vb2_get_num_buffers(q);
>> /*
>> * We allow create_bufs, but only if the sizeimage is >= as the
>> * current sizeimage. The tw68_buffer_count calculation becomes
>> quite
>
>
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 25/56] media: pci: tw68: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:23 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 10:23 UTC (permalink / raw)
To: Andrzej Pietrasiewicz, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Fabrizio Castro
Le 09/11/2023 à 11:13, Andrzej Pietrasiewicz a écrit :
> Hi Benjamin,
>
> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
>> Use vb2_get_num_buffers() to avoid using queue num_buffers field
>> directly.
>> This allows us to change how the number of buffers is computed in the
>> future.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> CC: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
>> ---
>> drivers/media/pci/tw68/tw68-video.c | 4 ++--
>> 1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/media/pci/tw68/tw68-video.c
>> b/drivers/media/pci/tw68/tw68-video.c
>> index 773a18702d36..35296c226019 100644
>> --- a/drivers/media/pci/tw68/tw68-video.c
>> +++ b/drivers/media/pci/tw68/tw68-video.c
>> @@ -360,13 +360,13 @@ static int tw68_queue_setup(struct vb2_queue *q,
>> unsigned int sizes[], struct device *alloc_devs[])
>> {
>> struct tw68_dev *dev = vb2_get_drv_priv(q);
>
> Why not
>
> unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> just like in other patches in the series?
You are right, I will change it to keep the same pattern than for the other patches.
Regards,
Benjamin
>
> Regards,
>
> Andrzej
>
>> - unsigned tot_bufs = q->num_buffers + *num_buffers;
>> + unsigned tot_bufs = vb2_get_num_buffers(q) + *num_buffers;
>> unsigned size = (dev->fmt->depth * dev->width * dev->height) >> 3;
>> if (tot_bufs < 2)
>> tot_bufs = 2;
>> tot_bufs = tw68_buffer_count(size, tot_bufs);
>> - *num_buffers = tot_bufs - q->num_buffers;
>> + *num_buffers = tot_bufs - vb2_get_num_buffers(q);
>> /*
>> * We allow create_bufs, but only if the sizeimage is >= as the
>> * current sizeimage. The tw68_buffer_count calculation becomes
>> quite
>
>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 25/56] media: pci: tw68: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:23 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 10:23 UTC (permalink / raw)
To: Andrzej Pietrasiewicz, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Fabrizio Castro
Le 09/11/2023 à 11:13, Andrzej Pietrasiewicz a écrit :
> Hi Benjamin,
>
> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
>> Use vb2_get_num_buffers() to avoid using queue num_buffers field
>> directly.
>> This allows us to change how the number of buffers is computed in the
>> future.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> CC: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
>> ---
>> drivers/media/pci/tw68/tw68-video.c | 4 ++--
>> 1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/media/pci/tw68/tw68-video.c
>> b/drivers/media/pci/tw68/tw68-video.c
>> index 773a18702d36..35296c226019 100644
>> --- a/drivers/media/pci/tw68/tw68-video.c
>> +++ b/drivers/media/pci/tw68/tw68-video.c
>> @@ -360,13 +360,13 @@ static int tw68_queue_setup(struct vb2_queue *q,
>> unsigned int sizes[], struct device *alloc_devs[])
>> {
>> struct tw68_dev *dev = vb2_get_drv_priv(q);
>
> Why not
>
> unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> just like in other patches in the series?
You are right, I will change it to keep the same pattern than for the other patches.
Regards,
Benjamin
>
> Regards,
>
> Andrzej
>
>> - unsigned tot_bufs = q->num_buffers + *num_buffers;
>> + unsigned tot_bufs = vb2_get_num_buffers(q) + *num_buffers;
>> unsigned size = (dev->fmt->depth * dev->width * dev->height) >> 3;
>> if (tot_bufs < 2)
>> tot_bufs = 2;
>> tot_bufs = tw68_buffer_count(size, tot_bufs);
>> - *num_buffers = tot_bufs - q->num_buffers;
>> + *num_buffers = tot_bufs - vb2_get_num_buffers(q);
>> /*
>> * We allow create_bufs, but only if the sizeimage is >= as the
>> * current sizeimage. The tw68_buffer_count calculation becomes
>> quite
>
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 28/56] media: nxp: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 10:26 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:26 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Rui Miguel Silva, Laurent Pinchart, Martin Kepplinger
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewcz <andrzej.p@collabora.com>
> CC: Rui Miguel Silva <rmfrfs@gmail.com>
> CC: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> CC: Martin Kepplinger <martink@posteo.de>
> ---
> drivers/media/platform/nxp/imx7-media-csi.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/platform/nxp/imx7-media-csi.c b/drivers/media/platform/nxp/imx7-media-csi.c
> index 15049c6aab37..4c467fb82789 100644
> --- a/drivers/media/platform/nxp/imx7-media-csi.c
> +++ b/drivers/media/platform/nxp/imx7-media-csi.c
> @@ -1245,6 +1245,7 @@ static int imx7_csi_video_queue_setup(struct vb2_queue *vq,
> struct device *alloc_devs[])
> {
> struct imx7_csi *csi = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> struct v4l2_pix_format *pix = &csi->vdev_fmt;
> unsigned int count = *nbuffers;
>
> @@ -1254,14 +1255,14 @@ static int imx7_csi_video_queue_setup(struct vb2_queue *vq,
> if (*nplanes) {
> if (*nplanes != 1 || sizes[0] < pix->sizeimage)
> return -EINVAL;
> - count += vq->num_buffers;
> + count += q_num_bufs;
> }
>
> count = min_t(__u32, IMX7_CSI_VIDEO_MEM_LIMIT / pix->sizeimage, count);
>
> if (*nplanes)
> - *nbuffers = (count < vq->num_buffers) ? 0 :
> - count - vq->num_buffers;
> + *nbuffers = (count < q_num_bufs) ? 0 :
> + count - q_num_bufs;
> else
> *nbuffers = count;
>
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 28/56] media: nxp: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:26 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:26 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Rui Miguel Silva, Laurent Pinchart, Martin Kepplinger
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewcz <andrzej.p@collabora.com>
> CC: Rui Miguel Silva <rmfrfs@gmail.com>
> CC: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> CC: Martin Kepplinger <martink@posteo.de>
> ---
> drivers/media/platform/nxp/imx7-media-csi.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/platform/nxp/imx7-media-csi.c b/drivers/media/platform/nxp/imx7-media-csi.c
> index 15049c6aab37..4c467fb82789 100644
> --- a/drivers/media/platform/nxp/imx7-media-csi.c
> +++ b/drivers/media/platform/nxp/imx7-media-csi.c
> @@ -1245,6 +1245,7 @@ static int imx7_csi_video_queue_setup(struct vb2_queue *vq,
> struct device *alloc_devs[])
> {
> struct imx7_csi *csi = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> struct v4l2_pix_format *pix = &csi->vdev_fmt;
> unsigned int count = *nbuffers;
>
> @@ -1254,14 +1255,14 @@ static int imx7_csi_video_queue_setup(struct vb2_queue *vq,
> if (*nplanes) {
> if (*nplanes != 1 || sizes[0] < pix->sizeimage)
> return -EINVAL;
> - count += vq->num_buffers;
> + count += q_num_bufs;
> }
>
> count = min_t(__u32, IMX7_CSI_VIDEO_MEM_LIMIT / pix->sizeimage, count);
>
> if (*nplanes)
> - *nbuffers = (count < vq->num_buffers) ? 0 :
> - count - vq->num_buffers;
> + *nbuffers = (count < q_num_bufs) ? 0 :
> + count - q_num_bufs;
> else
> *nbuffers = count;
>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 28/56] media: nxp: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:26 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:26 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Rui Miguel Silva, Laurent Pinchart, Martin Kepplinger
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewcz <andrzej.p@collabora.com>
> CC: Rui Miguel Silva <rmfrfs@gmail.com>
> CC: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> CC: Martin Kepplinger <martink@posteo.de>
> ---
> drivers/media/platform/nxp/imx7-media-csi.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/media/platform/nxp/imx7-media-csi.c b/drivers/media/platform/nxp/imx7-media-csi.c
> index 15049c6aab37..4c467fb82789 100644
> --- a/drivers/media/platform/nxp/imx7-media-csi.c
> +++ b/drivers/media/platform/nxp/imx7-media-csi.c
> @@ -1245,6 +1245,7 @@ static int imx7_csi_video_queue_setup(struct vb2_queue *vq,
> struct device *alloc_devs[])
> {
> struct imx7_csi *csi = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> struct v4l2_pix_format *pix = &csi->vdev_fmt;
> unsigned int count = *nbuffers;
>
> @@ -1254,14 +1255,14 @@ static int imx7_csi_video_queue_setup(struct vb2_queue *vq,
> if (*nplanes) {
> if (*nplanes != 1 || sizes[0] < pix->sizeimage)
> return -EINVAL;
> - count += vq->num_buffers;
> + count += q_num_bufs;
> }
>
> count = min_t(__u32, IMX7_CSI_VIDEO_MEM_LIMIT / pix->sizeimage, count);
>
> if (*nplanes)
> - *nbuffers = (count < vq->num_buffers) ? 0 :
> - count - vq->num_buffers;
> + *nbuffers = (count < q_num_bufs) ? 0 :
> + count - q_num_bufs;
> else
> *nbuffers = count;
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 26/56] media: i2c: video-i2c: Stop direct calls to queue num_buffers field
2023-11-09 10:18 ` Andrzej Pietrasiewicz
(?)
@ 2023-11-09 10:26 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 10:26 UTC (permalink / raw)
To: Andrzej Pietrasiewicz, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Matt Ranostay
Le 09/11/2023 à 11:18, Andrzej Pietrasiewicz a écrit :
> Hi Benjamin,
>
> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
>> Use vb2_get_num_buffers() to avoid using queue num_buffers field
>> directly.
>> This allows us to change how the number of buffers is computed in the
>> future.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> CC: Matt Ranostay <matt.ranostay@konsulko.com>
>> ---
>> drivers/media/i2c/video-i2c.c | 5 +++--
>> 1 file changed, 3 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/media/i2c/video-i2c.c
>> b/drivers/media/i2c/video-i2c.c
>> index 178bd06cc2ed..ebf2ac98a068 100644
>> --- a/drivers/media/i2c/video-i2c.c
>> +++ b/drivers/media/i2c/video-i2c.c
>> @@ -405,9 +405,10 @@ static int queue_setup(struct vb2_queue *vq,
>> {
>> struct video_i2c_data *data = vb2_get_drv_priv(vq);
>> unsigned int size = data->chip->buffer_size;
>> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>> - if (vq->num_buffers + *nbuffers < 2)
>> - *nbuffers = 2;
>> + if (q_num_bufs + *nbuffers < 2)
>> + *nbuffers = 2 - q_num_bufs;
>
> This actually changes the logic. Maybe it has already been discussed and
> the result of that discussion is this change in logic? Looking at other
> drivers *nbuffers = 2 - q_num_bufs; seems the right thing to do.
> But then at least the commit message body IMO should mention this change.
> Or, preferably, the change in logic should be a separate patch to be
> applied
> before this one.
I will add word about that in the commit message.
Thanks.
Benjamin
>
> Regards,
>
> Andrzej
>
>> if (*nplanes)
>> return sizes[0] < size ? -EINVAL : 0;
>
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 26/56] media: i2c: video-i2c: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:26 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 10:26 UTC (permalink / raw)
To: Andrzej Pietrasiewicz, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Matt Ranostay
Le 09/11/2023 à 11:18, Andrzej Pietrasiewicz a écrit :
> Hi Benjamin,
>
> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
>> Use vb2_get_num_buffers() to avoid using queue num_buffers field
>> directly.
>> This allows us to change how the number of buffers is computed in the
>> future.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> CC: Matt Ranostay <matt.ranostay@konsulko.com>
>> ---
>> drivers/media/i2c/video-i2c.c | 5 +++--
>> 1 file changed, 3 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/media/i2c/video-i2c.c
>> b/drivers/media/i2c/video-i2c.c
>> index 178bd06cc2ed..ebf2ac98a068 100644
>> --- a/drivers/media/i2c/video-i2c.c
>> +++ b/drivers/media/i2c/video-i2c.c
>> @@ -405,9 +405,10 @@ static int queue_setup(struct vb2_queue *vq,
>> {
>> struct video_i2c_data *data = vb2_get_drv_priv(vq);
>> unsigned int size = data->chip->buffer_size;
>> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>> - if (vq->num_buffers + *nbuffers < 2)
>> - *nbuffers = 2;
>> + if (q_num_bufs + *nbuffers < 2)
>> + *nbuffers = 2 - q_num_bufs;
>
> This actually changes the logic. Maybe it has already been discussed and
> the result of that discussion is this change in logic? Looking at other
> drivers *nbuffers = 2 - q_num_bufs; seems the right thing to do.
> But then at least the commit message body IMO should mention this change.
> Or, preferably, the change in logic should be a separate patch to be
> applied
> before this one.
I will add word about that in the commit message.
Thanks.
Benjamin
>
> Regards,
>
> Andrzej
>
>> if (*nplanes)
>> return sizes[0] < size ? -EINVAL : 0;
>
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 26/56] media: i2c: video-i2c: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:26 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 10:26 UTC (permalink / raw)
To: Andrzej Pietrasiewicz, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Matt Ranostay
Le 09/11/2023 à 11:18, Andrzej Pietrasiewicz a écrit :
> Hi Benjamin,
>
> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
>> Use vb2_get_num_buffers() to avoid using queue num_buffers field
>> directly.
>> This allows us to change how the number of buffers is computed in the
>> future.
>>
>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>> CC: Matt Ranostay <matt.ranostay@konsulko.com>
>> ---
>> drivers/media/i2c/video-i2c.c | 5 +++--
>> 1 file changed, 3 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/media/i2c/video-i2c.c
>> b/drivers/media/i2c/video-i2c.c
>> index 178bd06cc2ed..ebf2ac98a068 100644
>> --- a/drivers/media/i2c/video-i2c.c
>> +++ b/drivers/media/i2c/video-i2c.c
>> @@ -405,9 +405,10 @@ static int queue_setup(struct vb2_queue *vq,
>> {
>> struct video_i2c_data *data = vb2_get_drv_priv(vq);
>> unsigned int size = data->chip->buffer_size;
>> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>> - if (vq->num_buffers + *nbuffers < 2)
>> - *nbuffers = 2;
>> + if (q_num_bufs + *nbuffers < 2)
>> + *nbuffers = 2 - q_num_bufs;
>
> This actually changes the logic. Maybe it has already been discussed and
> the result of that discussion is this change in logic? Looking at other
> drivers *nbuffers = 2 - q_num_bufs; seems the right thing to do.
> But then at least the commit message body IMO should mention this change.
> Or, preferably, the change in logic should be a separate patch to be
> applied
> before this one.
I will add word about that in the commit message.
Thanks.
Benjamin
>
> Regards,
>
> Andrzej
>
>> if (*nplanes)
>> return sizes[0] < size ? -EINVAL : 0;
>
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 29/56] media: verisilicon: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 10:28 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:28 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> ---
> drivers/media/platform/verisilicon/hantro_postproc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/verisilicon/hantro_postproc.c b/drivers/media/platform/verisilicon/hantro_postproc.c
> index 64d6fb852ae9..8f8f17e671ce 100644
> --- a/drivers/media/platform/verisilicon/hantro_postproc.c
> +++ b/drivers/media/platform/verisilicon/hantro_postproc.c
> @@ -195,7 +195,7 @@ int hantro_postproc_alloc(struct hantro_ctx *ctx)
> struct hantro_dev *vpu = ctx->dev;
> struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
> struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
> - unsigned int num_buffers = cap_queue->num_buffers;
> + unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
> struct v4l2_pix_format_mplane pix_mp;
> const struct hantro_fmt *fmt;
> unsigned int i, buf_size;
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 29/56] media: verisilicon: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:28 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:28 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> ---
> drivers/media/platform/verisilicon/hantro_postproc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/verisilicon/hantro_postproc.c b/drivers/media/platform/verisilicon/hantro_postproc.c
> index 64d6fb852ae9..8f8f17e671ce 100644
> --- a/drivers/media/platform/verisilicon/hantro_postproc.c
> +++ b/drivers/media/platform/verisilicon/hantro_postproc.c
> @@ -195,7 +195,7 @@ int hantro_postproc_alloc(struct hantro_ctx *ctx)
> struct hantro_dev *vpu = ctx->dev;
> struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
> struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
> - unsigned int num_buffers = cap_queue->num_buffers;
> + unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
> struct v4l2_pix_format_mplane pix_mp;
> const struct hantro_fmt *fmt;
> unsigned int i, buf_size;
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 29/56] media: verisilicon: Stop direct calls to queue num_buffers field
@ 2023-11-09 10:28 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 10:28 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> ---
> drivers/media/platform/verisilicon/hantro_postproc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/verisilicon/hantro_postproc.c b/drivers/media/platform/verisilicon/hantro_postproc.c
> index 64d6fb852ae9..8f8f17e671ce 100644
> --- a/drivers/media/platform/verisilicon/hantro_postproc.c
> +++ b/drivers/media/platform/verisilicon/hantro_postproc.c
> @@ -195,7 +195,7 @@ int hantro_postproc_alloc(struct hantro_ctx *ctx)
> struct hantro_dev *vpu = ctx->dev;
> struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
> struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
> - unsigned int num_buffers = cap_queue->num_buffers;
> + unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
> struct v4l2_pix_format_mplane pix_mp;
> const struct hantro_fmt *fmt;
> unsigned int i, buf_size;
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 30/56] media: test-drivers: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 11:10 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:10 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Daniel Almeida
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
> If 'min_buffers_needed' is set remove useless checks in queue setup
> functions.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> CC: Daniel Almeida <daniel.almeida@collabora.com>
> ---
> drivers/media/test-drivers/visl/visl-dec.c | 4 ++--
> drivers/media/test-drivers/vivid/vivid-meta-cap.c | 3 ---
> drivers/media/test-drivers/vivid/vivid-meta-out.c | 5 +++--
> drivers/media/test-drivers/vivid/vivid-touch-cap.c | 5 +++--
> drivers/media/test-drivers/vivid/vivid-vbi-cap.c | 3 ---
> drivers/media/test-drivers/vivid/vivid-vbi-out.c | 3 ---
> drivers/media/test-drivers/vivid/vivid-vid-cap.c | 3 ---
> drivers/media/test-drivers/vivid/vivid-vid-out.c | 5 +----
> 8 files changed, 9 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/media/test-drivers/visl/visl-dec.c b/drivers/media/test-drivers/visl/visl-dec.c
> index ba20ea998d19..4672dc5e52bb 100644
> --- a/drivers/media/test-drivers/visl/visl-dec.c
> +++ b/drivers/media/test-drivers/visl/visl-dec.c
> @@ -287,7 +287,7 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
> frame_dprintk(ctx->dev, run->dst->sequence, "%s\n", buf);
>
> len = 0;
> - for (i = 0; i < out_q->num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(out_q); i++) {
> char entry[] = "index: %u, state: %s, request_fd: %d, ";
> u32 old_len = len;
> struct vb2_buffer *vb2;
> @@ -347,7 +347,7 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
> frame_dprintk(ctx->dev, run->dst->sequence, "%s\n", buf);
>
> len = 0;
> - for (i = 0; i < cap_q->num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(cap_q); i++) {
> u32 old_len = len;
> struct vb2_buffer *vb2;
> char *q_status;
> diff --git a/drivers/media/test-drivers/vivid/vivid-meta-cap.c b/drivers/media/test-drivers/vivid/vivid-meta-cap.c
> index 780f96860a6d..0a718d037e59 100644
> --- a/drivers/media/test-drivers/vivid/vivid-meta-cap.c
> +++ b/drivers/media/test-drivers/vivid/vivid-meta-cap.c
> @@ -30,9 +30,6 @@ static int meta_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
> sizes[0] = size;
> }
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> -
> *nplanes = 1;
> return 0;
> }
> diff --git a/drivers/media/test-drivers/vivid/vivid-meta-out.c b/drivers/media/test-drivers/vivid/vivid-meta-out.c
> index 95835b52b58f..4a569a6e58be 100644
> --- a/drivers/media/test-drivers/vivid/vivid-meta-out.c
> +++ b/drivers/media/test-drivers/vivid/vivid-meta-out.c
> @@ -18,6 +18,7 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
> struct device *alloc_devs[])
> {
> struct vivid_dev *dev = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> unsigned int size = sizeof(struct vivid_meta_out_buf);
>
> if (!vivid_is_webcam(dev))
> @@ -30,8 +31,8 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
> sizes[0] = size;
> }
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 2)
> + *nbuffers = 2 - q_num_bufs;
>
> *nplanes = 1;
> return 0;
> diff --git a/drivers/media/test-drivers/vivid/vivid-touch-cap.c b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
> index c7f6e23df51e..4b3c6ea0afde 100644
> --- a/drivers/media/test-drivers/vivid/vivid-touch-cap.c
> +++ b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
> @@ -13,6 +13,7 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
> struct device *alloc_devs[])
> {
> struct vivid_dev *dev = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> struct v4l2_pix_format *f = &dev->tch_format;
> unsigned int size = f->sizeimage;
>
> @@ -23,8 +24,8 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
> sizes[0] = size;
> }
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 2)
> + *nbuffers = 2 - q_num_bufs;
>
> *nplanes = 1;
> return 0;
> diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-cap.c b/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
> index b65b02eeeb97..3840b3a664ac 100644
> --- a/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
> +++ b/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
> @@ -134,9 +134,6 @@ static int vbi_cap_queue_setup(struct vb2_queue *vq,
>
> sizes[0] = size;
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> -
> *nplanes = 1;
> return 0;
> }
> diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-out.c b/drivers/media/test-drivers/vivid/vivid-vbi-out.c
> index cd56476902a2..434a10676417 100644
> --- a/drivers/media/test-drivers/vivid/vivid-vbi-out.c
> +++ b/drivers/media/test-drivers/vivid/vivid-vbi-out.c
> @@ -30,9 +30,6 @@ static int vbi_out_queue_setup(struct vb2_queue *vq,
>
> sizes[0] = size;
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> -
> *nplanes = 1;
> return 0;
> }
> diff --git a/drivers/media/test-drivers/vivid/vivid-vid-cap.c b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
> index 3a06df35a2d7..2804975fe278 100644
> --- a/drivers/media/test-drivers/vivid/vivid-vid-cap.c
> +++ b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
> @@ -117,9 +117,6 @@ static int vid_cap_queue_setup(struct vb2_queue *vq,
> dev->fmt_cap->data_offset[p];
> }
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> -
> *nplanes = buffers;
>
> dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
> diff --git a/drivers/media/test-drivers/vivid/vivid-vid-out.c b/drivers/media/test-drivers/vivid/vivid-vid-out.c
> index 184a6df2c29f..24c6dc896255 100644
> --- a/drivers/media/test-drivers/vivid/vivid-vid-out.c
> +++ b/drivers/media/test-drivers/vivid/vivid-vid-out.c
> @@ -73,12 +73,9 @@ static int vid_out_queue_setup(struct vb2_queue *vq,
> vfmt->data_offset[p] : size;
> }
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> -
> *nplanes = planes;
>
> - dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
> + dprintk(dev, 1, "%s: count=%u\n", __func__, vb2_get_num_buffers(vq));
I assume it can be guaranteed that *nbuffers equals vb2_get_num_buffers(vq),
because q->min_buffers_needed is set for this queue?
Can you make it consistent with vid_cap_queue_setup() either by removing this
change to dprintk() or introducing a similar one in vid_cap_queue_setup()?
Regards,
Andrzej
> for (p = 0; p < planes; p++)
> dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
> return 0;
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 30/56] media: test-drivers: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:10 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:10 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Daniel Almeida
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
> If 'min_buffers_needed' is set remove useless checks in queue setup
> functions.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> CC: Daniel Almeida <daniel.almeida@collabora.com>
> ---
> drivers/media/test-drivers/visl/visl-dec.c | 4 ++--
> drivers/media/test-drivers/vivid/vivid-meta-cap.c | 3 ---
> drivers/media/test-drivers/vivid/vivid-meta-out.c | 5 +++--
> drivers/media/test-drivers/vivid/vivid-touch-cap.c | 5 +++--
> drivers/media/test-drivers/vivid/vivid-vbi-cap.c | 3 ---
> drivers/media/test-drivers/vivid/vivid-vbi-out.c | 3 ---
> drivers/media/test-drivers/vivid/vivid-vid-cap.c | 3 ---
> drivers/media/test-drivers/vivid/vivid-vid-out.c | 5 +----
> 8 files changed, 9 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/media/test-drivers/visl/visl-dec.c b/drivers/media/test-drivers/visl/visl-dec.c
> index ba20ea998d19..4672dc5e52bb 100644
> --- a/drivers/media/test-drivers/visl/visl-dec.c
> +++ b/drivers/media/test-drivers/visl/visl-dec.c
> @@ -287,7 +287,7 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
> frame_dprintk(ctx->dev, run->dst->sequence, "%s\n", buf);
>
> len = 0;
> - for (i = 0; i < out_q->num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(out_q); i++) {
> char entry[] = "index: %u, state: %s, request_fd: %d, ";
> u32 old_len = len;
> struct vb2_buffer *vb2;
> @@ -347,7 +347,7 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
> frame_dprintk(ctx->dev, run->dst->sequence, "%s\n", buf);
>
> len = 0;
> - for (i = 0; i < cap_q->num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(cap_q); i++) {
> u32 old_len = len;
> struct vb2_buffer *vb2;
> char *q_status;
> diff --git a/drivers/media/test-drivers/vivid/vivid-meta-cap.c b/drivers/media/test-drivers/vivid/vivid-meta-cap.c
> index 780f96860a6d..0a718d037e59 100644
> --- a/drivers/media/test-drivers/vivid/vivid-meta-cap.c
> +++ b/drivers/media/test-drivers/vivid/vivid-meta-cap.c
> @@ -30,9 +30,6 @@ static int meta_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
> sizes[0] = size;
> }
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> -
> *nplanes = 1;
> return 0;
> }
> diff --git a/drivers/media/test-drivers/vivid/vivid-meta-out.c b/drivers/media/test-drivers/vivid/vivid-meta-out.c
> index 95835b52b58f..4a569a6e58be 100644
> --- a/drivers/media/test-drivers/vivid/vivid-meta-out.c
> +++ b/drivers/media/test-drivers/vivid/vivid-meta-out.c
> @@ -18,6 +18,7 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
> struct device *alloc_devs[])
> {
> struct vivid_dev *dev = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> unsigned int size = sizeof(struct vivid_meta_out_buf);
>
> if (!vivid_is_webcam(dev))
> @@ -30,8 +31,8 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
> sizes[0] = size;
> }
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 2)
> + *nbuffers = 2 - q_num_bufs;
>
> *nplanes = 1;
> return 0;
> diff --git a/drivers/media/test-drivers/vivid/vivid-touch-cap.c b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
> index c7f6e23df51e..4b3c6ea0afde 100644
> --- a/drivers/media/test-drivers/vivid/vivid-touch-cap.c
> +++ b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
> @@ -13,6 +13,7 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
> struct device *alloc_devs[])
> {
> struct vivid_dev *dev = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> struct v4l2_pix_format *f = &dev->tch_format;
> unsigned int size = f->sizeimage;
>
> @@ -23,8 +24,8 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
> sizes[0] = size;
> }
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 2)
> + *nbuffers = 2 - q_num_bufs;
>
> *nplanes = 1;
> return 0;
> diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-cap.c b/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
> index b65b02eeeb97..3840b3a664ac 100644
> --- a/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
> +++ b/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
> @@ -134,9 +134,6 @@ static int vbi_cap_queue_setup(struct vb2_queue *vq,
>
> sizes[0] = size;
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> -
> *nplanes = 1;
> return 0;
> }
> diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-out.c b/drivers/media/test-drivers/vivid/vivid-vbi-out.c
> index cd56476902a2..434a10676417 100644
> --- a/drivers/media/test-drivers/vivid/vivid-vbi-out.c
> +++ b/drivers/media/test-drivers/vivid/vivid-vbi-out.c
> @@ -30,9 +30,6 @@ static int vbi_out_queue_setup(struct vb2_queue *vq,
>
> sizes[0] = size;
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> -
> *nplanes = 1;
> return 0;
> }
> diff --git a/drivers/media/test-drivers/vivid/vivid-vid-cap.c b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
> index 3a06df35a2d7..2804975fe278 100644
> --- a/drivers/media/test-drivers/vivid/vivid-vid-cap.c
> +++ b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
> @@ -117,9 +117,6 @@ static int vid_cap_queue_setup(struct vb2_queue *vq,
> dev->fmt_cap->data_offset[p];
> }
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> -
> *nplanes = buffers;
>
> dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
> diff --git a/drivers/media/test-drivers/vivid/vivid-vid-out.c b/drivers/media/test-drivers/vivid/vivid-vid-out.c
> index 184a6df2c29f..24c6dc896255 100644
> --- a/drivers/media/test-drivers/vivid/vivid-vid-out.c
> +++ b/drivers/media/test-drivers/vivid/vivid-vid-out.c
> @@ -73,12 +73,9 @@ static int vid_out_queue_setup(struct vb2_queue *vq,
> vfmt->data_offset[p] : size;
> }
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> -
> *nplanes = planes;
>
> - dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
> + dprintk(dev, 1, "%s: count=%u\n", __func__, vb2_get_num_buffers(vq));
I assume it can be guaranteed that *nbuffers equals vb2_get_num_buffers(vq),
because q->min_buffers_needed is set for this queue?
Can you make it consistent with vid_cap_queue_setup() either by removing this
change to dprintk() or introducing a similar one in vid_cap_queue_setup()?
Regards,
Andrzej
> for (p = 0; p < planes; p++)
> dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
> return 0;
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 30/56] media: test-drivers: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:10 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:10 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Daniel Almeida
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
> If 'min_buffers_needed' is set remove useless checks in queue setup
> functions.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> CC: Daniel Almeida <daniel.almeida@collabora.com>
> ---
> drivers/media/test-drivers/visl/visl-dec.c | 4 ++--
> drivers/media/test-drivers/vivid/vivid-meta-cap.c | 3 ---
> drivers/media/test-drivers/vivid/vivid-meta-out.c | 5 +++--
> drivers/media/test-drivers/vivid/vivid-touch-cap.c | 5 +++--
> drivers/media/test-drivers/vivid/vivid-vbi-cap.c | 3 ---
> drivers/media/test-drivers/vivid/vivid-vbi-out.c | 3 ---
> drivers/media/test-drivers/vivid/vivid-vid-cap.c | 3 ---
> drivers/media/test-drivers/vivid/vivid-vid-out.c | 5 +----
> 8 files changed, 9 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/media/test-drivers/visl/visl-dec.c b/drivers/media/test-drivers/visl/visl-dec.c
> index ba20ea998d19..4672dc5e52bb 100644
> --- a/drivers/media/test-drivers/visl/visl-dec.c
> +++ b/drivers/media/test-drivers/visl/visl-dec.c
> @@ -287,7 +287,7 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
> frame_dprintk(ctx->dev, run->dst->sequence, "%s\n", buf);
>
> len = 0;
> - for (i = 0; i < out_q->num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(out_q); i++) {
> char entry[] = "index: %u, state: %s, request_fd: %d, ";
> u32 old_len = len;
> struct vb2_buffer *vb2;
> @@ -347,7 +347,7 @@ static void visl_tpg_fill(struct visl_ctx *ctx, struct visl_run *run)
> frame_dprintk(ctx->dev, run->dst->sequence, "%s\n", buf);
>
> len = 0;
> - for (i = 0; i < cap_q->num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(cap_q); i++) {
> u32 old_len = len;
> struct vb2_buffer *vb2;
> char *q_status;
> diff --git a/drivers/media/test-drivers/vivid/vivid-meta-cap.c b/drivers/media/test-drivers/vivid/vivid-meta-cap.c
> index 780f96860a6d..0a718d037e59 100644
> --- a/drivers/media/test-drivers/vivid/vivid-meta-cap.c
> +++ b/drivers/media/test-drivers/vivid/vivid-meta-cap.c
> @@ -30,9 +30,6 @@ static int meta_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
> sizes[0] = size;
> }
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> -
> *nplanes = 1;
> return 0;
> }
> diff --git a/drivers/media/test-drivers/vivid/vivid-meta-out.c b/drivers/media/test-drivers/vivid/vivid-meta-out.c
> index 95835b52b58f..4a569a6e58be 100644
> --- a/drivers/media/test-drivers/vivid/vivid-meta-out.c
> +++ b/drivers/media/test-drivers/vivid/vivid-meta-out.c
> @@ -18,6 +18,7 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
> struct device *alloc_devs[])
> {
> struct vivid_dev *dev = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> unsigned int size = sizeof(struct vivid_meta_out_buf);
>
> if (!vivid_is_webcam(dev))
> @@ -30,8 +31,8 @@ static int meta_out_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
> sizes[0] = size;
> }
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 2)
> + *nbuffers = 2 - q_num_bufs;
>
> *nplanes = 1;
> return 0;
> diff --git a/drivers/media/test-drivers/vivid/vivid-touch-cap.c b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
> index c7f6e23df51e..4b3c6ea0afde 100644
> --- a/drivers/media/test-drivers/vivid/vivid-touch-cap.c
> +++ b/drivers/media/test-drivers/vivid/vivid-touch-cap.c
> @@ -13,6 +13,7 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
> struct device *alloc_devs[])
> {
> struct vivid_dev *dev = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> struct v4l2_pix_format *f = &dev->tch_format;
> unsigned int size = f->sizeimage;
>
> @@ -23,8 +24,8 @@ static int touch_cap_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers,
> sizes[0] = size;
> }
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 2)
> + *nbuffers = 2 - q_num_bufs;
>
> *nplanes = 1;
> return 0;
> diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-cap.c b/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
> index b65b02eeeb97..3840b3a664ac 100644
> --- a/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
> +++ b/drivers/media/test-drivers/vivid/vivid-vbi-cap.c
> @@ -134,9 +134,6 @@ static int vbi_cap_queue_setup(struct vb2_queue *vq,
>
> sizes[0] = size;
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> -
> *nplanes = 1;
> return 0;
> }
> diff --git a/drivers/media/test-drivers/vivid/vivid-vbi-out.c b/drivers/media/test-drivers/vivid/vivid-vbi-out.c
> index cd56476902a2..434a10676417 100644
> --- a/drivers/media/test-drivers/vivid/vivid-vbi-out.c
> +++ b/drivers/media/test-drivers/vivid/vivid-vbi-out.c
> @@ -30,9 +30,6 @@ static int vbi_out_queue_setup(struct vb2_queue *vq,
>
> sizes[0] = size;
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> -
> *nplanes = 1;
> return 0;
> }
> diff --git a/drivers/media/test-drivers/vivid/vivid-vid-cap.c b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
> index 3a06df35a2d7..2804975fe278 100644
> --- a/drivers/media/test-drivers/vivid/vivid-vid-cap.c
> +++ b/drivers/media/test-drivers/vivid/vivid-vid-cap.c
> @@ -117,9 +117,6 @@ static int vid_cap_queue_setup(struct vb2_queue *vq,
> dev->fmt_cap->data_offset[p];
> }
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> -
> *nplanes = buffers;
>
> dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
> diff --git a/drivers/media/test-drivers/vivid/vivid-vid-out.c b/drivers/media/test-drivers/vivid/vivid-vid-out.c
> index 184a6df2c29f..24c6dc896255 100644
> --- a/drivers/media/test-drivers/vivid/vivid-vid-out.c
> +++ b/drivers/media/test-drivers/vivid/vivid-vid-out.c
> @@ -73,12 +73,9 @@ static int vid_out_queue_setup(struct vb2_queue *vq,
> vfmt->data_offset[p] : size;
> }
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> -
> *nplanes = planes;
>
> - dprintk(dev, 1, "%s: count=%d\n", __func__, *nbuffers);
> + dprintk(dev, 1, "%s: count=%u\n", __func__, vb2_get_num_buffers(vq));
I assume it can be guaranteed that *nbuffers equals vb2_get_num_buffers(vq),
because q->min_buffers_needed is set for this queue?
Can you make it consistent with vid_cap_queue_setup() either by removing this
change to dprintk() or introducing a similar one in vid_cap_queue_setup()?
Regards,
Andrzej
> for (p = 0; p < planes; p++)
> dprintk(dev, 1, "%s: size[%u]=%u\n", __func__, p, sizes[p]);
> return 0;
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 31/56] media: imx: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 11:12 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:12 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Steve Longerbeam
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Steve Longerbeam <slongerbeam@gmail.com>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> drivers/staging/media/imx/imx-media-capture.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/staging/media/imx/imx-media-capture.c b/drivers/staging/media/imx/imx-media-capture.c
> index 4846078315ff..ce02199e7b1b 100644
> --- a/drivers/staging/media/imx/imx-media-capture.c
> +++ b/drivers/staging/media/imx/imx-media-capture.c
> @@ -605,6 +605,7 @@ static int capture_queue_setup(struct vb2_queue *vq,
> {
> struct capture_priv *priv = vb2_get_drv_priv(vq);
> struct v4l2_pix_format *pix = &priv->vdev.fmt;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> unsigned int count = *nbuffers;
>
> if (vq->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
> @@ -613,14 +614,14 @@ static int capture_queue_setup(struct vb2_queue *vq,
> if (*nplanes) {
> if (*nplanes != 1 || sizes[0] < pix->sizeimage)
> return -EINVAL;
> - count += vq->num_buffers;
> + count += q_num_bufs;
> }
>
> count = min_t(__u32, VID_MEM_LIMIT / pix->sizeimage, count);
>
> if (*nplanes)
> - *nbuffers = (count < vq->num_buffers) ? 0 :
> - count - vq->num_buffers;
> + *nbuffers = (count < q_num_bufs) ? 0 :
> + count - q_num_bufs;
> else
> *nbuffers = count;
>
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 31/56] media: imx: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:12 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:12 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Steve Longerbeam
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Steve Longerbeam <slongerbeam@gmail.com>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> drivers/staging/media/imx/imx-media-capture.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/staging/media/imx/imx-media-capture.c b/drivers/staging/media/imx/imx-media-capture.c
> index 4846078315ff..ce02199e7b1b 100644
> --- a/drivers/staging/media/imx/imx-media-capture.c
> +++ b/drivers/staging/media/imx/imx-media-capture.c
> @@ -605,6 +605,7 @@ static int capture_queue_setup(struct vb2_queue *vq,
> {
> struct capture_priv *priv = vb2_get_drv_priv(vq);
> struct v4l2_pix_format *pix = &priv->vdev.fmt;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> unsigned int count = *nbuffers;
>
> if (vq->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
> @@ -613,14 +614,14 @@ static int capture_queue_setup(struct vb2_queue *vq,
> if (*nplanes) {
> if (*nplanes != 1 || sizes[0] < pix->sizeimage)
> return -EINVAL;
> - count += vq->num_buffers;
> + count += q_num_bufs;
> }
>
> count = min_t(__u32, VID_MEM_LIMIT / pix->sizeimage, count);
>
> if (*nplanes)
> - *nbuffers = (count < vq->num_buffers) ? 0 :
> - count - vq->num_buffers;
> + *nbuffers = (count < q_num_bufs) ? 0 :
> + count - q_num_bufs;
> else
> *nbuffers = count;
>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 31/56] media: imx: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:12 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:12 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Steve Longerbeam
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Steve Longerbeam <slongerbeam@gmail.com>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> drivers/staging/media/imx/imx-media-capture.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/staging/media/imx/imx-media-capture.c b/drivers/staging/media/imx/imx-media-capture.c
> index 4846078315ff..ce02199e7b1b 100644
> --- a/drivers/staging/media/imx/imx-media-capture.c
> +++ b/drivers/staging/media/imx/imx-media-capture.c
> @@ -605,6 +605,7 @@ static int capture_queue_setup(struct vb2_queue *vq,
> {
> struct capture_priv *priv = vb2_get_drv_priv(vq);
> struct v4l2_pix_format *pix = &priv->vdev.fmt;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> unsigned int count = *nbuffers;
>
> if (vq->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
> @@ -613,14 +614,14 @@ static int capture_queue_setup(struct vb2_queue *vq,
> if (*nplanes) {
> if (*nplanes != 1 || sizes[0] < pix->sizeimage)
> return -EINVAL;
> - count += vq->num_buffers;
> + count += q_num_bufs;
> }
>
> count = min_t(__u32, VID_MEM_LIMIT / pix->sizeimage, count);
>
> if (*nplanes)
> - *nbuffers = (count < vq->num_buffers) ? 0 :
> - count - vq->num_buffers;
> + *nbuffers = (count < q_num_bufs) ? 0 :
> + count - q_num_bufs;
> else
> *nbuffers = count;
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 32/56] media: meson: vdec: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 11:17 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:17 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Neil Armstrong
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Neil Armstrong <neil.armstrong@linaro.org>
> ---
> drivers/staging/media/meson/vdec/vdec.c | 13 +++++++------
> 1 file changed, 7 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/staging/media/meson/vdec/vdec.c b/drivers/staging/media/meson/vdec/vdec.c
> index 219185aaa588..1e2369f104c8 100644
> --- a/drivers/staging/media/meson/vdec/vdec.c
> +++ b/drivers/staging/media/meson/vdec/vdec.c
> @@ -167,22 +167,23 @@ static void process_num_buffers(struct vb2_queue *q,
> bool is_reqbufs)
> {
> const struct amvdec_format *fmt_out = sess->fmt_out;
> - unsigned int buffers_total = q->num_buffers + *num_buffers;
> + unsigned int q_num_bufs = vb2_get_num_buffers(q);
> + unsigned int buffers_total = q_num_bufs + *num_buffers;
> u32 min_buf_capture = v4l2_ctrl_g_ctrl(sess->ctrl_min_buf_capture);
>
> - if (q->num_buffers + *num_buffers < min_buf_capture)
> - *num_buffers = min_buf_capture - q->num_buffers;
> + if (q_num_bufs + *num_buffers < min_buf_capture)
> + *num_buffers = min_buf_capture - q_num_bufs;
> if (is_reqbufs && buffers_total < fmt_out->min_buffers)
> - *num_buffers = fmt_out->min_buffers - q->num_buffers;
> + *num_buffers = fmt_out->min_buffers - q_num_bufs;
> if (buffers_total > fmt_out->max_buffers)
> - *num_buffers = fmt_out->max_buffers - q->num_buffers;
> + *num_buffers = fmt_out->max_buffers - q_num_bufs;
>
> /* We need to program the complete CAPTURE buffer list
> * in registers during start_streaming, and the firmwares
> * are free to choose any of them to write frames to. As such,
> * we need all of them to be queued into the driver
> */
> - sess->num_dst_bufs = q->num_buffers + *num_buffers;
> + sess->num_dst_bufs = q_num_bufs + *num_buffers;
> q->min_buffers_needed = max(fmt_out->min_buffers, sess->num_dst_bufs);
> }
>
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 32/56] media: meson: vdec: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:17 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:17 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Neil Armstrong
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Neil Armstrong <neil.armstrong@linaro.org>
> ---
> drivers/staging/media/meson/vdec/vdec.c | 13 +++++++------
> 1 file changed, 7 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/staging/media/meson/vdec/vdec.c b/drivers/staging/media/meson/vdec/vdec.c
> index 219185aaa588..1e2369f104c8 100644
> --- a/drivers/staging/media/meson/vdec/vdec.c
> +++ b/drivers/staging/media/meson/vdec/vdec.c
> @@ -167,22 +167,23 @@ static void process_num_buffers(struct vb2_queue *q,
> bool is_reqbufs)
> {
> const struct amvdec_format *fmt_out = sess->fmt_out;
> - unsigned int buffers_total = q->num_buffers + *num_buffers;
> + unsigned int q_num_bufs = vb2_get_num_buffers(q);
> + unsigned int buffers_total = q_num_bufs + *num_buffers;
> u32 min_buf_capture = v4l2_ctrl_g_ctrl(sess->ctrl_min_buf_capture);
>
> - if (q->num_buffers + *num_buffers < min_buf_capture)
> - *num_buffers = min_buf_capture - q->num_buffers;
> + if (q_num_bufs + *num_buffers < min_buf_capture)
> + *num_buffers = min_buf_capture - q_num_bufs;
> if (is_reqbufs && buffers_total < fmt_out->min_buffers)
> - *num_buffers = fmt_out->min_buffers - q->num_buffers;
> + *num_buffers = fmt_out->min_buffers - q_num_bufs;
> if (buffers_total > fmt_out->max_buffers)
> - *num_buffers = fmt_out->max_buffers - q->num_buffers;
> + *num_buffers = fmt_out->max_buffers - q_num_bufs;
>
> /* We need to program the complete CAPTURE buffer list
> * in registers during start_streaming, and the firmwares
> * are free to choose any of them to write frames to. As such,
> * we need all of them to be queued into the driver
> */
> - sess->num_dst_bufs = q->num_buffers + *num_buffers;
> + sess->num_dst_bufs = q_num_bufs + *num_buffers;
> q->min_buffers_needed = max(fmt_out->min_buffers, sess->num_dst_bufs);
> }
>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 32/56] media: meson: vdec: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:17 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:17 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Neil Armstrong
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Neil Armstrong <neil.armstrong@linaro.org>
> ---
> drivers/staging/media/meson/vdec/vdec.c | 13 +++++++------
> 1 file changed, 7 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/staging/media/meson/vdec/vdec.c b/drivers/staging/media/meson/vdec/vdec.c
> index 219185aaa588..1e2369f104c8 100644
> --- a/drivers/staging/media/meson/vdec/vdec.c
> +++ b/drivers/staging/media/meson/vdec/vdec.c
> @@ -167,22 +167,23 @@ static void process_num_buffers(struct vb2_queue *q,
> bool is_reqbufs)
> {
> const struct amvdec_format *fmt_out = sess->fmt_out;
> - unsigned int buffers_total = q->num_buffers + *num_buffers;
> + unsigned int q_num_bufs = vb2_get_num_buffers(q);
> + unsigned int buffers_total = q_num_bufs + *num_buffers;
> u32 min_buf_capture = v4l2_ctrl_g_ctrl(sess->ctrl_min_buf_capture);
>
> - if (q->num_buffers + *num_buffers < min_buf_capture)
> - *num_buffers = min_buf_capture - q->num_buffers;
> + if (q_num_bufs + *num_buffers < min_buf_capture)
> + *num_buffers = min_buf_capture - q_num_bufs;
> if (is_reqbufs && buffers_total < fmt_out->min_buffers)
> - *num_buffers = fmt_out->min_buffers - q->num_buffers;
> + *num_buffers = fmt_out->min_buffers - q_num_bufs;
> if (buffers_total > fmt_out->max_buffers)
> - *num_buffers = fmt_out->max_buffers - q->num_buffers;
> + *num_buffers = fmt_out->max_buffers - q_num_bufs;
>
> /* We need to program the complete CAPTURE buffer list
> * in registers during start_streaming, and the firmwares
> * are free to choose any of them to write frames to. As such,
> * we need all of them to be queued into the driver
> */
> - sess->num_dst_bufs = q->num_buffers + *num_buffers;
> + sess->num_dst_bufs = q_num_bufs + *num_buffers;
> q->min_buffers_needed = max(fmt_out->min_buffers, sess->num_dst_bufs);
> }
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 33/56] touchscreen: sur40: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 11:19 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:19 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Dmitry Torokhov
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/input/touchscreen/sur40.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c
> index 8ddb3f7d307a..e7d2a52169a0 100644
> --- a/drivers/input/touchscreen/sur40.c
> +++ b/drivers/input/touchscreen/sur40.c
> @@ -847,9 +847,10 @@ static int sur40_queue_setup(struct vb2_queue *q,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct sur40_state *sur40 = vb2_get_drv_priv(q);
> + unsigned int q_num_bufs = vb2_get_num_buffers(q);
>
> - if (q->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - q->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes)
> return sizes[0] < sur40->pix_fmt.sizeimage ? -EINVAL : 0;
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 33/56] touchscreen: sur40: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:19 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:19 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Dmitry Torokhov
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/input/touchscreen/sur40.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c
> index 8ddb3f7d307a..e7d2a52169a0 100644
> --- a/drivers/input/touchscreen/sur40.c
> +++ b/drivers/input/touchscreen/sur40.c
> @@ -847,9 +847,10 @@ static int sur40_queue_setup(struct vb2_queue *q,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct sur40_state *sur40 = vb2_get_drv_priv(q);
> + unsigned int q_num_bufs = vb2_get_num_buffers(q);
>
> - if (q->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - q->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes)
> return sizes[0] < sur40->pix_fmt.sizeimage ? -EINVAL : 0;
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 33/56] touchscreen: sur40: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:19 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:19 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Dmitry Torokhov
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/input/touchscreen/sur40.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c
> index 8ddb3f7d307a..e7d2a52169a0 100644
> --- a/drivers/input/touchscreen/sur40.c
> +++ b/drivers/input/touchscreen/sur40.c
> @@ -847,9 +847,10 @@ static int sur40_queue_setup(struct vb2_queue *q,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct sur40_state *sur40 = vb2_get_drv_priv(q);
> + unsigned int q_num_bufs = vb2_get_num_buffers(q);
>
> - if (q->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - q->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes)
> return sizes[0] < sur40->pix_fmt.sizeimage ? -EINVAL : 0;
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 34/56] sample: v4l: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 11:19 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:19 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> samples/v4l/v4l2-pci-skeleton.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/samples/v4l/v4l2-pci-skeleton.c b/samples/v4l/v4l2-pci-skeleton.c
> index a61f94db18d9..a65aa9d1e9da 100644
> --- a/samples/v4l/v4l2-pci-skeleton.c
> +++ b/samples/v4l/v4l2-pci-skeleton.c
> @@ -155,6 +155,7 @@ static int queue_setup(struct vb2_queue *vq,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct skeleton *skel = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> skel->field = skel->format.field;
> if (skel->field == V4L2_FIELD_ALTERNATE) {
> @@ -167,8 +168,8 @@ static int queue_setup(struct vb2_queue *vq,
> skel->field = V4L2_FIELD_TOP;
> }
>
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes)
> return sizes[0] < skel->format.sizeimage ? -EINVAL : 0;
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 34/56] sample: v4l: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:19 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:19 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> samples/v4l/v4l2-pci-skeleton.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/samples/v4l/v4l2-pci-skeleton.c b/samples/v4l/v4l2-pci-skeleton.c
> index a61f94db18d9..a65aa9d1e9da 100644
> --- a/samples/v4l/v4l2-pci-skeleton.c
> +++ b/samples/v4l/v4l2-pci-skeleton.c
> @@ -155,6 +155,7 @@ static int queue_setup(struct vb2_queue *vq,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct skeleton *skel = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> skel->field = skel->format.field;
> if (skel->field == V4L2_FIELD_ALTERNATE) {
> @@ -167,8 +168,8 @@ static int queue_setup(struct vb2_queue *vq,
> skel->field = V4L2_FIELD_TOP;
> }
>
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes)
> return sizes[0] < skel->format.sizeimage ? -EINVAL : 0;
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 34/56] sample: v4l: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:19 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:19 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> samples/v4l/v4l2-pci-skeleton.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/samples/v4l/v4l2-pci-skeleton.c b/samples/v4l/v4l2-pci-skeleton.c
> index a61f94db18d9..a65aa9d1e9da 100644
> --- a/samples/v4l/v4l2-pci-skeleton.c
> +++ b/samples/v4l/v4l2-pci-skeleton.c
> @@ -155,6 +155,7 @@ static int queue_setup(struct vb2_queue *vq,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct skeleton *skel = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> skel->field = skel->format.field;
> if (skel->field == V4L2_FIELD_ALTERNATE) {
> @@ -167,8 +168,8 @@ static int queue_setup(struct vb2_queue *vq,
> skel->field = V4L2_FIELD_TOP;
> }
>
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes)
> return sizes[0] < skel->format.sizeimage ? -EINVAL : 0;
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 11:27 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:27 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Paul Kocialkowski, Maxime Ripard
Hi Paul,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Given you've alaredy A-b, would you be ok with adding this sentence:
"While at it, check the return value of vb2_get_buffer()."
to the commit message body?
@Benjamin:
With this change, you can add my
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Maxime Ripard <mripard@kernel.org>
> ---
> drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
> drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
> 2 files changed, 14 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> index dfb401df138a..3e2843ef6cce 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> @@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct cedrus_ctx *ctx)
>
> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
>
> - for (i = 0; i < vq->num_buffers; i++) {
> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> +
> + if (!vb)
> + continue;
> +
> + buf = vb2_to_cedrus_buffer(vb);
>
> if (buf->codec.h264.mv_col_buf_size > 0) {
> dma_free_attrs(dev->dev,
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> index fc9297232456..52e94c8f2f01 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> @@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct cedrus_ctx *ctx)
>
> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
>
> - for (i = 0; i < vq->num_buffers; i++) {
> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> +
> + if (!vb)
> + continue;
> +
> + buf = vb2_to_cedrus_buffer(vb);
>
> if (buf->codec.h265.mv_col_buf_size > 0) {
> dma_free_attrs(dev->dev,
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:27 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:27 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Paul Kocialkowski, Maxime Ripard
Hi Paul,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Given you've alaredy A-b, would you be ok with adding this sentence:
"While at it, check the return value of vb2_get_buffer()."
to the commit message body?
@Benjamin:
With this change, you can add my
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Maxime Ripard <mripard@kernel.org>
> ---
> drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
> drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
> 2 files changed, 14 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> index dfb401df138a..3e2843ef6cce 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> @@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct cedrus_ctx *ctx)
>
> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
>
> - for (i = 0; i < vq->num_buffers; i++) {
> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> +
> + if (!vb)
> + continue;
> +
> + buf = vb2_to_cedrus_buffer(vb);
>
> if (buf->codec.h264.mv_col_buf_size > 0) {
> dma_free_attrs(dev->dev,
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> index fc9297232456..52e94c8f2f01 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> @@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct cedrus_ctx *ctx)
>
> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
>
> - for (i = 0; i < vq->num_buffers; i++) {
> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> +
> + if (!vb)
> + continue;
> +
> + buf = vb2_to_cedrus_buffer(vb);
>
> if (buf->codec.h265.mv_col_buf_size > 0) {
> dma_free_attrs(dev->dev,
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:27 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:27 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Paul Kocialkowski, Maxime Ripard
Hi Paul,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Given you've alaredy A-b, would you be ok with adding this sentence:
"While at it, check the return value of vb2_get_buffer()."
to the commit message body?
@Benjamin:
With this change, you can add my
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Maxime Ripard <mripard@kernel.org>
> ---
> drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
> drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
> 2 files changed, 14 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> index dfb401df138a..3e2843ef6cce 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> @@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct cedrus_ctx *ctx)
>
> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
>
> - for (i = 0; i < vq->num_buffers; i++) {
> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> +
> + if (!vb)
> + continue;
> +
> + buf = vb2_to_cedrus_buffer(vb);
>
> if (buf->codec.h264.mv_col_buf_size > 0) {
> dma_free_attrs(dev->dev,
> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> index fc9297232456..52e94c8f2f01 100644
> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> @@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct cedrus_ctx *ctx)
>
> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
>
> - for (i = 0; i < vq->num_buffers; i++) {
> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> +
> + if (!vb)
> + continue;
> +
> + buf = vb2_to_cedrus_buffer(vb);
>
> if (buf->codec.h265.mv_col_buf_size > 0) {
> dma_free_attrs(dev->dev,
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 36/56] media: nuvoton: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 11:29 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:29 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Joseph Liu,
Marvin Lin
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Joseph Liu <kwliu@nuvoton.com>
> CC: Marvin Lin <kflin@nuvoton.com>
> ---
> drivers/media/platform/nuvoton/npcm-video.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/nuvoton/npcm-video.c b/drivers/media/platform/nuvoton/npcm-video.c
> index b9e6782f59b4..f9b4e36a5175 100644
> --- a/drivers/media/platform/nuvoton/npcm-video.c
> +++ b/drivers/media/platform/nuvoton/npcm-video.c
> @@ -393,7 +393,7 @@ static void npcm_video_free_diff_table(struct npcm_video *video)
> struct rect_list *tmp;
> unsigned int i;
>
> - for (i = 0; i < video->queue.num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(&video->queue); i++) {
> head = &video->list[i];
> list_for_each_safe(pos, nx, head) {
> tmp = list_entry(pos, struct rect_list, list);
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 36/56] media: nuvoton: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:29 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:29 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Joseph Liu,
Marvin Lin
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Joseph Liu <kwliu@nuvoton.com>
> CC: Marvin Lin <kflin@nuvoton.com>
> ---
> drivers/media/platform/nuvoton/npcm-video.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/nuvoton/npcm-video.c b/drivers/media/platform/nuvoton/npcm-video.c
> index b9e6782f59b4..f9b4e36a5175 100644
> --- a/drivers/media/platform/nuvoton/npcm-video.c
> +++ b/drivers/media/platform/nuvoton/npcm-video.c
> @@ -393,7 +393,7 @@ static void npcm_video_free_diff_table(struct npcm_video *video)
> struct rect_list *tmp;
> unsigned int i;
>
> - for (i = 0; i < video->queue.num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(&video->queue); i++) {
> head = &video->list[i];
> list_for_each_safe(pos, nx, head) {
> tmp = list_entry(pos, struct rect_list, list);
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 36/56] media: nuvoton: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:29 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:29 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Joseph Liu,
Marvin Lin
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Joseph Liu <kwliu@nuvoton.com>
> CC: Marvin Lin <kflin@nuvoton.com>
> ---
> drivers/media/platform/nuvoton/npcm-video.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/media/platform/nuvoton/npcm-video.c b/drivers/media/platform/nuvoton/npcm-video.c
> index b9e6782f59b4..f9b4e36a5175 100644
> --- a/drivers/media/platform/nuvoton/npcm-video.c
> +++ b/drivers/media/platform/nuvoton/npcm-video.c
> @@ -393,7 +393,7 @@ static void npcm_video_free_diff_table(struct npcm_video *video)
> struct rect_list *tmp;
> unsigned int i;
>
> - for (i = 0; i < video->queue.num_buffers; i++) {
> + for (i = 0; i < vb2_get_num_buffers(&video->queue); i++) {
> head = &video->list[i];
> list_for_each_safe(pos, nx, head) {
> tmp = list_entry(pos, struct rect_list, list);
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 37/56] media: renesas: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 11:30 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:30 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Fabrizio Castro
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
> ---
> drivers/media/platform/renesas/rcar_drif.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/platform/renesas/rcar_drif.c b/drivers/media/platform/renesas/rcar_drif.c
> index 292c5bf9e50c..f21d05054341 100644
> --- a/drivers/media/platform/renesas/rcar_drif.c
> +++ b/drivers/media/platform/renesas/rcar_drif.c
> @@ -424,10 +424,11 @@ static int rcar_drif_queue_setup(struct vb2_queue *vq,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct rcar_drif_sdr *sdr = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> /* Need at least 16 buffers */
> - if (vq->num_buffers + *num_buffers < 16)
> - *num_buffers = 16 - vq->num_buffers;
> + if (q_num_bufs + *num_buffers < 16)
> + *num_buffers = 16 - q_num_bufs;
>
> *num_planes = 1;
> sizes[0] = PAGE_ALIGN(sdr->fmt->buffersize);
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 37/56] media: renesas: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:30 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:30 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Fabrizio Castro
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
> ---
> drivers/media/platform/renesas/rcar_drif.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/platform/renesas/rcar_drif.c b/drivers/media/platform/renesas/rcar_drif.c
> index 292c5bf9e50c..f21d05054341 100644
> --- a/drivers/media/platform/renesas/rcar_drif.c
> +++ b/drivers/media/platform/renesas/rcar_drif.c
> @@ -424,10 +424,11 @@ static int rcar_drif_queue_setup(struct vb2_queue *vq,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct rcar_drif_sdr *sdr = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> /* Need at least 16 buffers */
> - if (vq->num_buffers + *num_buffers < 16)
> - *num_buffers = 16 - vq->num_buffers;
> + if (q_num_bufs + *num_buffers < 16)
> + *num_buffers = 16 - q_num_bufs;
>
> *num_planes = 1;
> sizes[0] = PAGE_ALIGN(sdr->fmt->buffersize);
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 37/56] media: renesas: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:30 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:30 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Fabrizio Castro
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Fabrizio Castro <fabrizio.castro.jz@renesas.com>
> ---
> drivers/media/platform/renesas/rcar_drif.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/platform/renesas/rcar_drif.c b/drivers/media/platform/renesas/rcar_drif.c
> index 292c5bf9e50c..f21d05054341 100644
> --- a/drivers/media/platform/renesas/rcar_drif.c
> +++ b/drivers/media/platform/renesas/rcar_drif.c
> @@ -424,10 +424,11 @@ static int rcar_drif_queue_setup(struct vb2_queue *vq,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct rcar_drif_sdr *sdr = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> /* Need at least 16 buffers */
> - if (vq->num_buffers + *num_buffers < 16)
> - *num_buffers = 16 - vq->num_buffers;
> + if (q_num_bufs + *num_buffers < 16)
> + *num_buffers = 16 - q_num_bufs;
>
> *num_planes = 1;
> sizes[0] = PAGE_ALIGN(sdr->fmt->buffersize);
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 38/56] media: ti: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 11:32 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:32 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Lad,
Prabhakar
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
> ---
> drivers/media/platform/ti/am437x/am437x-vpfe.c | 5 +++--
> drivers/media/platform/ti/cal/cal-video.c | 5 +++--
> drivers/media/platform/ti/davinci/vpif_capture.c | 5 +++--
> drivers/media/platform/ti/davinci/vpif_display.c | 5 +++--
> drivers/media/platform/ti/omap/omap_vout.c | 5 +++--
> 5 files changed, 15 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/media/platform/ti/am437x/am437x-vpfe.c b/drivers/media/platform/ti/am437x/am437x-vpfe.c
> index 5fa2ea9025d9..f18acf9286a2 100644
> --- a/drivers/media/platform/ti/am437x/am437x-vpfe.c
> +++ b/drivers/media/platform/ti/am437x/am437x-vpfe.c
> @@ -1771,9 +1771,10 @@ static int vpfe_queue_setup(struct vb2_queue *vq,
> {
> struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
> unsigned size = vpfe->fmt.fmt.pix.sizeimage;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes) {
> if (sizes[0] < size)
> diff --git a/drivers/media/platform/ti/cal/cal-video.c b/drivers/media/platform/ti/cal/cal-video.c
> index a8abcd0fee17..94e67c057a20 100644
> --- a/drivers/media/platform/ti/cal/cal-video.c
> +++ b/drivers/media/platform/ti/cal/cal-video.c
> @@ -603,9 +603,10 @@ static int cal_queue_setup(struct vb2_queue *vq,
> {
> struct cal_ctx *ctx = vb2_get_drv_priv(vq);
> unsigned int size = ctx->v_fmt.fmt.pix.sizeimage;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes) {
> if (sizes[0] < size)
> diff --git a/drivers/media/platform/ti/davinci/vpif_capture.c b/drivers/media/platform/ti/davinci/vpif_capture.c
> index 99fae8830c41..fc42b4bc37e6 100644
> --- a/drivers/media/platform/ti/davinci/vpif_capture.c
> +++ b/drivers/media/platform/ti/davinci/vpif_capture.c
> @@ -113,6 +113,7 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
> struct channel_obj *ch = vb2_get_drv_priv(vq);
> struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
> unsigned size = common->fmt.fmt.pix.sizeimage;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> vpif_dbg(2, debug, "vpif_buffer_setup\n");
>
> @@ -122,8 +123,8 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
> size = sizes[0];
> }
>
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> *nplanes = 1;
> sizes[0] = size;
> diff --git a/drivers/media/platform/ti/davinci/vpif_display.c b/drivers/media/platform/ti/davinci/vpif_display.c
> index f8ec2991c667..9dbab1003c1d 100644
> --- a/drivers/media/platform/ti/davinci/vpif_display.c
> +++ b/drivers/media/platform/ti/davinci/vpif_display.c
> @@ -115,6 +115,7 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
> struct channel_obj *ch = vb2_get_drv_priv(vq);
> struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
> unsigned size = common->fmt.fmt.pix.sizeimage;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> if (*nplanes) {
> if (sizes[0] < size)
> @@ -122,8 +123,8 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
> size = sizes[0];
> }
>
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> *nplanes = 1;
> sizes[0] = size;
> diff --git a/drivers/media/platform/ti/omap/omap_vout.c b/drivers/media/platform/ti/omap/omap_vout.c
> index 4143274089c3..72ce903717d3 100644
> --- a/drivers/media/platform/ti/omap/omap_vout.c
> +++ b/drivers/media/platform/ti/omap/omap_vout.c
> @@ -944,10 +944,11 @@ static int omap_vout_vb2_queue_setup(struct vb2_queue *vq,
> struct device *alloc_devs[])
> {
> struct omap_vout_device *vout = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> int size = vout->pix.sizeimage;
>
> - if (is_rotation_enabled(vout) && vq->num_buffers + *nbufs > VRFB_NUM_BUFS) {
> - *nbufs = VRFB_NUM_BUFS - vq->num_buffers;
> + if (is_rotation_enabled(vout) && q_num_bufs + *nbufs > VRFB_NUM_BUFS) {
> + *nbufs = VRFB_NUM_BUFS - q_num_bufs;
> if (*nbufs == 0)
> return -EINVAL;
> }
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 38/56] media: ti: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:32 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:32 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Lad,
Prabhakar
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
> ---
> drivers/media/platform/ti/am437x/am437x-vpfe.c | 5 +++--
> drivers/media/platform/ti/cal/cal-video.c | 5 +++--
> drivers/media/platform/ti/davinci/vpif_capture.c | 5 +++--
> drivers/media/platform/ti/davinci/vpif_display.c | 5 +++--
> drivers/media/platform/ti/omap/omap_vout.c | 5 +++--
> 5 files changed, 15 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/media/platform/ti/am437x/am437x-vpfe.c b/drivers/media/platform/ti/am437x/am437x-vpfe.c
> index 5fa2ea9025d9..f18acf9286a2 100644
> --- a/drivers/media/platform/ti/am437x/am437x-vpfe.c
> +++ b/drivers/media/platform/ti/am437x/am437x-vpfe.c
> @@ -1771,9 +1771,10 @@ static int vpfe_queue_setup(struct vb2_queue *vq,
> {
> struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
> unsigned size = vpfe->fmt.fmt.pix.sizeimage;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes) {
> if (sizes[0] < size)
> diff --git a/drivers/media/platform/ti/cal/cal-video.c b/drivers/media/platform/ti/cal/cal-video.c
> index a8abcd0fee17..94e67c057a20 100644
> --- a/drivers/media/platform/ti/cal/cal-video.c
> +++ b/drivers/media/platform/ti/cal/cal-video.c
> @@ -603,9 +603,10 @@ static int cal_queue_setup(struct vb2_queue *vq,
> {
> struct cal_ctx *ctx = vb2_get_drv_priv(vq);
> unsigned int size = ctx->v_fmt.fmt.pix.sizeimage;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes) {
> if (sizes[0] < size)
> diff --git a/drivers/media/platform/ti/davinci/vpif_capture.c b/drivers/media/platform/ti/davinci/vpif_capture.c
> index 99fae8830c41..fc42b4bc37e6 100644
> --- a/drivers/media/platform/ti/davinci/vpif_capture.c
> +++ b/drivers/media/platform/ti/davinci/vpif_capture.c
> @@ -113,6 +113,7 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
> struct channel_obj *ch = vb2_get_drv_priv(vq);
> struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
> unsigned size = common->fmt.fmt.pix.sizeimage;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> vpif_dbg(2, debug, "vpif_buffer_setup\n");
>
> @@ -122,8 +123,8 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
> size = sizes[0];
> }
>
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> *nplanes = 1;
> sizes[0] = size;
> diff --git a/drivers/media/platform/ti/davinci/vpif_display.c b/drivers/media/platform/ti/davinci/vpif_display.c
> index f8ec2991c667..9dbab1003c1d 100644
> --- a/drivers/media/platform/ti/davinci/vpif_display.c
> +++ b/drivers/media/platform/ti/davinci/vpif_display.c
> @@ -115,6 +115,7 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
> struct channel_obj *ch = vb2_get_drv_priv(vq);
> struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
> unsigned size = common->fmt.fmt.pix.sizeimage;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> if (*nplanes) {
> if (sizes[0] < size)
> @@ -122,8 +123,8 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
> size = sizes[0];
> }
>
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> *nplanes = 1;
> sizes[0] = size;
> diff --git a/drivers/media/platform/ti/omap/omap_vout.c b/drivers/media/platform/ti/omap/omap_vout.c
> index 4143274089c3..72ce903717d3 100644
> --- a/drivers/media/platform/ti/omap/omap_vout.c
> +++ b/drivers/media/platform/ti/omap/omap_vout.c
> @@ -944,10 +944,11 @@ static int omap_vout_vb2_queue_setup(struct vb2_queue *vq,
> struct device *alloc_devs[])
> {
> struct omap_vout_device *vout = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> int size = vout->pix.sizeimage;
>
> - if (is_rotation_enabled(vout) && vq->num_buffers + *nbufs > VRFB_NUM_BUFS) {
> - *nbufs = VRFB_NUM_BUFS - vq->num_buffers;
> + if (is_rotation_enabled(vout) && q_num_bufs + *nbufs > VRFB_NUM_BUFS) {
> + *nbufs = VRFB_NUM_BUFS - q_num_bufs;
> if (*nbufs == 0)
> return -EINVAL;
> }
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 38/56] media: ti: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:32 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:32 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel, Lad,
Prabhakar
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
> ---
> drivers/media/platform/ti/am437x/am437x-vpfe.c | 5 +++--
> drivers/media/platform/ti/cal/cal-video.c | 5 +++--
> drivers/media/platform/ti/davinci/vpif_capture.c | 5 +++--
> drivers/media/platform/ti/davinci/vpif_display.c | 5 +++--
> drivers/media/platform/ti/omap/omap_vout.c | 5 +++--
> 5 files changed, 15 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/media/platform/ti/am437x/am437x-vpfe.c b/drivers/media/platform/ti/am437x/am437x-vpfe.c
> index 5fa2ea9025d9..f18acf9286a2 100644
> --- a/drivers/media/platform/ti/am437x/am437x-vpfe.c
> +++ b/drivers/media/platform/ti/am437x/am437x-vpfe.c
> @@ -1771,9 +1771,10 @@ static int vpfe_queue_setup(struct vb2_queue *vq,
> {
> struct vpfe_device *vpfe = vb2_get_drv_priv(vq);
> unsigned size = vpfe->fmt.fmt.pix.sizeimage;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes) {
> if (sizes[0] < size)
> diff --git a/drivers/media/platform/ti/cal/cal-video.c b/drivers/media/platform/ti/cal/cal-video.c
> index a8abcd0fee17..94e67c057a20 100644
> --- a/drivers/media/platform/ti/cal/cal-video.c
> +++ b/drivers/media/platform/ti/cal/cal-video.c
> @@ -603,9 +603,10 @@ static int cal_queue_setup(struct vb2_queue *vq,
> {
> struct cal_ctx *ctx = vb2_get_drv_priv(vq);
> unsigned int size = ctx->v_fmt.fmt.pix.sizeimage;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> if (*nplanes) {
> if (sizes[0] < size)
> diff --git a/drivers/media/platform/ti/davinci/vpif_capture.c b/drivers/media/platform/ti/davinci/vpif_capture.c
> index 99fae8830c41..fc42b4bc37e6 100644
> --- a/drivers/media/platform/ti/davinci/vpif_capture.c
> +++ b/drivers/media/platform/ti/davinci/vpif_capture.c
> @@ -113,6 +113,7 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
> struct channel_obj *ch = vb2_get_drv_priv(vq);
> struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
> unsigned size = common->fmt.fmt.pix.sizeimage;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> vpif_dbg(2, debug, "vpif_buffer_setup\n");
>
> @@ -122,8 +123,8 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
> size = sizes[0];
> }
>
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> *nplanes = 1;
> sizes[0] = size;
> diff --git a/drivers/media/platform/ti/davinci/vpif_display.c b/drivers/media/platform/ti/davinci/vpif_display.c
> index f8ec2991c667..9dbab1003c1d 100644
> --- a/drivers/media/platform/ti/davinci/vpif_display.c
> +++ b/drivers/media/platform/ti/davinci/vpif_display.c
> @@ -115,6 +115,7 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
> struct channel_obj *ch = vb2_get_drv_priv(vq);
> struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
> unsigned size = common->fmt.fmt.pix.sizeimage;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> if (*nplanes) {
> if (sizes[0] < size)
> @@ -122,8 +123,8 @@ static int vpif_buffer_queue_setup(struct vb2_queue *vq,
> size = sizes[0];
> }
>
> - if (vq->num_buffers + *nbuffers < 3)
> - *nbuffers = 3 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 3)
> + *nbuffers = 3 - q_num_bufs;
>
> *nplanes = 1;
> sizes[0] = size;
> diff --git a/drivers/media/platform/ti/omap/omap_vout.c b/drivers/media/platform/ti/omap/omap_vout.c
> index 4143274089c3..72ce903717d3 100644
> --- a/drivers/media/platform/ti/omap/omap_vout.c
> +++ b/drivers/media/platform/ti/omap/omap_vout.c
> @@ -944,10 +944,11 @@ static int omap_vout_vb2_queue_setup(struct vb2_queue *vq,
> struct device *alloc_devs[])
> {
> struct omap_vout_device *vout = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
> int size = vout->pix.sizeimage;
>
> - if (is_rotation_enabled(vout) && vq->num_buffers + *nbufs > VRFB_NUM_BUFS) {
> - *nbufs = VRFB_NUM_BUFS - vq->num_buffers;
> + if (is_rotation_enabled(vout) && q_num_bufs + *nbufs > VRFB_NUM_BUFS) {
> + *nbufs = VRFB_NUM_BUFS - q_num_bufs;
> if (*nbufs == 0)
> return -EINVAL;
> }
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 39/56] media: usb: airspy: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 11:33 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:33 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/usb/airspy/airspy.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/usb/airspy/airspy.c b/drivers/media/usb/airspy/airspy.c
> index 462eb8423506..e24e655fb1db 100644
> --- a/drivers/media/usb/airspy/airspy.c
> +++ b/drivers/media/usb/airspy/airspy.c
> @@ -482,12 +482,13 @@ static int airspy_queue_setup(struct vb2_queue *vq,
> unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[])
> {
> struct airspy *s = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev_dbg(s->dev, "nbuffers=%d\n", *nbuffers);
>
> /* Need at least 8 buffers */
> - if (vq->num_buffers + *nbuffers < 8)
> - *nbuffers = 8 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 8)
> + *nbuffers = 8 - q_num_bufs;
> *nplanes = 1;
> sizes[0] = PAGE_ALIGN(s->buffersize);
>
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 39/56] media: usb: airspy: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:33 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:33 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/usb/airspy/airspy.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/usb/airspy/airspy.c b/drivers/media/usb/airspy/airspy.c
> index 462eb8423506..e24e655fb1db 100644
> --- a/drivers/media/usb/airspy/airspy.c
> +++ b/drivers/media/usb/airspy/airspy.c
> @@ -482,12 +482,13 @@ static int airspy_queue_setup(struct vb2_queue *vq,
> unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[])
> {
> struct airspy *s = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev_dbg(s->dev, "nbuffers=%d\n", *nbuffers);
>
> /* Need at least 8 buffers */
> - if (vq->num_buffers + *nbuffers < 8)
> - *nbuffers = 8 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 8)
> + *nbuffers = 8 - q_num_bufs;
> *nplanes = 1;
> sizes[0] = PAGE_ALIGN(s->buffersize);
>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 39/56] media: usb: airspy: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:33 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:33 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/usb/airspy/airspy.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/usb/airspy/airspy.c b/drivers/media/usb/airspy/airspy.c
> index 462eb8423506..e24e655fb1db 100644
> --- a/drivers/media/usb/airspy/airspy.c
> +++ b/drivers/media/usb/airspy/airspy.c
> @@ -482,12 +482,13 @@ static int airspy_queue_setup(struct vb2_queue *vq,
> unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[])
> {
> struct airspy *s = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev_dbg(s->dev, "nbuffers=%d\n", *nbuffers);
>
> /* Need at least 8 buffers */
> - if (vq->num_buffers + *nbuffers < 8)
> - *nbuffers = 8 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 8)
> + *nbuffers = 8 - q_num_bufs;
> *nplanes = 1;
> sizes[0] = PAGE_ALIGN(s->buffersize);
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 40/56] media: usb: cx231xx: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 11:35 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:35 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/usb/cx231xx/cx231xx-417.c | 5 +++--
> drivers/media/usb/cx231xx/cx231xx-video.c | 5 +++--
> 2 files changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/usb/cx231xx/cx231xx-417.c b/drivers/media/usb/cx231xx/cx231xx-417.c
> index fe4410a5e128..45973fe690b2 100644
> --- a/drivers/media/usb/cx231xx/cx231xx-417.c
> +++ b/drivers/media/usb/cx231xx/cx231xx-417.c
> @@ -1218,12 +1218,13 @@ static int queue_setup(struct vb2_queue *vq,
> {
> struct cx231xx *dev = vb2_get_drv_priv(vq);
> unsigned int size = mpeglinesize * mpeglines;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev->ts1.ts_packet_size = mpeglinesize;
> dev->ts1.ts_packet_count = mpeglines;
>
> - if (vq->num_buffers + *nbuffers < CX231XX_MIN_BUF)
> - *nbuffers = CX231XX_MIN_BUF - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < CX231XX_MIN_BUF)
> + *nbuffers = CX231XX_MIN_BUF - q_num_bufs;
>
> if (*nplanes)
> return sizes[0] < size ? -EINVAL : 0;
> diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c
> index e23b8ccd79d4..c8eb4222319d 100644
> --- a/drivers/media/usb/cx231xx/cx231xx-video.c
> +++ b/drivers/media/usb/cx231xx/cx231xx-video.c
> @@ -714,11 +714,12 @@ static int queue_setup(struct vb2_queue *vq,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct cx231xx *dev = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev->size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
>
> - if (vq->num_buffers + *nbuffers < CX231XX_MIN_BUF)
> - *nbuffers = CX231XX_MIN_BUF - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < CX231XX_MIN_BUF)
> + *nbuffers = CX231XX_MIN_BUF - q_num_bufs;
>
> if (*nplanes)
> return sizes[0] < dev->size ? -EINVAL : 0;
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 40/56] media: usb: cx231xx: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:35 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:35 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/usb/cx231xx/cx231xx-417.c | 5 +++--
> drivers/media/usb/cx231xx/cx231xx-video.c | 5 +++--
> 2 files changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/usb/cx231xx/cx231xx-417.c b/drivers/media/usb/cx231xx/cx231xx-417.c
> index fe4410a5e128..45973fe690b2 100644
> --- a/drivers/media/usb/cx231xx/cx231xx-417.c
> +++ b/drivers/media/usb/cx231xx/cx231xx-417.c
> @@ -1218,12 +1218,13 @@ static int queue_setup(struct vb2_queue *vq,
> {
> struct cx231xx *dev = vb2_get_drv_priv(vq);
> unsigned int size = mpeglinesize * mpeglines;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev->ts1.ts_packet_size = mpeglinesize;
> dev->ts1.ts_packet_count = mpeglines;
>
> - if (vq->num_buffers + *nbuffers < CX231XX_MIN_BUF)
> - *nbuffers = CX231XX_MIN_BUF - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < CX231XX_MIN_BUF)
> + *nbuffers = CX231XX_MIN_BUF - q_num_bufs;
>
> if (*nplanes)
> return sizes[0] < size ? -EINVAL : 0;
> diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c
> index e23b8ccd79d4..c8eb4222319d 100644
> --- a/drivers/media/usb/cx231xx/cx231xx-video.c
> +++ b/drivers/media/usb/cx231xx/cx231xx-video.c
> @@ -714,11 +714,12 @@ static int queue_setup(struct vb2_queue *vq,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct cx231xx *dev = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev->size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
>
> - if (vq->num_buffers + *nbuffers < CX231XX_MIN_BUF)
> - *nbuffers = CX231XX_MIN_BUF - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < CX231XX_MIN_BUF)
> + *nbuffers = CX231XX_MIN_BUF - q_num_bufs;
>
> if (*nplanes)
> return sizes[0] < dev->size ? -EINVAL : 0;
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 40/56] media: usb: cx231xx: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:35 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:35 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/usb/cx231xx/cx231xx-417.c | 5 +++--
> drivers/media/usb/cx231xx/cx231xx-video.c | 5 +++--
> 2 files changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/media/usb/cx231xx/cx231xx-417.c b/drivers/media/usb/cx231xx/cx231xx-417.c
> index fe4410a5e128..45973fe690b2 100644
> --- a/drivers/media/usb/cx231xx/cx231xx-417.c
> +++ b/drivers/media/usb/cx231xx/cx231xx-417.c
> @@ -1218,12 +1218,13 @@ static int queue_setup(struct vb2_queue *vq,
> {
> struct cx231xx *dev = vb2_get_drv_priv(vq);
> unsigned int size = mpeglinesize * mpeglines;
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev->ts1.ts_packet_size = mpeglinesize;
> dev->ts1.ts_packet_count = mpeglines;
>
> - if (vq->num_buffers + *nbuffers < CX231XX_MIN_BUF)
> - *nbuffers = CX231XX_MIN_BUF - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < CX231XX_MIN_BUF)
> + *nbuffers = CX231XX_MIN_BUF - q_num_bufs;
>
> if (*nplanes)
> return sizes[0] < size ? -EINVAL : 0;
> diff --git a/drivers/media/usb/cx231xx/cx231xx-video.c b/drivers/media/usb/cx231xx/cx231xx-video.c
> index e23b8ccd79d4..c8eb4222319d 100644
> --- a/drivers/media/usb/cx231xx/cx231xx-video.c
> +++ b/drivers/media/usb/cx231xx/cx231xx-video.c
> @@ -714,11 +714,12 @@ static int queue_setup(struct vb2_queue *vq,
> unsigned int sizes[], struct device *alloc_devs[])
> {
> struct cx231xx *dev = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev->size = (dev->width * dev->height * dev->format->depth + 7) >> 3;
>
> - if (vq->num_buffers + *nbuffers < CX231XX_MIN_BUF)
> - *nbuffers = CX231XX_MIN_BUF - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < CX231XX_MIN_BUF)
> + *nbuffers = CX231XX_MIN_BUF - q_num_bufs;
>
> if (*nplanes)
> return sizes[0] < dev->size ? -EINVAL : 0;
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 41/56] media: usb: hackrf: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 11:36 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:36 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Antti Palosaari
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Antti Palosaari <crope@iki.fi>
> ---
> drivers/media/usb/hackrf/hackrf.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/usb/hackrf/hackrf.c b/drivers/media/usb/hackrf/hackrf.c
> index 3e535be2c520..9c0ecd5f056c 100644
> --- a/drivers/media/usb/hackrf/hackrf.c
> +++ b/drivers/media/usb/hackrf/hackrf.c
> @@ -753,12 +753,13 @@ static int hackrf_queue_setup(struct vb2_queue *vq,
> unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[])
> {
> struct hackrf_dev *dev = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev_dbg(dev->dev, "nbuffers=%d\n", *nbuffers);
>
> /* Need at least 8 buffers */
> - if (vq->num_buffers + *nbuffers < 8)
> - *nbuffers = 8 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 8)
> + *nbuffers = 8 - q_num_bufs;
> *nplanes = 1;
> sizes[0] = PAGE_ALIGN(dev->buffersize);
>
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 41/56] media: usb: hackrf: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:36 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:36 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Antti Palosaari
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Antti Palosaari <crope@iki.fi>
> ---
> drivers/media/usb/hackrf/hackrf.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/usb/hackrf/hackrf.c b/drivers/media/usb/hackrf/hackrf.c
> index 3e535be2c520..9c0ecd5f056c 100644
> --- a/drivers/media/usb/hackrf/hackrf.c
> +++ b/drivers/media/usb/hackrf/hackrf.c
> @@ -753,12 +753,13 @@ static int hackrf_queue_setup(struct vb2_queue *vq,
> unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[])
> {
> struct hackrf_dev *dev = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev_dbg(dev->dev, "nbuffers=%d\n", *nbuffers);
>
> /* Need at least 8 buffers */
> - if (vq->num_buffers + *nbuffers < 8)
> - *nbuffers = 8 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 8)
> + *nbuffers = 8 - q_num_bufs;
> *nplanes = 1;
> sizes[0] = PAGE_ALIGN(dev->buffersize);
>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 41/56] media: usb: hackrf: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:36 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:36 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Antti Palosaari
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Antti Palosaari <crope@iki.fi>
> ---
> drivers/media/usb/hackrf/hackrf.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/usb/hackrf/hackrf.c b/drivers/media/usb/hackrf/hackrf.c
> index 3e535be2c520..9c0ecd5f056c 100644
> --- a/drivers/media/usb/hackrf/hackrf.c
> +++ b/drivers/media/usb/hackrf/hackrf.c
> @@ -753,12 +753,13 @@ static int hackrf_queue_setup(struct vb2_queue *vq,
> unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[])
> {
> struct hackrf_dev *dev = vb2_get_drv_priv(vq);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> dev_dbg(dev->dev, "nbuffers=%d\n", *nbuffers);
>
> /* Need at least 8 buffers */
> - if (vq->num_buffers + *nbuffers < 8)
> - *nbuffers = 8 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 8)
> + *nbuffers = 8 - q_num_bufs;
> *nplanes = 1;
> sizes[0] = PAGE_ALIGN(dev->buffersize);
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 42/56] media: usb: usbtv: Stop direct calls to queue num_buffers field
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 11:37 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:37 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/usb/usbtv/usbtv-video.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/usb/usbtv/usbtv-video.c b/drivers/media/usb/usbtv/usbtv-video.c
> index 1e30e05953dc..62a583040cd4 100644
> --- a/drivers/media/usb/usbtv/usbtv-video.c
> +++ b/drivers/media/usb/usbtv/usbtv-video.c
> @@ -726,9 +726,10 @@ static int usbtv_queue_setup(struct vb2_queue *vq,
> {
> struct usbtv *usbtv = vb2_get_drv_priv(vq);
> unsigned size = USBTV_CHUNK * usbtv->n_chunks * 2 * sizeof(u32);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 2)
> + *nbuffers = 2 - q_num_bufs;
> if (*nplanes)
> return sizes[0] < size ? -EINVAL : 0;
> *nplanes = 1;
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 42/56] media: usb: usbtv: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:37 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:37 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/usb/usbtv/usbtv-video.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/usb/usbtv/usbtv-video.c b/drivers/media/usb/usbtv/usbtv-video.c
> index 1e30e05953dc..62a583040cd4 100644
> --- a/drivers/media/usb/usbtv/usbtv-video.c
> +++ b/drivers/media/usb/usbtv/usbtv-video.c
> @@ -726,9 +726,10 @@ static int usbtv_queue_setup(struct vb2_queue *vq,
> {
> struct usbtv *usbtv = vb2_get_drv_priv(vq);
> unsigned size = USBTV_CHUNK * usbtv->n_chunks * 2 * sizeof(u32);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 2)
> + *nbuffers = 2 - q_num_bufs;
> if (*nplanes)
> return sizes[0] < size ? -EINVAL : 0;
> *nplanes = 1;
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 42/56] media: usb: usbtv: Stop direct calls to queue num_buffers field
@ 2023-11-09 11:37 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 11:37 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> This allows us to change how the number of buffers is computed in the
> future.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/usb/usbtv/usbtv-video.c | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/usb/usbtv/usbtv-video.c b/drivers/media/usb/usbtv/usbtv-video.c
> index 1e30e05953dc..62a583040cd4 100644
> --- a/drivers/media/usb/usbtv/usbtv-video.c
> +++ b/drivers/media/usb/usbtv/usbtv-video.c
> @@ -726,9 +726,10 @@ static int usbtv_queue_setup(struct vb2_queue *vq,
> {
> struct usbtv *usbtv = vb2_get_drv_priv(vq);
> unsigned size = USBTV_CHUNK * usbtv->n_chunks * 2 * sizeof(u32);
> + unsigned int q_num_bufs = vb2_get_num_buffers(vq);
>
> - if (vq->num_buffers + *nbuffers < 2)
> - *nbuffers = 2 - vq->num_buffers;
> + if (q_num_bufs + *nbuffers < 2)
> + *nbuffers = 2 - q_num_bufs;
> if (*nplanes)
> return sizes[0] < size ? -EINVAL : 0;
> *nplanes = 1;
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 44/56] media: core: Report the maximum possible number of buffers for the queue
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 12:28 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 12:28 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use one of the struct v4l2_create_buffers reserved bytes to report
I initially thought you were using literally a single byte, which made
no sense to me given that values much larger than 255 are sometimes going to be
stored there.
Maybe rephrase this to:
Use one element of the struct v4l2_create_buffers "reserved" array to report...
With that you can add my
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> the maximum possible number of buffers for the queue.
> V4l2 framework set V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS flags in queue
> capabilities so userland can know when the field is valid.
> Does the same change in v4l2_create_buffers32 structure.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../userspace-api/media/v4l/vidioc-create-bufs.rst | 8 ++++++--
> Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst | 1 +
> drivers/media/common/videobuf2/videobuf2-v4l2.c | 2 ++
> drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 9 ++++++++-
> drivers/media/v4l2-core/v4l2-ioctl.c | 4 ++--
> include/uapi/linux/videodev2.h | 7 ++++++-
> 6 files changed, 25 insertions(+), 6 deletions(-)
>
> diff --git a/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
> index a048a9f6b7b6..49232c9006c2 100644
> --- a/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
> +++ b/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
> @@ -116,9 +116,13 @@ than the number requested.
> - ``flags``
> - Specifies additional buffer management attributes.
> See :ref:`memory-flags`.
> -
> * - __u32
> - - ``reserved``\ [6]
> + - ``max_num_buffers``
> + - If the V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
> + this field indicates the maximum possible number of buffers
> + for this queue.
> + * - __u32
> + - ``reserved``\ [5]
> - A place holder for future extensions. Drivers and applications
> must set the array to zero.
>
> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> index 099fa6695167..0b3a41a45d05 100644
> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> @@ -120,6 +120,7 @@ aborting or finishing any DMA in progress, an implicit
> .. _V4L2-BUF-CAP-SUPPORTS-ORPHANED-BUFS:
> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
> +.. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
>
> .. raw:: latex
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index f3cf4b235c1f..bdfc3a253c65 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -762,6 +762,8 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
> fill_buf_caps(q, &create->capabilities);
> validate_memory_flags(q, create->memory, &create->flags);
> create->index = vb2_get_num_buffers(q);
> + create->max_num_buffers = q->max_num_buffers;
> + create->capabilities |= V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS;
> if (create->count == 0)
> return ret != -EBUSY ? ret : 0;
>
> diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
> index f3bed37859a2..5aac5cf780b3 100644
> --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
> +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
> @@ -116,6 +116,9 @@ struct v4l2_format32 {
> * @flags: additional buffer management attributes (ignored unless the
> * queue has V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS capability and
> * configured for MMAP streaming I/O).
> + * @max_num_buffers: if V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
> + * this field indicate the maximum possible number of buffers
> + * for this queue.
> * @reserved: future extensions
> */
> struct v4l2_create_buffers32 {
> @@ -125,7 +128,8 @@ struct v4l2_create_buffers32 {
> struct v4l2_format32 format;
> __u32 capabilities;
> __u32 flags;
> - __u32 reserved[6];
> + __u32 max_num_buffers;
> + __u32 reserved[5];
> };
>
> static int get_v4l2_format32(struct v4l2_format *p64,
> @@ -175,6 +179,8 @@ static int get_v4l2_create32(struct v4l2_create_buffers *p64,
> return -EFAULT;
> if (copy_from_user(&p64->flags, &p32->flags, sizeof(p32->flags)))
> return -EFAULT;
> + if (copy_from_user(&p64->max_num_buffers, &p32->max_num_buffers, sizeof(p32->max_num_buffers)))
> + return -EFAULT;
> return get_v4l2_format32(&p64->format, &p32->format);
> }
>
> @@ -221,6 +227,7 @@ static int put_v4l2_create32(struct v4l2_create_buffers *p64,
> offsetof(struct v4l2_create_buffers32, format)) ||
> put_user(p64->capabilities, &p32->capabilities) ||
> put_user(p64->flags, &p32->flags) ||
> + put_user(p64->max_num_buffers, &p32->max_num_buffers) ||
> copy_to_user(p32->reserved, p64->reserved, sizeof(p64->reserved)))
> return -EFAULT;
> return put_v4l2_format32(&p64->format, &p32->format);
> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
> index 9b1de54ce379..4d90424cbfc4 100644
> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> @@ -483,9 +483,9 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
> {
> const struct v4l2_create_buffers *p = arg;
>
> - pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, ",
> + pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, max num buffers=%u",
> p->index, p->count, prt_names(p->memory, v4l2_memory_names),
> - p->capabilities);
> + p->capabilities, p->max_num_buffers);
> v4l_print_format(&p->format, write_only);
> }
>
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index c3d4e490ce7c..13ddb5abf584 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -1035,6 +1035,7 @@ struct v4l2_requestbuffers {
> #define V4L2_BUF_CAP_SUPPORTS_ORPHANED_BUFS (1 << 4)
> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
> +#define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
>
> /**
> * struct v4l2_plane - plane info for multi-planar buffers
> @@ -2605,6 +2606,9 @@ struct v4l2_dbg_chip_info {
> * @flags: additional buffer management attributes (ignored unless the
> * queue has V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS capability
> * and configured for MMAP streaming I/O).
> + * @max_num_buffers: if V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
> + * this field indicate the maximum possible number of buffers
> + * for this queue.
> * @reserved: future extensions
> */
> struct v4l2_create_buffers {
> @@ -2614,7 +2618,8 @@ struct v4l2_create_buffers {
> struct v4l2_format format;
> __u32 capabilities;
> __u32 flags;
> - __u32 reserved[6];
> + __u32 max_num_buffers;
> + __u32 reserved[5];
> };
>
> /*
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 44/56] media: core: Report the maximum possible number of buffers for the queue
@ 2023-11-09 12:28 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 12:28 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use one of the struct v4l2_create_buffers reserved bytes to report
I initially thought you were using literally a single byte, which made
no sense to me given that values much larger than 255 are sometimes going to be
stored there.
Maybe rephrase this to:
Use one element of the struct v4l2_create_buffers "reserved" array to report...
With that you can add my
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> the maximum possible number of buffers for the queue.
> V4l2 framework set V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS flags in queue
> capabilities so userland can know when the field is valid.
> Does the same change in v4l2_create_buffers32 structure.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../userspace-api/media/v4l/vidioc-create-bufs.rst | 8 ++++++--
> Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst | 1 +
> drivers/media/common/videobuf2/videobuf2-v4l2.c | 2 ++
> drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 9 ++++++++-
> drivers/media/v4l2-core/v4l2-ioctl.c | 4 ++--
> include/uapi/linux/videodev2.h | 7 ++++++-
> 6 files changed, 25 insertions(+), 6 deletions(-)
>
> diff --git a/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
> index a048a9f6b7b6..49232c9006c2 100644
> --- a/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
> +++ b/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
> @@ -116,9 +116,13 @@ than the number requested.
> - ``flags``
> - Specifies additional buffer management attributes.
> See :ref:`memory-flags`.
> -
> * - __u32
> - - ``reserved``\ [6]
> + - ``max_num_buffers``
> + - If the V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
> + this field indicates the maximum possible number of buffers
> + for this queue.
> + * - __u32
> + - ``reserved``\ [5]
> - A place holder for future extensions. Drivers and applications
> must set the array to zero.
>
> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> index 099fa6695167..0b3a41a45d05 100644
> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> @@ -120,6 +120,7 @@ aborting or finishing any DMA in progress, an implicit
> .. _V4L2-BUF-CAP-SUPPORTS-ORPHANED-BUFS:
> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
> +.. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
>
> .. raw:: latex
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index f3cf4b235c1f..bdfc3a253c65 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -762,6 +762,8 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
> fill_buf_caps(q, &create->capabilities);
> validate_memory_flags(q, create->memory, &create->flags);
> create->index = vb2_get_num_buffers(q);
> + create->max_num_buffers = q->max_num_buffers;
> + create->capabilities |= V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS;
> if (create->count == 0)
> return ret != -EBUSY ? ret : 0;
>
> diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
> index f3bed37859a2..5aac5cf780b3 100644
> --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
> +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
> @@ -116,6 +116,9 @@ struct v4l2_format32 {
> * @flags: additional buffer management attributes (ignored unless the
> * queue has V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS capability and
> * configured for MMAP streaming I/O).
> + * @max_num_buffers: if V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
> + * this field indicate the maximum possible number of buffers
> + * for this queue.
> * @reserved: future extensions
> */
> struct v4l2_create_buffers32 {
> @@ -125,7 +128,8 @@ struct v4l2_create_buffers32 {
> struct v4l2_format32 format;
> __u32 capabilities;
> __u32 flags;
> - __u32 reserved[6];
> + __u32 max_num_buffers;
> + __u32 reserved[5];
> };
>
> static int get_v4l2_format32(struct v4l2_format *p64,
> @@ -175,6 +179,8 @@ static int get_v4l2_create32(struct v4l2_create_buffers *p64,
> return -EFAULT;
> if (copy_from_user(&p64->flags, &p32->flags, sizeof(p32->flags)))
> return -EFAULT;
> + if (copy_from_user(&p64->max_num_buffers, &p32->max_num_buffers, sizeof(p32->max_num_buffers)))
> + return -EFAULT;
> return get_v4l2_format32(&p64->format, &p32->format);
> }
>
> @@ -221,6 +227,7 @@ static int put_v4l2_create32(struct v4l2_create_buffers *p64,
> offsetof(struct v4l2_create_buffers32, format)) ||
> put_user(p64->capabilities, &p32->capabilities) ||
> put_user(p64->flags, &p32->flags) ||
> + put_user(p64->max_num_buffers, &p32->max_num_buffers) ||
> copy_to_user(p32->reserved, p64->reserved, sizeof(p64->reserved)))
> return -EFAULT;
> return put_v4l2_format32(&p64->format, &p32->format);
> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
> index 9b1de54ce379..4d90424cbfc4 100644
> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> @@ -483,9 +483,9 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
> {
> const struct v4l2_create_buffers *p = arg;
>
> - pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, ",
> + pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, max num buffers=%u",
> p->index, p->count, prt_names(p->memory, v4l2_memory_names),
> - p->capabilities);
> + p->capabilities, p->max_num_buffers);
> v4l_print_format(&p->format, write_only);
> }
>
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index c3d4e490ce7c..13ddb5abf584 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -1035,6 +1035,7 @@ struct v4l2_requestbuffers {
> #define V4L2_BUF_CAP_SUPPORTS_ORPHANED_BUFS (1 << 4)
> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
> +#define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
>
> /**
> * struct v4l2_plane - plane info for multi-planar buffers
> @@ -2605,6 +2606,9 @@ struct v4l2_dbg_chip_info {
> * @flags: additional buffer management attributes (ignored unless the
> * queue has V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS capability
> * and configured for MMAP streaming I/O).
> + * @max_num_buffers: if V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
> + * this field indicate the maximum possible number of buffers
> + * for this queue.
> * @reserved: future extensions
> */
> struct v4l2_create_buffers {
> @@ -2614,7 +2618,8 @@ struct v4l2_create_buffers {
> struct v4l2_format format;
> __u32 capabilities;
> __u32 flags;
> - __u32 reserved[6];
> + __u32 max_num_buffers;
> + __u32 reserved[5];
> };
>
> /*
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 44/56] media: core: Report the maximum possible number of buffers for the queue
@ 2023-11-09 12:28 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 12:28 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
Hi Benjamin,
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Use one of the struct v4l2_create_buffers reserved bytes to report
I initially thought you were using literally a single byte, which made
no sense to me given that values much larger than 255 are sometimes going to be
stored there.
Maybe rephrase this to:
Use one element of the struct v4l2_create_buffers "reserved" array to report...
With that you can add my
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> the maximum possible number of buffers for the queue.
> V4l2 framework set V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS flags in queue
> capabilities so userland can know when the field is valid.
> Does the same change in v4l2_create_buffers32 structure.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> ---
> .../userspace-api/media/v4l/vidioc-create-bufs.rst | 8 ++++++--
> Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst | 1 +
> drivers/media/common/videobuf2/videobuf2-v4l2.c | 2 ++
> drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 9 ++++++++-
> drivers/media/v4l2-core/v4l2-ioctl.c | 4 ++--
> include/uapi/linux/videodev2.h | 7 ++++++-
> 6 files changed, 25 insertions(+), 6 deletions(-)
>
> diff --git a/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
> index a048a9f6b7b6..49232c9006c2 100644
> --- a/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
> +++ b/Documentation/userspace-api/media/v4l/vidioc-create-bufs.rst
> @@ -116,9 +116,13 @@ than the number requested.
> - ``flags``
> - Specifies additional buffer management attributes.
> See :ref:`memory-flags`.
> -
> * - __u32
> - - ``reserved``\ [6]
> + - ``max_num_buffers``
> + - If the V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
> + this field indicates the maximum possible number of buffers
> + for this queue.
> + * - __u32
> + - ``reserved``\ [5]
> - A place holder for future extensions. Drivers and applications
> must set the array to zero.
>
> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> index 099fa6695167..0b3a41a45d05 100644
> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> @@ -120,6 +120,7 @@ aborting or finishing any DMA in progress, an implicit
> .. _V4L2-BUF-CAP-SUPPORTS-ORPHANED-BUFS:
> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
> +.. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
>
> .. raw:: latex
>
> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> index f3cf4b235c1f..bdfc3a253c65 100644
> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> @@ -762,6 +762,8 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
> fill_buf_caps(q, &create->capabilities);
> validate_memory_flags(q, create->memory, &create->flags);
> create->index = vb2_get_num_buffers(q);
> + create->max_num_buffers = q->max_num_buffers;
> + create->capabilities |= V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS;
> if (create->count == 0)
> return ret != -EBUSY ? ret : 0;
>
> diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
> index f3bed37859a2..5aac5cf780b3 100644
> --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
> +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
> @@ -116,6 +116,9 @@ struct v4l2_format32 {
> * @flags: additional buffer management attributes (ignored unless the
> * queue has V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS capability and
> * configured for MMAP streaming I/O).
> + * @max_num_buffers: if V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
> + * this field indicate the maximum possible number of buffers
> + * for this queue.
> * @reserved: future extensions
> */
> struct v4l2_create_buffers32 {
> @@ -125,7 +128,8 @@ struct v4l2_create_buffers32 {
> struct v4l2_format32 format;
> __u32 capabilities;
> __u32 flags;
> - __u32 reserved[6];
> + __u32 max_num_buffers;
> + __u32 reserved[5];
> };
>
> static int get_v4l2_format32(struct v4l2_format *p64,
> @@ -175,6 +179,8 @@ static int get_v4l2_create32(struct v4l2_create_buffers *p64,
> return -EFAULT;
> if (copy_from_user(&p64->flags, &p32->flags, sizeof(p32->flags)))
> return -EFAULT;
> + if (copy_from_user(&p64->max_num_buffers, &p32->max_num_buffers, sizeof(p32->max_num_buffers)))
> + return -EFAULT;
> return get_v4l2_format32(&p64->format, &p32->format);
> }
>
> @@ -221,6 +227,7 @@ static int put_v4l2_create32(struct v4l2_create_buffers *p64,
> offsetof(struct v4l2_create_buffers32, format)) ||
> put_user(p64->capabilities, &p32->capabilities) ||
> put_user(p64->flags, &p32->flags) ||
> + put_user(p64->max_num_buffers, &p32->max_num_buffers) ||
> copy_to_user(p32->reserved, p64->reserved, sizeof(p64->reserved)))
> return -EFAULT;
> return put_v4l2_format32(&p64->format, &p32->format);
> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
> index 9b1de54ce379..4d90424cbfc4 100644
> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> @@ -483,9 +483,9 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
> {
> const struct v4l2_create_buffers *p = arg;
>
> - pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, ",
> + pr_cont("index=%d, count=%d, memory=%s, capabilities=0x%08x, max num buffers=%u",
> p->index, p->count, prt_names(p->memory, v4l2_memory_names),
> - p->capabilities);
> + p->capabilities, p->max_num_buffers);
> v4l_print_format(&p->format, write_only);
> }
>
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index c3d4e490ce7c..13ddb5abf584 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -1035,6 +1035,7 @@ struct v4l2_requestbuffers {
> #define V4L2_BUF_CAP_SUPPORTS_ORPHANED_BUFS (1 << 4)
> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
> +#define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
>
> /**
> * struct v4l2_plane - plane info for multi-planar buffers
> @@ -2605,6 +2606,9 @@ struct v4l2_dbg_chip_info {
> * @flags: additional buffer management attributes (ignored unless the
> * queue has V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS capability
> * and configured for MMAP streaming I/O).
> + * @max_num_buffers: if V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS capability flag is set
> + * this field indicate the maximum possible number of buffers
> + * for this queue.
> * @reserved: future extensions
> */
> struct v4l2_create_buffers {
> @@ -2614,7 +2618,8 @@ struct v4l2_create_buffers {
> struct v4l2_format format;
> __u32 capabilities;
> __u32 flags;
> - __u32 reserved[6];
> + __u32 max_num_buffers;
> + __u32 reserved[5];
> };
>
> /*
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 45/56] media: test-drivers: vivid: Increase max supported buffers for capture queues
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 12:31 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 12:31 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Change the maximum number of buffers of some capture queues in order
> to test max_num_buffers field.
>
> Allow to allocate up to:
> - 64 buffers for video capture queue.
> - 1024 buffers for sdr capture queue.
> - 32768 buffers for vbi capture queue.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/test-drivers/vivid/vivid-core.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/drivers/media/test-drivers/vivid/vivid-core.c b/drivers/media/test-drivers/vivid/vivid-core.c
> index 394c9f81ea72..353f035fcd19 100644
> --- a/drivers/media/test-drivers/vivid/vivid-core.c
> +++ b/drivers/media/test-drivers/vivid/vivid-core.c
> @@ -876,6 +876,20 @@ static int vivid_create_queue(struct vivid_dev *dev,
> q->type = buf_type;
> q->io_modes = VB2_MMAP | VB2_DMABUF;
> q->io_modes |= V4L2_TYPE_IS_OUTPUT(buf_type) ? VB2_WRITE : VB2_READ;
> +
> + /*
> + * The maximum number of buffers is 32768 if PAGE_SHIFT == 12,
> + * see also MAX_BUFFER_INDEX in videobuf2-core.c. It will be less if
> + * PAGE_SHIFT > 12, but then max_num_buffers will be clamped by
> + * videobuf2-core.c to MAX_BUFFER_INDEX.
> + */
> + if (buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
> + q->max_num_buffers = 64;
> + if (buf_type == V4L2_BUF_TYPE_SDR_CAPTURE)
> + q->max_num_buffers = 1024;
> + if (buf_type == V4L2_BUF_TYPE_VBI_CAPTURE)
> + q->max_num_buffers = 32768;
> +
> if (allocators[dev->inst] != 1)
> q->io_modes |= VB2_USERPTR;
> q->drv_priv = dev;
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 45/56] media: test-drivers: vivid: Increase max supported buffers for capture queues
@ 2023-11-09 12:31 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 12:31 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Change the maximum number of buffers of some capture queues in order
> to test max_num_buffers field.
>
> Allow to allocate up to:
> - 64 buffers for video capture queue.
> - 1024 buffers for sdr capture queue.
> - 32768 buffers for vbi capture queue.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/test-drivers/vivid/vivid-core.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/drivers/media/test-drivers/vivid/vivid-core.c b/drivers/media/test-drivers/vivid/vivid-core.c
> index 394c9f81ea72..353f035fcd19 100644
> --- a/drivers/media/test-drivers/vivid/vivid-core.c
> +++ b/drivers/media/test-drivers/vivid/vivid-core.c
> @@ -876,6 +876,20 @@ static int vivid_create_queue(struct vivid_dev *dev,
> q->type = buf_type;
> q->io_modes = VB2_MMAP | VB2_DMABUF;
> q->io_modes |= V4L2_TYPE_IS_OUTPUT(buf_type) ? VB2_WRITE : VB2_READ;
> +
> + /*
> + * The maximum number of buffers is 32768 if PAGE_SHIFT == 12,
> + * see also MAX_BUFFER_INDEX in videobuf2-core.c. It will be less if
> + * PAGE_SHIFT > 12, but then max_num_buffers will be clamped by
> + * videobuf2-core.c to MAX_BUFFER_INDEX.
> + */
> + if (buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
> + q->max_num_buffers = 64;
> + if (buf_type == V4L2_BUF_TYPE_SDR_CAPTURE)
> + q->max_num_buffers = 1024;
> + if (buf_type == V4L2_BUF_TYPE_VBI_CAPTURE)
> + q->max_num_buffers = 32768;
> +
> if (allocators[dev->inst] != 1)
> q->io_modes |= VB2_USERPTR;
> q->drv_priv = dev;
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 45/56] media: test-drivers: vivid: Increase max supported buffers for capture queues
@ 2023-11-09 12:31 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 12:31 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Change the maximum number of buffers of some capture queues in order
> to test max_num_buffers field.
>
> Allow to allocate up to:
> - 64 buffers for video capture queue.
> - 1024 buffers for sdr capture queue.
> - 32768 buffers for vbi capture queue.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/test-drivers/vivid/vivid-core.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/drivers/media/test-drivers/vivid/vivid-core.c b/drivers/media/test-drivers/vivid/vivid-core.c
> index 394c9f81ea72..353f035fcd19 100644
> --- a/drivers/media/test-drivers/vivid/vivid-core.c
> +++ b/drivers/media/test-drivers/vivid/vivid-core.c
> @@ -876,6 +876,20 @@ static int vivid_create_queue(struct vivid_dev *dev,
> q->type = buf_type;
> q->io_modes = VB2_MMAP | VB2_DMABUF;
> q->io_modes |= V4L2_TYPE_IS_OUTPUT(buf_type) ? VB2_WRITE : VB2_READ;
> +
> + /*
> + * The maximum number of buffers is 32768 if PAGE_SHIFT == 12,
> + * see also MAX_BUFFER_INDEX in videobuf2-core.c. It will be less if
> + * PAGE_SHIFT > 12, but then max_num_buffers will be clamped by
> + * videobuf2-core.c to MAX_BUFFER_INDEX.
> + */
> + if (buf_type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
> + q->max_num_buffers = 64;
> + if (buf_type == V4L2_BUF_TYPE_SDR_CAPTURE)
> + q->max_num_buffers = 1024;
> + if (buf_type == V4L2_BUF_TYPE_VBI_CAPTURE)
> + q->max_num_buffers = 32768;
> +
> if (allocators[dev->inst] != 1)
> q->io_modes |= VB2_USERPTR;
> q->drv_priv = dev;
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 46/56] media: test-drivers: vicodec: Increase max supported capture queue buffers
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 12:32 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 12:32 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Allow to allocated up to 64 buffers on capture queue.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/test-drivers/vicodec/vicodec-core.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
> index 6f0e20df74e9..69cbe2c094e1 100644
> --- a/drivers/media/test-drivers/vicodec/vicodec-core.c
> +++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
> @@ -1718,6 +1718,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
> V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
> V4L2_BUF_TYPE_VIDEO_CAPTURE);
> dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
> + dst_vq->max_num_buffers = 64;
> dst_vq->drv_priv = ctx;
> dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> dst_vq->ops = &vicodec_qops;
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 46/56] media: test-drivers: vicodec: Increase max supported capture queue buffers
@ 2023-11-09 12:32 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 12:32 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Allow to allocated up to 64 buffers on capture queue.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/test-drivers/vicodec/vicodec-core.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
> index 6f0e20df74e9..69cbe2c094e1 100644
> --- a/drivers/media/test-drivers/vicodec/vicodec-core.c
> +++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
> @@ -1718,6 +1718,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
> V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
> V4L2_BUF_TYPE_VIDEO_CAPTURE);
> dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
> + dst_vq->max_num_buffers = 64;
> dst_vq->drv_priv = ctx;
> dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> dst_vq->ops = &vicodec_qops;
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 46/56] media: test-drivers: vicodec: Increase max supported capture queue buffers
@ 2023-11-09 12:32 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 12:32 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Allow to allocated up to 64 buffers on capture queue.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> ---
> drivers/media/test-drivers/vicodec/vicodec-core.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/media/test-drivers/vicodec/vicodec-core.c b/drivers/media/test-drivers/vicodec/vicodec-core.c
> index 6f0e20df74e9..69cbe2c094e1 100644
> --- a/drivers/media/test-drivers/vicodec/vicodec-core.c
> +++ b/drivers/media/test-drivers/vicodec/vicodec-core.c
> @@ -1718,6 +1718,7 @@ static int queue_init(void *priv, struct vb2_queue *src_vq,
> V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE :
> V4L2_BUF_TYPE_VIDEO_CAPTURE);
> dst_vq->io_modes = VB2_MMAP | VB2_USERPTR | VB2_DMABUF;
> + dst_vq->max_num_buffers = 64;
> dst_vq->drv_priv = ctx;
> dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
> dst_vq->ops = &vicodec_qops;
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 47/56] media: verisilicon: Refactor postprocessor to store more buffers
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 13:58 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 13:58 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Since vb2 queue can store more than VB2_MAX_FRAME buffers, the
> postprocessor buffer storage must be capable to store more buffers too.
> Change static dec_q array to allocated array to be capable to store
> up to queue 'max_num_buffers'.
> Keep allocating queue 'num_buffers' at queue setup time but also allows
> to allocate postprocessors buffers on the fly.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> drivers/media/platform/verisilicon/hantro.h | 7 +-
> .../media/platform/verisilicon/hantro_drv.c | 4 +-
> .../media/platform/verisilicon/hantro_hw.h | 4 +-
> .../platform/verisilicon/hantro_postproc.c | 93 +++++++++++++++----
> .../media/platform/verisilicon/hantro_v4l2.c | 2 +-
> 5 files changed, 85 insertions(+), 25 deletions(-)
>
> diff --git a/drivers/media/platform/verisilicon/hantro.h b/drivers/media/platform/verisilicon/hantro.h
> index 77aee9489516..0948b04a9f8d 100644
> --- a/drivers/media/platform/verisilicon/hantro.h
> +++ b/drivers/media/platform/verisilicon/hantro.h
> @@ -469,11 +469,14 @@ hantro_get_dst_buf(struct hantro_ctx *ctx)
> bool hantro_needs_postproc(const struct hantro_ctx *ctx,
> const struct hantro_fmt *fmt);
>
> +dma_addr_t
> +hantro_postproc_get_dec_buf_addr(struct hantro_ctx *ctx, int index);
> +
> static inline dma_addr_t
> hantro_get_dec_buf_addr(struct hantro_ctx *ctx, struct vb2_buffer *vb)
> {
> if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt))
> - return ctx->postproc.dec_q[vb->index].dma;
> + return hantro_postproc_get_dec_buf_addr(ctx, vb->index);
> return vb2_dma_contig_plane_dma_addr(vb, 0);
> }
>
> @@ -485,8 +488,8 @@ vb2_to_hantro_decoded_buf(struct vb2_buffer *buf)
>
> void hantro_postproc_disable(struct hantro_ctx *ctx);
> void hantro_postproc_enable(struct hantro_ctx *ctx);
> +int hantro_postproc_init(struct hantro_ctx *ctx);
> void hantro_postproc_free(struct hantro_ctx *ctx);
> -int hantro_postproc_alloc(struct hantro_ctx *ctx);
> int hanto_postproc_enum_framesizes(struct hantro_ctx *ctx,
> struct v4l2_frmsizeenum *fsize);
>
> diff --git a/drivers/media/platform/verisilicon/hantro_drv.c b/drivers/media/platform/verisilicon/hantro_drv.c
> index a9fa05ac56a9..7f5b82eb6649 100644
> --- a/drivers/media/platform/verisilicon/hantro_drv.c
> +++ b/drivers/media/platform/verisilicon/hantro_drv.c
> @@ -235,8 +235,10 @@ queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
> * The Kernel needs access to the JPEG destination buffer for the
> * JPEG encoder to fill in the JPEG headers.
> */
> - if (!ctx->is_encoder)
> + if (!ctx->is_encoder) {
> dst_vq->dma_attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
> + dst_vq->max_num_buffers = MAX_POSTPROC_BUFFERS;
> + }
>
> dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
> diff --git a/drivers/media/platform/verisilicon/hantro_hw.h b/drivers/media/platform/verisilicon/hantro_hw.h
> index 7f33f7b07ce4..292a76ef643e 100644
> --- a/drivers/media/platform/verisilicon/hantro_hw.h
> +++ b/drivers/media/platform/verisilicon/hantro_hw.h
> @@ -40,6 +40,8 @@
>
> #define AV1_MAX_FRAME_BUF_COUNT (V4L2_AV1_TOTAL_REFS_PER_FRAME + 1)
>
> +#define MAX_POSTPROC_BUFFERS 64
> +
> struct hantro_dev;
> struct hantro_ctx;
> struct hantro_buf;
> @@ -336,7 +338,7 @@ struct hantro_av1_dec_hw_ctx {
> * @dec_q: References buffers, in decoder format.
> */
> struct hantro_postproc_ctx {
> - struct hantro_aux_buf dec_q[VB2_MAX_FRAME];
> + struct hantro_aux_buf dec_q[MAX_POSTPROC_BUFFERS];
> };
>
> /**
> diff --git a/drivers/media/platform/verisilicon/hantro_postproc.c b/drivers/media/platform/verisilicon/hantro_postproc.c
> index 8f8f17e671ce..41e93176300b 100644
> --- a/drivers/media/platform/verisilicon/hantro_postproc.c
> +++ b/drivers/media/platform/verisilicon/hantro_postproc.c
> @@ -177,9 +177,11 @@ static int hantro_postproc_g2_enum_framesizes(struct hantro_ctx *ctx,
> void hantro_postproc_free(struct hantro_ctx *ctx)
> {
> struct hantro_dev *vpu = ctx->dev;
> + struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
> + struct vb2_queue *queue = &m2m_ctx->cap_q_ctx.q;
> unsigned int i;
>
> - for (i = 0; i < VB2_MAX_FRAME; ++i) {
> + for (i = 0; i < queue->max_num_buffers; ++i) {
> struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
>
> if (priv->cpu) {
> @@ -190,20 +192,17 @@ void hantro_postproc_free(struct hantro_ctx *ctx)
> }
> }
>
> -int hantro_postproc_alloc(struct hantro_ctx *ctx)
> +static unsigned int hantro_postproc_buffer_size(struct hantro_ctx *ctx)
> {
> - struct hantro_dev *vpu = ctx->dev;
> - struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
> - struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
> - unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
> struct v4l2_pix_format_mplane pix_mp;
> const struct hantro_fmt *fmt;
> - unsigned int i, buf_size;
> + unsigned int buf_size;
>
> /* this should always pick native format */
> fmt = hantro_get_default_fmt(ctx, false, ctx->bit_depth, HANTRO_AUTO_POSTPROC);
> if (!fmt)
> - return -EINVAL;
> + return 0;
> +
> v4l2_fill_pixfmt_mp(&pix_mp, fmt->fourcc, ctx->src_fmt.width,
> ctx->src_fmt.height);
>
> @@ -221,23 +220,77 @@ int hantro_postproc_alloc(struct hantro_ctx *ctx)
> buf_size += hantro_av1_mv_size(pix_mp.width,
> pix_mp.height);
>
> - for (i = 0; i < num_buffers; ++i) {
> - struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
> + return buf_size;
> +}
> +
> +static int hantro_postproc_alloc(struct hantro_ctx *ctx, int index)
> +{
> + struct hantro_dev *vpu = ctx->dev;
> + struct hantro_aux_buf *priv = &ctx->postproc.dec_q[index];
> + unsigned int buf_size = hantro_postproc_buffer_size(ctx);
> +
> + if (!buf_size)
> + return -EINVAL;
> +
> + /*
> + * The buffers on this queue are meant as intermediate
> + * buffers for the decoder, so no mapping is needed.
> + */
> + priv->attrs = DMA_ATTR_NO_KERNEL_MAPPING;
> + priv->cpu = dma_alloc_attrs(vpu->dev, buf_size, &priv->dma,
> + GFP_KERNEL, priv->attrs);
> + if (!priv->cpu)
> + return -ENOMEM;
> + priv->size = buf_size;
> +
> + return 0;
> +}
>
> - /*
> - * The buffers on this queue are meant as intermediate
> - * buffers for the decoder, so no mapping is needed.
> - */
> - priv->attrs = DMA_ATTR_NO_KERNEL_MAPPING;
> - priv->cpu = dma_alloc_attrs(vpu->dev, buf_size, &priv->dma,
> - GFP_KERNEL, priv->attrs);
> - if (!priv->cpu)
> - return -ENOMEM;
> - priv->size = buf_size;
> +int hantro_postproc_init(struct hantro_ctx *ctx)
> +{
> + struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
> + struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
> + unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
> + unsigned int i;
> + int ret;
> +
> + for (i = 0; i < num_buffers; i++) {
> + ret = hantro_postproc_alloc(ctx, i);
> + if (ret)
> + return ret;
> }
> +
> return 0;
> }
>
> +dma_addr_t
> +hantro_postproc_get_dec_buf_addr(struct hantro_ctx *ctx, int index)
> +{
> + struct hantro_aux_buf *priv = &ctx->postproc.dec_q[index];
> + unsigned int buf_size = hantro_postproc_buffer_size(ctx);
> + struct hantro_dev *vpu = ctx->dev;
> + int ret;
> +
> + if (priv->size < buf_size && priv->cpu) {
> + /* buffer is too small, release it */
> + dma_free_attrs(vpu->dev, priv->size, priv->cpu,
> + priv->dma, priv->attrs);
> + priv->cpu = NULL;
> + }
> +
> + if (!priv->cpu) {
> + /* buffer not already allocated, try getting a new one */
> + ret = hantro_postproc_alloc(ctx, index);
> + if (ret)
> + return 0;
> + }
> +
> + if (!priv->cpu)
> + return 0;
> +
> + return priv->dma;
> +}
> +
> static void hantro_postproc_g1_disable(struct hantro_ctx *ctx)
> {
> struct hantro_dev *vpu = ctx->dev;
> diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
> index b3ae037a50f6..f0d8b165abcd 100644
> --- a/drivers/media/platform/verisilicon/hantro_v4l2.c
> +++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
> @@ -933,7 +933,7 @@ static int hantro_start_streaming(struct vb2_queue *q, unsigned int count)
> }
>
> if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt)) {
> - ret = hantro_postproc_alloc(ctx);
> + ret = hantro_postproc_init(ctx);
> if (ret)
> goto err_codec_exit;
> }
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 47/56] media: verisilicon: Refactor postprocessor to store more buffers
@ 2023-11-09 13:58 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 13:58 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Since vb2 queue can store more than VB2_MAX_FRAME buffers, the
> postprocessor buffer storage must be capable to store more buffers too.
> Change static dec_q array to allocated array to be capable to store
> up to queue 'max_num_buffers'.
> Keep allocating queue 'num_buffers' at queue setup time but also allows
> to allocate postprocessors buffers on the fly.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> drivers/media/platform/verisilicon/hantro.h | 7 +-
> .../media/platform/verisilicon/hantro_drv.c | 4 +-
> .../media/platform/verisilicon/hantro_hw.h | 4 +-
> .../platform/verisilicon/hantro_postproc.c | 93 +++++++++++++++----
> .../media/platform/verisilicon/hantro_v4l2.c | 2 +-
> 5 files changed, 85 insertions(+), 25 deletions(-)
>
> diff --git a/drivers/media/platform/verisilicon/hantro.h b/drivers/media/platform/verisilicon/hantro.h
> index 77aee9489516..0948b04a9f8d 100644
> --- a/drivers/media/platform/verisilicon/hantro.h
> +++ b/drivers/media/platform/verisilicon/hantro.h
> @@ -469,11 +469,14 @@ hantro_get_dst_buf(struct hantro_ctx *ctx)
> bool hantro_needs_postproc(const struct hantro_ctx *ctx,
> const struct hantro_fmt *fmt);
>
> +dma_addr_t
> +hantro_postproc_get_dec_buf_addr(struct hantro_ctx *ctx, int index);
> +
> static inline dma_addr_t
> hantro_get_dec_buf_addr(struct hantro_ctx *ctx, struct vb2_buffer *vb)
> {
> if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt))
> - return ctx->postproc.dec_q[vb->index].dma;
> + return hantro_postproc_get_dec_buf_addr(ctx, vb->index);
> return vb2_dma_contig_plane_dma_addr(vb, 0);
> }
>
> @@ -485,8 +488,8 @@ vb2_to_hantro_decoded_buf(struct vb2_buffer *buf)
>
> void hantro_postproc_disable(struct hantro_ctx *ctx);
> void hantro_postproc_enable(struct hantro_ctx *ctx);
> +int hantro_postproc_init(struct hantro_ctx *ctx);
> void hantro_postproc_free(struct hantro_ctx *ctx);
> -int hantro_postproc_alloc(struct hantro_ctx *ctx);
> int hanto_postproc_enum_framesizes(struct hantro_ctx *ctx,
> struct v4l2_frmsizeenum *fsize);
>
> diff --git a/drivers/media/platform/verisilicon/hantro_drv.c b/drivers/media/platform/verisilicon/hantro_drv.c
> index a9fa05ac56a9..7f5b82eb6649 100644
> --- a/drivers/media/platform/verisilicon/hantro_drv.c
> +++ b/drivers/media/platform/verisilicon/hantro_drv.c
> @@ -235,8 +235,10 @@ queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
> * The Kernel needs access to the JPEG destination buffer for the
> * JPEG encoder to fill in the JPEG headers.
> */
> - if (!ctx->is_encoder)
> + if (!ctx->is_encoder) {
> dst_vq->dma_attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
> + dst_vq->max_num_buffers = MAX_POSTPROC_BUFFERS;
> + }
>
> dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
> diff --git a/drivers/media/platform/verisilicon/hantro_hw.h b/drivers/media/platform/verisilicon/hantro_hw.h
> index 7f33f7b07ce4..292a76ef643e 100644
> --- a/drivers/media/platform/verisilicon/hantro_hw.h
> +++ b/drivers/media/platform/verisilicon/hantro_hw.h
> @@ -40,6 +40,8 @@
>
> #define AV1_MAX_FRAME_BUF_COUNT (V4L2_AV1_TOTAL_REFS_PER_FRAME + 1)
>
> +#define MAX_POSTPROC_BUFFERS 64
> +
> struct hantro_dev;
> struct hantro_ctx;
> struct hantro_buf;
> @@ -336,7 +338,7 @@ struct hantro_av1_dec_hw_ctx {
> * @dec_q: References buffers, in decoder format.
> */
> struct hantro_postproc_ctx {
> - struct hantro_aux_buf dec_q[VB2_MAX_FRAME];
> + struct hantro_aux_buf dec_q[MAX_POSTPROC_BUFFERS];
> };
>
> /**
> diff --git a/drivers/media/platform/verisilicon/hantro_postproc.c b/drivers/media/platform/verisilicon/hantro_postproc.c
> index 8f8f17e671ce..41e93176300b 100644
> --- a/drivers/media/platform/verisilicon/hantro_postproc.c
> +++ b/drivers/media/platform/verisilicon/hantro_postproc.c
> @@ -177,9 +177,11 @@ static int hantro_postproc_g2_enum_framesizes(struct hantro_ctx *ctx,
> void hantro_postproc_free(struct hantro_ctx *ctx)
> {
> struct hantro_dev *vpu = ctx->dev;
> + struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
> + struct vb2_queue *queue = &m2m_ctx->cap_q_ctx.q;
> unsigned int i;
>
> - for (i = 0; i < VB2_MAX_FRAME; ++i) {
> + for (i = 0; i < queue->max_num_buffers; ++i) {
> struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
>
> if (priv->cpu) {
> @@ -190,20 +192,17 @@ void hantro_postproc_free(struct hantro_ctx *ctx)
> }
> }
>
> -int hantro_postproc_alloc(struct hantro_ctx *ctx)
> +static unsigned int hantro_postproc_buffer_size(struct hantro_ctx *ctx)
> {
> - struct hantro_dev *vpu = ctx->dev;
> - struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
> - struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
> - unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
> struct v4l2_pix_format_mplane pix_mp;
> const struct hantro_fmt *fmt;
> - unsigned int i, buf_size;
> + unsigned int buf_size;
>
> /* this should always pick native format */
> fmt = hantro_get_default_fmt(ctx, false, ctx->bit_depth, HANTRO_AUTO_POSTPROC);
> if (!fmt)
> - return -EINVAL;
> + return 0;
> +
> v4l2_fill_pixfmt_mp(&pix_mp, fmt->fourcc, ctx->src_fmt.width,
> ctx->src_fmt.height);
>
> @@ -221,23 +220,77 @@ int hantro_postproc_alloc(struct hantro_ctx *ctx)
> buf_size += hantro_av1_mv_size(pix_mp.width,
> pix_mp.height);
>
> - for (i = 0; i < num_buffers; ++i) {
> - struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
> + return buf_size;
> +}
> +
> +static int hantro_postproc_alloc(struct hantro_ctx *ctx, int index)
> +{
> + struct hantro_dev *vpu = ctx->dev;
> + struct hantro_aux_buf *priv = &ctx->postproc.dec_q[index];
> + unsigned int buf_size = hantro_postproc_buffer_size(ctx);
> +
> + if (!buf_size)
> + return -EINVAL;
> +
> + /*
> + * The buffers on this queue are meant as intermediate
> + * buffers for the decoder, so no mapping is needed.
> + */
> + priv->attrs = DMA_ATTR_NO_KERNEL_MAPPING;
> + priv->cpu = dma_alloc_attrs(vpu->dev, buf_size, &priv->dma,
> + GFP_KERNEL, priv->attrs);
> + if (!priv->cpu)
> + return -ENOMEM;
> + priv->size = buf_size;
> +
> + return 0;
> +}
>
> - /*
> - * The buffers on this queue are meant as intermediate
> - * buffers for the decoder, so no mapping is needed.
> - */
> - priv->attrs = DMA_ATTR_NO_KERNEL_MAPPING;
> - priv->cpu = dma_alloc_attrs(vpu->dev, buf_size, &priv->dma,
> - GFP_KERNEL, priv->attrs);
> - if (!priv->cpu)
> - return -ENOMEM;
> - priv->size = buf_size;
> +int hantro_postproc_init(struct hantro_ctx *ctx)
> +{
> + struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
> + struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
> + unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
> + unsigned int i;
> + int ret;
> +
> + for (i = 0; i < num_buffers; i++) {
> + ret = hantro_postproc_alloc(ctx, i);
> + if (ret)
> + return ret;
> }
> +
> return 0;
> }
>
> +dma_addr_t
> +hantro_postproc_get_dec_buf_addr(struct hantro_ctx *ctx, int index)
> +{
> + struct hantro_aux_buf *priv = &ctx->postproc.dec_q[index];
> + unsigned int buf_size = hantro_postproc_buffer_size(ctx);
> + struct hantro_dev *vpu = ctx->dev;
> + int ret;
> +
> + if (priv->size < buf_size && priv->cpu) {
> + /* buffer is too small, release it */
> + dma_free_attrs(vpu->dev, priv->size, priv->cpu,
> + priv->dma, priv->attrs);
> + priv->cpu = NULL;
> + }
> +
> + if (!priv->cpu) {
> + /* buffer not already allocated, try getting a new one */
> + ret = hantro_postproc_alloc(ctx, index);
> + if (ret)
> + return 0;
> + }
> +
> + if (!priv->cpu)
> + return 0;
> +
> + return priv->dma;
> +}
> +
> static void hantro_postproc_g1_disable(struct hantro_ctx *ctx)
> {
> struct hantro_dev *vpu = ctx->dev;
> diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
> index b3ae037a50f6..f0d8b165abcd 100644
> --- a/drivers/media/platform/verisilicon/hantro_v4l2.c
> +++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
> @@ -933,7 +933,7 @@ static int hantro_start_streaming(struct vb2_queue *q, unsigned int count)
> }
>
> if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt)) {
> - ret = hantro_postproc_alloc(ctx);
> + ret = hantro_postproc_init(ctx);
> if (ret)
> goto err_codec_exit;
> }
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 47/56] media: verisilicon: Refactor postprocessor to store more buffers
@ 2023-11-09 13:58 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 13:58 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Since vb2 queue can store more than VB2_MAX_FRAME buffers, the
> postprocessor buffer storage must be capable to store more buffers too.
> Change static dec_q array to allocated array to be capable to store
> up to queue 'max_num_buffers'.
> Keep allocating queue 'num_buffers' at queue setup time but also allows
> to allocate postprocessors buffers on the fly.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> drivers/media/platform/verisilicon/hantro.h | 7 +-
> .../media/platform/verisilicon/hantro_drv.c | 4 +-
> .../media/platform/verisilicon/hantro_hw.h | 4 +-
> .../platform/verisilicon/hantro_postproc.c | 93 +++++++++++++++----
> .../media/platform/verisilicon/hantro_v4l2.c | 2 +-
> 5 files changed, 85 insertions(+), 25 deletions(-)
>
> diff --git a/drivers/media/platform/verisilicon/hantro.h b/drivers/media/platform/verisilicon/hantro.h
> index 77aee9489516..0948b04a9f8d 100644
> --- a/drivers/media/platform/verisilicon/hantro.h
> +++ b/drivers/media/platform/verisilicon/hantro.h
> @@ -469,11 +469,14 @@ hantro_get_dst_buf(struct hantro_ctx *ctx)
> bool hantro_needs_postproc(const struct hantro_ctx *ctx,
> const struct hantro_fmt *fmt);
>
> +dma_addr_t
> +hantro_postproc_get_dec_buf_addr(struct hantro_ctx *ctx, int index);
> +
> static inline dma_addr_t
> hantro_get_dec_buf_addr(struct hantro_ctx *ctx, struct vb2_buffer *vb)
> {
> if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt))
> - return ctx->postproc.dec_q[vb->index].dma;
> + return hantro_postproc_get_dec_buf_addr(ctx, vb->index);
> return vb2_dma_contig_plane_dma_addr(vb, 0);
> }
>
> @@ -485,8 +488,8 @@ vb2_to_hantro_decoded_buf(struct vb2_buffer *buf)
>
> void hantro_postproc_disable(struct hantro_ctx *ctx);
> void hantro_postproc_enable(struct hantro_ctx *ctx);
> +int hantro_postproc_init(struct hantro_ctx *ctx);
> void hantro_postproc_free(struct hantro_ctx *ctx);
> -int hantro_postproc_alloc(struct hantro_ctx *ctx);
> int hanto_postproc_enum_framesizes(struct hantro_ctx *ctx,
> struct v4l2_frmsizeenum *fsize);
>
> diff --git a/drivers/media/platform/verisilicon/hantro_drv.c b/drivers/media/platform/verisilicon/hantro_drv.c
> index a9fa05ac56a9..7f5b82eb6649 100644
> --- a/drivers/media/platform/verisilicon/hantro_drv.c
> +++ b/drivers/media/platform/verisilicon/hantro_drv.c
> @@ -235,8 +235,10 @@ queue_init(void *priv, struct vb2_queue *src_vq, struct vb2_queue *dst_vq)
> * The Kernel needs access to the JPEG destination buffer for the
> * JPEG encoder to fill in the JPEG headers.
> */
> - if (!ctx->is_encoder)
> + if (!ctx->is_encoder) {
> dst_vq->dma_attrs |= DMA_ATTR_NO_KERNEL_MAPPING;
> + dst_vq->max_num_buffers = MAX_POSTPROC_BUFFERS;
> + }
>
> dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
> dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
> diff --git a/drivers/media/platform/verisilicon/hantro_hw.h b/drivers/media/platform/verisilicon/hantro_hw.h
> index 7f33f7b07ce4..292a76ef643e 100644
> --- a/drivers/media/platform/verisilicon/hantro_hw.h
> +++ b/drivers/media/platform/verisilicon/hantro_hw.h
> @@ -40,6 +40,8 @@
>
> #define AV1_MAX_FRAME_BUF_COUNT (V4L2_AV1_TOTAL_REFS_PER_FRAME + 1)
>
> +#define MAX_POSTPROC_BUFFERS 64
> +
> struct hantro_dev;
> struct hantro_ctx;
> struct hantro_buf;
> @@ -336,7 +338,7 @@ struct hantro_av1_dec_hw_ctx {
> * @dec_q: References buffers, in decoder format.
> */
> struct hantro_postproc_ctx {
> - struct hantro_aux_buf dec_q[VB2_MAX_FRAME];
> + struct hantro_aux_buf dec_q[MAX_POSTPROC_BUFFERS];
> };
>
> /**
> diff --git a/drivers/media/platform/verisilicon/hantro_postproc.c b/drivers/media/platform/verisilicon/hantro_postproc.c
> index 8f8f17e671ce..41e93176300b 100644
> --- a/drivers/media/platform/verisilicon/hantro_postproc.c
> +++ b/drivers/media/platform/verisilicon/hantro_postproc.c
> @@ -177,9 +177,11 @@ static int hantro_postproc_g2_enum_framesizes(struct hantro_ctx *ctx,
> void hantro_postproc_free(struct hantro_ctx *ctx)
> {
> struct hantro_dev *vpu = ctx->dev;
> + struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
> + struct vb2_queue *queue = &m2m_ctx->cap_q_ctx.q;
> unsigned int i;
>
> - for (i = 0; i < VB2_MAX_FRAME; ++i) {
> + for (i = 0; i < queue->max_num_buffers; ++i) {
> struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
>
> if (priv->cpu) {
> @@ -190,20 +192,17 @@ void hantro_postproc_free(struct hantro_ctx *ctx)
> }
> }
>
> -int hantro_postproc_alloc(struct hantro_ctx *ctx)
> +static unsigned int hantro_postproc_buffer_size(struct hantro_ctx *ctx)
> {
> - struct hantro_dev *vpu = ctx->dev;
> - struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
> - struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
> - unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
> struct v4l2_pix_format_mplane pix_mp;
> const struct hantro_fmt *fmt;
> - unsigned int i, buf_size;
> + unsigned int buf_size;
>
> /* this should always pick native format */
> fmt = hantro_get_default_fmt(ctx, false, ctx->bit_depth, HANTRO_AUTO_POSTPROC);
> if (!fmt)
> - return -EINVAL;
> + return 0;
> +
> v4l2_fill_pixfmt_mp(&pix_mp, fmt->fourcc, ctx->src_fmt.width,
> ctx->src_fmt.height);
>
> @@ -221,23 +220,77 @@ int hantro_postproc_alloc(struct hantro_ctx *ctx)
> buf_size += hantro_av1_mv_size(pix_mp.width,
> pix_mp.height);
>
> - for (i = 0; i < num_buffers; ++i) {
> - struct hantro_aux_buf *priv = &ctx->postproc.dec_q[i];
> + return buf_size;
> +}
> +
> +static int hantro_postproc_alloc(struct hantro_ctx *ctx, int index)
> +{
> + struct hantro_dev *vpu = ctx->dev;
> + struct hantro_aux_buf *priv = &ctx->postproc.dec_q[index];
> + unsigned int buf_size = hantro_postproc_buffer_size(ctx);
> +
> + if (!buf_size)
> + return -EINVAL;
> +
> + /*
> + * The buffers on this queue are meant as intermediate
> + * buffers for the decoder, so no mapping is needed.
> + */
> + priv->attrs = DMA_ATTR_NO_KERNEL_MAPPING;
> + priv->cpu = dma_alloc_attrs(vpu->dev, buf_size, &priv->dma,
> + GFP_KERNEL, priv->attrs);
> + if (!priv->cpu)
> + return -ENOMEM;
> + priv->size = buf_size;
> +
> + return 0;
> +}
>
> - /*
> - * The buffers on this queue are meant as intermediate
> - * buffers for the decoder, so no mapping is needed.
> - */
> - priv->attrs = DMA_ATTR_NO_KERNEL_MAPPING;
> - priv->cpu = dma_alloc_attrs(vpu->dev, buf_size, &priv->dma,
> - GFP_KERNEL, priv->attrs);
> - if (!priv->cpu)
> - return -ENOMEM;
> - priv->size = buf_size;
> +int hantro_postproc_init(struct hantro_ctx *ctx)
> +{
> + struct v4l2_m2m_ctx *m2m_ctx = ctx->fh.m2m_ctx;
> + struct vb2_queue *cap_queue = &m2m_ctx->cap_q_ctx.q;
> + unsigned int num_buffers = vb2_get_num_buffers(cap_queue);
> + unsigned int i;
> + int ret;
> +
> + for (i = 0; i < num_buffers; i++) {
> + ret = hantro_postproc_alloc(ctx, i);
> + if (ret)
> + return ret;
> }
> +
> return 0;
> }
>
> +dma_addr_t
> +hantro_postproc_get_dec_buf_addr(struct hantro_ctx *ctx, int index)
> +{
> + struct hantro_aux_buf *priv = &ctx->postproc.dec_q[index];
> + unsigned int buf_size = hantro_postproc_buffer_size(ctx);
> + struct hantro_dev *vpu = ctx->dev;
> + int ret;
> +
> + if (priv->size < buf_size && priv->cpu) {
> + /* buffer is too small, release it */
> + dma_free_attrs(vpu->dev, priv->size, priv->cpu,
> + priv->dma, priv->attrs);
> + priv->cpu = NULL;
> + }
> +
> + if (!priv->cpu) {
> + /* buffer not already allocated, try getting a new one */
> + ret = hantro_postproc_alloc(ctx, index);
> + if (ret)
> + return 0;
> + }
> +
> + if (!priv->cpu)
> + return 0;
> +
> + return priv->dma;
> +}
> +
> static void hantro_postproc_g1_disable(struct hantro_ctx *ctx)
> {
> struct hantro_dev *vpu = ctx->dev;
> diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
> index b3ae037a50f6..f0d8b165abcd 100644
> --- a/drivers/media/platform/verisilicon/hantro_v4l2.c
> +++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
> @@ -933,7 +933,7 @@ static int hantro_start_streaming(struct vb2_queue *q, unsigned int count)
> }
>
> if (hantro_needs_postproc(ctx, ctx->vpu_dst_fmt)) {
> - ret = hantro_postproc_alloc(ctx);
> + ret = hantro_postproc_init(ctx);
> if (ret)
> goto err_codec_exit;
> }
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 48/56] media: verisilicon: Store chroma and motion vectors offset
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 14:12 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 14:12 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Store computed values of chroma and motion vectors offset because
> they depends on width and height values which change if the resolution
> change.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> drivers/media/platform/verisilicon/hantro.h | 2 ++
> drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c | 6 ++++--
> 2 files changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/platform/verisilicon/hantro.h b/drivers/media/platform/verisilicon/hantro.h
> index 0948b04a9f8d..6f5eb975d0e3 100644
> --- a/drivers/media/platform/verisilicon/hantro.h
> +++ b/drivers/media/platform/verisilicon/hantro.h
> @@ -328,6 +328,8 @@ struct hantro_vp9_decoded_buffer_info {
> /* Info needed when the decoded frame serves as a reference frame. */
> unsigned short width;
> unsigned short height;
> + size_t chroma_offset;
> + size_t mv_offset;
> u32 bit_depth : 4;
> };
>
> diff --git a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> index 6fc4b555517f..6db1c32fce4d 100644
> --- a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> +++ b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> @@ -158,9 +158,11 @@ static void config_output(struct hantro_ctx *ctx,
>
> chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
> hantro_write_addr(ctx->dev, G2_OUT_CHROMA_ADDR, chroma_addr);
> + dst->vp9.chroma_offset = chroma_offset(ctx, dec_params);
>
> mv_addr = luma_addr + mv_offset(ctx, dec_params);
> hantro_write_addr(ctx->dev, G2_OUT_MV_ADDR, mv_addr);
> + dst->vp9.mv_offset = mv_offset(ctx, dec_params);
> }
>
> struct hantro_vp9_ref_reg {
> @@ -195,7 +197,7 @@ static void config_ref(struct hantro_ctx *ctx,
> luma_addr = hantro_get_dec_buf_addr(ctx, &buf->base.vb.vb2_buf);
> hantro_write_addr(ctx->dev, ref_reg->y_base, luma_addr);
>
> - chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
> + chroma_addr = luma_addr + buf->vp9.chroma_offset;
> hantro_write_addr(ctx->dev, ref_reg->c_base, chroma_addr);
> }
>
> @@ -238,7 +240,7 @@ static void config_ref_registers(struct hantro_ctx *ctx,
> config_ref(ctx, dst, &ref_regs[2], dec_params, dec_params->alt_frame_ts);
>
> mv_addr = hantro_get_dec_buf_addr(ctx, &mv_ref->base.vb.vb2_buf) +
> - mv_offset(ctx, dec_params);
> + mv_ref->vp9.mv_offset;
> hantro_write_addr(ctx->dev, G2_REF_MV_ADDR(0), mv_addr);
>
> hantro_reg_write(ctx->dev, &vp9_last_sign_bias,
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 48/56] media: verisilicon: Store chroma and motion vectors offset
@ 2023-11-09 14:12 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 14:12 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Store computed values of chroma and motion vectors offset because
> they depends on width and height values which change if the resolution
> change.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> drivers/media/platform/verisilicon/hantro.h | 2 ++
> drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c | 6 ++++--
> 2 files changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/platform/verisilicon/hantro.h b/drivers/media/platform/verisilicon/hantro.h
> index 0948b04a9f8d..6f5eb975d0e3 100644
> --- a/drivers/media/platform/verisilicon/hantro.h
> +++ b/drivers/media/platform/verisilicon/hantro.h
> @@ -328,6 +328,8 @@ struct hantro_vp9_decoded_buffer_info {
> /* Info needed when the decoded frame serves as a reference frame. */
> unsigned short width;
> unsigned short height;
> + size_t chroma_offset;
> + size_t mv_offset;
> u32 bit_depth : 4;
> };
>
> diff --git a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> index 6fc4b555517f..6db1c32fce4d 100644
> --- a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> +++ b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> @@ -158,9 +158,11 @@ static void config_output(struct hantro_ctx *ctx,
>
> chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
> hantro_write_addr(ctx->dev, G2_OUT_CHROMA_ADDR, chroma_addr);
> + dst->vp9.chroma_offset = chroma_offset(ctx, dec_params);
>
> mv_addr = luma_addr + mv_offset(ctx, dec_params);
> hantro_write_addr(ctx->dev, G2_OUT_MV_ADDR, mv_addr);
> + dst->vp9.mv_offset = mv_offset(ctx, dec_params);
> }
>
> struct hantro_vp9_ref_reg {
> @@ -195,7 +197,7 @@ static void config_ref(struct hantro_ctx *ctx,
> luma_addr = hantro_get_dec_buf_addr(ctx, &buf->base.vb.vb2_buf);
> hantro_write_addr(ctx->dev, ref_reg->y_base, luma_addr);
>
> - chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
> + chroma_addr = luma_addr + buf->vp9.chroma_offset;
> hantro_write_addr(ctx->dev, ref_reg->c_base, chroma_addr);
> }
>
> @@ -238,7 +240,7 @@ static void config_ref_registers(struct hantro_ctx *ctx,
> config_ref(ctx, dst, &ref_regs[2], dec_params, dec_params->alt_frame_ts);
>
> mv_addr = hantro_get_dec_buf_addr(ctx, &mv_ref->base.vb.vb2_buf) +
> - mv_offset(ctx, dec_params);
> + mv_ref->vp9.mv_offset;
> hantro_write_addr(ctx->dev, G2_REF_MV_ADDR(0), mv_addr);
>
> hantro_reg_write(ctx->dev, &vp9_last_sign_bias,
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 48/56] media: verisilicon: Store chroma and motion vectors offset
@ 2023-11-09 14:12 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 14:12 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Store computed values of chroma and motion vectors offset because
> they depends on width and height values which change if the resolution
> change.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> drivers/media/platform/verisilicon/hantro.h | 2 ++
> drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c | 6 ++++--
> 2 files changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/media/platform/verisilicon/hantro.h b/drivers/media/platform/verisilicon/hantro.h
> index 0948b04a9f8d..6f5eb975d0e3 100644
> --- a/drivers/media/platform/verisilicon/hantro.h
> +++ b/drivers/media/platform/verisilicon/hantro.h
> @@ -328,6 +328,8 @@ struct hantro_vp9_decoded_buffer_info {
> /* Info needed when the decoded frame serves as a reference frame. */
> unsigned short width;
> unsigned short height;
> + size_t chroma_offset;
> + size_t mv_offset;
> u32 bit_depth : 4;
> };
>
> diff --git a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> index 6fc4b555517f..6db1c32fce4d 100644
> --- a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> +++ b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> @@ -158,9 +158,11 @@ static void config_output(struct hantro_ctx *ctx,
>
> chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
> hantro_write_addr(ctx->dev, G2_OUT_CHROMA_ADDR, chroma_addr);
> + dst->vp9.chroma_offset = chroma_offset(ctx, dec_params);
>
> mv_addr = luma_addr + mv_offset(ctx, dec_params);
> hantro_write_addr(ctx->dev, G2_OUT_MV_ADDR, mv_addr);
> + dst->vp9.mv_offset = mv_offset(ctx, dec_params);
> }
>
> struct hantro_vp9_ref_reg {
> @@ -195,7 +197,7 @@ static void config_ref(struct hantro_ctx *ctx,
> luma_addr = hantro_get_dec_buf_addr(ctx, &buf->base.vb.vb2_buf);
> hantro_write_addr(ctx->dev, ref_reg->y_base, luma_addr);
>
> - chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
> + chroma_addr = luma_addr + buf->vp9.chroma_offset;
> hantro_write_addr(ctx->dev, ref_reg->c_base, chroma_addr);
> }
>
> @@ -238,7 +240,7 @@ static void config_ref_registers(struct hantro_ctx *ctx,
> config_ref(ctx, dst, &ref_regs[2], dec_params, dec_params->alt_frame_ts);
>
> mv_addr = hantro_get_dec_buf_addr(ctx, &mv_ref->base.vb.vb2_buf) +
> - mv_offset(ctx, dec_params);
> + mv_ref->vp9.mv_offset;
> hantro_write_addr(ctx->dev, G2_REF_MV_ADDR(0), mv_addr);
>
> hantro_reg_write(ctx->dev, &vp9_last_sign_bias,
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
2023-11-09 11:27 ` Andrzej Pietrasiewicz
(?)
@ 2023-11-09 14:14 ` Paul Kocialkowski
-1 siblings, 0 replies; 399+ messages in thread
From: Paul Kocialkowski @ 2023-11-09 14:14 UTC (permalink / raw)
To: Andrzej Pietrasiewicz
Cc: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne,
linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Maxime Ripard
[-- Attachment #1: Type: text/plain, Size: 2991 bytes --]
Hi Andrej,
On Thu 09 Nov 23, 12:27, Andrzej Pietrasiewicz wrote:
> Hi Paul,
>
> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> > Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> > This allows us to change how the number of buffers is computed in the
> > future.
> >
> > Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> > Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
>
> Given you've alaredy A-b, would you be ok with adding this sentence:
>
> "While at it, check the return value of vb2_get_buffer()."
>
> to the commit message body?
Not only do I agree, but because this is done in a function returning void,
you could even:
if (WARN_ON(!vb))
continue;
so that it doesn't go completely unnoticed.
What do you think?
Cheers,
Paul
> @Benjamin:
>
> With this change, you can add my
>
> Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
>
> > CC: Maxime Ripard <mripard@kernel.org>
> > ---
> > drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
> > drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
> > 2 files changed, 14 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > index dfb401df138a..3e2843ef6cce 100644
> > --- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > @@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct cedrus_ctx *ctx)
> > vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
> > - for (i = 0; i < vq->num_buffers; i++) {
> > - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> > + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> > + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> > +
> > + if (!vb)
> > + continue;
> > +
> > + buf = vb2_to_cedrus_buffer(vb);
> > if (buf->codec.h264.mv_col_buf_size > 0) {
> > dma_free_attrs(dev->dev,
> > diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > index fc9297232456..52e94c8f2f01 100644
> > --- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > @@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct cedrus_ctx *ctx)
> > vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
> > - for (i = 0; i < vq->num_buffers; i++) {
> > - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> > + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> > + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> > +
> > + if (!vb)
> > + continue;
> > +
> > + buf = vb2_to_cedrus_buffer(vb);
> > if (buf->codec.h265.mv_col_buf_size > 0) {
> > dma_free_attrs(dev->dev,
>
--
Paul Kocialkowski, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
@ 2023-11-09 14:14 ` Paul Kocialkowski
0 siblings, 0 replies; 399+ messages in thread
From: Paul Kocialkowski @ 2023-11-09 14:14 UTC (permalink / raw)
To: Andrzej Pietrasiewicz
Cc: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne,
linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Maxime Ripard
[-- Attachment #1.1: Type: text/plain, Size: 2991 bytes --]
Hi Andrej,
On Thu 09 Nov 23, 12:27, Andrzej Pietrasiewicz wrote:
> Hi Paul,
>
> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> > Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> > This allows us to change how the number of buffers is computed in the
> > future.
> >
> > Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> > Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
>
> Given you've alaredy A-b, would you be ok with adding this sentence:
>
> "While at it, check the return value of vb2_get_buffer()."
>
> to the commit message body?
Not only do I agree, but because this is done in a function returning void,
you could even:
if (WARN_ON(!vb))
continue;
so that it doesn't go completely unnoticed.
What do you think?
Cheers,
Paul
> @Benjamin:
>
> With this change, you can add my
>
> Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
>
> > CC: Maxime Ripard <mripard@kernel.org>
> > ---
> > drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
> > drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
> > 2 files changed, 14 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > index dfb401df138a..3e2843ef6cce 100644
> > --- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > @@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct cedrus_ctx *ctx)
> > vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
> > - for (i = 0; i < vq->num_buffers; i++) {
> > - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> > + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> > + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> > +
> > + if (!vb)
> > + continue;
> > +
> > + buf = vb2_to_cedrus_buffer(vb);
> > if (buf->codec.h264.mv_col_buf_size > 0) {
> > dma_free_attrs(dev->dev,
> > diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > index fc9297232456..52e94c8f2f01 100644
> > --- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > @@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct cedrus_ctx *ctx)
> > vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
> > - for (i = 0; i < vq->num_buffers; i++) {
> > - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> > + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> > + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> > +
> > + if (!vb)
> > + continue;
> > +
> > + buf = vb2_to_cedrus_buffer(vb);
> > if (buf->codec.h265.mv_col_buf_size > 0) {
> > dma_free_attrs(dev->dev,
>
--
Paul Kocialkowski, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com
[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
[-- Attachment #2: Type: text/plain, Size: 170 bytes --]
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
@ 2023-11-09 14:14 ` Paul Kocialkowski
0 siblings, 0 replies; 399+ messages in thread
From: Paul Kocialkowski @ 2023-11-09 14:14 UTC (permalink / raw)
To: Andrzej Pietrasiewicz
Cc: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne,
linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Maxime Ripard
[-- Attachment #1.1: Type: text/plain, Size: 2991 bytes --]
Hi Andrej,
On Thu 09 Nov 23, 12:27, Andrzej Pietrasiewicz wrote:
> Hi Paul,
>
> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> > Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
> > This allows us to change how the number of buffers is computed in the
> > future.
> >
> > Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> > Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
>
> Given you've alaredy A-b, would you be ok with adding this sentence:
>
> "While at it, check the return value of vb2_get_buffer()."
>
> to the commit message body?
Not only do I agree, but because this is done in a function returning void,
you could even:
if (WARN_ON(!vb))
continue;
so that it doesn't go completely unnoticed.
What do you think?
Cheers,
Paul
> @Benjamin:
>
> With this change, you can add my
>
> Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
>
> > CC: Maxime Ripard <mripard@kernel.org>
> > ---
> > drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
> > drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
> > 2 files changed, 14 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > index dfb401df138a..3e2843ef6cce 100644
> > --- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > @@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct cedrus_ctx *ctx)
> > vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
> > - for (i = 0; i < vq->num_buffers; i++) {
> > - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> > + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> > + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> > +
> > + if (!vb)
> > + continue;
> > +
> > + buf = vb2_to_cedrus_buffer(vb);
> > if (buf->codec.h264.mv_col_buf_size > 0) {
> > dma_free_attrs(dev->dev,
> > diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > index fc9297232456..52e94c8f2f01 100644
> > --- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > @@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct cedrus_ctx *ctx)
> > vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
> > - for (i = 0; i < vq->num_buffers; i++) {
> > - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> > + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> > + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> > +
> > + if (!vb)
> > + continue;
> > +
> > + buf = vb2_to_cedrus_buffer(vb);
> > if (buf->codec.h265.mv_col_buf_size > 0) {
> > dma_free_attrs(dev->dev,
>
--
Paul Kocialkowski, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com
[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
[-- Attachment #2: Type: text/plain, Size: 176 bytes --]
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 49/56] media: verisilicon: g2: Use common helpers to compute chroma and mv offsets
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 14:25 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 14:25 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> HEVC and VP9 are running on the same hardware and share the same
> chroma and motion vectors offset constraint.
> Create common helpers functions for these computation.
> Source and destination buffer height may not be the same because
> alignment constraint are different so use destination height to
> compute chroma offset because we target this buffer as hardware
> output.
> To be able to use the helpers in both VP9 HEVC code remove dec_params
> and use context->bit_depth instead.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> .../media/platform/verisilicon/hantro_g2.c | 14 ++++++++++
> .../platform/verisilicon/hantro_g2_hevc_dec.c | 18 ++-----------
> .../platform/verisilicon/hantro_g2_vp9_dec.c | 26 +++----------------
> .../media/platform/verisilicon/hantro_hw.h | 3 +++
> 4 files changed, 23 insertions(+), 38 deletions(-)
>
> diff --git a/drivers/media/platform/verisilicon/hantro_g2.c b/drivers/media/platform/verisilicon/hantro_g2.c
> index ee5f14c5f8f2..b880a6849d58 100644
> --- a/drivers/media/platform/verisilicon/hantro_g2.c
> +++ b/drivers/media/platform/verisilicon/hantro_g2.c
> @@ -8,6 +8,8 @@
> #include "hantro_hw.h"
> #include "hantro_g2_regs.h"
>
> +#define G2_ALIGN 16
> +
> void hantro_g2_check_idle(struct hantro_dev *vpu)
> {
> int i;
> @@ -42,3 +44,15 @@ irqreturn_t hantro_g2_irq(int irq, void *dev_id)
>
> return IRQ_HANDLED;
> }
> +
> +size_t hantro_g2_chroma_offset(struct hantro_ctx *ctx)
> +{
> + return ctx->dst_fmt.width * ctx->dst_fmt.height * ctx->bit_depth / 8;
> +}
> +
> +size_t hantro_g2_motion_vectors_offset(struct hantro_ctx *ctx)
> +{
> + size_t cr_offset = hantro_g2_chroma_offset(ctx);
> +
> + return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
> +}
> diff --git a/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c b/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
> index a9d4ac84a8d8..d3f8c33eb16c 100644
> --- a/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
> +++ b/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
> @@ -8,20 +8,6 @@
> #include "hantro_hw.h"
> #include "hantro_g2_regs.h"
>
> -#define G2_ALIGN 16
> -
> -static size_t hantro_hevc_chroma_offset(struct hantro_ctx *ctx)
> -{
> - return ctx->dst_fmt.width * ctx->dst_fmt.height * ctx->bit_depth / 8;
> -}
> -
> -static size_t hantro_hevc_motion_vectors_offset(struct hantro_ctx *ctx)
> -{
> - size_t cr_offset = hantro_hevc_chroma_offset(ctx);
> -
> - return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
> -}
> -
> static void prepare_tile_info_buffer(struct hantro_ctx *ctx)
> {
> struct hantro_dev *vpu = ctx->dev;
> @@ -384,8 +370,8 @@ static int set_ref(struct hantro_ctx *ctx)
> struct hantro_dev *vpu = ctx->dev;
> struct vb2_v4l2_buffer *vb2_dst;
> struct hantro_decoded_buffer *dst;
> - size_t cr_offset = hantro_hevc_chroma_offset(ctx);
> - size_t mv_offset = hantro_hevc_motion_vectors_offset(ctx);
> + size_t cr_offset = hantro_g2_chroma_offset(ctx);
> + size_t mv_offset = hantro_g2_motion_vectors_offset(ctx);
> u32 max_ref_frames;
> u16 dpb_longterm_e;
> static const struct hantro_reg cur_poc[] = {
> diff --git a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> index 6db1c32fce4d..342e543dee4c 100644
> --- a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> +++ b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> @@ -16,8 +16,6 @@
> #include "hantro_vp9.h"
> #include "hantro_g2_regs.h"
>
> -#define G2_ALIGN 16
> -
> enum hantro_ref_frames {
> INTRA_FRAME = 0,
> LAST_FRAME = 1,
> @@ -90,22 +88,6 @@ static int start_prepare_run(struct hantro_ctx *ctx, const struct v4l2_ctrl_vp9_
> return 0;
> }
>
> -static size_t chroma_offset(const struct hantro_ctx *ctx,
> - const struct v4l2_ctrl_vp9_frame *dec_params)
> -{
> - int bytes_per_pixel = dec_params->bit_depth == 8 ? 1 : 2;
> -
> - return ctx->src_fmt.width * ctx->src_fmt.height * bytes_per_pixel;
> -}
> -
> -static size_t mv_offset(const struct hantro_ctx *ctx,
> - const struct v4l2_ctrl_vp9_frame *dec_params)
> -{
> - size_t cr_offset = chroma_offset(ctx, dec_params);
> -
> - return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
> -}
> -
> static struct hantro_decoded_buffer *
> get_ref_buf(struct hantro_ctx *ctx, struct vb2_v4l2_buffer *dst, u64 timestamp)
> {
> @@ -156,13 +138,13 @@ static void config_output(struct hantro_ctx *ctx,
> luma_addr = hantro_get_dec_buf_addr(ctx, &dst->base.vb.vb2_buf);
> hantro_write_addr(ctx->dev, G2_OUT_LUMA_ADDR, luma_addr);
>
> - chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
> + chroma_addr = luma_addr + hantro_g2_chroma_offset(ctx);
> hantro_write_addr(ctx->dev, G2_OUT_CHROMA_ADDR, chroma_addr);
> - dst->vp9.chroma_offset = chroma_offset(ctx, dec_params);
> + dst->vp9.chroma_offset = hantro_g2_chroma_offset(ctx);
>
> - mv_addr = luma_addr + mv_offset(ctx, dec_params);
> + mv_addr = luma_addr + hantro_g2_motion_vectors_offset(ctx);
> hantro_write_addr(ctx->dev, G2_OUT_MV_ADDR, mv_addr);
> - dst->vp9.mv_offset = mv_offset(ctx, dec_params);
> + dst->vp9.mv_offset = hantro_g2_motion_vectors_offset(ctx);
> }
>
> struct hantro_vp9_ref_reg {
> diff --git a/drivers/media/platform/verisilicon/hantro_hw.h b/drivers/media/platform/verisilicon/hantro_hw.h
> index 292a76ef643e..9aec8a79acdc 100644
> --- a/drivers/media/platform/verisilicon/hantro_hw.h
> +++ b/drivers/media/platform/verisilicon/hantro_hw.h
> @@ -521,6 +521,9 @@ hantro_av1_mv_size(unsigned int width, unsigned int height)
> return ALIGN(num_sbs * 384, 16) * 2 + 512;
> }
>
> +size_t hantro_g2_chroma_offset(struct hantro_ctx *ctx);
> +size_t hantro_g2_motion_vectors_offset(struct hantro_ctx *ctx);
> +
> int hantro_g1_mpeg2_dec_run(struct hantro_ctx *ctx);
> int rockchip_vpu2_mpeg2_dec_run(struct hantro_ctx *ctx);
> void hantro_mpeg2_dec_copy_qtable(u8 *qtable,
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 49/56] media: verisilicon: g2: Use common helpers to compute chroma and mv offsets
@ 2023-11-09 14:25 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 14:25 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> HEVC and VP9 are running on the same hardware and share the same
> chroma and motion vectors offset constraint.
> Create common helpers functions for these computation.
> Source and destination buffer height may not be the same because
> alignment constraint are different so use destination height to
> compute chroma offset because we target this buffer as hardware
> output.
> To be able to use the helpers in both VP9 HEVC code remove dec_params
> and use context->bit_depth instead.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> .../media/platform/verisilicon/hantro_g2.c | 14 ++++++++++
> .../platform/verisilicon/hantro_g2_hevc_dec.c | 18 ++-----------
> .../platform/verisilicon/hantro_g2_vp9_dec.c | 26 +++----------------
> .../media/platform/verisilicon/hantro_hw.h | 3 +++
> 4 files changed, 23 insertions(+), 38 deletions(-)
>
> diff --git a/drivers/media/platform/verisilicon/hantro_g2.c b/drivers/media/platform/verisilicon/hantro_g2.c
> index ee5f14c5f8f2..b880a6849d58 100644
> --- a/drivers/media/platform/verisilicon/hantro_g2.c
> +++ b/drivers/media/platform/verisilicon/hantro_g2.c
> @@ -8,6 +8,8 @@
> #include "hantro_hw.h"
> #include "hantro_g2_regs.h"
>
> +#define G2_ALIGN 16
> +
> void hantro_g2_check_idle(struct hantro_dev *vpu)
> {
> int i;
> @@ -42,3 +44,15 @@ irqreturn_t hantro_g2_irq(int irq, void *dev_id)
>
> return IRQ_HANDLED;
> }
> +
> +size_t hantro_g2_chroma_offset(struct hantro_ctx *ctx)
> +{
> + return ctx->dst_fmt.width * ctx->dst_fmt.height * ctx->bit_depth / 8;
> +}
> +
> +size_t hantro_g2_motion_vectors_offset(struct hantro_ctx *ctx)
> +{
> + size_t cr_offset = hantro_g2_chroma_offset(ctx);
> +
> + return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
> +}
> diff --git a/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c b/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
> index a9d4ac84a8d8..d3f8c33eb16c 100644
> --- a/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
> +++ b/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
> @@ -8,20 +8,6 @@
> #include "hantro_hw.h"
> #include "hantro_g2_regs.h"
>
> -#define G2_ALIGN 16
> -
> -static size_t hantro_hevc_chroma_offset(struct hantro_ctx *ctx)
> -{
> - return ctx->dst_fmt.width * ctx->dst_fmt.height * ctx->bit_depth / 8;
> -}
> -
> -static size_t hantro_hevc_motion_vectors_offset(struct hantro_ctx *ctx)
> -{
> - size_t cr_offset = hantro_hevc_chroma_offset(ctx);
> -
> - return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
> -}
> -
> static void prepare_tile_info_buffer(struct hantro_ctx *ctx)
> {
> struct hantro_dev *vpu = ctx->dev;
> @@ -384,8 +370,8 @@ static int set_ref(struct hantro_ctx *ctx)
> struct hantro_dev *vpu = ctx->dev;
> struct vb2_v4l2_buffer *vb2_dst;
> struct hantro_decoded_buffer *dst;
> - size_t cr_offset = hantro_hevc_chroma_offset(ctx);
> - size_t mv_offset = hantro_hevc_motion_vectors_offset(ctx);
> + size_t cr_offset = hantro_g2_chroma_offset(ctx);
> + size_t mv_offset = hantro_g2_motion_vectors_offset(ctx);
> u32 max_ref_frames;
> u16 dpb_longterm_e;
> static const struct hantro_reg cur_poc[] = {
> diff --git a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> index 6db1c32fce4d..342e543dee4c 100644
> --- a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> +++ b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> @@ -16,8 +16,6 @@
> #include "hantro_vp9.h"
> #include "hantro_g2_regs.h"
>
> -#define G2_ALIGN 16
> -
> enum hantro_ref_frames {
> INTRA_FRAME = 0,
> LAST_FRAME = 1,
> @@ -90,22 +88,6 @@ static int start_prepare_run(struct hantro_ctx *ctx, const struct v4l2_ctrl_vp9_
> return 0;
> }
>
> -static size_t chroma_offset(const struct hantro_ctx *ctx,
> - const struct v4l2_ctrl_vp9_frame *dec_params)
> -{
> - int bytes_per_pixel = dec_params->bit_depth == 8 ? 1 : 2;
> -
> - return ctx->src_fmt.width * ctx->src_fmt.height * bytes_per_pixel;
> -}
> -
> -static size_t mv_offset(const struct hantro_ctx *ctx,
> - const struct v4l2_ctrl_vp9_frame *dec_params)
> -{
> - size_t cr_offset = chroma_offset(ctx, dec_params);
> -
> - return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
> -}
> -
> static struct hantro_decoded_buffer *
> get_ref_buf(struct hantro_ctx *ctx, struct vb2_v4l2_buffer *dst, u64 timestamp)
> {
> @@ -156,13 +138,13 @@ static void config_output(struct hantro_ctx *ctx,
> luma_addr = hantro_get_dec_buf_addr(ctx, &dst->base.vb.vb2_buf);
> hantro_write_addr(ctx->dev, G2_OUT_LUMA_ADDR, luma_addr);
>
> - chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
> + chroma_addr = luma_addr + hantro_g2_chroma_offset(ctx);
> hantro_write_addr(ctx->dev, G2_OUT_CHROMA_ADDR, chroma_addr);
> - dst->vp9.chroma_offset = chroma_offset(ctx, dec_params);
> + dst->vp9.chroma_offset = hantro_g2_chroma_offset(ctx);
>
> - mv_addr = luma_addr + mv_offset(ctx, dec_params);
> + mv_addr = luma_addr + hantro_g2_motion_vectors_offset(ctx);
> hantro_write_addr(ctx->dev, G2_OUT_MV_ADDR, mv_addr);
> - dst->vp9.mv_offset = mv_offset(ctx, dec_params);
> + dst->vp9.mv_offset = hantro_g2_motion_vectors_offset(ctx);
> }
>
> struct hantro_vp9_ref_reg {
> diff --git a/drivers/media/platform/verisilicon/hantro_hw.h b/drivers/media/platform/verisilicon/hantro_hw.h
> index 292a76ef643e..9aec8a79acdc 100644
> --- a/drivers/media/platform/verisilicon/hantro_hw.h
> +++ b/drivers/media/platform/verisilicon/hantro_hw.h
> @@ -521,6 +521,9 @@ hantro_av1_mv_size(unsigned int width, unsigned int height)
> return ALIGN(num_sbs * 384, 16) * 2 + 512;
> }
>
> +size_t hantro_g2_chroma_offset(struct hantro_ctx *ctx);
> +size_t hantro_g2_motion_vectors_offset(struct hantro_ctx *ctx);
> +
> int hantro_g1_mpeg2_dec_run(struct hantro_ctx *ctx);
> int rockchip_vpu2_mpeg2_dec_run(struct hantro_ctx *ctx);
> void hantro_mpeg2_dec_copy_qtable(u8 *qtable,
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 49/56] media: verisilicon: g2: Use common helpers to compute chroma and mv offsets
@ 2023-11-09 14:25 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 14:25 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> HEVC and VP9 are running on the same hardware and share the same
> chroma and motion vectors offset constraint.
> Create common helpers functions for these computation.
> Source and destination buffer height may not be the same because
> alignment constraint are different so use destination height to
> compute chroma offset because we target this buffer as hardware
> output.
> To be able to use the helpers in both VP9 HEVC code remove dec_params
> and use context->bit_depth instead.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> .../media/platform/verisilicon/hantro_g2.c | 14 ++++++++++
> .../platform/verisilicon/hantro_g2_hevc_dec.c | 18 ++-----------
> .../platform/verisilicon/hantro_g2_vp9_dec.c | 26 +++----------------
> .../media/platform/verisilicon/hantro_hw.h | 3 +++
> 4 files changed, 23 insertions(+), 38 deletions(-)
>
> diff --git a/drivers/media/platform/verisilicon/hantro_g2.c b/drivers/media/platform/verisilicon/hantro_g2.c
> index ee5f14c5f8f2..b880a6849d58 100644
> --- a/drivers/media/platform/verisilicon/hantro_g2.c
> +++ b/drivers/media/platform/verisilicon/hantro_g2.c
> @@ -8,6 +8,8 @@
> #include "hantro_hw.h"
> #include "hantro_g2_regs.h"
>
> +#define G2_ALIGN 16
> +
> void hantro_g2_check_idle(struct hantro_dev *vpu)
> {
> int i;
> @@ -42,3 +44,15 @@ irqreturn_t hantro_g2_irq(int irq, void *dev_id)
>
> return IRQ_HANDLED;
> }
> +
> +size_t hantro_g2_chroma_offset(struct hantro_ctx *ctx)
> +{
> + return ctx->dst_fmt.width * ctx->dst_fmt.height * ctx->bit_depth / 8;
> +}
> +
> +size_t hantro_g2_motion_vectors_offset(struct hantro_ctx *ctx)
> +{
> + size_t cr_offset = hantro_g2_chroma_offset(ctx);
> +
> + return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
> +}
> diff --git a/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c b/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
> index a9d4ac84a8d8..d3f8c33eb16c 100644
> --- a/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
> +++ b/drivers/media/platform/verisilicon/hantro_g2_hevc_dec.c
> @@ -8,20 +8,6 @@
> #include "hantro_hw.h"
> #include "hantro_g2_regs.h"
>
> -#define G2_ALIGN 16
> -
> -static size_t hantro_hevc_chroma_offset(struct hantro_ctx *ctx)
> -{
> - return ctx->dst_fmt.width * ctx->dst_fmt.height * ctx->bit_depth / 8;
> -}
> -
> -static size_t hantro_hevc_motion_vectors_offset(struct hantro_ctx *ctx)
> -{
> - size_t cr_offset = hantro_hevc_chroma_offset(ctx);
> -
> - return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
> -}
> -
> static void prepare_tile_info_buffer(struct hantro_ctx *ctx)
> {
> struct hantro_dev *vpu = ctx->dev;
> @@ -384,8 +370,8 @@ static int set_ref(struct hantro_ctx *ctx)
> struct hantro_dev *vpu = ctx->dev;
> struct vb2_v4l2_buffer *vb2_dst;
> struct hantro_decoded_buffer *dst;
> - size_t cr_offset = hantro_hevc_chroma_offset(ctx);
> - size_t mv_offset = hantro_hevc_motion_vectors_offset(ctx);
> + size_t cr_offset = hantro_g2_chroma_offset(ctx);
> + size_t mv_offset = hantro_g2_motion_vectors_offset(ctx);
> u32 max_ref_frames;
> u16 dpb_longterm_e;
> static const struct hantro_reg cur_poc[] = {
> diff --git a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> index 6db1c32fce4d..342e543dee4c 100644
> --- a/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> +++ b/drivers/media/platform/verisilicon/hantro_g2_vp9_dec.c
> @@ -16,8 +16,6 @@
> #include "hantro_vp9.h"
> #include "hantro_g2_regs.h"
>
> -#define G2_ALIGN 16
> -
> enum hantro_ref_frames {
> INTRA_FRAME = 0,
> LAST_FRAME = 1,
> @@ -90,22 +88,6 @@ static int start_prepare_run(struct hantro_ctx *ctx, const struct v4l2_ctrl_vp9_
> return 0;
> }
>
> -static size_t chroma_offset(const struct hantro_ctx *ctx,
> - const struct v4l2_ctrl_vp9_frame *dec_params)
> -{
> - int bytes_per_pixel = dec_params->bit_depth == 8 ? 1 : 2;
> -
> - return ctx->src_fmt.width * ctx->src_fmt.height * bytes_per_pixel;
> -}
> -
> -static size_t mv_offset(const struct hantro_ctx *ctx,
> - const struct v4l2_ctrl_vp9_frame *dec_params)
> -{
> - size_t cr_offset = chroma_offset(ctx, dec_params);
> -
> - return ALIGN((cr_offset * 3) / 2, G2_ALIGN);
> -}
> -
> static struct hantro_decoded_buffer *
> get_ref_buf(struct hantro_ctx *ctx, struct vb2_v4l2_buffer *dst, u64 timestamp)
> {
> @@ -156,13 +138,13 @@ static void config_output(struct hantro_ctx *ctx,
> luma_addr = hantro_get_dec_buf_addr(ctx, &dst->base.vb.vb2_buf);
> hantro_write_addr(ctx->dev, G2_OUT_LUMA_ADDR, luma_addr);
>
> - chroma_addr = luma_addr + chroma_offset(ctx, dec_params);
> + chroma_addr = luma_addr + hantro_g2_chroma_offset(ctx);
> hantro_write_addr(ctx->dev, G2_OUT_CHROMA_ADDR, chroma_addr);
> - dst->vp9.chroma_offset = chroma_offset(ctx, dec_params);
> + dst->vp9.chroma_offset = hantro_g2_chroma_offset(ctx);
>
> - mv_addr = luma_addr + mv_offset(ctx, dec_params);
> + mv_addr = luma_addr + hantro_g2_motion_vectors_offset(ctx);
> hantro_write_addr(ctx->dev, G2_OUT_MV_ADDR, mv_addr);
> - dst->vp9.mv_offset = mv_offset(ctx, dec_params);
> + dst->vp9.mv_offset = hantro_g2_motion_vectors_offset(ctx);
> }
>
> struct hantro_vp9_ref_reg {
> diff --git a/drivers/media/platform/verisilicon/hantro_hw.h b/drivers/media/platform/verisilicon/hantro_hw.h
> index 292a76ef643e..9aec8a79acdc 100644
> --- a/drivers/media/platform/verisilicon/hantro_hw.h
> +++ b/drivers/media/platform/verisilicon/hantro_hw.h
> @@ -521,6 +521,9 @@ hantro_av1_mv_size(unsigned int width, unsigned int height)
> return ALIGN(num_sbs * 384, 16) * 2 + 512;
> }
>
> +size_t hantro_g2_chroma_offset(struct hantro_ctx *ctx);
> +size_t hantro_g2_motion_vectors_offset(struct hantro_ctx *ctx);
> +
> int hantro_g1_mpeg2_dec_run(struct hantro_ctx *ctx);
> int rockchip_vpu2_mpeg2_dec_run(struct hantro_ctx *ctx);
> void hantro_mpeg2_dec_copy_qtable(u8 *qtable,
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 50/56] media: verisilicon: vp9: Allow to change resolution while streaming
2023-10-31 16:30 ` Benjamin Gaignard
(?)
@ 2023-11-09 14:59 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 14:59 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Remove all checks that prohibit to set a new format while streaming.
> This allow to change dynamically the resolution if the pixel format
> remains the same.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> .../media/platform/verisilicon/hantro_v4l2.c | 24 +++----------------
> 1 file changed, 3 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
> index f0d8b165abcd..27a1e77cca38 100644
> --- a/drivers/media/platform/verisilicon/hantro_v4l2.c
> +++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
> @@ -514,25 +514,14 @@ static int hantro_set_fmt_out(struct hantro_ctx *ctx,
> return ret;
>
> if (!ctx->is_encoder) {
> - struct vb2_queue *peer_vq;
> -
> /*
> * In order to support dynamic resolution change,
> * the decoder admits a resolution change, as long
> - * as the pixelformat remains. Can't be done if streaming.
> - */
> - if (vb2_is_streaming(vq) || (vb2_is_busy(vq) &&
> - pix_mp->pixelformat != ctx->src_fmt.pixelformat))
> - return -EBUSY;
> - /*
> - * Since format change on the OUTPUT queue will reset
> - * the CAPTURE queue, we can't allow doing so
> - * when the CAPTURE queue has buffers allocated.
> + * as the pixelformat remains.
> */
> - peer_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
> - V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
> - if (vb2_is_busy(peer_vq))
> + if (vb2_is_streaming(vq) && pix_mp->pixelformat != ctx->src_fmt.pixelformat) {
> return -EBUSY;
> + }
> } else {
> /*
> * The encoder doesn't admit a format change if
> @@ -577,15 +566,8 @@ static int hantro_set_fmt_out(struct hantro_ctx *ctx,
> static int hantro_set_fmt_cap(struct hantro_ctx *ctx,
> struct v4l2_pix_format_mplane *pix_mp)
> {
> - struct vb2_queue *vq;
> int ret;
>
> - /* Change not allowed if queue is busy. */
> - vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
> - V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
> - if (vb2_is_busy(vq))
> - return -EBUSY;
> -
> if (ctx->is_encoder) {
> struct vb2_queue *peer_vq;
>
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 50/56] media: verisilicon: vp9: Allow to change resolution while streaming
@ 2023-11-09 14:59 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 14:59 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Remove all checks that prohibit to set a new format while streaming.
> This allow to change dynamically the resolution if the pixel format
> remains the same.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> .../media/platform/verisilicon/hantro_v4l2.c | 24 +++----------------
> 1 file changed, 3 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
> index f0d8b165abcd..27a1e77cca38 100644
> --- a/drivers/media/platform/verisilicon/hantro_v4l2.c
> +++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
> @@ -514,25 +514,14 @@ static int hantro_set_fmt_out(struct hantro_ctx *ctx,
> return ret;
>
> if (!ctx->is_encoder) {
> - struct vb2_queue *peer_vq;
> -
> /*
> * In order to support dynamic resolution change,
> * the decoder admits a resolution change, as long
> - * as the pixelformat remains. Can't be done if streaming.
> - */
> - if (vb2_is_streaming(vq) || (vb2_is_busy(vq) &&
> - pix_mp->pixelformat != ctx->src_fmt.pixelformat))
> - return -EBUSY;
> - /*
> - * Since format change on the OUTPUT queue will reset
> - * the CAPTURE queue, we can't allow doing so
> - * when the CAPTURE queue has buffers allocated.
> + * as the pixelformat remains.
> */
> - peer_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
> - V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
> - if (vb2_is_busy(peer_vq))
> + if (vb2_is_streaming(vq) && pix_mp->pixelformat != ctx->src_fmt.pixelformat) {
> return -EBUSY;
> + }
> } else {
> /*
> * The encoder doesn't admit a format change if
> @@ -577,15 +566,8 @@ static int hantro_set_fmt_out(struct hantro_ctx *ctx,
> static int hantro_set_fmt_cap(struct hantro_ctx *ctx,
> struct v4l2_pix_format_mplane *pix_mp)
> {
> - struct vb2_queue *vq;
> int ret;
>
> - /* Change not allowed if queue is busy. */
> - vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
> - V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
> - if (vb2_is_busy(vq))
> - return -EBUSY;
> -
> if (ctx->is_encoder) {
> struct vb2_queue *peer_vq;
>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 50/56] media: verisilicon: vp9: Allow to change resolution while streaming
@ 2023-11-09 14:59 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 14:59 UTC (permalink / raw)
To: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne
Cc: linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel
W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> Remove all checks that prohibit to set a new format while streaming.
> This allow to change dynamically the resolution if the pixel format
> remains the same.
>
> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> CC: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
> CC: Philipp Zabel <p.zabel@pengutronix.de>
> ---
> .../media/platform/verisilicon/hantro_v4l2.c | 24 +++----------------
> 1 file changed, 3 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/media/platform/verisilicon/hantro_v4l2.c b/drivers/media/platform/verisilicon/hantro_v4l2.c
> index f0d8b165abcd..27a1e77cca38 100644
> --- a/drivers/media/platform/verisilicon/hantro_v4l2.c
> +++ b/drivers/media/platform/verisilicon/hantro_v4l2.c
> @@ -514,25 +514,14 @@ static int hantro_set_fmt_out(struct hantro_ctx *ctx,
> return ret;
>
> if (!ctx->is_encoder) {
> - struct vb2_queue *peer_vq;
> -
> /*
> * In order to support dynamic resolution change,
> * the decoder admits a resolution change, as long
> - * as the pixelformat remains. Can't be done if streaming.
> - */
> - if (vb2_is_streaming(vq) || (vb2_is_busy(vq) &&
> - pix_mp->pixelformat != ctx->src_fmt.pixelformat))
> - return -EBUSY;
> - /*
> - * Since format change on the OUTPUT queue will reset
> - * the CAPTURE queue, we can't allow doing so
> - * when the CAPTURE queue has buffers allocated.
> + * as the pixelformat remains.
> */
> - peer_vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
> - V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
> - if (vb2_is_busy(peer_vq))
> + if (vb2_is_streaming(vq) && pix_mp->pixelformat != ctx->src_fmt.pixelformat) {
> return -EBUSY;
> + }
> } else {
> /*
> * The encoder doesn't admit a format change if
> @@ -577,15 +566,8 @@ static int hantro_set_fmt_out(struct hantro_ctx *ctx,
> static int hantro_set_fmt_cap(struct hantro_ctx *ctx,
> struct v4l2_pix_format_mplane *pix_mp)
> {
> - struct vb2_queue *vq;
> int ret;
>
> - /* Change not allowed if queue is busy. */
> - vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
> - V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE);
> - if (vb2_is_busy(vq))
> - return -EBUSY;
> -
> if (ctx->is_encoder) {
> struct vb2_queue *peer_vq;
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
2023-11-09 14:14 ` Paul Kocialkowski
(?)
@ 2023-11-09 15:48 ` Andrzej Pietrasiewicz
-1 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 15:48 UTC (permalink / raw)
To: Paul Kocialkowski
Cc: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne,
linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Maxime Ripard
Hi Paul,
W dniu 9.11.2023 o 15:14, Paul Kocialkowski pisze:
> Hi Andrzej,
>
> On Thu 09 Nov 23, 12:27, Andrzej Pietrasiewicz wrote:
>> Hi Paul,
>>
>> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
>>> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
>>> This allows us to change how the number of buffers is computed in the
>>> future.
>>>
>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>>> Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
>>
>> Given you've alaredy A-b, would you be ok with adding this sentence:
>>
>> "While at it, check the return value of vb2_get_buffer()."
>>
>> to the commit message body?
>
> Not only do I agree, but because this is done in a function returning void,
> you could even:
>
> if (WARN_ON(!vb))
> continue;
>
> so that it doesn't go completely unnoticed.
>
> What do you think?
>
I'd ask Benjamin.
But my take on the direction of changes is that ultimately
there will be "holes" in the array of allocated buffers (hence the
bitmap to track which slots are used and which are not). In other words,
getting a NULL sometimes will be an expected situation, and a WARN() will
not be appropriate for an expected situation.
@Benjamin?
Regards,
Andrzej
> Cheers,
>
> Paul
>
>> @Benjamin:
>>
>> With this change, you can add my
>>
>> Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
>>
>>> CC: Maxime Ripard <mripard@kernel.org>
>>> ---
>>> drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
>>> drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
>>> 2 files changed, 14 insertions(+), 4 deletions(-)
>>>
>>> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>> index dfb401df138a..3e2843ef6cce 100644
>>> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>> @@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct cedrus_ctx *ctx)
>>> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
>>> - for (i = 0; i < vq->num_buffers; i++) {
>>> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
>>> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
>>> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
>>> +
>>> + if (!vb)
>>> + continue;
>>> +
>>> + buf = vb2_to_cedrus_buffer(vb);
>>> if (buf->codec.h264.mv_col_buf_size > 0) {
>>> dma_free_attrs(dev->dev,
>>> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>> index fc9297232456..52e94c8f2f01 100644
>>> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>> @@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct cedrus_ctx *ctx)
>>> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
>>> - for (i = 0; i < vq->num_buffers; i++) {
>>> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
>>> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
>>> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
>>> +
>>> + if (!vb)
>>> + continue;
>>> +
>>> + buf = vb2_to_cedrus_buffer(vb);
>>> if (buf->codec.h265.mv_col_buf_size > 0) {
>>> dma_free_attrs(dev->dev,
>>
>
>
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
@ 2023-11-09 15:48 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 15:48 UTC (permalink / raw)
To: Paul Kocialkowski
Cc: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne,
linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Maxime Ripard
Hi Paul,
W dniu 9.11.2023 o 15:14, Paul Kocialkowski pisze:
> Hi Andrzej,
>
> On Thu 09 Nov 23, 12:27, Andrzej Pietrasiewicz wrote:
>> Hi Paul,
>>
>> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
>>> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
>>> This allows us to change how the number of buffers is computed in the
>>> future.
>>>
>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>>> Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
>>
>> Given you've alaredy A-b, would you be ok with adding this sentence:
>>
>> "While at it, check the return value of vb2_get_buffer()."
>>
>> to the commit message body?
>
> Not only do I agree, but because this is done in a function returning void,
> you could even:
>
> if (WARN_ON(!vb))
> continue;
>
> so that it doesn't go completely unnoticed.
>
> What do you think?
>
I'd ask Benjamin.
But my take on the direction of changes is that ultimately
there will be "holes" in the array of allocated buffers (hence the
bitmap to track which slots are used and which are not). In other words,
getting a NULL sometimes will be an expected situation, and a WARN() will
not be appropriate for an expected situation.
@Benjamin?
Regards,
Andrzej
> Cheers,
>
> Paul
>
>> @Benjamin:
>>
>> With this change, you can add my
>>
>> Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
>>
>>> CC: Maxime Ripard <mripard@kernel.org>
>>> ---
>>> drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
>>> drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
>>> 2 files changed, 14 insertions(+), 4 deletions(-)
>>>
>>> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>> index dfb401df138a..3e2843ef6cce 100644
>>> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>> @@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct cedrus_ctx *ctx)
>>> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
>>> - for (i = 0; i < vq->num_buffers; i++) {
>>> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
>>> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
>>> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
>>> +
>>> + if (!vb)
>>> + continue;
>>> +
>>> + buf = vb2_to_cedrus_buffer(vb);
>>> if (buf->codec.h264.mv_col_buf_size > 0) {
>>> dma_free_attrs(dev->dev,
>>> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>> index fc9297232456..52e94c8f2f01 100644
>>> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>> @@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct cedrus_ctx *ctx)
>>> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
>>> - for (i = 0; i < vq->num_buffers; i++) {
>>> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
>>> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
>>> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
>>> +
>>> + if (!vb)
>>> + continue;
>>> +
>>> + buf = vb2_to_cedrus_buffer(vb);
>>> if (buf->codec.h265.mv_col_buf_size > 0) {
>>> dma_free_attrs(dev->dev,
>>
>
>
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
@ 2023-11-09 15:48 ` Andrzej Pietrasiewicz
0 siblings, 0 replies; 399+ messages in thread
From: Andrzej Pietrasiewicz @ 2023-11-09 15:48 UTC (permalink / raw)
To: Paul Kocialkowski
Cc: Benjamin Gaignard, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne,
linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Maxime Ripard
Hi Paul,
W dniu 9.11.2023 o 15:14, Paul Kocialkowski pisze:
> Hi Andrzej,
>
> On Thu 09 Nov 23, 12:27, Andrzej Pietrasiewicz wrote:
>> Hi Paul,
>>
>> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
>>> Use vb2_get_num_buffers() to avoid using queue num_buffers field directly.
>>> This allows us to change how the number of buffers is computed in the
>>> future.
>>>
>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>>> Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
>>
>> Given you've alaredy A-b, would you be ok with adding this sentence:
>>
>> "While at it, check the return value of vb2_get_buffer()."
>>
>> to the commit message body?
>
> Not only do I agree, but because this is done in a function returning void,
> you could even:
>
> if (WARN_ON(!vb))
> continue;
>
> so that it doesn't go completely unnoticed.
>
> What do you think?
>
I'd ask Benjamin.
But my take on the direction of changes is that ultimately
there will be "holes" in the array of allocated buffers (hence the
bitmap to track which slots are used and which are not). In other words,
getting a NULL sometimes will be an expected situation, and a WARN() will
not be appropriate for an expected situation.
@Benjamin?
Regards,
Andrzej
> Cheers,
>
> Paul
>
>> @Benjamin:
>>
>> With this change, you can add my
>>
>> Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
>>
>>> CC: Maxime Ripard <mripard@kernel.org>
>>> ---
>>> drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
>>> drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
>>> 2 files changed, 14 insertions(+), 4 deletions(-)
>>>
>>> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>> index dfb401df138a..3e2843ef6cce 100644
>>> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>> @@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct cedrus_ctx *ctx)
>>> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
>>> - for (i = 0; i < vq->num_buffers; i++) {
>>> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
>>> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
>>> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
>>> +
>>> + if (!vb)
>>> + continue;
>>> +
>>> + buf = vb2_to_cedrus_buffer(vb);
>>> if (buf->codec.h264.mv_col_buf_size > 0) {
>>> dma_free_attrs(dev->dev,
>>> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>> index fc9297232456..52e94c8f2f01 100644
>>> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>> @@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct cedrus_ctx *ctx)
>>> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE);
>>> - for (i = 0; i < vq->num_buffers; i++) {
>>> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
>>> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
>>> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
>>> +
>>> + if (!vb)
>>> + continue;
>>> +
>>> + buf = vb2_to_cedrus_buffer(vb);
>>> if (buf->codec.h265.mv_col_buf_size > 0) {
>>> dma_free_attrs(dev->dev,
>>
>
>
> _______________________________________________
> Kernel mailing list -- kernel@mailman.collabora.com
> To unsubscribe send an email to kernel-leave@mailman.collabora.com
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
2023-11-09 15:48 ` Andrzej Pietrasiewicz
(?)
@ 2023-11-09 15:54 ` Benjamin Gaignard
-1 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 15:54 UTC (permalink / raw)
To: Andrzej Pietrasiewicz, Paul Kocialkowski
Cc: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne, linux-media,
linux-kernel, linux-arm-kernel, linux-mediatek, linux-arm-msm,
linux-rockchip, linux-staging, kernel, Maxime Ripard
Le 09/11/2023 à 16:48, Andrzej Pietrasiewicz a écrit :
> Hi Paul,
>
> W dniu 9.11.2023 o 15:14, Paul Kocialkowski pisze:
>> Hi Andrzej,
>>
>> On Thu 09 Nov 23, 12:27, Andrzej Pietrasiewicz wrote:
>>> Hi Paul,
>>>
>>> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
>>>> Use vb2_get_num_buffers() to avoid using queue num_buffers field
>>>> directly.
>>>> This allows us to change how the number of buffers is computed in the
>>>> future.
>>>>
>>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>>>> Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
>>>
>>> Given you've alaredy A-b, would you be ok with adding this sentence:
>>>
>>> "While at it, check the return value of vb2_get_buffer()."
>>>
>>> to the commit message body?
>>
>> Not only do I agree, but because this is done in a function returning
>> void,
>> you could even:
>>
>> if (WARN_ON(!vb))
>> continue;
>>
>> so that it doesn't go completely unnoticed.
>>
>> What do you think?
>>
>
> I'd ask Benjamin.
>
> But my take on the direction of changes is that ultimately
> there will be "holes" in the array of allocated buffers (hence the
> bitmap to track which slots are used and which are not). In other words,
> getting a NULL sometimes will be an expected situation, and a WARN() will
> not be appropriate for an expected situation.
>
> @Benjamin?
That should never happens unless you add delete buffers capability to the driver
and in this case it is normal to have holes.
Other drivers do not use WARN_ON() so I will not do it for this one.
Regards,
Benjamin
>
> Regards,
>
> Andrzej
>
>> Cheers,
>>
>> Paul
>>
>>> @Benjamin:
>>>
>>> With this change, you can add my
>>>
>>> Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
>>>
>>>> CC: Maxime Ripard <mripard@kernel.org>
>>>> ---
>>>> drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
>>>> drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
>>>> 2 files changed, 14 insertions(+), 4 deletions(-)
>>>>
>>>> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>>> b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>>> index dfb401df138a..3e2843ef6cce 100644
>>>> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>>> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>>> @@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct cedrus_ctx
>>>> *ctx)
>>>> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
>>>> V4L2_BUF_TYPE_VIDEO_CAPTURE);
>>>> - for (i = 0; i < vq->num_buffers; i++) {
>>>> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
>>>> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
>>>> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
>>>> +
>>>> + if (!vb)
>>>> + continue;
>>>> +
>>>> + buf = vb2_to_cedrus_buffer(vb);
>>>> if (buf->codec.h264.mv_col_buf_size > 0) {
>>>> dma_free_attrs(dev->dev,
>>>> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>>> b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>>> index fc9297232456..52e94c8f2f01 100644
>>>> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>>> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>>> @@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct cedrus_ctx
>>>> *ctx)
>>>> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
>>>> V4L2_BUF_TYPE_VIDEO_CAPTURE);
>>>> - for (i = 0; i < vq->num_buffers; i++) {
>>>> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
>>>> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
>>>> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
>>>> +
>>>> + if (!vb)
>>>> + continue;
>>>> +
>>>> + buf = vb2_to_cedrus_buffer(vb);
>>>> if (buf->codec.h265.mv_col_buf_size > 0) {
>>>> dma_free_attrs(dev->dev,
>>>
>>
>>
>> _______________________________________________
>> Kernel mailing list -- kernel@mailman.collabora.com
>> To unsubscribe send an email to kernel-leave@mailman.collabora.com
>
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
@ 2023-11-09 15:54 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 15:54 UTC (permalink / raw)
To: Andrzej Pietrasiewicz, Paul Kocialkowski
Cc: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne, linux-media,
linux-kernel, linux-arm-kernel, linux-mediatek, linux-arm-msm,
linux-rockchip, linux-staging, kernel, Maxime Ripard
Le 09/11/2023 à 16:48, Andrzej Pietrasiewicz a écrit :
> Hi Paul,
>
> W dniu 9.11.2023 o 15:14, Paul Kocialkowski pisze:
>> Hi Andrzej,
>>
>> On Thu 09 Nov 23, 12:27, Andrzej Pietrasiewicz wrote:
>>> Hi Paul,
>>>
>>> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
>>>> Use vb2_get_num_buffers() to avoid using queue num_buffers field
>>>> directly.
>>>> This allows us to change how the number of buffers is computed in the
>>>> future.
>>>>
>>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>>>> Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
>>>
>>> Given you've alaredy A-b, would you be ok with adding this sentence:
>>>
>>> "While at it, check the return value of vb2_get_buffer()."
>>>
>>> to the commit message body?
>>
>> Not only do I agree, but because this is done in a function returning
>> void,
>> you could even:
>>
>> if (WARN_ON(!vb))
>> continue;
>>
>> so that it doesn't go completely unnoticed.
>>
>> What do you think?
>>
>
> I'd ask Benjamin.
>
> But my take on the direction of changes is that ultimately
> there will be "holes" in the array of allocated buffers (hence the
> bitmap to track which slots are used and which are not). In other words,
> getting a NULL sometimes will be an expected situation, and a WARN() will
> not be appropriate for an expected situation.
>
> @Benjamin?
That should never happens unless you add delete buffers capability to the driver
and in this case it is normal to have holes.
Other drivers do not use WARN_ON() so I will not do it for this one.
Regards,
Benjamin
>
> Regards,
>
> Andrzej
>
>> Cheers,
>>
>> Paul
>>
>>> @Benjamin:
>>>
>>> With this change, you can add my
>>>
>>> Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
>>>
>>>> CC: Maxime Ripard <mripard@kernel.org>
>>>> ---
>>>> drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
>>>> drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
>>>> 2 files changed, 14 insertions(+), 4 deletions(-)
>>>>
>>>> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>>> b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>>> index dfb401df138a..3e2843ef6cce 100644
>>>> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>>> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>>> @@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct cedrus_ctx
>>>> *ctx)
>>>> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
>>>> V4L2_BUF_TYPE_VIDEO_CAPTURE);
>>>> - for (i = 0; i < vq->num_buffers; i++) {
>>>> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
>>>> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
>>>> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
>>>> +
>>>> + if (!vb)
>>>> + continue;
>>>> +
>>>> + buf = vb2_to_cedrus_buffer(vb);
>>>> if (buf->codec.h264.mv_col_buf_size > 0) {
>>>> dma_free_attrs(dev->dev,
>>>> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>>> b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>>> index fc9297232456..52e94c8f2f01 100644
>>>> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>>> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>>> @@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct cedrus_ctx
>>>> *ctx)
>>>> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
>>>> V4L2_BUF_TYPE_VIDEO_CAPTURE);
>>>> - for (i = 0; i < vq->num_buffers; i++) {
>>>> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
>>>> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
>>>> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
>>>> +
>>>> + if (!vb)
>>>> + continue;
>>>> +
>>>> + buf = vb2_to_cedrus_buffer(vb);
>>>> if (buf->codec.h265.mv_col_buf_size > 0) {
>>>> dma_free_attrs(dev->dev,
>>>
>>
>>
>> _______________________________________________
>> Kernel mailing list -- kernel@mailman.collabora.com
>> To unsubscribe send an email to kernel-leave@mailman.collabora.com
>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
@ 2023-11-09 15:54 ` Benjamin Gaignard
0 siblings, 0 replies; 399+ messages in thread
From: Benjamin Gaignard @ 2023-11-09 15:54 UTC (permalink / raw)
To: Andrzej Pietrasiewicz, Paul Kocialkowski
Cc: mchehab, tfiga, m.szyprowski, ming.qian, ezequiel, p.zabel,
gregkh, hverkuil-cisco, nicolas.dufresne, linux-media,
linux-kernel, linux-arm-kernel, linux-mediatek, linux-arm-msm,
linux-rockchip, linux-staging, kernel, Maxime Ripard
Le 09/11/2023 à 16:48, Andrzej Pietrasiewicz a écrit :
> Hi Paul,
>
> W dniu 9.11.2023 o 15:14, Paul Kocialkowski pisze:
>> Hi Andrzej,
>>
>> On Thu 09 Nov 23, 12:27, Andrzej Pietrasiewicz wrote:
>>> Hi Paul,
>>>
>>> W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
>>>> Use vb2_get_num_buffers() to avoid using queue num_buffers field
>>>> directly.
>>>> This allows us to change how the number of buffers is computed in the
>>>> future.
>>>>
>>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>>>> Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
>>>
>>> Given you've alaredy A-b, would you be ok with adding this sentence:
>>>
>>> "While at it, check the return value of vb2_get_buffer()."
>>>
>>> to the commit message body?
>>
>> Not only do I agree, but because this is done in a function returning
>> void,
>> you could even:
>>
>> if (WARN_ON(!vb))
>> continue;
>>
>> so that it doesn't go completely unnoticed.
>>
>> What do you think?
>>
>
> I'd ask Benjamin.
>
> But my take on the direction of changes is that ultimately
> there will be "holes" in the array of allocated buffers (hence the
> bitmap to track which slots are used and which are not). In other words,
> getting a NULL sometimes will be an expected situation, and a WARN() will
> not be appropriate for an expected situation.
>
> @Benjamin?
That should never happens unless you add delete buffers capability to the driver
and in this case it is normal to have holes.
Other drivers do not use WARN_ON() so I will not do it for this one.
Regards,
Benjamin
>
> Regards,
>
> Andrzej
>
>> Cheers,
>>
>> Paul
>>
>>> @Benjamin:
>>>
>>> With this change, you can add my
>>>
>>> Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
>>>
>>>> CC: Maxime Ripard <mripard@kernel.org>
>>>> ---
>>>> drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
>>>> drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
>>>> 2 files changed, 14 insertions(+), 4 deletions(-)
>>>>
>>>> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>>> b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>>> index dfb401df138a..3e2843ef6cce 100644
>>>> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>>> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
>>>> @@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct cedrus_ctx
>>>> *ctx)
>>>> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
>>>> V4L2_BUF_TYPE_VIDEO_CAPTURE);
>>>> - for (i = 0; i < vq->num_buffers; i++) {
>>>> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
>>>> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
>>>> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
>>>> +
>>>> + if (!vb)
>>>> + continue;
>>>> +
>>>> + buf = vb2_to_cedrus_buffer(vb);
>>>> if (buf->codec.h264.mv_col_buf_size > 0) {
>>>> dma_free_attrs(dev->dev,
>>>> diff --git a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>>> b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>>> index fc9297232456..52e94c8f2f01 100644
>>>> --- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>>> +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
>>>> @@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct cedrus_ctx
>>>> *ctx)
>>>> vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
>>>> V4L2_BUF_TYPE_VIDEO_CAPTURE);
>>>> - for (i = 0; i < vq->num_buffers; i++) {
>>>> - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
>>>> + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
>>>> + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
>>>> +
>>>> + if (!vb)
>>>> + continue;
>>>> +
>>>> + buf = vb2_to_cedrus_buffer(vb);
>>>> if (buf->codec.h265.mv_col_buf_size > 0) {
>>>> dma_free_attrs(dev->dev,
>>>
>>
>>
>> _______________________________________________
>> Kernel mailing list -- kernel@mailman.collabora.com
>> To unsubscribe send an email to kernel-leave@mailman.collabora.com
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
2023-11-09 15:54 ` Benjamin Gaignard
(?)
@ 2023-11-09 16:29 ` Paul Kocialkowski
-1 siblings, 0 replies; 399+ messages in thread
From: Paul Kocialkowski @ 2023-11-09 16:29 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: Andrzej Pietrasiewicz, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne,
linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Maxime Ripard
[-- Attachment #1: Type: text/plain, Size: 5144 bytes --]
Hi,
On Thu 09 Nov 23, 16:54, Benjamin Gaignard wrote:
>
> Le 09/11/2023 à 16:48, Andrzej Pietrasiewicz a écrit :
> > Hi Paul,
> >
> > W dniu 9.11.2023 o 15:14, Paul Kocialkowski pisze:
> > > Hi Andrzej,
> > >
> > > On Thu 09 Nov 23, 12:27, Andrzej Pietrasiewicz wrote:
> > > > Hi Paul,
> > > >
> > > > W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> > > > > Use vb2_get_num_buffers() to avoid using queue num_buffers
> > > > > field directly.
> > > > > This allows us to change how the number of buffers is computed in the
> > > > > future.
> > > > >
> > > > > Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> > > > > Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
> > > >
> > > > Given you've alaredy A-b, would you be ok with adding this sentence:
> > > >
> > > > "While at it, check the return value of vb2_get_buffer()."
> > > >
> > > > to the commit message body?
> > >
> > > Not only do I agree, but because this is done in a function
> > > returning void,
> > > you could even:
> > >
> > > if (WARN_ON(!vb))
> > > continue;
> > >
> > > so that it doesn't go completely unnoticed.
> > >
> > > What do you think?
> > >
> >
> > I'd ask Benjamin.
> >
> > But my take on the direction of changes is that ultimately
> > there will be "holes" in the array of allocated buffers (hence the
> > bitmap to track which slots are used and which are not). In other words,
> > getting a NULL sometimes will be an expected situation, and a WARN() will
> > not be appropriate for an expected situation.
> >
> > @Benjamin?
>
> That should never happens unless you add delete buffers capability to the driver
> and in this case it is normal to have holes.
> Other drivers do not use WARN_ON() so I will not do it for this one.
Yeah I also don't expect that buffers can just disappear on us before
introducing the delete buffers capability.
But okay it's fine with me to not use WARN_ON.
Cheers,
Paul
> Regards,
> Benjamin
>
> >
> > Regards,
> >
> > Andrzej
> >
> > > Cheers,
> > >
> > > Paul
> > >
> > > > @Benjamin:
> > > >
> > > > With this change, you can add my
> > > >
> > > > Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> > > >
> > > > > CC: Maxime Ripard <mripard@kernel.org>
> > > > > ---
> > > > > drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
> > > > > drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
> > > > > 2 files changed, 14 insertions(+), 4 deletions(-)
> > > > >
> > > > > diff --git
> > > > > a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > > > > b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > > > > index dfb401df138a..3e2843ef6cce 100644
> > > > > --- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > > > > +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > > > > @@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct
> > > > > cedrus_ctx *ctx)
> > > > > vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
> > > > > V4L2_BUF_TYPE_VIDEO_CAPTURE);
> > > > > - for (i = 0; i < vq->num_buffers; i++) {
> > > > > - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> > > > > + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> > > > > + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> > > > > +
> > > > > + if (!vb)
> > > > > + continue;
> > > > > +
> > > > > + buf = vb2_to_cedrus_buffer(vb);
> > > > > if (buf->codec.h264.mv_col_buf_size > 0) {
> > > > > dma_free_attrs(dev->dev,
> > > > > diff --git
> > > > > a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > > > > b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > > > > index fc9297232456..52e94c8f2f01 100644
> > > > > --- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > > > > +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > > > > @@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct
> > > > > cedrus_ctx *ctx)
> > > > > vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
> > > > > V4L2_BUF_TYPE_VIDEO_CAPTURE);
> > > > > - for (i = 0; i < vq->num_buffers; i++) {
> > > > > - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> > > > > + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> > > > > + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> > > > > +
> > > > > + if (!vb)
> > > > > + continue;
> > > > > +
> > > > > + buf = vb2_to_cedrus_buffer(vb);
> > > > > if (buf->codec.h265.mv_col_buf_size > 0) {
> > > > > dma_free_attrs(dev->dev,
> > > >
> > >
> > >
> > > _______________________________________________
> > > Kernel mailing list -- kernel@mailman.collabora.com
> > > To unsubscribe send an email to kernel-leave@mailman.collabora.com
> >
--
Paul Kocialkowski, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
@ 2023-11-09 16:29 ` Paul Kocialkowski
0 siblings, 0 replies; 399+ messages in thread
From: Paul Kocialkowski @ 2023-11-09 16:29 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: Andrzej Pietrasiewicz, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne,
linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Maxime Ripard
[-- Attachment #1.1: Type: text/plain, Size: 5144 bytes --]
Hi,
On Thu 09 Nov 23, 16:54, Benjamin Gaignard wrote:
>
> Le 09/11/2023 à 16:48, Andrzej Pietrasiewicz a écrit :
> > Hi Paul,
> >
> > W dniu 9.11.2023 o 15:14, Paul Kocialkowski pisze:
> > > Hi Andrzej,
> > >
> > > On Thu 09 Nov 23, 12:27, Andrzej Pietrasiewicz wrote:
> > > > Hi Paul,
> > > >
> > > > W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> > > > > Use vb2_get_num_buffers() to avoid using queue num_buffers
> > > > > field directly.
> > > > > This allows us to change how the number of buffers is computed in the
> > > > > future.
> > > > >
> > > > > Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> > > > > Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
> > > >
> > > > Given you've alaredy A-b, would you be ok with adding this sentence:
> > > >
> > > > "While at it, check the return value of vb2_get_buffer()."
> > > >
> > > > to the commit message body?
> > >
> > > Not only do I agree, but because this is done in a function
> > > returning void,
> > > you could even:
> > >
> > > if (WARN_ON(!vb))
> > > continue;
> > >
> > > so that it doesn't go completely unnoticed.
> > >
> > > What do you think?
> > >
> >
> > I'd ask Benjamin.
> >
> > But my take on the direction of changes is that ultimately
> > there will be "holes" in the array of allocated buffers (hence the
> > bitmap to track which slots are used and which are not). In other words,
> > getting a NULL sometimes will be an expected situation, and a WARN() will
> > not be appropriate for an expected situation.
> >
> > @Benjamin?
>
> That should never happens unless you add delete buffers capability to the driver
> and in this case it is normal to have holes.
> Other drivers do not use WARN_ON() so I will not do it for this one.
Yeah I also don't expect that buffers can just disappear on us before
introducing the delete buffers capability.
But okay it's fine with me to not use WARN_ON.
Cheers,
Paul
> Regards,
> Benjamin
>
> >
> > Regards,
> >
> > Andrzej
> >
> > > Cheers,
> > >
> > > Paul
> > >
> > > > @Benjamin:
> > > >
> > > > With this change, you can add my
> > > >
> > > > Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> > > >
> > > > > CC: Maxime Ripard <mripard@kernel.org>
> > > > > ---
> > > > > drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
> > > > > drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
> > > > > 2 files changed, 14 insertions(+), 4 deletions(-)
> > > > >
> > > > > diff --git
> > > > > a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > > > > b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > > > > index dfb401df138a..3e2843ef6cce 100644
> > > > > --- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > > > > +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > > > > @@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct
> > > > > cedrus_ctx *ctx)
> > > > > vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
> > > > > V4L2_BUF_TYPE_VIDEO_CAPTURE);
> > > > > - for (i = 0; i < vq->num_buffers; i++) {
> > > > > - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> > > > > + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> > > > > + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> > > > > +
> > > > > + if (!vb)
> > > > > + continue;
> > > > > +
> > > > > + buf = vb2_to_cedrus_buffer(vb);
> > > > > if (buf->codec.h264.mv_col_buf_size > 0) {
> > > > > dma_free_attrs(dev->dev,
> > > > > diff --git
> > > > > a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > > > > b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > > > > index fc9297232456..52e94c8f2f01 100644
> > > > > --- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > > > > +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > > > > @@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct
> > > > > cedrus_ctx *ctx)
> > > > > vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
> > > > > V4L2_BUF_TYPE_VIDEO_CAPTURE);
> > > > > - for (i = 0; i < vq->num_buffers; i++) {
> > > > > - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> > > > > + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> > > > > + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> > > > > +
> > > > > + if (!vb)
> > > > > + continue;
> > > > > +
> > > > > + buf = vb2_to_cedrus_buffer(vb);
> > > > > if (buf->codec.h265.mv_col_buf_size > 0) {
> > > > > dma_free_attrs(dev->dev,
> > > >
> > >
> > >
> > > _______________________________________________
> > > Kernel mailing list -- kernel@mailman.collabora.com
> > > To unsubscribe send an email to kernel-leave@mailman.collabora.com
> >
--
Paul Kocialkowski, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com
[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
[-- Attachment #2: Type: text/plain, Size: 170 bytes --]
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 35/56] media: cedrus: Stop direct calls to queue num_buffers field
@ 2023-11-09 16:29 ` Paul Kocialkowski
0 siblings, 0 replies; 399+ messages in thread
From: Paul Kocialkowski @ 2023-11-09 16:29 UTC (permalink / raw)
To: Benjamin Gaignard
Cc: Andrzej Pietrasiewicz, mchehab, tfiga, m.szyprowski, ming.qian,
ezequiel, p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne,
linux-media, linux-kernel, linux-arm-kernel, linux-mediatek,
linux-arm-msm, linux-rockchip, linux-staging, kernel,
Maxime Ripard
[-- Attachment #1.1: Type: text/plain, Size: 5144 bytes --]
Hi,
On Thu 09 Nov 23, 16:54, Benjamin Gaignard wrote:
>
> Le 09/11/2023 à 16:48, Andrzej Pietrasiewicz a écrit :
> > Hi Paul,
> >
> > W dniu 9.11.2023 o 15:14, Paul Kocialkowski pisze:
> > > Hi Andrzej,
> > >
> > > On Thu 09 Nov 23, 12:27, Andrzej Pietrasiewicz wrote:
> > > > Hi Paul,
> > > >
> > > > W dniu 31.10.2023 o 17:30, Benjamin Gaignard pisze:
> > > > > Use vb2_get_num_buffers() to avoid using queue num_buffers
> > > > > field directly.
> > > > > This allows us to change how the number of buffers is computed in the
> > > > > future.
> > > > >
> > > > > Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> > > > > Acked-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
> > > >
> > > > Given you've alaredy A-b, would you be ok with adding this sentence:
> > > >
> > > > "While at it, check the return value of vb2_get_buffer()."
> > > >
> > > > to the commit message body?
> > >
> > > Not only do I agree, but because this is done in a function
> > > returning void,
> > > you could even:
> > >
> > > if (WARN_ON(!vb))
> > > continue;
> > >
> > > so that it doesn't go completely unnoticed.
> > >
> > > What do you think?
> > >
> >
> > I'd ask Benjamin.
> >
> > But my take on the direction of changes is that ultimately
> > there will be "holes" in the array of allocated buffers (hence the
> > bitmap to track which slots are used and which are not). In other words,
> > getting a NULL sometimes will be an expected situation, and a WARN() will
> > not be appropriate for an expected situation.
> >
> > @Benjamin?
>
> That should never happens unless you add delete buffers capability to the driver
> and in this case it is normal to have holes.
> Other drivers do not use WARN_ON() so I will not do it for this one.
Yeah I also don't expect that buffers can just disappear on us before
introducing the delete buffers capability.
But okay it's fine with me to not use WARN_ON.
Cheers,
Paul
> Regards,
> Benjamin
>
> >
> > Regards,
> >
> > Andrzej
> >
> > > Cheers,
> > >
> > > Paul
> > >
> > > > @Benjamin:
> > > >
> > > > With this change, you can add my
> > > >
> > > > Reviewed-by: Andrzej Pietrasiewicz <andrzej.p@collabora.com>
> > > >
> > > > > CC: Maxime Ripard <mripard@kernel.org>
> > > > > ---
> > > > > drivers/staging/media/sunxi/cedrus/cedrus_h264.c | 9 +++++++--
> > > > > drivers/staging/media/sunxi/cedrus/cedrus_h265.c | 9 +++++++--
> > > > > 2 files changed, 14 insertions(+), 4 deletions(-)
> > > > >
> > > > > diff --git
> > > > > a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > > > > b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > > > > index dfb401df138a..3e2843ef6cce 100644
> > > > > --- a/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > > > > +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h264.c
> > > > > @@ -653,8 +653,13 @@ static void cedrus_h264_stop(struct
> > > > > cedrus_ctx *ctx)
> > > > > vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
> > > > > V4L2_BUF_TYPE_VIDEO_CAPTURE);
> > > > > - for (i = 0; i < vq->num_buffers; i++) {
> > > > > - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> > > > > + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> > > > > + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> > > > > +
> > > > > + if (!vb)
> > > > > + continue;
> > > > > +
> > > > > + buf = vb2_to_cedrus_buffer(vb);
> > > > > if (buf->codec.h264.mv_col_buf_size > 0) {
> > > > > dma_free_attrs(dev->dev,
> > > > > diff --git
> > > > > a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > > > > b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > > > > index fc9297232456..52e94c8f2f01 100644
> > > > > --- a/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > > > > +++ b/drivers/staging/media/sunxi/cedrus/cedrus_h265.c
> > > > > @@ -869,8 +869,13 @@ static void cedrus_h265_stop(struct
> > > > > cedrus_ctx *ctx)
> > > > > vq = v4l2_m2m_get_vq(ctx->fh.m2m_ctx,
> > > > > V4L2_BUF_TYPE_VIDEO_CAPTURE);
> > > > > - for (i = 0; i < vq->num_buffers; i++) {
> > > > > - buf = vb2_to_cedrus_buffer(vb2_get_buffer(vq, i));
> > > > > + for (i = 0; i < vb2_get_num_buffers(vq); i++) {
> > > > > + struct vb2_buffer *vb = vb2_get_buffer(vq, i);
> > > > > +
> > > > > + if (!vb)
> > > > > + continue;
> > > > > +
> > > > > + buf = vb2_to_cedrus_buffer(vb);
> > > > > if (buf->codec.h265.mv_col_buf_size > 0) {
> > > > > dma_free_attrs(dev->dev,
> > > >
> > >
> > >
> > > _______________________________________________
> > > Kernel mailing list -- kernel@mailman.collabora.com
> > > To unsubscribe send an email to kernel-leave@mailman.collabora.com
> >
--
Paul Kocialkowski, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com
[-- Attachment #1.2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]
[-- Attachment #2: Type: text/plain, Size: 176 bytes --]
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
2023-11-09 10:10 ` Benjamin Gaignard
(?)
@ 2023-11-10 8:58 ` Tomasz Figa
-1 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-10 8:58 UTC (permalink / raw)
To: Benjamin Gaignard, Hans Verkuil
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Thu, Nov 9, 2023 at 7:10 PM Benjamin Gaignard
<benjamin.gaignard@collabora.com> wrote:
>
>
> Le 09/11/2023 à 10:30, Tomasz Figa a écrit :
> > On Tue, Oct 31, 2023 at 05:31:02PM +0100, Benjamin Gaignard wrote:
> >> VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
> >> The number of buffers to delete in given by count field of
> >> struct v4l2_delete_buffers and the range start at the index
> >> specified in the same structure.
> >>
> >> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> >> ---
> >> .../userspace-api/media/v4l/user-func.rst | 1 +
> >> .../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
> >> .../media/v4l/vidioc-reqbufs.rst | 1 +
> >> .../media/common/videobuf2/videobuf2-core.c | 30 +++++++
> >> .../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
> >> drivers/media/v4l2-core/v4l2-dev.c | 1 +
> >> drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
> >> include/media/v4l2-ioctl.h | 4 +
> >> include/media/videobuf2-core.h | 12 +++
> >> include/media/videobuf2-v4l2.h | 13 +++
> >> include/uapi/linux/videodev2.h | 17 ++++
> >> 11 files changed, 196 insertions(+)
> >> create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >>
> >> diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
> >> index 15ff0bf7bbe6..3fd567695477 100644
> >> --- a/Documentation/userspace-api/media/v4l/user-func.rst
> >> +++ b/Documentation/userspace-api/media/v4l/user-func.rst
> >> @@ -17,6 +17,7 @@ Function Reference
> >> vidioc-dbg-g-chip-info
> >> vidioc-dbg-g-register
> >> vidioc-decoder-cmd
> >> + vidioc-delete-bufs
> >> vidioc-dqevent
> >> vidioc-dv-timings-cap
> >> vidioc-encoder-cmd
> >> diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >> new file mode 100644
> >> index 000000000000..4791df1395d6
> >> --- /dev/null
> >> +++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >> @@ -0,0 +1,80 @@
> >> +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
> >> +.. c:namespace:: V4L
> >> +
> >> +.. _VIDIOC_DELETE_BUFS:
> >> +
> >> +************************
> >> +ioctl VIDIOC_DELETE_BUFS
> >> +************************
> >> +
> >> +Name
> >> +====
> >> +
> >> +VIDIOC_DELETE_BUFS - Deletes buffers from a queue
> >> +Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
> >> +capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
> >> +are invoked.
> >> +
> >> +Synopsis
> >> +========
> >> +
> >> +.. c:macro:: VIDIOC_DELETE_BUFs
> >> +
> >> +``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
> >> +
> >> +Arguments
> >> +=========
> >> +
> >> +``fd``
> >> + File descriptor returned by :c:func:`open()`.
> >> +
> >> +``argp``
> >> + Pointer to struct :c:type:`v4l2_delete_buffers`.
> >> +
> >> +Description
> >> +===========
> >> +
> >> +Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
> >> +delete buffers from a queue.
> >> +
> >> +.. c:type:: v4l2_delete_buffers
> >> +
> >> +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
> >> +
> >> +.. flat-table:: struct v4l2_delete_buffers
> >> + :header-rows: 0
> >> + :stub-columns: 0
> >> + :widths: 1 1 2
> >> +
> >> + * - __u32
> >> + - ``index``
> >> + - The starting buffer index to delete.
> >> + * - __u32
> >> + - ``count``
> >> + - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
> >> + All buffers in this range must be valid and in DEQUEUED state.
> > I wonder if this wouldn't be an inconvenience for the userspace. Would
> > there be anything wrong with allowing ranges with holes?
> > (Agreed about the DEQUEUED part of course.)
>
> For me a range as to be valid but the matter of taste.
>
@Hans Verkuil do you have an opinion?
I could imagine that applications may want to just delete multiple
disjoint ranges in one ioctl, which wouldn't be possible if we
prohibit holes in the ranges.
> >
> >> + In error case errno is set to ``EINVAL`` error code and index returns the index of
> >> + the invalid buffer.
> >> + If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
> > Hmm, do we care about index if count is zero?
>
> No we don't I will change that.
>
> >
> >> + * - __u32
> >> + - ``type``
> >> + - Type of the stream or buffers, this is the same as the struct
> >> + :c:type:`v4l2_format` ``type`` field. See
> >> + :c:type:`v4l2_buf_type` for valid values.
> >> + * - __u32
> >> + - ``reserved``\ [13]
> >> + - A place holder for future extensions. Drivers and applications
> >> + must set the array to zero.
> >> +
> >> +Return Value
> >> +============
> >> +
> >> +On success 0 is returned, on error -1 and the ``errno`` variable is set
> >> +appropriately. The generic error codes are described at the
> >> +:ref:`Generic Error Codes <gen-errors>` chapter.
> >> +
> >> +EBUSY
> >> + File I/O is in progress.
> >> +
> >> +EINVAL
> >> + The buffer ``index`` doesn't exist in the queue.
> >> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >> index 0b3a41a45d05..14d4a49c2945 100644
> >> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >> @@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
> >> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
> >> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
> >> .. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
> >> +.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
> >>
> >> .. raw:: latex
> >>
> >> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> >> index 010a8bca0240..7068930a0ba6 100644
> >> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> >> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> >> @@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> >> }
> >> EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
> >>
> >> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
> >> +{
> >> + unsigned int i, ret = 0;
> >> +
> >> + if (start == 0 && count == 0)
> > I guess related to the earlier comment, but why do we care about start
> > being zero?
> >
> >> + return 0;
> >> +
> >> + mutex_lock(&q->mmap_lock);
> >> +
> >> + for (i = start; i < start + count && i < q->max_num_buffers; i++) {
> >> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
> >> +
> >> + if (!vb) {
> >> + ret = -EINVAL;
> >> + goto unlock;
> >> + }
> >> + if (vb->state != VB2_BUF_STATE_DEQUEUED) {
> >> + ret = -EINVAL;
> >> + goto unlock;
> >> + }
> >> + }
> >> + __vb2_queue_free(q, start, count);
> >> + dprintk(q, 2, "buffers deleted\n");
> >> +
> >> +unlock:
> >> + mutex_unlock(&q->mmap_lock);
> >> + return ret;
> >> +}
> >> +EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
> >> +
> >> /*
> >> * vb2_start_streaming() - Attempt to start streaming.
> >> * @q: videobuf2 queue
> >> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >> index 56daf3b5b2ba..f003618efbc1 100644
> >> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >> @@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
> >> if (q->supports_requests)
> >> *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
> >> #endif
> >> + if (q->supports_delete_bufs)
> >> + *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
> >> }
> >>
> >> static void validate_memory_flags(struct vb2_queue *q,
> >> @@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> >> }
> >> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
> >>
> >> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
> >> +{
> >> + return vb2_core_delete_bufs(q, d->index, d->count);
> >> +}
> >> +EXPORT_SYMBOL_GPL(vb2_delete_bufs);
> >> +
> >> int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
> >> {
> >> unsigned requested_planes = 1;
> >> @@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
> >>
> >> /* vb2 ioctl helpers */
> >>
> >> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> >> + struct v4l2_delete_buffers *p)
> >> +{
> >> + struct video_device *vdev = video_devdata(file);
> >> +
> >> + if (vb2_queue_is_busy(vdev->queue, file))
> >> + return -EBUSY;
> >> +
> >> + return vb2_delete_bufs(vdev->queue, p);
> >> +}
> >> +EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
> >> +
> >> int vb2_ioctl_reqbufs(struct file *file, void *priv,
> >> struct v4l2_requestbuffers *p)
> >> {
> >> diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
> >> index f81279492682..215654fd6581 100644
> >> --- a/drivers/media/v4l2-core/v4l2-dev.c
> >> +++ b/drivers/media/v4l2-core/v4l2-dev.c
> >> @@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
> >> SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
> >> SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
> >> SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
> >> + SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
> >> }
> >>
> >> if (is_vid || is_vbi || is_meta) {
> >> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
> >> index 4d90424cbfc4..e9dcf439f9f3 100644
> >> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> >> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> >> @@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
> >> v4l_print_format(&p->format, write_only);
> >> }
> >>
> >> +static void v4l_print_delete_buffers(const void *arg, bool write_only)
> >> +{
> >> + const struct v4l2_delete_buffers *p = arg;
> >> +
> >> + pr_cont("index=%u, count=%u\n", p->index, p->count);
> >> +}
> >> +
> >> static void v4l_print_streamparm(const void *arg, bool write_only)
> >> {
> >> const struct v4l2_streamparm *p = arg;
> >> @@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
> >> return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
> >> }
> >>
> >> +static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
> >> + struct file *file, void *fh, void *arg)
> >> +{
> >> + struct v4l2_delete_buffers *delete = arg;
> >> + int ret = check_fmt(file, delete->type);
> > Should we also have
> >
> > memset_after(delete, 0, type);
> >
> > here similar to how other ioctl handlers clear the reserved fields?
>
> I will add it.
>
> >
> >> +
> >> + return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
> >> +}
> >> +
> >> static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
> >> struct file *file, void *fh, void *arg)
> >> {
> >> @@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
> >> IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
> >> IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
> >> IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
> >> + IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
> >> };
> >> #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
> >>
> >> diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
> >> index edb733f21604..55afbde54211 100644
> >> --- a/include/media/v4l2-ioctl.h
> >> +++ b/include/media/v4l2-ioctl.h
> >> @@ -163,6 +163,8 @@ struct v4l2_fh;
> >> * :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
> >> * @vidioc_prepare_buf: pointer to the function that implements
> >> * :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
> >> + * @vidioc_delete_bufs: pointer to the function that implements
> >> + * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
> >> * @vidioc_overlay: pointer to the function that implements
> >> * :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
> >> * @vidioc_g_fbuf: pointer to the function that implements
> >> @@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
> >> struct v4l2_create_buffers *b);
> >> int (*vidioc_prepare_buf)(struct file *file, void *fh,
> >> struct v4l2_buffer *b);
> >> + int (*vidioc_delete_bufs)(struct file *file, void *fh,
> >> + struct v4l2_delete_buffers *d);
> >>
> >> int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
> >> int (*vidioc_g_fbuf)(struct file *file, void *fh,
> >> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> >> index 288477075a0e..db3bd986624e 100644
> >> --- a/include/media/videobuf2-core.h
> >> +++ b/include/media/videobuf2-core.h
> >> @@ -507,6 +507,7 @@ struct vb2_buf_ops {
> >> * @supports_requests: this queue supports the Request API.
> >> * @requires_requests: this queue requires the Request API. If this is set to 1,
> >> * then supports_requests must be set to 1 as well.
> >> + * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
> >> * @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
> >> * time this is called. Set to 0 when the queue is canceled.
> >> * If this is 1, then you cannot queue buffers from a request.
> >> @@ -595,6 +596,7 @@ struct vb2_queue {
> >> unsigned int quirk_poll_must_check_waiting_for_buffers:1;
> >> unsigned int supports_requests:1;
> >> unsigned int requires_requests:1;
> >> + unsigned int supports_delete_bufs:1;
> >> unsigned int uses_qbuf:1;
> >> unsigned int uses_requests:1;
> >> unsigned int allow_cache_hints:1;
> >> @@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> >> */
> >> int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
> >>
> >> +/**
> >> + * vb2_core_delete_bufs() -
> >> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> >> + * @start: first index of the range of buffers to delete.
> >> + * @count: number of buffers to delete.
> >> + *
> >> + * Return: returns zero on success; an error code otherwise.
> >> + */
> >> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
> >> +
> >> /**
> >> * vb2_core_qbuf() - Queue a buffer from userspace
> >> *
> >> diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
> >> index 5a845887850b..79cea8459f52 100644
> >> --- a/include/media/videobuf2-v4l2.h
> >> +++ b/include/media/videobuf2-v4l2.h
> >> @@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
> >> */
> >> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> >> struct v4l2_buffer *b);
> >> +/**
> >> + * vb2_delete_bufs() - Delete buffers from the queue
> >> + *
> >> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> >> + * @d: delete parameter, passed from userspace to
> >> + * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
> >> + *
> >> + * The return values from this function are intended to be directly returned
> >> + * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
> >> + */
> >> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
> >>
> >> /**
> >> * vb2_qbuf() - Queue a buffer from userspace
> >> @@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
> >> int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
> >> int vb2_ioctl_expbuf(struct file *file, void *priv,
> >> struct v4l2_exportbuffer *p);
> >> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> >> + struct v4l2_delete_buffers *p);
> >>
> >> /* struct v4l2_file_operations helpers */
> >>
> >> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> >> index 13ddb5abf584..96e105149906 100644
> >> --- a/include/uapi/linux/videodev2.h
> >> +++ b/include/uapi/linux/videodev2.h
> >> @@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
> >> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
> >> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
> >> #define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
> >> +#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
> >>
> >> /**
> >> * struct v4l2_plane - plane info for multi-planar buffers
> >> @@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
> >> __u32 reserved[5];
> >> };
> >>
> >> +/**
> >> + * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
> >> + * @index: the first buffer to be deleted
> >> + * @count: number of buffers to delete
> >> + * @type: enum v4l2_buf_type
> >> + * @reserved: future extensions
> >> + */
> >> +struct v4l2_delete_buffers {
> >> + __u32 index;
> >> + __u32 count;
> >> + __u32 type;
> >> + __u32 reserved[13];
> >> +};
> >> +
> >> /*
> >> * I O C T L C O D E S F O R V I D E O D E V I C E S
> >> *
> >> @@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
> >> #define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
> >>
> >> #define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
> >> +#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
> >> +
> >>
> >> /* Reminder: when adding new ioctls please add support for them to
> >> drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
> > Do we also need to add support for the new ioctl in there?
>
> It only use _u32, is aligned on cache boundary and doesn't use pointer.
> For me 32 and 64 bits structures are identical so it doesn't need to be convert.
> Maybe I'm wrong when testing it with pahole ?
Ah, right. I double checked the compat code and indeed if an ioctl is
not listed there, it will just use the default copy_from_user, so we
should be good.
Maybe one day we should update that comment to explain how to check if
it's necessary to add a compat handler.
Best regards,
Tomasz
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
@ 2023-11-10 8:58 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-10 8:58 UTC (permalink / raw)
To: Benjamin Gaignard, Hans Verkuil
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Thu, Nov 9, 2023 at 7:10 PM Benjamin Gaignard
<benjamin.gaignard@collabora.com> wrote:
>
>
> Le 09/11/2023 à 10:30, Tomasz Figa a écrit :
> > On Tue, Oct 31, 2023 at 05:31:02PM +0100, Benjamin Gaignard wrote:
> >> VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
> >> The number of buffers to delete in given by count field of
> >> struct v4l2_delete_buffers and the range start at the index
> >> specified in the same structure.
> >>
> >> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> >> ---
> >> .../userspace-api/media/v4l/user-func.rst | 1 +
> >> .../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
> >> .../media/v4l/vidioc-reqbufs.rst | 1 +
> >> .../media/common/videobuf2/videobuf2-core.c | 30 +++++++
> >> .../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
> >> drivers/media/v4l2-core/v4l2-dev.c | 1 +
> >> drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
> >> include/media/v4l2-ioctl.h | 4 +
> >> include/media/videobuf2-core.h | 12 +++
> >> include/media/videobuf2-v4l2.h | 13 +++
> >> include/uapi/linux/videodev2.h | 17 ++++
> >> 11 files changed, 196 insertions(+)
> >> create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >>
> >> diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
> >> index 15ff0bf7bbe6..3fd567695477 100644
> >> --- a/Documentation/userspace-api/media/v4l/user-func.rst
> >> +++ b/Documentation/userspace-api/media/v4l/user-func.rst
> >> @@ -17,6 +17,7 @@ Function Reference
> >> vidioc-dbg-g-chip-info
> >> vidioc-dbg-g-register
> >> vidioc-decoder-cmd
> >> + vidioc-delete-bufs
> >> vidioc-dqevent
> >> vidioc-dv-timings-cap
> >> vidioc-encoder-cmd
> >> diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >> new file mode 100644
> >> index 000000000000..4791df1395d6
> >> --- /dev/null
> >> +++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >> @@ -0,0 +1,80 @@
> >> +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
> >> +.. c:namespace:: V4L
> >> +
> >> +.. _VIDIOC_DELETE_BUFS:
> >> +
> >> +************************
> >> +ioctl VIDIOC_DELETE_BUFS
> >> +************************
> >> +
> >> +Name
> >> +====
> >> +
> >> +VIDIOC_DELETE_BUFS - Deletes buffers from a queue
> >> +Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
> >> +capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
> >> +are invoked.
> >> +
> >> +Synopsis
> >> +========
> >> +
> >> +.. c:macro:: VIDIOC_DELETE_BUFs
> >> +
> >> +``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
> >> +
> >> +Arguments
> >> +=========
> >> +
> >> +``fd``
> >> + File descriptor returned by :c:func:`open()`.
> >> +
> >> +``argp``
> >> + Pointer to struct :c:type:`v4l2_delete_buffers`.
> >> +
> >> +Description
> >> +===========
> >> +
> >> +Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
> >> +delete buffers from a queue.
> >> +
> >> +.. c:type:: v4l2_delete_buffers
> >> +
> >> +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
> >> +
> >> +.. flat-table:: struct v4l2_delete_buffers
> >> + :header-rows: 0
> >> + :stub-columns: 0
> >> + :widths: 1 1 2
> >> +
> >> + * - __u32
> >> + - ``index``
> >> + - The starting buffer index to delete.
> >> + * - __u32
> >> + - ``count``
> >> + - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
> >> + All buffers in this range must be valid and in DEQUEUED state.
> > I wonder if this wouldn't be an inconvenience for the userspace. Would
> > there be anything wrong with allowing ranges with holes?
> > (Agreed about the DEQUEUED part of course.)
>
> For me a range as to be valid but the matter of taste.
>
@Hans Verkuil do you have an opinion?
I could imagine that applications may want to just delete multiple
disjoint ranges in one ioctl, which wouldn't be possible if we
prohibit holes in the ranges.
> >
> >> + In error case errno is set to ``EINVAL`` error code and index returns the index of
> >> + the invalid buffer.
> >> + If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
> > Hmm, do we care about index if count is zero?
>
> No we don't I will change that.
>
> >
> >> + * - __u32
> >> + - ``type``
> >> + - Type of the stream or buffers, this is the same as the struct
> >> + :c:type:`v4l2_format` ``type`` field. See
> >> + :c:type:`v4l2_buf_type` for valid values.
> >> + * - __u32
> >> + - ``reserved``\ [13]
> >> + - A place holder for future extensions. Drivers and applications
> >> + must set the array to zero.
> >> +
> >> +Return Value
> >> +============
> >> +
> >> +On success 0 is returned, on error -1 and the ``errno`` variable is set
> >> +appropriately. The generic error codes are described at the
> >> +:ref:`Generic Error Codes <gen-errors>` chapter.
> >> +
> >> +EBUSY
> >> + File I/O is in progress.
> >> +
> >> +EINVAL
> >> + The buffer ``index`` doesn't exist in the queue.
> >> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >> index 0b3a41a45d05..14d4a49c2945 100644
> >> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >> @@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
> >> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
> >> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
> >> .. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
> >> +.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
> >>
> >> .. raw:: latex
> >>
> >> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> >> index 010a8bca0240..7068930a0ba6 100644
> >> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> >> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> >> @@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> >> }
> >> EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
> >>
> >> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
> >> +{
> >> + unsigned int i, ret = 0;
> >> +
> >> + if (start == 0 && count == 0)
> > I guess related to the earlier comment, but why do we care about start
> > being zero?
> >
> >> + return 0;
> >> +
> >> + mutex_lock(&q->mmap_lock);
> >> +
> >> + for (i = start; i < start + count && i < q->max_num_buffers; i++) {
> >> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
> >> +
> >> + if (!vb) {
> >> + ret = -EINVAL;
> >> + goto unlock;
> >> + }
> >> + if (vb->state != VB2_BUF_STATE_DEQUEUED) {
> >> + ret = -EINVAL;
> >> + goto unlock;
> >> + }
> >> + }
> >> + __vb2_queue_free(q, start, count);
> >> + dprintk(q, 2, "buffers deleted\n");
> >> +
> >> +unlock:
> >> + mutex_unlock(&q->mmap_lock);
> >> + return ret;
> >> +}
> >> +EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
> >> +
> >> /*
> >> * vb2_start_streaming() - Attempt to start streaming.
> >> * @q: videobuf2 queue
> >> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >> index 56daf3b5b2ba..f003618efbc1 100644
> >> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >> @@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
> >> if (q->supports_requests)
> >> *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
> >> #endif
> >> + if (q->supports_delete_bufs)
> >> + *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
> >> }
> >>
> >> static void validate_memory_flags(struct vb2_queue *q,
> >> @@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> >> }
> >> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
> >>
> >> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
> >> +{
> >> + return vb2_core_delete_bufs(q, d->index, d->count);
> >> +}
> >> +EXPORT_SYMBOL_GPL(vb2_delete_bufs);
> >> +
> >> int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
> >> {
> >> unsigned requested_planes = 1;
> >> @@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
> >>
> >> /* vb2 ioctl helpers */
> >>
> >> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> >> + struct v4l2_delete_buffers *p)
> >> +{
> >> + struct video_device *vdev = video_devdata(file);
> >> +
> >> + if (vb2_queue_is_busy(vdev->queue, file))
> >> + return -EBUSY;
> >> +
> >> + return vb2_delete_bufs(vdev->queue, p);
> >> +}
> >> +EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
> >> +
> >> int vb2_ioctl_reqbufs(struct file *file, void *priv,
> >> struct v4l2_requestbuffers *p)
> >> {
> >> diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
> >> index f81279492682..215654fd6581 100644
> >> --- a/drivers/media/v4l2-core/v4l2-dev.c
> >> +++ b/drivers/media/v4l2-core/v4l2-dev.c
> >> @@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
> >> SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
> >> SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
> >> SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
> >> + SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
> >> }
> >>
> >> if (is_vid || is_vbi || is_meta) {
> >> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
> >> index 4d90424cbfc4..e9dcf439f9f3 100644
> >> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> >> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> >> @@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
> >> v4l_print_format(&p->format, write_only);
> >> }
> >>
> >> +static void v4l_print_delete_buffers(const void *arg, bool write_only)
> >> +{
> >> + const struct v4l2_delete_buffers *p = arg;
> >> +
> >> + pr_cont("index=%u, count=%u\n", p->index, p->count);
> >> +}
> >> +
> >> static void v4l_print_streamparm(const void *arg, bool write_only)
> >> {
> >> const struct v4l2_streamparm *p = arg;
> >> @@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
> >> return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
> >> }
> >>
> >> +static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
> >> + struct file *file, void *fh, void *arg)
> >> +{
> >> + struct v4l2_delete_buffers *delete = arg;
> >> + int ret = check_fmt(file, delete->type);
> > Should we also have
> >
> > memset_after(delete, 0, type);
> >
> > here similar to how other ioctl handlers clear the reserved fields?
>
> I will add it.
>
> >
> >> +
> >> + return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
> >> +}
> >> +
> >> static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
> >> struct file *file, void *fh, void *arg)
> >> {
> >> @@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
> >> IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
> >> IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
> >> IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
> >> + IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
> >> };
> >> #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
> >>
> >> diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
> >> index edb733f21604..55afbde54211 100644
> >> --- a/include/media/v4l2-ioctl.h
> >> +++ b/include/media/v4l2-ioctl.h
> >> @@ -163,6 +163,8 @@ struct v4l2_fh;
> >> * :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
> >> * @vidioc_prepare_buf: pointer to the function that implements
> >> * :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
> >> + * @vidioc_delete_bufs: pointer to the function that implements
> >> + * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
> >> * @vidioc_overlay: pointer to the function that implements
> >> * :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
> >> * @vidioc_g_fbuf: pointer to the function that implements
> >> @@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
> >> struct v4l2_create_buffers *b);
> >> int (*vidioc_prepare_buf)(struct file *file, void *fh,
> >> struct v4l2_buffer *b);
> >> + int (*vidioc_delete_bufs)(struct file *file, void *fh,
> >> + struct v4l2_delete_buffers *d);
> >>
> >> int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
> >> int (*vidioc_g_fbuf)(struct file *file, void *fh,
> >> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> >> index 288477075a0e..db3bd986624e 100644
> >> --- a/include/media/videobuf2-core.h
> >> +++ b/include/media/videobuf2-core.h
> >> @@ -507,6 +507,7 @@ struct vb2_buf_ops {
> >> * @supports_requests: this queue supports the Request API.
> >> * @requires_requests: this queue requires the Request API. If this is set to 1,
> >> * then supports_requests must be set to 1 as well.
> >> + * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
> >> * @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
> >> * time this is called. Set to 0 when the queue is canceled.
> >> * If this is 1, then you cannot queue buffers from a request.
> >> @@ -595,6 +596,7 @@ struct vb2_queue {
> >> unsigned int quirk_poll_must_check_waiting_for_buffers:1;
> >> unsigned int supports_requests:1;
> >> unsigned int requires_requests:1;
> >> + unsigned int supports_delete_bufs:1;
> >> unsigned int uses_qbuf:1;
> >> unsigned int uses_requests:1;
> >> unsigned int allow_cache_hints:1;
> >> @@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> >> */
> >> int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
> >>
> >> +/**
> >> + * vb2_core_delete_bufs() -
> >> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> >> + * @start: first index of the range of buffers to delete.
> >> + * @count: number of buffers to delete.
> >> + *
> >> + * Return: returns zero on success; an error code otherwise.
> >> + */
> >> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
> >> +
> >> /**
> >> * vb2_core_qbuf() - Queue a buffer from userspace
> >> *
> >> diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
> >> index 5a845887850b..79cea8459f52 100644
> >> --- a/include/media/videobuf2-v4l2.h
> >> +++ b/include/media/videobuf2-v4l2.h
> >> @@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
> >> */
> >> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> >> struct v4l2_buffer *b);
> >> +/**
> >> + * vb2_delete_bufs() - Delete buffers from the queue
> >> + *
> >> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> >> + * @d: delete parameter, passed from userspace to
> >> + * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
> >> + *
> >> + * The return values from this function are intended to be directly returned
> >> + * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
> >> + */
> >> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
> >>
> >> /**
> >> * vb2_qbuf() - Queue a buffer from userspace
> >> @@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
> >> int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
> >> int vb2_ioctl_expbuf(struct file *file, void *priv,
> >> struct v4l2_exportbuffer *p);
> >> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> >> + struct v4l2_delete_buffers *p);
> >>
> >> /* struct v4l2_file_operations helpers */
> >>
> >> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> >> index 13ddb5abf584..96e105149906 100644
> >> --- a/include/uapi/linux/videodev2.h
> >> +++ b/include/uapi/linux/videodev2.h
> >> @@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
> >> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
> >> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
> >> #define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
> >> +#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
> >>
> >> /**
> >> * struct v4l2_plane - plane info for multi-planar buffers
> >> @@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
> >> __u32 reserved[5];
> >> };
> >>
> >> +/**
> >> + * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
> >> + * @index: the first buffer to be deleted
> >> + * @count: number of buffers to delete
> >> + * @type: enum v4l2_buf_type
> >> + * @reserved: future extensions
> >> + */
> >> +struct v4l2_delete_buffers {
> >> + __u32 index;
> >> + __u32 count;
> >> + __u32 type;
> >> + __u32 reserved[13];
> >> +};
> >> +
> >> /*
> >> * I O C T L C O D E S F O R V I D E O D E V I C E S
> >> *
> >> @@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
> >> #define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
> >>
> >> #define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
> >> +#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
> >> +
> >>
> >> /* Reminder: when adding new ioctls please add support for them to
> >> drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
> > Do we also need to add support for the new ioctl in there?
>
> It only use _u32, is aligned on cache boundary and doesn't use pointer.
> For me 32 and 64 bits structures are identical so it doesn't need to be convert.
> Maybe I'm wrong when testing it with pahole ?
Ah, right. I double checked the compat code and indeed if an ioctl is
not listed there, it will just use the default copy_from_user, so we
should be good.
Maybe one day we should update that comment to explain how to check if
it's necessary to add a compat handler.
Best regards,
Tomasz
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
@ 2023-11-10 8:58 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-10 8:58 UTC (permalink / raw)
To: Benjamin Gaignard, Hans Verkuil
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On Thu, Nov 9, 2023 at 7:10 PM Benjamin Gaignard
<benjamin.gaignard@collabora.com> wrote:
>
>
> Le 09/11/2023 à 10:30, Tomasz Figa a écrit :
> > On Tue, Oct 31, 2023 at 05:31:02PM +0100, Benjamin Gaignard wrote:
> >> VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
> >> The number of buffers to delete in given by count field of
> >> struct v4l2_delete_buffers and the range start at the index
> >> specified in the same structure.
> >>
> >> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> >> ---
> >> .../userspace-api/media/v4l/user-func.rst | 1 +
> >> .../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
> >> .../media/v4l/vidioc-reqbufs.rst | 1 +
> >> .../media/common/videobuf2/videobuf2-core.c | 30 +++++++
> >> .../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
> >> drivers/media/v4l2-core/v4l2-dev.c | 1 +
> >> drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
> >> include/media/v4l2-ioctl.h | 4 +
> >> include/media/videobuf2-core.h | 12 +++
> >> include/media/videobuf2-v4l2.h | 13 +++
> >> include/uapi/linux/videodev2.h | 17 ++++
> >> 11 files changed, 196 insertions(+)
> >> create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >>
> >> diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
> >> index 15ff0bf7bbe6..3fd567695477 100644
> >> --- a/Documentation/userspace-api/media/v4l/user-func.rst
> >> +++ b/Documentation/userspace-api/media/v4l/user-func.rst
> >> @@ -17,6 +17,7 @@ Function Reference
> >> vidioc-dbg-g-chip-info
> >> vidioc-dbg-g-register
> >> vidioc-decoder-cmd
> >> + vidioc-delete-bufs
> >> vidioc-dqevent
> >> vidioc-dv-timings-cap
> >> vidioc-encoder-cmd
> >> diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >> new file mode 100644
> >> index 000000000000..4791df1395d6
> >> --- /dev/null
> >> +++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >> @@ -0,0 +1,80 @@
> >> +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
> >> +.. c:namespace:: V4L
> >> +
> >> +.. _VIDIOC_DELETE_BUFS:
> >> +
> >> +************************
> >> +ioctl VIDIOC_DELETE_BUFS
> >> +************************
> >> +
> >> +Name
> >> +====
> >> +
> >> +VIDIOC_DELETE_BUFS - Deletes buffers from a queue
> >> +Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
> >> +capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
> >> +are invoked.
> >> +
> >> +Synopsis
> >> +========
> >> +
> >> +.. c:macro:: VIDIOC_DELETE_BUFs
> >> +
> >> +``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
> >> +
> >> +Arguments
> >> +=========
> >> +
> >> +``fd``
> >> + File descriptor returned by :c:func:`open()`.
> >> +
> >> +``argp``
> >> + Pointer to struct :c:type:`v4l2_delete_buffers`.
> >> +
> >> +Description
> >> +===========
> >> +
> >> +Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
> >> +delete buffers from a queue.
> >> +
> >> +.. c:type:: v4l2_delete_buffers
> >> +
> >> +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
> >> +
> >> +.. flat-table:: struct v4l2_delete_buffers
> >> + :header-rows: 0
> >> + :stub-columns: 0
> >> + :widths: 1 1 2
> >> +
> >> + * - __u32
> >> + - ``index``
> >> + - The starting buffer index to delete.
> >> + * - __u32
> >> + - ``count``
> >> + - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
> >> + All buffers in this range must be valid and in DEQUEUED state.
> > I wonder if this wouldn't be an inconvenience for the userspace. Would
> > there be anything wrong with allowing ranges with holes?
> > (Agreed about the DEQUEUED part of course.)
>
> For me a range as to be valid but the matter of taste.
>
@Hans Verkuil do you have an opinion?
I could imagine that applications may want to just delete multiple
disjoint ranges in one ioctl, which wouldn't be possible if we
prohibit holes in the ranges.
> >
> >> + In error case errno is set to ``EINVAL`` error code and index returns the index of
> >> + the invalid buffer.
> >> + If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
> > Hmm, do we care about index if count is zero?
>
> No we don't I will change that.
>
> >
> >> + * - __u32
> >> + - ``type``
> >> + - Type of the stream or buffers, this is the same as the struct
> >> + :c:type:`v4l2_format` ``type`` field. See
> >> + :c:type:`v4l2_buf_type` for valid values.
> >> + * - __u32
> >> + - ``reserved``\ [13]
> >> + - A place holder for future extensions. Drivers and applications
> >> + must set the array to zero.
> >> +
> >> +Return Value
> >> +============
> >> +
> >> +On success 0 is returned, on error -1 and the ``errno`` variable is set
> >> +appropriately. The generic error codes are described at the
> >> +:ref:`Generic Error Codes <gen-errors>` chapter.
> >> +
> >> +EBUSY
> >> + File I/O is in progress.
> >> +
> >> +EINVAL
> >> + The buffer ``index`` doesn't exist in the queue.
> >> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >> index 0b3a41a45d05..14d4a49c2945 100644
> >> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >> @@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
> >> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
> >> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
> >> .. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
> >> +.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
> >>
> >> .. raw:: latex
> >>
> >> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> >> index 010a8bca0240..7068930a0ba6 100644
> >> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> >> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> >> @@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> >> }
> >> EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
> >>
> >> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
> >> +{
> >> + unsigned int i, ret = 0;
> >> +
> >> + if (start == 0 && count == 0)
> > I guess related to the earlier comment, but why do we care about start
> > being zero?
> >
> >> + return 0;
> >> +
> >> + mutex_lock(&q->mmap_lock);
> >> +
> >> + for (i = start; i < start + count && i < q->max_num_buffers; i++) {
> >> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
> >> +
> >> + if (!vb) {
> >> + ret = -EINVAL;
> >> + goto unlock;
> >> + }
> >> + if (vb->state != VB2_BUF_STATE_DEQUEUED) {
> >> + ret = -EINVAL;
> >> + goto unlock;
> >> + }
> >> + }
> >> + __vb2_queue_free(q, start, count);
> >> + dprintk(q, 2, "buffers deleted\n");
> >> +
> >> +unlock:
> >> + mutex_unlock(&q->mmap_lock);
> >> + return ret;
> >> +}
> >> +EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
> >> +
> >> /*
> >> * vb2_start_streaming() - Attempt to start streaming.
> >> * @q: videobuf2 queue
> >> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >> index 56daf3b5b2ba..f003618efbc1 100644
> >> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >> @@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
> >> if (q->supports_requests)
> >> *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
> >> #endif
> >> + if (q->supports_delete_bufs)
> >> + *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
> >> }
> >>
> >> static void validate_memory_flags(struct vb2_queue *q,
> >> @@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> >> }
> >> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
> >>
> >> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
> >> +{
> >> + return vb2_core_delete_bufs(q, d->index, d->count);
> >> +}
> >> +EXPORT_SYMBOL_GPL(vb2_delete_bufs);
> >> +
> >> int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
> >> {
> >> unsigned requested_planes = 1;
> >> @@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
> >>
> >> /* vb2 ioctl helpers */
> >>
> >> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> >> + struct v4l2_delete_buffers *p)
> >> +{
> >> + struct video_device *vdev = video_devdata(file);
> >> +
> >> + if (vb2_queue_is_busy(vdev->queue, file))
> >> + return -EBUSY;
> >> +
> >> + return vb2_delete_bufs(vdev->queue, p);
> >> +}
> >> +EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
> >> +
> >> int vb2_ioctl_reqbufs(struct file *file, void *priv,
> >> struct v4l2_requestbuffers *p)
> >> {
> >> diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
> >> index f81279492682..215654fd6581 100644
> >> --- a/drivers/media/v4l2-core/v4l2-dev.c
> >> +++ b/drivers/media/v4l2-core/v4l2-dev.c
> >> @@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
> >> SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
> >> SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
> >> SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
> >> + SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
> >> }
> >>
> >> if (is_vid || is_vbi || is_meta) {
> >> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
> >> index 4d90424cbfc4..e9dcf439f9f3 100644
> >> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> >> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> >> @@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
> >> v4l_print_format(&p->format, write_only);
> >> }
> >>
> >> +static void v4l_print_delete_buffers(const void *arg, bool write_only)
> >> +{
> >> + const struct v4l2_delete_buffers *p = arg;
> >> +
> >> + pr_cont("index=%u, count=%u\n", p->index, p->count);
> >> +}
> >> +
> >> static void v4l_print_streamparm(const void *arg, bool write_only)
> >> {
> >> const struct v4l2_streamparm *p = arg;
> >> @@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
> >> return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
> >> }
> >>
> >> +static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
> >> + struct file *file, void *fh, void *arg)
> >> +{
> >> + struct v4l2_delete_buffers *delete = arg;
> >> + int ret = check_fmt(file, delete->type);
> > Should we also have
> >
> > memset_after(delete, 0, type);
> >
> > here similar to how other ioctl handlers clear the reserved fields?
>
> I will add it.
>
> >
> >> +
> >> + return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
> >> +}
> >> +
> >> static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
> >> struct file *file, void *fh, void *arg)
> >> {
> >> @@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
> >> IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
> >> IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
> >> IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
> >> + IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
> >> };
> >> #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
> >>
> >> diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
> >> index edb733f21604..55afbde54211 100644
> >> --- a/include/media/v4l2-ioctl.h
> >> +++ b/include/media/v4l2-ioctl.h
> >> @@ -163,6 +163,8 @@ struct v4l2_fh;
> >> * :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
> >> * @vidioc_prepare_buf: pointer to the function that implements
> >> * :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
> >> + * @vidioc_delete_bufs: pointer to the function that implements
> >> + * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
> >> * @vidioc_overlay: pointer to the function that implements
> >> * :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
> >> * @vidioc_g_fbuf: pointer to the function that implements
> >> @@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
> >> struct v4l2_create_buffers *b);
> >> int (*vidioc_prepare_buf)(struct file *file, void *fh,
> >> struct v4l2_buffer *b);
> >> + int (*vidioc_delete_bufs)(struct file *file, void *fh,
> >> + struct v4l2_delete_buffers *d);
> >>
> >> int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
> >> int (*vidioc_g_fbuf)(struct file *file, void *fh,
> >> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> >> index 288477075a0e..db3bd986624e 100644
> >> --- a/include/media/videobuf2-core.h
> >> +++ b/include/media/videobuf2-core.h
> >> @@ -507,6 +507,7 @@ struct vb2_buf_ops {
> >> * @supports_requests: this queue supports the Request API.
> >> * @requires_requests: this queue requires the Request API. If this is set to 1,
> >> * then supports_requests must be set to 1 as well.
> >> + * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
> >> * @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
> >> * time this is called. Set to 0 when the queue is canceled.
> >> * If this is 1, then you cannot queue buffers from a request.
> >> @@ -595,6 +596,7 @@ struct vb2_queue {
> >> unsigned int quirk_poll_must_check_waiting_for_buffers:1;
> >> unsigned int supports_requests:1;
> >> unsigned int requires_requests:1;
> >> + unsigned int supports_delete_bufs:1;
> >> unsigned int uses_qbuf:1;
> >> unsigned int uses_requests:1;
> >> unsigned int allow_cache_hints:1;
> >> @@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> >> */
> >> int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
> >>
> >> +/**
> >> + * vb2_core_delete_bufs() -
> >> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> >> + * @start: first index of the range of buffers to delete.
> >> + * @count: number of buffers to delete.
> >> + *
> >> + * Return: returns zero on success; an error code otherwise.
> >> + */
> >> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
> >> +
> >> /**
> >> * vb2_core_qbuf() - Queue a buffer from userspace
> >> *
> >> diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
> >> index 5a845887850b..79cea8459f52 100644
> >> --- a/include/media/videobuf2-v4l2.h
> >> +++ b/include/media/videobuf2-v4l2.h
> >> @@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
> >> */
> >> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> >> struct v4l2_buffer *b);
> >> +/**
> >> + * vb2_delete_bufs() - Delete buffers from the queue
> >> + *
> >> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> >> + * @d: delete parameter, passed from userspace to
> >> + * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
> >> + *
> >> + * The return values from this function are intended to be directly returned
> >> + * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
> >> + */
> >> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
> >>
> >> /**
> >> * vb2_qbuf() - Queue a buffer from userspace
> >> @@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
> >> int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
> >> int vb2_ioctl_expbuf(struct file *file, void *priv,
> >> struct v4l2_exportbuffer *p);
> >> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> >> + struct v4l2_delete_buffers *p);
> >>
> >> /* struct v4l2_file_operations helpers */
> >>
> >> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> >> index 13ddb5abf584..96e105149906 100644
> >> --- a/include/uapi/linux/videodev2.h
> >> +++ b/include/uapi/linux/videodev2.h
> >> @@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
> >> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
> >> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
> >> #define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
> >> +#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
> >>
> >> /**
> >> * struct v4l2_plane - plane info for multi-planar buffers
> >> @@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
> >> __u32 reserved[5];
> >> };
> >>
> >> +/**
> >> + * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
> >> + * @index: the first buffer to be deleted
> >> + * @count: number of buffers to delete
> >> + * @type: enum v4l2_buf_type
> >> + * @reserved: future extensions
> >> + */
> >> +struct v4l2_delete_buffers {
> >> + __u32 index;
> >> + __u32 count;
> >> + __u32 type;
> >> + __u32 reserved[13];
> >> +};
> >> +
> >> /*
> >> * I O C T L C O D E S F O R V I D E O D E V I C E S
> >> *
> >> @@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
> >> #define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
> >>
> >> #define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
> >> +#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
> >> +
> >>
> >> /* Reminder: when adding new ioctls please add support for them to
> >> drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
> > Do we also need to add support for the new ioctl in there?
>
> It only use _u32, is aligned on cache boundary and doesn't use pointer.
> For me 32 and 64 bits structures are identical so it doesn't need to be convert.
> Maybe I'm wrong when testing it with pahole ?
Ah, right. I double checked the compat code and indeed if an ioctl is
not listed there, it will just use the default copy_from_user, so we
should be good.
Maybe one day we should update that comment to explain how to check if
it's necessary to add a compat handler.
Best regards,
Tomasz
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
2023-11-10 8:58 ` Tomasz Figa
(?)
@ 2023-11-10 9:14 ` Hans Verkuil
-1 siblings, 0 replies; 399+ messages in thread
From: Hans Verkuil @ 2023-11-10 9:14 UTC (permalink / raw)
To: Tomasz Figa, Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On 10/11/2023 09:58, Tomasz Figa wrote:
> On Thu, Nov 9, 2023 at 7:10 PM Benjamin Gaignard
> <benjamin.gaignard@collabora.com> wrote:
>>
>>
>> Le 09/11/2023 à 10:30, Tomasz Figa a écrit :
>>> On Tue, Oct 31, 2023 at 05:31:02PM +0100, Benjamin Gaignard wrote:
>>>> VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
>>>> The number of buffers to delete in given by count field of
>>>> struct v4l2_delete_buffers and the range start at the index
>>>> specified in the same structure.
>>>>
>>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>>>> ---
>>>> .../userspace-api/media/v4l/user-func.rst | 1 +
>>>> .../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
>>>> .../media/v4l/vidioc-reqbufs.rst | 1 +
>>>> .../media/common/videobuf2/videobuf2-core.c | 30 +++++++
>>>> .../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
>>>> drivers/media/v4l2-core/v4l2-dev.c | 1 +
>>>> drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
>>>> include/media/v4l2-ioctl.h | 4 +
>>>> include/media/videobuf2-core.h | 12 +++
>>>> include/media/videobuf2-v4l2.h | 13 +++
>>>> include/uapi/linux/videodev2.h | 17 ++++
>>>> 11 files changed, 196 insertions(+)
>>>> create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>>>>
>>>> diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
>>>> index 15ff0bf7bbe6..3fd567695477 100644
>>>> --- a/Documentation/userspace-api/media/v4l/user-func.rst
>>>> +++ b/Documentation/userspace-api/media/v4l/user-func.rst
>>>> @@ -17,6 +17,7 @@ Function Reference
>>>> vidioc-dbg-g-chip-info
>>>> vidioc-dbg-g-register
>>>> vidioc-decoder-cmd
>>>> + vidioc-delete-bufs
>>>> vidioc-dqevent
>>>> vidioc-dv-timings-cap
>>>> vidioc-encoder-cmd
>>>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>>>> new file mode 100644
>>>> index 000000000000..4791df1395d6
>>>> --- /dev/null
>>>> +++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>>>> @@ -0,0 +1,80 @@
>>>> +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
>>>> +.. c:namespace:: V4L
>>>> +
>>>> +.. _VIDIOC_DELETE_BUFS:
>>>> +
>>>> +************************
>>>> +ioctl VIDIOC_DELETE_BUFS
>>>> +************************
>>>> +
>>>> +Name
>>>> +====
>>>> +
>>>> +VIDIOC_DELETE_BUFS - Deletes buffers from a queue
>>>> +Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
>>>> +capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
>>>> +are invoked.
>>>> +
>>>> +Synopsis
>>>> +========
>>>> +
>>>> +.. c:macro:: VIDIOC_DELETE_BUFs
>>>> +
>>>> +``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
>>>> +
>>>> +Arguments
>>>> +=========
>>>> +
>>>> +``fd``
>>>> + File descriptor returned by :c:func:`open()`.
>>>> +
>>>> +``argp``
>>>> + Pointer to struct :c:type:`v4l2_delete_buffers`.
>>>> +
>>>> +Description
>>>> +===========
>>>> +
>>>> +Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
>>>> +delete buffers from a queue.
>>>> +
>>>> +.. c:type:: v4l2_delete_buffers
>>>> +
>>>> +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
>>>> +
>>>> +.. flat-table:: struct v4l2_delete_buffers
>>>> + :header-rows: 0
>>>> + :stub-columns: 0
>>>> + :widths: 1 1 2
>>>> +
>>>> + * - __u32
>>>> + - ``index``
>>>> + - The starting buffer index to delete.
>>>> + * - __u32
>>>> + - ``count``
>>>> + - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
>>>> + All buffers in this range must be valid and in DEQUEUED state.
>>> I wonder if this wouldn't be an inconvenience for the userspace. Would
>>> there be anything wrong with allowing ranges with holes?
>>> (Agreed about the DEQUEUED part of course.)
>>
>> For me a range as to be valid but the matter of taste.
>>
>
> @Hans Verkuil do you have an opinion?
> I could imagine that applications may want to just delete multiple
> disjoint ranges in one ioctl, which wouldn't be possible if we
> prohibit holes in the ranges.
First of all I want to state that I am mostly concentrating on patches 1-50 to get
those merged first. The actual delete_bufs patches will need more review from me.
That said, while I do not have a very strong opinion on this, I do feel it is better
to be strict about this. It can always be relaxed later. Deleting buffers is an
important operation, and userspace should know what it is doing. Deleting non-existing
buffers seems iffy to me.
Regards,
Hans
>
>>>
>>>> + In error case errno is set to ``EINVAL`` error code and index returns the index of
>>>> + the invalid buffer.
>>>> + If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
>>> Hmm, do we care about index if count is zero?
>>
>> No we don't I will change that.
>>
>>>
>>>> + * - __u32
>>>> + - ``type``
>>>> + - Type of the stream or buffers, this is the same as the struct
>>>> + :c:type:`v4l2_format` ``type`` field. See
>>>> + :c:type:`v4l2_buf_type` for valid values.
>>>> + * - __u32
>>>> + - ``reserved``\ [13]
>>>> + - A place holder for future extensions. Drivers and applications
>>>> + must set the array to zero.
>>>> +
>>>> +Return Value
>>>> +============
>>>> +
>>>> +On success 0 is returned, on error -1 and the ``errno`` variable is set
>>>> +appropriately. The generic error codes are described at the
>>>> +:ref:`Generic Error Codes <gen-errors>` chapter.
>>>> +
>>>> +EBUSY
>>>> + File I/O is in progress.
>>>> +
>>>> +EINVAL
>>>> + The buffer ``index`` doesn't exist in the queue.
>>>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>>>> index 0b3a41a45d05..14d4a49c2945 100644
>>>> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>>>> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>>>> @@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
>>>> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
>>>> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
>>>> .. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
>>>> +.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
>>>>
>>>> .. raw:: latex
>>>>
>>>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>>>> index 010a8bca0240..7068930a0ba6 100644
>>>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>>>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>>>> @@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
>>>> }
>>>> EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
>>>>
>>>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
>>>> +{
>>>> + unsigned int i, ret = 0;
>>>> +
>>>> + if (start == 0 && count == 0)
>>> I guess related to the earlier comment, but why do we care about start
>>> being zero?
>>>
>>>> + return 0;
>>>> +
>>>> + mutex_lock(&q->mmap_lock);
>>>> +
>>>> + for (i = start; i < start + count && i < q->max_num_buffers; i++) {
>>>> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
>>>> +
>>>> + if (!vb) {
>>>> + ret = -EINVAL;
>>>> + goto unlock;
>>>> + }
>>>> + if (vb->state != VB2_BUF_STATE_DEQUEUED) {
>>>> + ret = -EINVAL;
>>>> + goto unlock;
>>>> + }
>>>> + }
>>>> + __vb2_queue_free(q, start, count);
>>>> + dprintk(q, 2, "buffers deleted\n");
>>>> +
>>>> +unlock:
>>>> + mutex_unlock(&q->mmap_lock);
>>>> + return ret;
>>>> +}
>>>> +EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
>>>> +
>>>> /*
>>>> * vb2_start_streaming() - Attempt to start streaming.
>>>> * @q: videobuf2 queue
>>>> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>>>> index 56daf3b5b2ba..f003618efbc1 100644
>>>> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
>>>> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>>>> @@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
>>>> if (q->supports_requests)
>>>> *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
>>>> #endif
>>>> + if (q->supports_delete_bufs)
>>>> + *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
>>>> }
>>>>
>>>> static void validate_memory_flags(struct vb2_queue *q,
>>>> @@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
>>>> }
>>>> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
>>>>
>>>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
>>>> +{
>>>> + return vb2_core_delete_bufs(q, d->index, d->count);
>>>> +}
>>>> +EXPORT_SYMBOL_GPL(vb2_delete_bufs);
>>>> +
>>>> int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
>>>> {
>>>> unsigned requested_planes = 1;
>>>> @@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
>>>>
>>>> /* vb2 ioctl helpers */
>>>>
>>>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
>>>> + struct v4l2_delete_buffers *p)
>>>> +{
>>>> + struct video_device *vdev = video_devdata(file);
>>>> +
>>>> + if (vb2_queue_is_busy(vdev->queue, file))
>>>> + return -EBUSY;
>>>> +
>>>> + return vb2_delete_bufs(vdev->queue, p);
>>>> +}
>>>> +EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
>>>> +
>>>> int vb2_ioctl_reqbufs(struct file *file, void *priv,
>>>> struct v4l2_requestbuffers *p)
>>>> {
>>>> diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
>>>> index f81279492682..215654fd6581 100644
>>>> --- a/drivers/media/v4l2-core/v4l2-dev.c
>>>> +++ b/drivers/media/v4l2-core/v4l2-dev.c
>>>> @@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
>>>> SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
>>>> SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
>>>> SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
>>>> + SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
>>>> }
>>>>
>>>> if (is_vid || is_vbi || is_meta) {
>>>> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
>>>> index 4d90424cbfc4..e9dcf439f9f3 100644
>>>> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
>>>> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
>>>> @@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
>>>> v4l_print_format(&p->format, write_only);
>>>> }
>>>>
>>>> +static void v4l_print_delete_buffers(const void *arg, bool write_only)
>>>> +{
>>>> + const struct v4l2_delete_buffers *p = arg;
>>>> +
>>>> + pr_cont("index=%u, count=%u\n", p->index, p->count);
>>>> +}
>>>> +
>>>> static void v4l_print_streamparm(const void *arg, bool write_only)
>>>> {
>>>> const struct v4l2_streamparm *p = arg;
>>>> @@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
>>>> return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
>>>> }
>>>>
>>>> +static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
>>>> + struct file *file, void *fh, void *arg)
>>>> +{
>>>> + struct v4l2_delete_buffers *delete = arg;
>>>> + int ret = check_fmt(file, delete->type);
>>> Should we also have
>>>
>>> memset_after(delete, 0, type);
>>>
>>> here similar to how other ioctl handlers clear the reserved fields?
>>
>> I will add it.
>>
>>>
>>>> +
>>>> + return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
>>>> +}
>>>> +
>>>> static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
>>>> struct file *file, void *fh, void *arg)
>>>> {
>>>> @@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
>>>> IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
>>>> IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
>>>> IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
>>>> + IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
>>>> };
>>>> #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
>>>>
>>>> diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
>>>> index edb733f21604..55afbde54211 100644
>>>> --- a/include/media/v4l2-ioctl.h
>>>> +++ b/include/media/v4l2-ioctl.h
>>>> @@ -163,6 +163,8 @@ struct v4l2_fh;
>>>> * :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
>>>> * @vidioc_prepare_buf: pointer to the function that implements
>>>> * :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
>>>> + * @vidioc_delete_bufs: pointer to the function that implements
>>>> + * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
>>>> * @vidioc_overlay: pointer to the function that implements
>>>> * :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
>>>> * @vidioc_g_fbuf: pointer to the function that implements
>>>> @@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
>>>> struct v4l2_create_buffers *b);
>>>> int (*vidioc_prepare_buf)(struct file *file, void *fh,
>>>> struct v4l2_buffer *b);
>>>> + int (*vidioc_delete_bufs)(struct file *file, void *fh,
>>>> + struct v4l2_delete_buffers *d);
>>>>
>>>> int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
>>>> int (*vidioc_g_fbuf)(struct file *file, void *fh,
>>>> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
>>>> index 288477075a0e..db3bd986624e 100644
>>>> --- a/include/media/videobuf2-core.h
>>>> +++ b/include/media/videobuf2-core.h
>>>> @@ -507,6 +507,7 @@ struct vb2_buf_ops {
>>>> * @supports_requests: this queue supports the Request API.
>>>> * @requires_requests: this queue requires the Request API. If this is set to 1,
>>>> * then supports_requests must be set to 1 as well.
>>>> + * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
>>>> * @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
>>>> * time this is called. Set to 0 when the queue is canceled.
>>>> * If this is 1, then you cannot queue buffers from a request.
>>>> @@ -595,6 +596,7 @@ struct vb2_queue {
>>>> unsigned int quirk_poll_must_check_waiting_for_buffers:1;
>>>> unsigned int supports_requests:1;
>>>> unsigned int requires_requests:1;
>>>> + unsigned int supports_delete_bufs:1;
>>>> unsigned int uses_qbuf:1;
>>>> unsigned int uses_requests:1;
>>>> unsigned int allow_cache_hints:1;
>>>> @@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>>>> */
>>>> int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>>>>
>>>> +/**
>>>> + * vb2_core_delete_bufs() -
>>>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
>>>> + * @start: first index of the range of buffers to delete.
>>>> + * @count: number of buffers to delete.
>>>> + *
>>>> + * Return: returns zero on success; an error code otherwise.
>>>> + */
>>>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
>>>> +
>>>> /**
>>>> * vb2_core_qbuf() - Queue a buffer from userspace
>>>> *
>>>> diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
>>>> index 5a845887850b..79cea8459f52 100644
>>>> --- a/include/media/videobuf2-v4l2.h
>>>> +++ b/include/media/videobuf2-v4l2.h
>>>> @@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
>>>> */
>>>> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
>>>> struct v4l2_buffer *b);
>>>> +/**
>>>> + * vb2_delete_bufs() - Delete buffers from the queue
>>>> + *
>>>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
>>>> + * @d: delete parameter, passed from userspace to
>>>> + * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
>>>> + *
>>>> + * The return values from this function are intended to be directly returned
>>>> + * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
>>>> + */
>>>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
>>>>
>>>> /**
>>>> * vb2_qbuf() - Queue a buffer from userspace
>>>> @@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
>>>> int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
>>>> int vb2_ioctl_expbuf(struct file *file, void *priv,
>>>> struct v4l2_exportbuffer *p);
>>>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
>>>> + struct v4l2_delete_buffers *p);
>>>>
>>>> /* struct v4l2_file_operations helpers */
>>>>
>>>> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
>>>> index 13ddb5abf584..96e105149906 100644
>>>> --- a/include/uapi/linux/videodev2.h
>>>> +++ b/include/uapi/linux/videodev2.h
>>>> @@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
>>>> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
>>>> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
>>>> #define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
>>>> +#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
>>>>
>>>> /**
>>>> * struct v4l2_plane - plane info for multi-planar buffers
>>>> @@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
>>>> __u32 reserved[5];
>>>> };
>>>>
>>>> +/**
>>>> + * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
>>>> + * @index: the first buffer to be deleted
>>>> + * @count: number of buffers to delete
>>>> + * @type: enum v4l2_buf_type
>>>> + * @reserved: future extensions
>>>> + */
>>>> +struct v4l2_delete_buffers {
>>>> + __u32 index;
>>>> + __u32 count;
>>>> + __u32 type;
>>>> + __u32 reserved[13];
>>>> +};
>>>> +
>>>> /*
>>>> * I O C T L C O D E S F O R V I D E O D E V I C E S
>>>> *
>>>> @@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
>>>> #define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
>>>>
>>>> #define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
>>>> +#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
>>>> +
>>>>
>>>> /* Reminder: when adding new ioctls please add support for them to
>>>> drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
>>> Do we also need to add support for the new ioctl in there?
>>
>> It only use _u32, is aligned on cache boundary and doesn't use pointer.
>> For me 32 and 64 bits structures are identical so it doesn't need to be convert.
>> Maybe I'm wrong when testing it with pahole ?
>
> Ah, right. I double checked the compat code and indeed if an ioctl is
> not listed there, it will just use the default copy_from_user, so we
> should be good.
>
> Maybe one day we should update that comment to explain how to check if
> it's necessary to add a compat handler.
>
> Best regards,
> Tomasz
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
@ 2023-11-10 9:14 ` Hans Verkuil
0 siblings, 0 replies; 399+ messages in thread
From: Hans Verkuil @ 2023-11-10 9:14 UTC (permalink / raw)
To: Tomasz Figa, Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On 10/11/2023 09:58, Tomasz Figa wrote:
> On Thu, Nov 9, 2023 at 7:10 PM Benjamin Gaignard
> <benjamin.gaignard@collabora.com> wrote:
>>
>>
>> Le 09/11/2023 à 10:30, Tomasz Figa a écrit :
>>> On Tue, Oct 31, 2023 at 05:31:02PM +0100, Benjamin Gaignard wrote:
>>>> VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
>>>> The number of buffers to delete in given by count field of
>>>> struct v4l2_delete_buffers and the range start at the index
>>>> specified in the same structure.
>>>>
>>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>>>> ---
>>>> .../userspace-api/media/v4l/user-func.rst | 1 +
>>>> .../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
>>>> .../media/v4l/vidioc-reqbufs.rst | 1 +
>>>> .../media/common/videobuf2/videobuf2-core.c | 30 +++++++
>>>> .../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
>>>> drivers/media/v4l2-core/v4l2-dev.c | 1 +
>>>> drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
>>>> include/media/v4l2-ioctl.h | 4 +
>>>> include/media/videobuf2-core.h | 12 +++
>>>> include/media/videobuf2-v4l2.h | 13 +++
>>>> include/uapi/linux/videodev2.h | 17 ++++
>>>> 11 files changed, 196 insertions(+)
>>>> create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>>>>
>>>> diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
>>>> index 15ff0bf7bbe6..3fd567695477 100644
>>>> --- a/Documentation/userspace-api/media/v4l/user-func.rst
>>>> +++ b/Documentation/userspace-api/media/v4l/user-func.rst
>>>> @@ -17,6 +17,7 @@ Function Reference
>>>> vidioc-dbg-g-chip-info
>>>> vidioc-dbg-g-register
>>>> vidioc-decoder-cmd
>>>> + vidioc-delete-bufs
>>>> vidioc-dqevent
>>>> vidioc-dv-timings-cap
>>>> vidioc-encoder-cmd
>>>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>>>> new file mode 100644
>>>> index 000000000000..4791df1395d6
>>>> --- /dev/null
>>>> +++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>>>> @@ -0,0 +1,80 @@
>>>> +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
>>>> +.. c:namespace:: V4L
>>>> +
>>>> +.. _VIDIOC_DELETE_BUFS:
>>>> +
>>>> +************************
>>>> +ioctl VIDIOC_DELETE_BUFS
>>>> +************************
>>>> +
>>>> +Name
>>>> +====
>>>> +
>>>> +VIDIOC_DELETE_BUFS - Deletes buffers from a queue
>>>> +Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
>>>> +capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
>>>> +are invoked.
>>>> +
>>>> +Synopsis
>>>> +========
>>>> +
>>>> +.. c:macro:: VIDIOC_DELETE_BUFs
>>>> +
>>>> +``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
>>>> +
>>>> +Arguments
>>>> +=========
>>>> +
>>>> +``fd``
>>>> + File descriptor returned by :c:func:`open()`.
>>>> +
>>>> +``argp``
>>>> + Pointer to struct :c:type:`v4l2_delete_buffers`.
>>>> +
>>>> +Description
>>>> +===========
>>>> +
>>>> +Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
>>>> +delete buffers from a queue.
>>>> +
>>>> +.. c:type:: v4l2_delete_buffers
>>>> +
>>>> +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
>>>> +
>>>> +.. flat-table:: struct v4l2_delete_buffers
>>>> + :header-rows: 0
>>>> + :stub-columns: 0
>>>> + :widths: 1 1 2
>>>> +
>>>> + * - __u32
>>>> + - ``index``
>>>> + - The starting buffer index to delete.
>>>> + * - __u32
>>>> + - ``count``
>>>> + - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
>>>> + All buffers in this range must be valid and in DEQUEUED state.
>>> I wonder if this wouldn't be an inconvenience for the userspace. Would
>>> there be anything wrong with allowing ranges with holes?
>>> (Agreed about the DEQUEUED part of course.)
>>
>> For me a range as to be valid but the matter of taste.
>>
>
> @Hans Verkuil do you have an opinion?
> I could imagine that applications may want to just delete multiple
> disjoint ranges in one ioctl, which wouldn't be possible if we
> prohibit holes in the ranges.
First of all I want to state that I am mostly concentrating on patches 1-50 to get
those merged first. The actual delete_bufs patches will need more review from me.
That said, while I do not have a very strong opinion on this, I do feel it is better
to be strict about this. It can always be relaxed later. Deleting buffers is an
important operation, and userspace should know what it is doing. Deleting non-existing
buffers seems iffy to me.
Regards,
Hans
>
>>>
>>>> + In error case errno is set to ``EINVAL`` error code and index returns the index of
>>>> + the invalid buffer.
>>>> + If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
>>> Hmm, do we care about index if count is zero?
>>
>> No we don't I will change that.
>>
>>>
>>>> + * - __u32
>>>> + - ``type``
>>>> + - Type of the stream or buffers, this is the same as the struct
>>>> + :c:type:`v4l2_format` ``type`` field. See
>>>> + :c:type:`v4l2_buf_type` for valid values.
>>>> + * - __u32
>>>> + - ``reserved``\ [13]
>>>> + - A place holder for future extensions. Drivers and applications
>>>> + must set the array to zero.
>>>> +
>>>> +Return Value
>>>> +============
>>>> +
>>>> +On success 0 is returned, on error -1 and the ``errno`` variable is set
>>>> +appropriately. The generic error codes are described at the
>>>> +:ref:`Generic Error Codes <gen-errors>` chapter.
>>>> +
>>>> +EBUSY
>>>> + File I/O is in progress.
>>>> +
>>>> +EINVAL
>>>> + The buffer ``index`` doesn't exist in the queue.
>>>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>>>> index 0b3a41a45d05..14d4a49c2945 100644
>>>> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>>>> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>>>> @@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
>>>> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
>>>> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
>>>> .. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
>>>> +.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
>>>>
>>>> .. raw:: latex
>>>>
>>>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>>>> index 010a8bca0240..7068930a0ba6 100644
>>>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>>>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>>>> @@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
>>>> }
>>>> EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
>>>>
>>>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
>>>> +{
>>>> + unsigned int i, ret = 0;
>>>> +
>>>> + if (start == 0 && count == 0)
>>> I guess related to the earlier comment, but why do we care about start
>>> being zero?
>>>
>>>> + return 0;
>>>> +
>>>> + mutex_lock(&q->mmap_lock);
>>>> +
>>>> + for (i = start; i < start + count && i < q->max_num_buffers; i++) {
>>>> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
>>>> +
>>>> + if (!vb) {
>>>> + ret = -EINVAL;
>>>> + goto unlock;
>>>> + }
>>>> + if (vb->state != VB2_BUF_STATE_DEQUEUED) {
>>>> + ret = -EINVAL;
>>>> + goto unlock;
>>>> + }
>>>> + }
>>>> + __vb2_queue_free(q, start, count);
>>>> + dprintk(q, 2, "buffers deleted\n");
>>>> +
>>>> +unlock:
>>>> + mutex_unlock(&q->mmap_lock);
>>>> + return ret;
>>>> +}
>>>> +EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
>>>> +
>>>> /*
>>>> * vb2_start_streaming() - Attempt to start streaming.
>>>> * @q: videobuf2 queue
>>>> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>>>> index 56daf3b5b2ba..f003618efbc1 100644
>>>> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
>>>> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>>>> @@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
>>>> if (q->supports_requests)
>>>> *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
>>>> #endif
>>>> + if (q->supports_delete_bufs)
>>>> + *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
>>>> }
>>>>
>>>> static void validate_memory_flags(struct vb2_queue *q,
>>>> @@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
>>>> }
>>>> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
>>>>
>>>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
>>>> +{
>>>> + return vb2_core_delete_bufs(q, d->index, d->count);
>>>> +}
>>>> +EXPORT_SYMBOL_GPL(vb2_delete_bufs);
>>>> +
>>>> int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
>>>> {
>>>> unsigned requested_planes = 1;
>>>> @@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
>>>>
>>>> /* vb2 ioctl helpers */
>>>>
>>>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
>>>> + struct v4l2_delete_buffers *p)
>>>> +{
>>>> + struct video_device *vdev = video_devdata(file);
>>>> +
>>>> + if (vb2_queue_is_busy(vdev->queue, file))
>>>> + return -EBUSY;
>>>> +
>>>> + return vb2_delete_bufs(vdev->queue, p);
>>>> +}
>>>> +EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
>>>> +
>>>> int vb2_ioctl_reqbufs(struct file *file, void *priv,
>>>> struct v4l2_requestbuffers *p)
>>>> {
>>>> diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
>>>> index f81279492682..215654fd6581 100644
>>>> --- a/drivers/media/v4l2-core/v4l2-dev.c
>>>> +++ b/drivers/media/v4l2-core/v4l2-dev.c
>>>> @@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
>>>> SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
>>>> SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
>>>> SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
>>>> + SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
>>>> }
>>>>
>>>> if (is_vid || is_vbi || is_meta) {
>>>> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
>>>> index 4d90424cbfc4..e9dcf439f9f3 100644
>>>> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
>>>> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
>>>> @@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
>>>> v4l_print_format(&p->format, write_only);
>>>> }
>>>>
>>>> +static void v4l_print_delete_buffers(const void *arg, bool write_only)
>>>> +{
>>>> + const struct v4l2_delete_buffers *p = arg;
>>>> +
>>>> + pr_cont("index=%u, count=%u\n", p->index, p->count);
>>>> +}
>>>> +
>>>> static void v4l_print_streamparm(const void *arg, bool write_only)
>>>> {
>>>> const struct v4l2_streamparm *p = arg;
>>>> @@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
>>>> return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
>>>> }
>>>>
>>>> +static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
>>>> + struct file *file, void *fh, void *arg)
>>>> +{
>>>> + struct v4l2_delete_buffers *delete = arg;
>>>> + int ret = check_fmt(file, delete->type);
>>> Should we also have
>>>
>>> memset_after(delete, 0, type);
>>>
>>> here similar to how other ioctl handlers clear the reserved fields?
>>
>> I will add it.
>>
>>>
>>>> +
>>>> + return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
>>>> +}
>>>> +
>>>> static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
>>>> struct file *file, void *fh, void *arg)
>>>> {
>>>> @@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
>>>> IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
>>>> IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
>>>> IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
>>>> + IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
>>>> };
>>>> #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
>>>>
>>>> diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
>>>> index edb733f21604..55afbde54211 100644
>>>> --- a/include/media/v4l2-ioctl.h
>>>> +++ b/include/media/v4l2-ioctl.h
>>>> @@ -163,6 +163,8 @@ struct v4l2_fh;
>>>> * :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
>>>> * @vidioc_prepare_buf: pointer to the function that implements
>>>> * :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
>>>> + * @vidioc_delete_bufs: pointer to the function that implements
>>>> + * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
>>>> * @vidioc_overlay: pointer to the function that implements
>>>> * :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
>>>> * @vidioc_g_fbuf: pointer to the function that implements
>>>> @@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
>>>> struct v4l2_create_buffers *b);
>>>> int (*vidioc_prepare_buf)(struct file *file, void *fh,
>>>> struct v4l2_buffer *b);
>>>> + int (*vidioc_delete_bufs)(struct file *file, void *fh,
>>>> + struct v4l2_delete_buffers *d);
>>>>
>>>> int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
>>>> int (*vidioc_g_fbuf)(struct file *file, void *fh,
>>>> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
>>>> index 288477075a0e..db3bd986624e 100644
>>>> --- a/include/media/videobuf2-core.h
>>>> +++ b/include/media/videobuf2-core.h
>>>> @@ -507,6 +507,7 @@ struct vb2_buf_ops {
>>>> * @supports_requests: this queue supports the Request API.
>>>> * @requires_requests: this queue requires the Request API. If this is set to 1,
>>>> * then supports_requests must be set to 1 as well.
>>>> + * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
>>>> * @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
>>>> * time this is called. Set to 0 when the queue is canceled.
>>>> * If this is 1, then you cannot queue buffers from a request.
>>>> @@ -595,6 +596,7 @@ struct vb2_queue {
>>>> unsigned int quirk_poll_must_check_waiting_for_buffers:1;
>>>> unsigned int supports_requests:1;
>>>> unsigned int requires_requests:1;
>>>> + unsigned int supports_delete_bufs:1;
>>>> unsigned int uses_qbuf:1;
>>>> unsigned int uses_requests:1;
>>>> unsigned int allow_cache_hints:1;
>>>> @@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>>>> */
>>>> int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>>>>
>>>> +/**
>>>> + * vb2_core_delete_bufs() -
>>>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
>>>> + * @start: first index of the range of buffers to delete.
>>>> + * @count: number of buffers to delete.
>>>> + *
>>>> + * Return: returns zero on success; an error code otherwise.
>>>> + */
>>>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
>>>> +
>>>> /**
>>>> * vb2_core_qbuf() - Queue a buffer from userspace
>>>> *
>>>> diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
>>>> index 5a845887850b..79cea8459f52 100644
>>>> --- a/include/media/videobuf2-v4l2.h
>>>> +++ b/include/media/videobuf2-v4l2.h
>>>> @@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
>>>> */
>>>> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
>>>> struct v4l2_buffer *b);
>>>> +/**
>>>> + * vb2_delete_bufs() - Delete buffers from the queue
>>>> + *
>>>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
>>>> + * @d: delete parameter, passed from userspace to
>>>> + * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
>>>> + *
>>>> + * The return values from this function are intended to be directly returned
>>>> + * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
>>>> + */
>>>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
>>>>
>>>> /**
>>>> * vb2_qbuf() - Queue a buffer from userspace
>>>> @@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
>>>> int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
>>>> int vb2_ioctl_expbuf(struct file *file, void *priv,
>>>> struct v4l2_exportbuffer *p);
>>>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
>>>> + struct v4l2_delete_buffers *p);
>>>>
>>>> /* struct v4l2_file_operations helpers */
>>>>
>>>> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
>>>> index 13ddb5abf584..96e105149906 100644
>>>> --- a/include/uapi/linux/videodev2.h
>>>> +++ b/include/uapi/linux/videodev2.h
>>>> @@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
>>>> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
>>>> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
>>>> #define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
>>>> +#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
>>>>
>>>> /**
>>>> * struct v4l2_plane - plane info for multi-planar buffers
>>>> @@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
>>>> __u32 reserved[5];
>>>> };
>>>>
>>>> +/**
>>>> + * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
>>>> + * @index: the first buffer to be deleted
>>>> + * @count: number of buffers to delete
>>>> + * @type: enum v4l2_buf_type
>>>> + * @reserved: future extensions
>>>> + */
>>>> +struct v4l2_delete_buffers {
>>>> + __u32 index;
>>>> + __u32 count;
>>>> + __u32 type;
>>>> + __u32 reserved[13];
>>>> +};
>>>> +
>>>> /*
>>>> * I O C T L C O D E S F O R V I D E O D E V I C E S
>>>> *
>>>> @@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
>>>> #define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
>>>>
>>>> #define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
>>>> +#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
>>>> +
>>>>
>>>> /* Reminder: when adding new ioctls please add support for them to
>>>> drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
>>> Do we also need to add support for the new ioctl in there?
>>
>> It only use _u32, is aligned on cache boundary and doesn't use pointer.
>> For me 32 and 64 bits structures are identical so it doesn't need to be convert.
>> Maybe I'm wrong when testing it with pahole ?
>
> Ah, right. I double checked the compat code and indeed if an ioctl is
> not listed there, it will just use the default copy_from_user, so we
> should be good.
>
> Maybe one day we should update that comment to explain how to check if
> it's necessary to add a compat handler.
>
> Best regards,
> Tomasz
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
@ 2023-11-10 9:14 ` Hans Verkuil
0 siblings, 0 replies; 399+ messages in thread
From: Hans Verkuil @ 2023-11-10 9:14 UTC (permalink / raw)
To: Tomasz Figa, Benjamin Gaignard
Cc: mchehab, m.szyprowski, ming.qian, ezequiel, p.zabel, gregkh,
hverkuil-cisco, nicolas.dufresne, linux-media, linux-kernel,
linux-arm-kernel, linux-mediatek, linux-arm-msm, linux-rockchip,
linux-staging, kernel
On 10/11/2023 09:58, Tomasz Figa wrote:
> On Thu, Nov 9, 2023 at 7:10 PM Benjamin Gaignard
> <benjamin.gaignard@collabora.com> wrote:
>>
>>
>> Le 09/11/2023 à 10:30, Tomasz Figa a écrit :
>>> On Tue, Oct 31, 2023 at 05:31:02PM +0100, Benjamin Gaignard wrote:
>>>> VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
>>>> The number of buffers to delete in given by count field of
>>>> struct v4l2_delete_buffers and the range start at the index
>>>> specified in the same structure.
>>>>
>>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
>>>> ---
>>>> .../userspace-api/media/v4l/user-func.rst | 1 +
>>>> .../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
>>>> .../media/v4l/vidioc-reqbufs.rst | 1 +
>>>> .../media/common/videobuf2/videobuf2-core.c | 30 +++++++
>>>> .../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
>>>> drivers/media/v4l2-core/v4l2-dev.c | 1 +
>>>> drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
>>>> include/media/v4l2-ioctl.h | 4 +
>>>> include/media/videobuf2-core.h | 12 +++
>>>> include/media/videobuf2-v4l2.h | 13 +++
>>>> include/uapi/linux/videodev2.h | 17 ++++
>>>> 11 files changed, 196 insertions(+)
>>>> create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>>>>
>>>> diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
>>>> index 15ff0bf7bbe6..3fd567695477 100644
>>>> --- a/Documentation/userspace-api/media/v4l/user-func.rst
>>>> +++ b/Documentation/userspace-api/media/v4l/user-func.rst
>>>> @@ -17,6 +17,7 @@ Function Reference
>>>> vidioc-dbg-g-chip-info
>>>> vidioc-dbg-g-register
>>>> vidioc-decoder-cmd
>>>> + vidioc-delete-bufs
>>>> vidioc-dqevent
>>>> vidioc-dv-timings-cap
>>>> vidioc-encoder-cmd
>>>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>>>> new file mode 100644
>>>> index 000000000000..4791df1395d6
>>>> --- /dev/null
>>>> +++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
>>>> @@ -0,0 +1,80 @@
>>>> +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
>>>> +.. c:namespace:: V4L
>>>> +
>>>> +.. _VIDIOC_DELETE_BUFS:
>>>> +
>>>> +************************
>>>> +ioctl VIDIOC_DELETE_BUFS
>>>> +************************
>>>> +
>>>> +Name
>>>> +====
>>>> +
>>>> +VIDIOC_DELETE_BUFS - Deletes buffers from a queue
>>>> +Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
>>>> +capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
>>>> +are invoked.
>>>> +
>>>> +Synopsis
>>>> +========
>>>> +
>>>> +.. c:macro:: VIDIOC_DELETE_BUFs
>>>> +
>>>> +``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
>>>> +
>>>> +Arguments
>>>> +=========
>>>> +
>>>> +``fd``
>>>> + File descriptor returned by :c:func:`open()`.
>>>> +
>>>> +``argp``
>>>> + Pointer to struct :c:type:`v4l2_delete_buffers`.
>>>> +
>>>> +Description
>>>> +===========
>>>> +
>>>> +Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
>>>> +delete buffers from a queue.
>>>> +
>>>> +.. c:type:: v4l2_delete_buffers
>>>> +
>>>> +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
>>>> +
>>>> +.. flat-table:: struct v4l2_delete_buffers
>>>> + :header-rows: 0
>>>> + :stub-columns: 0
>>>> + :widths: 1 1 2
>>>> +
>>>> + * - __u32
>>>> + - ``index``
>>>> + - The starting buffer index to delete.
>>>> + * - __u32
>>>> + - ``count``
>>>> + - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
>>>> + All buffers in this range must be valid and in DEQUEUED state.
>>> I wonder if this wouldn't be an inconvenience for the userspace. Would
>>> there be anything wrong with allowing ranges with holes?
>>> (Agreed about the DEQUEUED part of course.)
>>
>> For me a range as to be valid but the matter of taste.
>>
>
> @Hans Verkuil do you have an opinion?
> I could imagine that applications may want to just delete multiple
> disjoint ranges in one ioctl, which wouldn't be possible if we
> prohibit holes in the ranges.
First of all I want to state that I am mostly concentrating on patches 1-50 to get
those merged first. The actual delete_bufs patches will need more review from me.
That said, while I do not have a very strong opinion on this, I do feel it is better
to be strict about this. It can always be relaxed later. Deleting buffers is an
important operation, and userspace should know what it is doing. Deleting non-existing
buffers seems iffy to me.
Regards,
Hans
>
>>>
>>>> + In error case errno is set to ``EINVAL`` error code and index returns the index of
>>>> + the invalid buffer.
>>>> + If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
>>> Hmm, do we care about index if count is zero?
>>
>> No we don't I will change that.
>>
>>>
>>>> + * - __u32
>>>> + - ``type``
>>>> + - Type of the stream or buffers, this is the same as the struct
>>>> + :c:type:`v4l2_format` ``type`` field. See
>>>> + :c:type:`v4l2_buf_type` for valid values.
>>>> + * - __u32
>>>> + - ``reserved``\ [13]
>>>> + - A place holder for future extensions. Drivers and applications
>>>> + must set the array to zero.
>>>> +
>>>> +Return Value
>>>> +============
>>>> +
>>>> +On success 0 is returned, on error -1 and the ``errno`` variable is set
>>>> +appropriately. The generic error codes are described at the
>>>> +:ref:`Generic Error Codes <gen-errors>` chapter.
>>>> +
>>>> +EBUSY
>>>> + File I/O is in progress.
>>>> +
>>>> +EINVAL
>>>> + The buffer ``index`` doesn't exist in the queue.
>>>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>>>> index 0b3a41a45d05..14d4a49c2945 100644
>>>> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>>>> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
>>>> @@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
>>>> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
>>>> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
>>>> .. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
>>>> +.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
>>>>
>>>> .. raw:: latex
>>>>
>>>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
>>>> index 010a8bca0240..7068930a0ba6 100644
>>>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
>>>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
>>>> @@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
>>>> }
>>>> EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
>>>>
>>>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
>>>> +{
>>>> + unsigned int i, ret = 0;
>>>> +
>>>> + if (start == 0 && count == 0)
>>> I guess related to the earlier comment, but why do we care about start
>>> being zero?
>>>
>>>> + return 0;
>>>> +
>>>> + mutex_lock(&q->mmap_lock);
>>>> +
>>>> + for (i = start; i < start + count && i < q->max_num_buffers; i++) {
>>>> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
>>>> +
>>>> + if (!vb) {
>>>> + ret = -EINVAL;
>>>> + goto unlock;
>>>> + }
>>>> + if (vb->state != VB2_BUF_STATE_DEQUEUED) {
>>>> + ret = -EINVAL;
>>>> + goto unlock;
>>>> + }
>>>> + }
>>>> + __vb2_queue_free(q, start, count);
>>>> + dprintk(q, 2, "buffers deleted\n");
>>>> +
>>>> +unlock:
>>>> + mutex_unlock(&q->mmap_lock);
>>>> + return ret;
>>>> +}
>>>> +EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
>>>> +
>>>> /*
>>>> * vb2_start_streaming() - Attempt to start streaming.
>>>> * @q: videobuf2 queue
>>>> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>>>> index 56daf3b5b2ba..f003618efbc1 100644
>>>> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
>>>> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
>>>> @@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
>>>> if (q->supports_requests)
>>>> *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
>>>> #endif
>>>> + if (q->supports_delete_bufs)
>>>> + *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
>>>> }
>>>>
>>>> static void validate_memory_flags(struct vb2_queue *q,
>>>> @@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
>>>> }
>>>> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
>>>>
>>>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
>>>> +{
>>>> + return vb2_core_delete_bufs(q, d->index, d->count);
>>>> +}
>>>> +EXPORT_SYMBOL_GPL(vb2_delete_bufs);
>>>> +
>>>> int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
>>>> {
>>>> unsigned requested_planes = 1;
>>>> @@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
>>>>
>>>> /* vb2 ioctl helpers */
>>>>
>>>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
>>>> + struct v4l2_delete_buffers *p)
>>>> +{
>>>> + struct video_device *vdev = video_devdata(file);
>>>> +
>>>> + if (vb2_queue_is_busy(vdev->queue, file))
>>>> + return -EBUSY;
>>>> +
>>>> + return vb2_delete_bufs(vdev->queue, p);
>>>> +}
>>>> +EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
>>>> +
>>>> int vb2_ioctl_reqbufs(struct file *file, void *priv,
>>>> struct v4l2_requestbuffers *p)
>>>> {
>>>> diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
>>>> index f81279492682..215654fd6581 100644
>>>> --- a/drivers/media/v4l2-core/v4l2-dev.c
>>>> +++ b/drivers/media/v4l2-core/v4l2-dev.c
>>>> @@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
>>>> SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
>>>> SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
>>>> SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
>>>> + SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
>>>> }
>>>>
>>>> if (is_vid || is_vbi || is_meta) {
>>>> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
>>>> index 4d90424cbfc4..e9dcf439f9f3 100644
>>>> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
>>>> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
>>>> @@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
>>>> v4l_print_format(&p->format, write_only);
>>>> }
>>>>
>>>> +static void v4l_print_delete_buffers(const void *arg, bool write_only)
>>>> +{
>>>> + const struct v4l2_delete_buffers *p = arg;
>>>> +
>>>> + pr_cont("index=%u, count=%u\n", p->index, p->count);
>>>> +}
>>>> +
>>>> static void v4l_print_streamparm(const void *arg, bool write_only)
>>>> {
>>>> const struct v4l2_streamparm *p = arg;
>>>> @@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
>>>> return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
>>>> }
>>>>
>>>> +static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
>>>> + struct file *file, void *fh, void *arg)
>>>> +{
>>>> + struct v4l2_delete_buffers *delete = arg;
>>>> + int ret = check_fmt(file, delete->type);
>>> Should we also have
>>>
>>> memset_after(delete, 0, type);
>>>
>>> here similar to how other ioctl handlers clear the reserved fields?
>>
>> I will add it.
>>
>>>
>>>> +
>>>> + return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
>>>> +}
>>>> +
>>>> static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
>>>> struct file *file, void *fh, void *arg)
>>>> {
>>>> @@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
>>>> IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
>>>> IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
>>>> IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
>>>> + IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
>>>> };
>>>> #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
>>>>
>>>> diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
>>>> index edb733f21604..55afbde54211 100644
>>>> --- a/include/media/v4l2-ioctl.h
>>>> +++ b/include/media/v4l2-ioctl.h
>>>> @@ -163,6 +163,8 @@ struct v4l2_fh;
>>>> * :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
>>>> * @vidioc_prepare_buf: pointer to the function that implements
>>>> * :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
>>>> + * @vidioc_delete_bufs: pointer to the function that implements
>>>> + * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
>>>> * @vidioc_overlay: pointer to the function that implements
>>>> * :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
>>>> * @vidioc_g_fbuf: pointer to the function that implements
>>>> @@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
>>>> struct v4l2_create_buffers *b);
>>>> int (*vidioc_prepare_buf)(struct file *file, void *fh,
>>>> struct v4l2_buffer *b);
>>>> + int (*vidioc_delete_bufs)(struct file *file, void *fh,
>>>> + struct v4l2_delete_buffers *d);
>>>>
>>>> int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
>>>> int (*vidioc_g_fbuf)(struct file *file, void *fh,
>>>> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
>>>> index 288477075a0e..db3bd986624e 100644
>>>> --- a/include/media/videobuf2-core.h
>>>> +++ b/include/media/videobuf2-core.h
>>>> @@ -507,6 +507,7 @@ struct vb2_buf_ops {
>>>> * @supports_requests: this queue supports the Request API.
>>>> * @requires_requests: this queue requires the Request API. If this is set to 1,
>>>> * then supports_requests must be set to 1 as well.
>>>> + * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
>>>> * @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
>>>> * time this is called. Set to 0 when the queue is canceled.
>>>> * If this is 1, then you cannot queue buffers from a request.
>>>> @@ -595,6 +596,7 @@ struct vb2_queue {
>>>> unsigned int quirk_poll_must_check_waiting_for_buffers:1;
>>>> unsigned int supports_requests:1;
>>>> unsigned int requires_requests:1;
>>>> + unsigned int supports_delete_bufs:1;
>>>> unsigned int uses_qbuf:1;
>>>> unsigned int uses_requests:1;
>>>> unsigned int allow_cache_hints:1;
>>>> @@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
>>>> */
>>>> int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
>>>>
>>>> +/**
>>>> + * vb2_core_delete_bufs() -
>>>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
>>>> + * @start: first index of the range of buffers to delete.
>>>> + * @count: number of buffers to delete.
>>>> + *
>>>> + * Return: returns zero on success; an error code otherwise.
>>>> + */
>>>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
>>>> +
>>>> /**
>>>> * vb2_core_qbuf() - Queue a buffer from userspace
>>>> *
>>>> diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
>>>> index 5a845887850b..79cea8459f52 100644
>>>> --- a/include/media/videobuf2-v4l2.h
>>>> +++ b/include/media/videobuf2-v4l2.h
>>>> @@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
>>>> */
>>>> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
>>>> struct v4l2_buffer *b);
>>>> +/**
>>>> + * vb2_delete_bufs() - Delete buffers from the queue
>>>> + *
>>>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
>>>> + * @d: delete parameter, passed from userspace to
>>>> + * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
>>>> + *
>>>> + * The return values from this function are intended to be directly returned
>>>> + * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
>>>> + */
>>>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
>>>>
>>>> /**
>>>> * vb2_qbuf() - Queue a buffer from userspace
>>>> @@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
>>>> int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
>>>> int vb2_ioctl_expbuf(struct file *file, void *priv,
>>>> struct v4l2_exportbuffer *p);
>>>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
>>>> + struct v4l2_delete_buffers *p);
>>>>
>>>> /* struct v4l2_file_operations helpers */
>>>>
>>>> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
>>>> index 13ddb5abf584..96e105149906 100644
>>>> --- a/include/uapi/linux/videodev2.h
>>>> +++ b/include/uapi/linux/videodev2.h
>>>> @@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
>>>> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
>>>> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
>>>> #define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
>>>> +#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
>>>>
>>>> /**
>>>> * struct v4l2_plane - plane info for multi-planar buffers
>>>> @@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
>>>> __u32 reserved[5];
>>>> };
>>>>
>>>> +/**
>>>> + * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
>>>> + * @index: the first buffer to be deleted
>>>> + * @count: number of buffers to delete
>>>> + * @type: enum v4l2_buf_type
>>>> + * @reserved: future extensions
>>>> + */
>>>> +struct v4l2_delete_buffers {
>>>> + __u32 index;
>>>> + __u32 count;
>>>> + __u32 type;
>>>> + __u32 reserved[13];
>>>> +};
>>>> +
>>>> /*
>>>> * I O C T L C O D E S F O R V I D E O D E V I C E S
>>>> *
>>>> @@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
>>>> #define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
>>>>
>>>> #define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
>>>> +#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
>>>> +
>>>>
>>>> /* Reminder: when adding new ioctls please add support for them to
>>>> drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
>>> Do we also need to add support for the new ioctl in there?
>>
>> It only use _u32, is aligned on cache boundary and doesn't use pointer.
>> For me 32 and 64 bits structures are identical so it doesn't need to be convert.
>> Maybe I'm wrong when testing it with pahole ?
>
> Ah, right. I double checked the compat code and indeed if an ioctl is
> not listed there, it will just use the default copy_from_user, so we
> should be good.
>
> Maybe one day we should update that comment to explain how to check if
> it's necessary to add a compat handler.
>
> Best regards,
> Tomasz
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
2023-11-10 9:14 ` Hans Verkuil
(?)
@ 2023-11-10 9:19 ` Tomasz Figa
-1 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-10 9:19 UTC (permalink / raw)
To: Hans Verkuil
Cc: Benjamin Gaignard, mchehab, m.szyprowski, ming.qian, ezequiel,
p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne, linux-media,
linux-kernel, linux-arm-kernel, linux-mediatek, linux-arm-msm,
linux-rockchip, linux-staging, kernel
On Fri, Nov 10, 2023 at 6:14 PM Hans Verkuil <hverkuil@xs4all.nl> wrote:
>
> On 10/11/2023 09:58, Tomasz Figa wrote:
> > On Thu, Nov 9, 2023 at 7:10 PM Benjamin Gaignard
> > <benjamin.gaignard@collabora.com> wrote:
> >>
> >>
> >> Le 09/11/2023 à 10:30, Tomasz Figa a écrit :
> >>> On Tue, Oct 31, 2023 at 05:31:02PM +0100, Benjamin Gaignard wrote:
> >>>> VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
> >>>> The number of buffers to delete in given by count field of
> >>>> struct v4l2_delete_buffers and the range start at the index
> >>>> specified in the same structure.
> >>>>
> >>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> >>>> ---
> >>>> .../userspace-api/media/v4l/user-func.rst | 1 +
> >>>> .../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
> >>>> .../media/v4l/vidioc-reqbufs.rst | 1 +
> >>>> .../media/common/videobuf2/videobuf2-core.c | 30 +++++++
> >>>> .../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
> >>>> drivers/media/v4l2-core/v4l2-dev.c | 1 +
> >>>> drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
> >>>> include/media/v4l2-ioctl.h | 4 +
> >>>> include/media/videobuf2-core.h | 12 +++
> >>>> include/media/videobuf2-v4l2.h | 13 +++
> >>>> include/uapi/linux/videodev2.h | 17 ++++
> >>>> 11 files changed, 196 insertions(+)
> >>>> create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >>>>
> >>>> diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
> >>>> index 15ff0bf7bbe6..3fd567695477 100644
> >>>> --- a/Documentation/userspace-api/media/v4l/user-func.rst
> >>>> +++ b/Documentation/userspace-api/media/v4l/user-func.rst
> >>>> @@ -17,6 +17,7 @@ Function Reference
> >>>> vidioc-dbg-g-chip-info
> >>>> vidioc-dbg-g-register
> >>>> vidioc-decoder-cmd
> >>>> + vidioc-delete-bufs
> >>>> vidioc-dqevent
> >>>> vidioc-dv-timings-cap
> >>>> vidioc-encoder-cmd
> >>>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >>>> new file mode 100644
> >>>> index 000000000000..4791df1395d6
> >>>> --- /dev/null
> >>>> +++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >>>> @@ -0,0 +1,80 @@
> >>>> +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
> >>>> +.. c:namespace:: V4L
> >>>> +
> >>>> +.. _VIDIOC_DELETE_BUFS:
> >>>> +
> >>>> +************************
> >>>> +ioctl VIDIOC_DELETE_BUFS
> >>>> +************************
> >>>> +
> >>>> +Name
> >>>> +====
> >>>> +
> >>>> +VIDIOC_DELETE_BUFS - Deletes buffers from a queue
> >>>> +Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
> >>>> +capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
> >>>> +are invoked.
> >>>> +
> >>>> +Synopsis
> >>>> +========
> >>>> +
> >>>> +.. c:macro:: VIDIOC_DELETE_BUFs
> >>>> +
> >>>> +``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
> >>>> +
> >>>> +Arguments
> >>>> +=========
> >>>> +
> >>>> +``fd``
> >>>> + File descriptor returned by :c:func:`open()`.
> >>>> +
> >>>> +``argp``
> >>>> + Pointer to struct :c:type:`v4l2_delete_buffers`.
> >>>> +
> >>>> +Description
> >>>> +===========
> >>>> +
> >>>> +Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
> >>>> +delete buffers from a queue.
> >>>> +
> >>>> +.. c:type:: v4l2_delete_buffers
> >>>> +
> >>>> +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
> >>>> +
> >>>> +.. flat-table:: struct v4l2_delete_buffers
> >>>> + :header-rows: 0
> >>>> + :stub-columns: 0
> >>>> + :widths: 1 1 2
> >>>> +
> >>>> + * - __u32
> >>>> + - ``index``
> >>>> + - The starting buffer index to delete.
> >>>> + * - __u32
> >>>> + - ``count``
> >>>> + - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
> >>>> + All buffers in this range must be valid and in DEQUEUED state.
> >>> I wonder if this wouldn't be an inconvenience for the userspace. Would
> >>> there be anything wrong with allowing ranges with holes?
> >>> (Agreed about the DEQUEUED part of course.)
> >>
> >> For me a range as to be valid but the matter of taste.
> >>
> >
> > @Hans Verkuil do you have an opinion?
> > I could imagine that applications may want to just delete multiple
> > disjoint ranges in one ioctl, which wouldn't be possible if we
> > prohibit holes in the ranges.
>
> First of all I want to state that I am mostly concentrating on patches 1-50 to get
> those merged first. The actual delete_bufs patches will need more review from me.
Makes sense. Thanks for the heads up. I did review the implementation
and it looks reasonable to me. I think the initial refactoring did a
lot of good to the code to make it much easier to implement the actual
deletion.
>
> That said, while I do not have a very strong opinion on this, I do feel it is better
> to be strict about this. It can always be relaxed later. Deleting buffers is an
> important operation, and userspace should know what it is doing. Deleting non-existing
> buffers seems iffy to me.
I don't have a strong opinion, so I guess I'm okay with that, if you
feel strongly about it. I'm just curious if there would be any
practical issue with it. After all, even if we disallow holes in the
deleted range, there are still many ways the userspace can be buggy
about it, e.g. by deleting buffers belonging to two adjacent ranges.
(On the other hand, the less ways to make mistakes, the better, I
guess...)
>
> Regards,
>
> Hans
>
> >
> >>>
> >>>> + In error case errno is set to ``EINVAL`` error code and index returns the index of
> >>>> + the invalid buffer.
> >>>> + If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
> >>> Hmm, do we care about index if count is zero?
> >>
> >> No we don't I will change that.
> >>
> >>>
> >>>> + * - __u32
> >>>> + - ``type``
> >>>> + - Type of the stream or buffers, this is the same as the struct
> >>>> + :c:type:`v4l2_format` ``type`` field. See
> >>>> + :c:type:`v4l2_buf_type` for valid values.
> >>>> + * - __u32
> >>>> + - ``reserved``\ [13]
> >>>> + - A place holder for future extensions. Drivers and applications
> >>>> + must set the array to zero.
> >>>> +
> >>>> +Return Value
> >>>> +============
> >>>> +
> >>>> +On success 0 is returned, on error -1 and the ``errno`` variable is set
> >>>> +appropriately. The generic error codes are described at the
> >>>> +:ref:`Generic Error Codes <gen-errors>` chapter.
> >>>> +
> >>>> +EBUSY
> >>>> + File I/O is in progress.
> >>>> +
> >>>> +EINVAL
> >>>> + The buffer ``index`` doesn't exist in the queue.
> >>>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >>>> index 0b3a41a45d05..14d4a49c2945 100644
> >>>> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >>>> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >>>> @@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
> >>>> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
> >>>> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
> >>>> .. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
> >>>> +.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
> >>>>
> >>>> .. raw:: latex
> >>>>
> >>>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> >>>> index 010a8bca0240..7068930a0ba6 100644
> >>>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> >>>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> >>>> @@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> >>>> }
> >>>> EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
> >>>>
> >>>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
> >>>> +{
> >>>> + unsigned int i, ret = 0;
> >>>> +
> >>>> + if (start == 0 && count == 0)
> >>> I guess related to the earlier comment, but why do we care about start
> >>> being zero?
> >>>
> >>>> + return 0;
> >>>> +
> >>>> + mutex_lock(&q->mmap_lock);
> >>>> +
> >>>> + for (i = start; i < start + count && i < q->max_num_buffers; i++) {
> >>>> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
> >>>> +
> >>>> + if (!vb) {
> >>>> + ret = -EINVAL;
> >>>> + goto unlock;
> >>>> + }
> >>>> + if (vb->state != VB2_BUF_STATE_DEQUEUED) {
> >>>> + ret = -EINVAL;
> >>>> + goto unlock;
> >>>> + }
> >>>> + }
> >>>> + __vb2_queue_free(q, start, count);
> >>>> + dprintk(q, 2, "buffers deleted\n");
> >>>> +
> >>>> +unlock:
> >>>> + mutex_unlock(&q->mmap_lock);
> >>>> + return ret;
> >>>> +}
> >>>> +EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
> >>>> +
> >>>> /*
> >>>> * vb2_start_streaming() - Attempt to start streaming.
> >>>> * @q: videobuf2 queue
> >>>> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >>>> index 56daf3b5b2ba..f003618efbc1 100644
> >>>> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >>>> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >>>> @@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
> >>>> if (q->supports_requests)
> >>>> *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
> >>>> #endif
> >>>> + if (q->supports_delete_bufs)
> >>>> + *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
> >>>> }
> >>>>
> >>>> static void validate_memory_flags(struct vb2_queue *q,
> >>>> @@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> >>>> }
> >>>> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
> >>>>
> >>>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
> >>>> +{
> >>>> + return vb2_core_delete_bufs(q, d->index, d->count);
> >>>> +}
> >>>> +EXPORT_SYMBOL_GPL(vb2_delete_bufs);
> >>>> +
> >>>> int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
> >>>> {
> >>>> unsigned requested_planes = 1;
> >>>> @@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
> >>>>
> >>>> /* vb2 ioctl helpers */
> >>>>
> >>>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> >>>> + struct v4l2_delete_buffers *p)
> >>>> +{
> >>>> + struct video_device *vdev = video_devdata(file);
> >>>> +
> >>>> + if (vb2_queue_is_busy(vdev->queue, file))
> >>>> + return -EBUSY;
> >>>> +
> >>>> + return vb2_delete_bufs(vdev->queue, p);
> >>>> +}
> >>>> +EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
> >>>> +
> >>>> int vb2_ioctl_reqbufs(struct file *file, void *priv,
> >>>> struct v4l2_requestbuffers *p)
> >>>> {
> >>>> diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
> >>>> index f81279492682..215654fd6581 100644
> >>>> --- a/drivers/media/v4l2-core/v4l2-dev.c
> >>>> +++ b/drivers/media/v4l2-core/v4l2-dev.c
> >>>> @@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
> >>>> SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
> >>>> SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
> >>>> SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
> >>>> + SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
> >>>> }
> >>>>
> >>>> if (is_vid || is_vbi || is_meta) {
> >>>> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
> >>>> index 4d90424cbfc4..e9dcf439f9f3 100644
> >>>> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> >>>> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> >>>> @@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
> >>>> v4l_print_format(&p->format, write_only);
> >>>> }
> >>>>
> >>>> +static void v4l_print_delete_buffers(const void *arg, bool write_only)
> >>>> +{
> >>>> + const struct v4l2_delete_buffers *p = arg;
> >>>> +
> >>>> + pr_cont("index=%u, count=%u\n", p->index, p->count);
> >>>> +}
> >>>> +
> >>>> static void v4l_print_streamparm(const void *arg, bool write_only)
> >>>> {
> >>>> const struct v4l2_streamparm *p = arg;
> >>>> @@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
> >>>> return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
> >>>> }
> >>>>
> >>>> +static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
> >>>> + struct file *file, void *fh, void *arg)
> >>>> +{
> >>>> + struct v4l2_delete_buffers *delete = arg;
> >>>> + int ret = check_fmt(file, delete->type);
> >>> Should we also have
> >>>
> >>> memset_after(delete, 0, type);
> >>>
> >>> here similar to how other ioctl handlers clear the reserved fields?
> >>
> >> I will add it.
> >>
> >>>
> >>>> +
> >>>> + return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
> >>>> +}
> >>>> +
> >>>> static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
> >>>> struct file *file, void *fh, void *arg)
> >>>> {
> >>>> @@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
> >>>> IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
> >>>> IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
> >>>> IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
> >>>> + IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
> >>>> };
> >>>> #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
> >>>>
> >>>> diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
> >>>> index edb733f21604..55afbde54211 100644
> >>>> --- a/include/media/v4l2-ioctl.h
> >>>> +++ b/include/media/v4l2-ioctl.h
> >>>> @@ -163,6 +163,8 @@ struct v4l2_fh;
> >>>> * :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
> >>>> * @vidioc_prepare_buf: pointer to the function that implements
> >>>> * :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
> >>>> + * @vidioc_delete_bufs: pointer to the function that implements
> >>>> + * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
> >>>> * @vidioc_overlay: pointer to the function that implements
> >>>> * :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
> >>>> * @vidioc_g_fbuf: pointer to the function that implements
> >>>> @@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
> >>>> struct v4l2_create_buffers *b);
> >>>> int (*vidioc_prepare_buf)(struct file *file, void *fh,
> >>>> struct v4l2_buffer *b);
> >>>> + int (*vidioc_delete_bufs)(struct file *file, void *fh,
> >>>> + struct v4l2_delete_buffers *d);
> >>>>
> >>>> int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
> >>>> int (*vidioc_g_fbuf)(struct file *file, void *fh,
> >>>> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> >>>> index 288477075a0e..db3bd986624e 100644
> >>>> --- a/include/media/videobuf2-core.h
> >>>> +++ b/include/media/videobuf2-core.h
> >>>> @@ -507,6 +507,7 @@ struct vb2_buf_ops {
> >>>> * @supports_requests: this queue supports the Request API.
> >>>> * @requires_requests: this queue requires the Request API. If this is set to 1,
> >>>> * then supports_requests must be set to 1 as well.
> >>>> + * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
> >>>> * @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
> >>>> * time this is called. Set to 0 when the queue is canceled.
> >>>> * If this is 1, then you cannot queue buffers from a request.
> >>>> @@ -595,6 +596,7 @@ struct vb2_queue {
> >>>> unsigned int quirk_poll_must_check_waiting_for_buffers:1;
> >>>> unsigned int supports_requests:1;
> >>>> unsigned int requires_requests:1;
> >>>> + unsigned int supports_delete_bufs:1;
> >>>> unsigned int uses_qbuf:1;
> >>>> unsigned int uses_requests:1;
> >>>> unsigned int allow_cache_hints:1;
> >>>> @@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> >>>> */
> >>>> int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
> >>>>
> >>>> +/**
> >>>> + * vb2_core_delete_bufs() -
> >>>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> >>>> + * @start: first index of the range of buffers to delete.
> >>>> + * @count: number of buffers to delete.
> >>>> + *
> >>>> + * Return: returns zero on success; an error code otherwise.
> >>>> + */
> >>>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
> >>>> +
> >>>> /**
> >>>> * vb2_core_qbuf() - Queue a buffer from userspace
> >>>> *
> >>>> diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
> >>>> index 5a845887850b..79cea8459f52 100644
> >>>> --- a/include/media/videobuf2-v4l2.h
> >>>> +++ b/include/media/videobuf2-v4l2.h
> >>>> @@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
> >>>> */
> >>>> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> >>>> struct v4l2_buffer *b);
> >>>> +/**
> >>>> + * vb2_delete_bufs() - Delete buffers from the queue
> >>>> + *
> >>>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> >>>> + * @d: delete parameter, passed from userspace to
> >>>> + * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
> >>>> + *
> >>>> + * The return values from this function are intended to be directly returned
> >>>> + * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
> >>>> + */
> >>>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
> >>>>
> >>>> /**
> >>>> * vb2_qbuf() - Queue a buffer from userspace
> >>>> @@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
> >>>> int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
> >>>> int vb2_ioctl_expbuf(struct file *file, void *priv,
> >>>> struct v4l2_exportbuffer *p);
> >>>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> >>>> + struct v4l2_delete_buffers *p);
> >>>>
> >>>> /* struct v4l2_file_operations helpers */
> >>>>
> >>>> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> >>>> index 13ddb5abf584..96e105149906 100644
> >>>> --- a/include/uapi/linux/videodev2.h
> >>>> +++ b/include/uapi/linux/videodev2.h
> >>>> @@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
> >>>> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
> >>>> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
> >>>> #define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
> >>>> +#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
> >>>>
> >>>> /**
> >>>> * struct v4l2_plane - plane info for multi-planar buffers
> >>>> @@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
> >>>> __u32 reserved[5];
> >>>> };
> >>>>
> >>>> +/**
> >>>> + * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
> >>>> + * @index: the first buffer to be deleted
> >>>> + * @count: number of buffers to delete
> >>>> + * @type: enum v4l2_buf_type
> >>>> + * @reserved: future extensions
> >>>> + */
> >>>> +struct v4l2_delete_buffers {
> >>>> + __u32 index;
> >>>> + __u32 count;
> >>>> + __u32 type;
> >>>> + __u32 reserved[13];
> >>>> +};
> >>>> +
> >>>> /*
> >>>> * I O C T L C O D E S F O R V I D E O D E V I C E S
> >>>> *
> >>>> @@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
> >>>> #define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
> >>>>
> >>>> #define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
> >>>> +#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
> >>>> +
> >>>>
> >>>> /* Reminder: when adding new ioctls please add support for them to
> >>>> drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
> >>> Do we also need to add support for the new ioctl in there?
> >>
> >> It only use _u32, is aligned on cache boundary and doesn't use pointer.
> >> For me 32 and 64 bits structures are identical so it doesn't need to be convert.
> >> Maybe I'm wrong when testing it with pahole ?
> >
> > Ah, right. I double checked the compat code and indeed if an ioctl is
> > not listed there, it will just use the default copy_from_user, so we
> > should be good.
> >
> > Maybe one day we should update that comment to explain how to check if
> > it's necessary to add a compat handler.
> >
> > Best regards,
> > Tomasz
>
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
@ 2023-11-10 9:19 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-10 9:19 UTC (permalink / raw)
To: Hans Verkuil
Cc: Benjamin Gaignard, mchehab, m.szyprowski, ming.qian, ezequiel,
p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne, linux-media,
linux-kernel, linux-arm-kernel, linux-mediatek, linux-arm-msm,
linux-rockchip, linux-staging, kernel
On Fri, Nov 10, 2023 at 6:14 PM Hans Verkuil <hverkuil@xs4all.nl> wrote:
>
> On 10/11/2023 09:58, Tomasz Figa wrote:
> > On Thu, Nov 9, 2023 at 7:10 PM Benjamin Gaignard
> > <benjamin.gaignard@collabora.com> wrote:
> >>
> >>
> >> Le 09/11/2023 à 10:30, Tomasz Figa a écrit :
> >>> On Tue, Oct 31, 2023 at 05:31:02PM +0100, Benjamin Gaignard wrote:
> >>>> VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
> >>>> The number of buffers to delete in given by count field of
> >>>> struct v4l2_delete_buffers and the range start at the index
> >>>> specified in the same structure.
> >>>>
> >>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> >>>> ---
> >>>> .../userspace-api/media/v4l/user-func.rst | 1 +
> >>>> .../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
> >>>> .../media/v4l/vidioc-reqbufs.rst | 1 +
> >>>> .../media/common/videobuf2/videobuf2-core.c | 30 +++++++
> >>>> .../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
> >>>> drivers/media/v4l2-core/v4l2-dev.c | 1 +
> >>>> drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
> >>>> include/media/v4l2-ioctl.h | 4 +
> >>>> include/media/videobuf2-core.h | 12 +++
> >>>> include/media/videobuf2-v4l2.h | 13 +++
> >>>> include/uapi/linux/videodev2.h | 17 ++++
> >>>> 11 files changed, 196 insertions(+)
> >>>> create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >>>>
> >>>> diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
> >>>> index 15ff0bf7bbe6..3fd567695477 100644
> >>>> --- a/Documentation/userspace-api/media/v4l/user-func.rst
> >>>> +++ b/Documentation/userspace-api/media/v4l/user-func.rst
> >>>> @@ -17,6 +17,7 @@ Function Reference
> >>>> vidioc-dbg-g-chip-info
> >>>> vidioc-dbg-g-register
> >>>> vidioc-decoder-cmd
> >>>> + vidioc-delete-bufs
> >>>> vidioc-dqevent
> >>>> vidioc-dv-timings-cap
> >>>> vidioc-encoder-cmd
> >>>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >>>> new file mode 100644
> >>>> index 000000000000..4791df1395d6
> >>>> --- /dev/null
> >>>> +++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >>>> @@ -0,0 +1,80 @@
> >>>> +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
> >>>> +.. c:namespace:: V4L
> >>>> +
> >>>> +.. _VIDIOC_DELETE_BUFS:
> >>>> +
> >>>> +************************
> >>>> +ioctl VIDIOC_DELETE_BUFS
> >>>> +************************
> >>>> +
> >>>> +Name
> >>>> +====
> >>>> +
> >>>> +VIDIOC_DELETE_BUFS - Deletes buffers from a queue
> >>>> +Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
> >>>> +capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
> >>>> +are invoked.
> >>>> +
> >>>> +Synopsis
> >>>> +========
> >>>> +
> >>>> +.. c:macro:: VIDIOC_DELETE_BUFs
> >>>> +
> >>>> +``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
> >>>> +
> >>>> +Arguments
> >>>> +=========
> >>>> +
> >>>> +``fd``
> >>>> + File descriptor returned by :c:func:`open()`.
> >>>> +
> >>>> +``argp``
> >>>> + Pointer to struct :c:type:`v4l2_delete_buffers`.
> >>>> +
> >>>> +Description
> >>>> +===========
> >>>> +
> >>>> +Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
> >>>> +delete buffers from a queue.
> >>>> +
> >>>> +.. c:type:: v4l2_delete_buffers
> >>>> +
> >>>> +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
> >>>> +
> >>>> +.. flat-table:: struct v4l2_delete_buffers
> >>>> + :header-rows: 0
> >>>> + :stub-columns: 0
> >>>> + :widths: 1 1 2
> >>>> +
> >>>> + * - __u32
> >>>> + - ``index``
> >>>> + - The starting buffer index to delete.
> >>>> + * - __u32
> >>>> + - ``count``
> >>>> + - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
> >>>> + All buffers in this range must be valid and in DEQUEUED state.
> >>> I wonder if this wouldn't be an inconvenience for the userspace. Would
> >>> there be anything wrong with allowing ranges with holes?
> >>> (Agreed about the DEQUEUED part of course.)
> >>
> >> For me a range as to be valid but the matter of taste.
> >>
> >
> > @Hans Verkuil do you have an opinion?
> > I could imagine that applications may want to just delete multiple
> > disjoint ranges in one ioctl, which wouldn't be possible if we
> > prohibit holes in the ranges.
>
> First of all I want to state that I am mostly concentrating on patches 1-50 to get
> those merged first. The actual delete_bufs patches will need more review from me.
Makes sense. Thanks for the heads up. I did review the implementation
and it looks reasonable to me. I think the initial refactoring did a
lot of good to the code to make it much easier to implement the actual
deletion.
>
> That said, while I do not have a very strong opinion on this, I do feel it is better
> to be strict about this. It can always be relaxed later. Deleting buffers is an
> important operation, and userspace should know what it is doing. Deleting non-existing
> buffers seems iffy to me.
I don't have a strong opinion, so I guess I'm okay with that, if you
feel strongly about it. I'm just curious if there would be any
practical issue with it. After all, even if we disallow holes in the
deleted range, there are still many ways the userspace can be buggy
about it, e.g. by deleting buffers belonging to two adjacent ranges.
(On the other hand, the less ways to make mistakes, the better, I
guess...)
>
> Regards,
>
> Hans
>
> >
> >>>
> >>>> + In error case errno is set to ``EINVAL`` error code and index returns the index of
> >>>> + the invalid buffer.
> >>>> + If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
> >>> Hmm, do we care about index if count is zero?
> >>
> >> No we don't I will change that.
> >>
> >>>
> >>>> + * - __u32
> >>>> + - ``type``
> >>>> + - Type of the stream or buffers, this is the same as the struct
> >>>> + :c:type:`v4l2_format` ``type`` field. See
> >>>> + :c:type:`v4l2_buf_type` for valid values.
> >>>> + * - __u32
> >>>> + - ``reserved``\ [13]
> >>>> + - A place holder for future extensions. Drivers and applications
> >>>> + must set the array to zero.
> >>>> +
> >>>> +Return Value
> >>>> +============
> >>>> +
> >>>> +On success 0 is returned, on error -1 and the ``errno`` variable is set
> >>>> +appropriately. The generic error codes are described at the
> >>>> +:ref:`Generic Error Codes <gen-errors>` chapter.
> >>>> +
> >>>> +EBUSY
> >>>> + File I/O is in progress.
> >>>> +
> >>>> +EINVAL
> >>>> + The buffer ``index`` doesn't exist in the queue.
> >>>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >>>> index 0b3a41a45d05..14d4a49c2945 100644
> >>>> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >>>> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >>>> @@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
> >>>> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
> >>>> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
> >>>> .. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
> >>>> +.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
> >>>>
> >>>> .. raw:: latex
> >>>>
> >>>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> >>>> index 010a8bca0240..7068930a0ba6 100644
> >>>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> >>>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> >>>> @@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> >>>> }
> >>>> EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
> >>>>
> >>>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
> >>>> +{
> >>>> + unsigned int i, ret = 0;
> >>>> +
> >>>> + if (start == 0 && count == 0)
> >>> I guess related to the earlier comment, but why do we care about start
> >>> being zero?
> >>>
> >>>> + return 0;
> >>>> +
> >>>> + mutex_lock(&q->mmap_lock);
> >>>> +
> >>>> + for (i = start; i < start + count && i < q->max_num_buffers; i++) {
> >>>> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
> >>>> +
> >>>> + if (!vb) {
> >>>> + ret = -EINVAL;
> >>>> + goto unlock;
> >>>> + }
> >>>> + if (vb->state != VB2_BUF_STATE_DEQUEUED) {
> >>>> + ret = -EINVAL;
> >>>> + goto unlock;
> >>>> + }
> >>>> + }
> >>>> + __vb2_queue_free(q, start, count);
> >>>> + dprintk(q, 2, "buffers deleted\n");
> >>>> +
> >>>> +unlock:
> >>>> + mutex_unlock(&q->mmap_lock);
> >>>> + return ret;
> >>>> +}
> >>>> +EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
> >>>> +
> >>>> /*
> >>>> * vb2_start_streaming() - Attempt to start streaming.
> >>>> * @q: videobuf2 queue
> >>>> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >>>> index 56daf3b5b2ba..f003618efbc1 100644
> >>>> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >>>> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >>>> @@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
> >>>> if (q->supports_requests)
> >>>> *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
> >>>> #endif
> >>>> + if (q->supports_delete_bufs)
> >>>> + *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
> >>>> }
> >>>>
> >>>> static void validate_memory_flags(struct vb2_queue *q,
> >>>> @@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> >>>> }
> >>>> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
> >>>>
> >>>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
> >>>> +{
> >>>> + return vb2_core_delete_bufs(q, d->index, d->count);
> >>>> +}
> >>>> +EXPORT_SYMBOL_GPL(vb2_delete_bufs);
> >>>> +
> >>>> int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
> >>>> {
> >>>> unsigned requested_planes = 1;
> >>>> @@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
> >>>>
> >>>> /* vb2 ioctl helpers */
> >>>>
> >>>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> >>>> + struct v4l2_delete_buffers *p)
> >>>> +{
> >>>> + struct video_device *vdev = video_devdata(file);
> >>>> +
> >>>> + if (vb2_queue_is_busy(vdev->queue, file))
> >>>> + return -EBUSY;
> >>>> +
> >>>> + return vb2_delete_bufs(vdev->queue, p);
> >>>> +}
> >>>> +EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
> >>>> +
> >>>> int vb2_ioctl_reqbufs(struct file *file, void *priv,
> >>>> struct v4l2_requestbuffers *p)
> >>>> {
> >>>> diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
> >>>> index f81279492682..215654fd6581 100644
> >>>> --- a/drivers/media/v4l2-core/v4l2-dev.c
> >>>> +++ b/drivers/media/v4l2-core/v4l2-dev.c
> >>>> @@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
> >>>> SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
> >>>> SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
> >>>> SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
> >>>> + SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
> >>>> }
> >>>>
> >>>> if (is_vid || is_vbi || is_meta) {
> >>>> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
> >>>> index 4d90424cbfc4..e9dcf439f9f3 100644
> >>>> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> >>>> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> >>>> @@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
> >>>> v4l_print_format(&p->format, write_only);
> >>>> }
> >>>>
> >>>> +static void v4l_print_delete_buffers(const void *arg, bool write_only)
> >>>> +{
> >>>> + const struct v4l2_delete_buffers *p = arg;
> >>>> +
> >>>> + pr_cont("index=%u, count=%u\n", p->index, p->count);
> >>>> +}
> >>>> +
> >>>> static void v4l_print_streamparm(const void *arg, bool write_only)
> >>>> {
> >>>> const struct v4l2_streamparm *p = arg;
> >>>> @@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
> >>>> return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
> >>>> }
> >>>>
> >>>> +static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
> >>>> + struct file *file, void *fh, void *arg)
> >>>> +{
> >>>> + struct v4l2_delete_buffers *delete = arg;
> >>>> + int ret = check_fmt(file, delete->type);
> >>> Should we also have
> >>>
> >>> memset_after(delete, 0, type);
> >>>
> >>> here similar to how other ioctl handlers clear the reserved fields?
> >>
> >> I will add it.
> >>
> >>>
> >>>> +
> >>>> + return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
> >>>> +}
> >>>> +
> >>>> static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
> >>>> struct file *file, void *fh, void *arg)
> >>>> {
> >>>> @@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
> >>>> IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
> >>>> IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
> >>>> IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
> >>>> + IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
> >>>> };
> >>>> #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
> >>>>
> >>>> diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
> >>>> index edb733f21604..55afbde54211 100644
> >>>> --- a/include/media/v4l2-ioctl.h
> >>>> +++ b/include/media/v4l2-ioctl.h
> >>>> @@ -163,6 +163,8 @@ struct v4l2_fh;
> >>>> * :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
> >>>> * @vidioc_prepare_buf: pointer to the function that implements
> >>>> * :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
> >>>> + * @vidioc_delete_bufs: pointer to the function that implements
> >>>> + * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
> >>>> * @vidioc_overlay: pointer to the function that implements
> >>>> * :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
> >>>> * @vidioc_g_fbuf: pointer to the function that implements
> >>>> @@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
> >>>> struct v4l2_create_buffers *b);
> >>>> int (*vidioc_prepare_buf)(struct file *file, void *fh,
> >>>> struct v4l2_buffer *b);
> >>>> + int (*vidioc_delete_bufs)(struct file *file, void *fh,
> >>>> + struct v4l2_delete_buffers *d);
> >>>>
> >>>> int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
> >>>> int (*vidioc_g_fbuf)(struct file *file, void *fh,
> >>>> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> >>>> index 288477075a0e..db3bd986624e 100644
> >>>> --- a/include/media/videobuf2-core.h
> >>>> +++ b/include/media/videobuf2-core.h
> >>>> @@ -507,6 +507,7 @@ struct vb2_buf_ops {
> >>>> * @supports_requests: this queue supports the Request API.
> >>>> * @requires_requests: this queue requires the Request API. If this is set to 1,
> >>>> * then supports_requests must be set to 1 as well.
> >>>> + * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
> >>>> * @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
> >>>> * time this is called. Set to 0 when the queue is canceled.
> >>>> * If this is 1, then you cannot queue buffers from a request.
> >>>> @@ -595,6 +596,7 @@ struct vb2_queue {
> >>>> unsigned int quirk_poll_must_check_waiting_for_buffers:1;
> >>>> unsigned int supports_requests:1;
> >>>> unsigned int requires_requests:1;
> >>>> + unsigned int supports_delete_bufs:1;
> >>>> unsigned int uses_qbuf:1;
> >>>> unsigned int uses_requests:1;
> >>>> unsigned int allow_cache_hints:1;
> >>>> @@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> >>>> */
> >>>> int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
> >>>>
> >>>> +/**
> >>>> + * vb2_core_delete_bufs() -
> >>>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> >>>> + * @start: first index of the range of buffers to delete.
> >>>> + * @count: number of buffers to delete.
> >>>> + *
> >>>> + * Return: returns zero on success; an error code otherwise.
> >>>> + */
> >>>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
> >>>> +
> >>>> /**
> >>>> * vb2_core_qbuf() - Queue a buffer from userspace
> >>>> *
> >>>> diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
> >>>> index 5a845887850b..79cea8459f52 100644
> >>>> --- a/include/media/videobuf2-v4l2.h
> >>>> +++ b/include/media/videobuf2-v4l2.h
> >>>> @@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
> >>>> */
> >>>> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> >>>> struct v4l2_buffer *b);
> >>>> +/**
> >>>> + * vb2_delete_bufs() - Delete buffers from the queue
> >>>> + *
> >>>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> >>>> + * @d: delete parameter, passed from userspace to
> >>>> + * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
> >>>> + *
> >>>> + * The return values from this function are intended to be directly returned
> >>>> + * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
> >>>> + */
> >>>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
> >>>>
> >>>> /**
> >>>> * vb2_qbuf() - Queue a buffer from userspace
> >>>> @@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
> >>>> int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
> >>>> int vb2_ioctl_expbuf(struct file *file, void *priv,
> >>>> struct v4l2_exportbuffer *p);
> >>>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> >>>> + struct v4l2_delete_buffers *p);
> >>>>
> >>>> /* struct v4l2_file_operations helpers */
> >>>>
> >>>> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> >>>> index 13ddb5abf584..96e105149906 100644
> >>>> --- a/include/uapi/linux/videodev2.h
> >>>> +++ b/include/uapi/linux/videodev2.h
> >>>> @@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
> >>>> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
> >>>> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
> >>>> #define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
> >>>> +#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
> >>>>
> >>>> /**
> >>>> * struct v4l2_plane - plane info for multi-planar buffers
> >>>> @@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
> >>>> __u32 reserved[5];
> >>>> };
> >>>>
> >>>> +/**
> >>>> + * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
> >>>> + * @index: the first buffer to be deleted
> >>>> + * @count: number of buffers to delete
> >>>> + * @type: enum v4l2_buf_type
> >>>> + * @reserved: future extensions
> >>>> + */
> >>>> +struct v4l2_delete_buffers {
> >>>> + __u32 index;
> >>>> + __u32 count;
> >>>> + __u32 type;
> >>>> + __u32 reserved[13];
> >>>> +};
> >>>> +
> >>>> /*
> >>>> * I O C T L C O D E S F O R V I D E O D E V I C E S
> >>>> *
> >>>> @@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
> >>>> #define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
> >>>>
> >>>> #define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
> >>>> +#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
> >>>> +
> >>>>
> >>>> /* Reminder: when adding new ioctls please add support for them to
> >>>> drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
> >>> Do we also need to add support for the new ioctl in there?
> >>
> >> It only use _u32, is aligned on cache boundary and doesn't use pointer.
> >> For me 32 and 64 bits structures are identical so it doesn't need to be convert.
> >> Maybe I'm wrong when testing it with pahole ?
> >
> > Ah, right. I double checked the compat code and indeed if an ioctl is
> > not listed there, it will just use the default copy_from_user, so we
> > should be good.
> >
> > Maybe one day we should update that comment to explain how to check if
> > it's necessary to add a compat handler.
> >
> > Best regards,
> > Tomasz
>
_______________________________________________
Linux-rockchip mailing list
Linux-rockchip@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-rockchip
^ permalink raw reply [flat|nested] 399+ messages in thread
* Re: [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl
@ 2023-11-10 9:19 ` Tomasz Figa
0 siblings, 0 replies; 399+ messages in thread
From: Tomasz Figa @ 2023-11-10 9:19 UTC (permalink / raw)
To: Hans Verkuil
Cc: Benjamin Gaignard, mchehab, m.szyprowski, ming.qian, ezequiel,
p.zabel, gregkh, hverkuil-cisco, nicolas.dufresne, linux-media,
linux-kernel, linux-arm-kernel, linux-mediatek, linux-arm-msm,
linux-rockchip, linux-staging, kernel
On Fri, Nov 10, 2023 at 6:14 PM Hans Verkuil <hverkuil@xs4all.nl> wrote:
>
> On 10/11/2023 09:58, Tomasz Figa wrote:
> > On Thu, Nov 9, 2023 at 7:10 PM Benjamin Gaignard
> > <benjamin.gaignard@collabora.com> wrote:
> >>
> >>
> >> Le 09/11/2023 à 10:30, Tomasz Figa a écrit :
> >>> On Tue, Oct 31, 2023 at 05:31:02PM +0100, Benjamin Gaignard wrote:
> >>>> VIDIOC_DELETE_BUFS ioctl allows to delete buffers from a queue.
> >>>> The number of buffers to delete in given by count field of
> >>>> struct v4l2_delete_buffers and the range start at the index
> >>>> specified in the same structure.
> >>>>
> >>>> Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
> >>>> ---
> >>>> .../userspace-api/media/v4l/user-func.rst | 1 +
> >>>> .../media/v4l/vidioc-delete-bufs.rst | 80 +++++++++++++++++++
> >>>> .../media/v4l/vidioc-reqbufs.rst | 1 +
> >>>> .../media/common/videobuf2/videobuf2-core.c | 30 +++++++
> >>>> .../media/common/videobuf2/videobuf2-v4l2.c | 20 +++++
> >>>> drivers/media/v4l2-core/v4l2-dev.c | 1 +
> >>>> drivers/media/v4l2-core/v4l2-ioctl.c | 17 ++++
> >>>> include/media/v4l2-ioctl.h | 4 +
> >>>> include/media/videobuf2-core.h | 12 +++
> >>>> include/media/videobuf2-v4l2.h | 13 +++
> >>>> include/uapi/linux/videodev2.h | 17 ++++
> >>>> 11 files changed, 196 insertions(+)
> >>>> create mode 100644 Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >>>>
> >>>> diff --git a/Documentation/userspace-api/media/v4l/user-func.rst b/Documentation/userspace-api/media/v4l/user-func.rst
> >>>> index 15ff0bf7bbe6..3fd567695477 100644
> >>>> --- a/Documentation/userspace-api/media/v4l/user-func.rst
> >>>> +++ b/Documentation/userspace-api/media/v4l/user-func.rst
> >>>> @@ -17,6 +17,7 @@ Function Reference
> >>>> vidioc-dbg-g-chip-info
> >>>> vidioc-dbg-g-register
> >>>> vidioc-decoder-cmd
> >>>> + vidioc-delete-bufs
> >>>> vidioc-dqevent
> >>>> vidioc-dv-timings-cap
> >>>> vidioc-encoder-cmd
> >>>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >>>> new file mode 100644
> >>>> index 000000000000..4791df1395d6
> >>>> --- /dev/null
> >>>> +++ b/Documentation/userspace-api/media/v4l/vidioc-delete-bufs.rst
> >>>> @@ -0,0 +1,80 @@
> >>>> +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
> >>>> +.. c:namespace:: V4L
> >>>> +
> >>>> +.. _VIDIOC_DELETE_BUFS:
> >>>> +
> >>>> +************************
> >>>> +ioctl VIDIOC_DELETE_BUFS
> >>>> +************************
> >>>> +
> >>>> +Name
> >>>> +====
> >>>> +
> >>>> +VIDIOC_DELETE_BUFS - Deletes buffers from a queue
> >>>> +Drivers using this feature must expose the ``V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS``
> >>>> +capability on the queue :c:func:`VIDIOC_REQBUFS` or :c:func:`VIDIOC_CREATE_BUFS`
> >>>> +are invoked.
> >>>> +
> >>>> +Synopsis
> >>>> +========
> >>>> +
> >>>> +.. c:macro:: VIDIOC_DELETE_BUFs
> >>>> +
> >>>> +``int ioctl(int fd, VIDIOC_DELETE_BUFs, struct v4l2_delete_buffers *argp)``
> >>>> +
> >>>> +Arguments
> >>>> +=========
> >>>> +
> >>>> +``fd``
> >>>> + File descriptor returned by :c:func:`open()`.
> >>>> +
> >>>> +``argp``
> >>>> + Pointer to struct :c:type:`v4l2_delete_buffers`.
> >>>> +
> >>>> +Description
> >>>> +===========
> >>>> +
> >>>> +Applications can optionally call the :ref:`VIDIOC_DELETE_BUFS` ioctl to
> >>>> +delete buffers from a queue.
> >>>> +
> >>>> +.. c:type:: v4l2_delete_buffers
> >>>> +
> >>>> +.. tabularcolumns:: |p{4.4cm}|p{4.4cm}|p{8.5cm}|
> >>>> +
> >>>> +.. flat-table:: struct v4l2_delete_buffers
> >>>> + :header-rows: 0
> >>>> + :stub-columns: 0
> >>>> + :widths: 1 1 2
> >>>> +
> >>>> + * - __u32
> >>>> + - ``index``
> >>>> + - The starting buffer index to delete.
> >>>> + * - __u32
> >>>> + - ``count``
> >>>> + - The number of buffers to be deleted with indices 'index' until 'index + count - 1'.
> >>>> + All buffers in this range must be valid and in DEQUEUED state.
> >>> I wonder if this wouldn't be an inconvenience for the userspace. Would
> >>> there be anything wrong with allowing ranges with holes?
> >>> (Agreed about the DEQUEUED part of course.)
> >>
> >> For me a range as to be valid but the matter of taste.
> >>
> >
> > @Hans Verkuil do you have an opinion?
> > I could imagine that applications may want to just delete multiple
> > disjoint ranges in one ioctl, which wouldn't be possible if we
> > prohibit holes in the ranges.
>
> First of all I want to state that I am mostly concentrating on patches 1-50 to get
> those merged first. The actual delete_bufs patches will need more review from me.
Makes sense. Thanks for the heads up. I did review the implementation
and it looks reasonable to me. I think the initial refactoring did a
lot of good to the code to make it much easier to implement the actual
deletion.
>
> That said, while I do not have a very strong opinion on this, I do feel it is better
> to be strict about this. It can always be relaxed later. Deleting buffers is an
> important operation, and userspace should know what it is doing. Deleting non-existing
> buffers seems iffy to me.
I don't have a strong opinion, so I guess I'm okay with that, if you
feel strongly about it. I'm just curious if there would be any
practical issue with it. After all, even if we disallow holes in the
deleted range, there are still many ways the userspace can be buggy
about it, e.g. by deleting buffers belonging to two adjacent ranges.
(On the other hand, the less ways to make mistakes, the better, I
guess...)
>
> Regards,
>
> Hans
>
> >
> >>>
> >>>> + In error case errno is set to ``EINVAL`` error code and index returns the index of
> >>>> + the invalid buffer.
> >>>> + If count and index are set to 0 :ref:`VIDIOC_DELETE_BUFS` will return 0.
> >>> Hmm, do we care about index if count is zero?
> >>
> >> No we don't I will change that.
> >>
> >>>
> >>>> + * - __u32
> >>>> + - ``type``
> >>>> + - Type of the stream or buffers, this is the same as the struct
> >>>> + :c:type:`v4l2_format` ``type`` field. See
> >>>> + :c:type:`v4l2_buf_type` for valid values.
> >>>> + * - __u32
> >>>> + - ``reserved``\ [13]
> >>>> + - A place holder for future extensions. Drivers and applications
> >>>> + must set the array to zero.
> >>>> +
> >>>> +Return Value
> >>>> +============
> >>>> +
> >>>> +On success 0 is returned, on error -1 and the ``errno`` variable is set
> >>>> +appropriately. The generic error codes are described at the
> >>>> +:ref:`Generic Error Codes <gen-errors>` chapter.
> >>>> +
> >>>> +EBUSY
> >>>> + File I/O is in progress.
> >>>> +
> >>>> +EINVAL
> >>>> + The buffer ``index`` doesn't exist in the queue.
> >>>> diff --git a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >>>> index 0b3a41a45d05..14d4a49c2945 100644
> >>>> --- a/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >>>> +++ b/Documentation/userspace-api/media/v4l/vidioc-reqbufs.rst
> >>>> @@ -121,6 +121,7 @@ aborting or finishing any DMA in progress, an implicit
> >>>> .. _V4L2-BUF-CAP-SUPPORTS-M2M-HOLD-CAPTURE-BUF:
> >>>> .. _V4L2-BUF-CAP-SUPPORTS-MMAP-CACHE-HINTS:
> >>>> .. _V4L2-BUF-CAP-SUPPORTS-MAX-NUM-BUFFERS:
> >>>> +.. _V4L2-BUF-CAP-SUPPORTS-DELETE-BUFS:
> >>>>
> >>>> .. raw:: latex
> >>>>
> >>>> diff --git a/drivers/media/common/videobuf2/videobuf2-core.c b/drivers/media/common/videobuf2/videobuf2-core.c
> >>>> index 010a8bca0240..7068930a0ba6 100644
> >>>> --- a/drivers/media/common/videobuf2/videobuf2-core.c
> >>>> +++ b/drivers/media/common/videobuf2/videobuf2-core.c
> >>>> @@ -1665,6 +1665,36 @@ int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb)
> >>>> }
> >>>> EXPORT_SYMBOL_GPL(vb2_core_prepare_buf);
> >>>>
> >>>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count)
> >>>> +{
> >>>> + unsigned int i, ret = 0;
> >>>> +
> >>>> + if (start == 0 && count == 0)
> >>> I guess related to the earlier comment, but why do we care about start
> >>> being zero?
> >>>
> >>>> + return 0;
> >>>> +
> >>>> + mutex_lock(&q->mmap_lock);
> >>>> +
> >>>> + for (i = start; i < start + count && i < q->max_num_buffers; i++) {
> >>>> + struct vb2_buffer *vb = vb2_get_buffer(q, i);
> >>>> +
> >>>> + if (!vb) {
> >>>> + ret = -EINVAL;
> >>>> + goto unlock;
> >>>> + }
> >>>> + if (vb->state != VB2_BUF_STATE_DEQUEUED) {
> >>>> + ret = -EINVAL;
> >>>> + goto unlock;
> >>>> + }
> >>>> + }
> >>>> + __vb2_queue_free(q, start, count);
> >>>> + dprintk(q, 2, "buffers deleted\n");
> >>>> +
> >>>> +unlock:
> >>>> + mutex_unlock(&q->mmap_lock);
> >>>> + return ret;
> >>>> +}
> >>>> +EXPORT_SYMBOL_GPL(vb2_core_delete_bufs);
> >>>> +
> >>>> /*
> >>>> * vb2_start_streaming() - Attempt to start streaming.
> >>>> * @q: videobuf2 queue
> >>>> diff --git a/drivers/media/common/videobuf2/videobuf2-v4l2.c b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >>>> index 56daf3b5b2ba..f003618efbc1 100644
> >>>> --- a/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >>>> +++ b/drivers/media/common/videobuf2/videobuf2-v4l2.c
> >>>> @@ -694,6 +694,8 @@ static void fill_buf_caps(struct vb2_queue *q, u32 *caps)
> >>>> if (q->supports_requests)
> >>>> *caps |= V4L2_BUF_CAP_SUPPORTS_REQUESTS;
> >>>> #endif
> >>>> + if (q->supports_delete_bufs)
> >>>> + *caps |= V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS;
> >>>> }
> >>>>
> >>>> static void validate_memory_flags(struct vb2_queue *q,
> >>>> @@ -751,6 +753,12 @@ int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> >>>> }
> >>>> EXPORT_SYMBOL_GPL(vb2_prepare_buf);
> >>>>
> >>>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d)
> >>>> +{
> >>>> + return vb2_core_delete_bufs(q, d->index, d->count);
> >>>> +}
> >>>> +EXPORT_SYMBOL_GPL(vb2_delete_bufs);
> >>>> +
> >>>> int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create)
> >>>> {
> >>>> unsigned requested_planes = 1;
> >>>> @@ -1012,6 +1020,18 @@ EXPORT_SYMBOL_GPL(vb2_poll);
> >>>>
> >>>> /* vb2 ioctl helpers */
> >>>>
> >>>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> >>>> + struct v4l2_delete_buffers *p)
> >>>> +{
> >>>> + struct video_device *vdev = video_devdata(file);
> >>>> +
> >>>> + if (vb2_queue_is_busy(vdev->queue, file))
> >>>> + return -EBUSY;
> >>>> +
> >>>> + return vb2_delete_bufs(vdev->queue, p);
> >>>> +}
> >>>> +EXPORT_SYMBOL_GPL(vb2_ioctl_delete_bufs);
> >>>> +
> >>>> int vb2_ioctl_reqbufs(struct file *file, void *priv,
> >>>> struct v4l2_requestbuffers *p)
> >>>> {
> >>>> diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
> >>>> index f81279492682..215654fd6581 100644
> >>>> --- a/drivers/media/v4l2-core/v4l2-dev.c
> >>>> +++ b/drivers/media/v4l2-core/v4l2-dev.c
> >>>> @@ -720,6 +720,7 @@ static void determine_valid_ioctls(struct video_device *vdev)
> >>>> SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf);
> >>>> SET_VALID_IOCTL(ops, VIDIOC_STREAMON, vidioc_streamon);
> >>>> SET_VALID_IOCTL(ops, VIDIOC_STREAMOFF, vidioc_streamoff);
> >>>> + SET_VALID_IOCTL(ops, VIDIOC_DELETE_BUFS, vidioc_delete_bufs);
> >>>> }
> >>>>
> >>>> if (is_vid || is_vbi || is_meta) {
> >>>> diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
> >>>> index 4d90424cbfc4..e9dcf439f9f3 100644
> >>>> --- a/drivers/media/v4l2-core/v4l2-ioctl.c
> >>>> +++ b/drivers/media/v4l2-core/v4l2-ioctl.c
> >>>> @@ -489,6 +489,13 @@ static void v4l_print_create_buffers(const void *arg, bool write_only)
> >>>> v4l_print_format(&p->format, write_only);
> >>>> }
> >>>>
> >>>> +static void v4l_print_delete_buffers(const void *arg, bool write_only)
> >>>> +{
> >>>> + const struct v4l2_delete_buffers *p = arg;
> >>>> +
> >>>> + pr_cont("index=%u, count=%u\n", p->index, p->count);
> >>>> +}
> >>>> +
> >>>> static void v4l_print_streamparm(const void *arg, bool write_only)
> >>>> {
> >>>> const struct v4l2_streamparm *p = arg;
> >>>> @@ -2161,6 +2168,15 @@ static int v4l_prepare_buf(const struct v4l2_ioctl_ops *ops,
> >>>> return ret ? ret : ops->vidioc_prepare_buf(file, fh, b);
> >>>> }
> >>>>
> >>>> +static int v4l_delete_bufs(const struct v4l2_ioctl_ops *ops,
> >>>> + struct file *file, void *fh, void *arg)
> >>>> +{
> >>>> + struct v4l2_delete_buffers *delete = arg;
> >>>> + int ret = check_fmt(file, delete->type);
> >>> Should we also have
> >>>
> >>> memset_after(delete, 0, type);
> >>>
> >>> here similar to how other ioctl handlers clear the reserved fields?
> >>
> >> I will add it.
> >>
> >>>
> >>>> +
> >>>> + return ret ? ret : ops->vidioc_delete_bufs(file, fh, delete);
> >>>> +}
> >>>> +
> >>>> static int v4l_g_parm(const struct v4l2_ioctl_ops *ops,
> >>>> struct file *file, void *fh, void *arg)
> >>>> {
> >>>> @@ -2910,6 +2926,7 @@ static const struct v4l2_ioctl_info v4l2_ioctls[] = {
> >>>> IOCTL_INFO(VIDIOC_ENUM_FREQ_BANDS, v4l_enum_freq_bands, v4l_print_freq_band, 0),
> >>>> IOCTL_INFO(VIDIOC_DBG_G_CHIP_INFO, v4l_dbg_g_chip_info, v4l_print_dbg_chip_info, INFO_FL_CLEAR(v4l2_dbg_chip_info, match)),
> >>>> IOCTL_INFO(VIDIOC_QUERY_EXT_CTRL, v4l_query_ext_ctrl, v4l_print_query_ext_ctrl, INFO_FL_CTRL | INFO_FL_CLEAR(v4l2_query_ext_ctrl, id)),
> >>>> + IOCTL_INFO(VIDIOC_DELETE_BUFS, v4l_delete_bufs, v4l_print_delete_buffers, INFO_FL_PRIO | INFO_FL_QUEUE | INFO_FL_CLEAR(v4l2_delete_buffers, type)),
> >>>> };
> >>>> #define V4L2_IOCTLS ARRAY_SIZE(v4l2_ioctls)
> >>>>
> >>>> diff --git a/include/media/v4l2-ioctl.h b/include/media/v4l2-ioctl.h
> >>>> index edb733f21604..55afbde54211 100644
> >>>> --- a/include/media/v4l2-ioctl.h
> >>>> +++ b/include/media/v4l2-ioctl.h
> >>>> @@ -163,6 +163,8 @@ struct v4l2_fh;
> >>>> * :ref:`VIDIOC_CREATE_BUFS <vidioc_create_bufs>` ioctl
> >>>> * @vidioc_prepare_buf: pointer to the function that implements
> >>>> * :ref:`VIDIOC_PREPARE_BUF <vidioc_prepare_buf>` ioctl
> >>>> + * @vidioc_delete_bufs: pointer to the function that implements
> >>>> + * :ref:`VIDIOC_DELETE_BUFS <vidioc_delete_bufs>` ioctl
> >>>> * @vidioc_overlay: pointer to the function that implements
> >>>> * :ref:`VIDIOC_OVERLAY <vidioc_overlay>` ioctl
> >>>> * @vidioc_g_fbuf: pointer to the function that implements
> >>>> @@ -422,6 +424,8 @@ struct v4l2_ioctl_ops {
> >>>> struct v4l2_create_buffers *b);
> >>>> int (*vidioc_prepare_buf)(struct file *file, void *fh,
> >>>> struct v4l2_buffer *b);
> >>>> + int (*vidioc_delete_bufs)(struct file *file, void *fh,
> >>>> + struct v4l2_delete_buffers *d);
> >>>>
> >>>> int (*vidioc_overlay)(struct file *file, void *fh, unsigned int i);
> >>>> int (*vidioc_g_fbuf)(struct file *file, void *fh,
> >>>> diff --git a/include/media/videobuf2-core.h b/include/media/videobuf2-core.h
> >>>> index 288477075a0e..db3bd986624e 100644
> >>>> --- a/include/media/videobuf2-core.h
> >>>> +++ b/include/media/videobuf2-core.h
> >>>> @@ -507,6 +507,7 @@ struct vb2_buf_ops {
> >>>> * @supports_requests: this queue supports the Request API.
> >>>> * @requires_requests: this queue requires the Request API. If this is set to 1,
> >>>> * then supports_requests must be set to 1 as well.
> >>>> + * @supports_delete_bufs: this queue supports DELETE_BUFS ioctl.
> >>>> * @uses_qbuf: qbuf was used directly for this queue. Set to 1 the first
> >>>> * time this is called. Set to 0 when the queue is canceled.
> >>>> * If this is 1, then you cannot queue buffers from a request.
> >>>> @@ -595,6 +596,7 @@ struct vb2_queue {
> >>>> unsigned int quirk_poll_must_check_waiting_for_buffers:1;
> >>>> unsigned int supports_requests:1;
> >>>> unsigned int requires_requests:1;
> >>>> + unsigned int supports_delete_bufs:1;
> >>>> unsigned int uses_qbuf:1;
> >>>> unsigned int uses_requests:1;
> >>>> unsigned int allow_cache_hints:1;
> >>>> @@ -846,6 +848,16 @@ int vb2_core_create_bufs(struct vb2_queue *q, enum vb2_memory memory,
> >>>> */
> >>>> int vb2_core_prepare_buf(struct vb2_queue *q, struct vb2_buffer *vb, void *pb);
> >>>>
> >>>> +/**
> >>>> + * vb2_core_delete_bufs() -
> >>>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> >>>> + * @start: first index of the range of buffers to delete.
> >>>> + * @count: number of buffers to delete.
> >>>> + *
> >>>> + * Return: returns zero on success; an error code otherwise.
> >>>> + */
> >>>> +int vb2_core_delete_bufs(struct vb2_queue *q, unsigned int start, unsigned int count);
> >>>> +
> >>>> /**
> >>>> * vb2_core_qbuf() - Queue a buffer from userspace
> >>>> *
> >>>> diff --git a/include/media/videobuf2-v4l2.h b/include/media/videobuf2-v4l2.h
> >>>> index 5a845887850b..79cea8459f52 100644
> >>>> --- a/include/media/videobuf2-v4l2.h
> >>>> +++ b/include/media/videobuf2-v4l2.h
> >>>> @@ -118,6 +118,17 @@ int vb2_create_bufs(struct vb2_queue *q, struct v4l2_create_buffers *create);
> >>>> */
> >>>> int vb2_prepare_buf(struct vb2_queue *q, struct media_device *mdev,
> >>>> struct v4l2_buffer *b);
> >>>> +/**
> >>>> + * vb2_delete_bufs() - Delete buffers from the queue
> >>>> + *
> >>>> + * @q: pointer to &struct vb2_queue with videobuf2 queue.
> >>>> + * @d: delete parameter, passed from userspace to
> >>>> + * &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver
> >>>> + *
> >>>> + * The return values from this function are intended to be directly returned
> >>>> + * from &v4l2_ioctl_ops->vidioc_delete_bufs handler in driver.
> >>>> + */
> >>>> +int vb2_delete_bufs(struct vb2_queue *q, struct v4l2_delete_buffers *d);
> >>>>
> >>>> /**
> >>>> * vb2_qbuf() - Queue a buffer from userspace
> >>>> @@ -334,6 +345,8 @@ int vb2_ioctl_streamon(struct file *file, void *priv, enum v4l2_buf_type i);
> >>>> int vb2_ioctl_streamoff(struct file *file, void *priv, enum v4l2_buf_type i);
> >>>> int vb2_ioctl_expbuf(struct file *file, void *priv,
> >>>> struct v4l2_exportbuffer *p);
> >>>> +int vb2_ioctl_delete_bufs(struct file *file, void *priv,
> >>>> + struct v4l2_delete_buffers *p);
> >>>>
> >>>> /* struct v4l2_file_operations helpers */
> >>>>
> >>>> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> >>>> index 13ddb5abf584..96e105149906 100644
> >>>> --- a/include/uapi/linux/videodev2.h
> >>>> +++ b/include/uapi/linux/videodev2.h
> >>>> @@ -1036,6 +1036,7 @@ struct v4l2_requestbuffers {
> >>>> #define V4L2_BUF_CAP_SUPPORTS_M2M_HOLD_CAPTURE_BUF (1 << 5)
> >>>> #define V4L2_BUF_CAP_SUPPORTS_MMAP_CACHE_HINTS (1 << 6)
> >>>> #define V4L2_BUF_CAP_SUPPORTS_MAX_NUM_BUFFERS (1 << 7)
> >>>> +#define V4L2_BUF_CAP_SUPPORTS_DELETE_BUFS (1 << 8)
> >>>>
> >>>> /**
> >>>> * struct v4l2_plane - plane info for multi-planar buffers
> >>>> @@ -2622,6 +2623,20 @@ struct v4l2_create_buffers {
> >>>> __u32 reserved[5];
> >>>> };
> >>>>
> >>>> +/**
> >>>> + * struct v4l2_delete_buffers - VIDIOC_DELETE_BUFS argument
> >>>> + * @index: the first buffer to be deleted
> >>>> + * @count: number of buffers to delete
> >>>> + * @type: enum v4l2_buf_type
> >>>> + * @reserved: future extensions
> >>>> + */
> >>>> +struct v4l2_delete_buffers {
> >>>> + __u32 index;
> >>>> + __u32 count;
> >>>> + __u32 type;
> >>>> + __u32 reserved[13];
> >>>> +};
> >>>> +
> >>>> /*
> >>>> * I O C T L C O D E S F O R V I D E O D E V I C E S
> >>>> *
> >>>> @@ -2721,6 +2736,8 @@ struct v4l2_create_buffers {
> >>>> #define VIDIOC_DBG_G_CHIP_INFO _IOWR('V', 102, struct v4l2_dbg_chip_info)
> >>>>
> >>>> #define VIDIOC_QUERY_EXT_CTRL _IOWR('V', 103, struct v4l2_query_ext_ctrl)
> >>>> +#define VIDIOC_DELETE_BUFS _IOWR('V', 104, struct v4l2_delete_buffers)
> >>>> +
> >>>>
> >>>> /* Reminder: when adding new ioctls please add support for them to
> >>>> drivers/media/v4l2-core/v4l2-compat-ioctl32.c as well! */
> >>> Do we also need to add support for the new ioctl in there?
> >>
> >> It only use _u32, is aligned on cache boundary and doesn't use pointer.
> >> For me 32 and 64 bits structures are identical so it doesn't need to be convert.
> >> Maybe I'm wrong when testing it with pahole ?
> >
> > Ah, right. I double checked the compat code and indeed if an ioctl is
> > not listed there, it will just use the default copy_from_user, so we
> > should be good.
> >
> > Maybe one day we should update that comment to explain how to check if
> > it's necessary to add a compat handler.
> >
> > Best regards,
> > Tomasz
>
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
^ permalink raw reply [flat|nested] 399+ messages in thread
end of thread, other threads:[~2023-11-10 9:26 UTC | newest]
Thread overview: 399+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-10-31 16:30 [PATCH v14 00/56] Add DELETE_BUF ioctl Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` [PATCH v14 01/56] media: videobuf2: Rename offset parameter Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-08 15:11 ` Andrzej Pietrasiewicz
2023-11-08 15:11 ` Andrzej Pietrasiewicz
2023-11-08 15:11 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 02/56] media: videobuf2: Rework offset 'cookie' encoding pattern Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-08 6:23 ` Tomasz Figa
2023-11-08 6:23 ` Tomasz Figa
2023-11-08 6:23 ` Tomasz Figa
2023-11-08 10:14 ` Benjamin Gaignard
2023-11-08 10:14 ` Benjamin Gaignard
2023-11-08 10:14 ` Benjamin Gaignard
2023-11-08 10:31 ` Hans Verkuil
2023-11-08 10:31 ` Hans Verkuil
2023-11-08 10:31 ` Hans Verkuil
2023-10-31 16:30 ` [PATCH v14 03/56] media: videobuf2: Stop spamming kernel log with all queue counter Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-08 15:26 ` Andrzej Pietrasiewicz
2023-11-08 15:26 ` Andrzej Pietrasiewicz
2023-11-08 15:26 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 04/56] media: videobuf2: Use vb2_buffer instead of index Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-08 8:08 ` Tomasz Figa
2023-11-08 8:08 ` Tomasz Figa
2023-11-08 8:08 ` Tomasz Figa
2023-11-08 15:52 ` Andrzej Pietrasiewicz
2023-11-08 15:52 ` Andrzej Pietrasiewicz
2023-11-08 15:52 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 05/56] media: videobuf2: Access vb2_queue bufs array through helper functions Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-08 8:50 ` Tomasz Figa
2023-11-08 8:50 ` Tomasz Figa
2023-11-08 8:50 ` Tomasz Figa
2023-11-08 10:24 ` Benjamin Gaignard
2023-11-08 10:24 ` Benjamin Gaignard
2023-11-08 10:24 ` Benjamin Gaignard
2023-11-09 4:27 ` Tomasz Figa
2023-11-09 4:27 ` Tomasz Figa
2023-11-09 4:27 ` Tomasz Figa
2023-10-31 16:30 ` [PATCH v14 06/56] media: videobuf2: Remove duplicated index vs q->num_buffers check Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-08 16:46 ` Andrzej Pietrasiewicz
2023-11-08 16:46 ` Andrzej Pietrasiewicz
2023-11-08 16:46 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 07/56] media: videobuf2: Add helper to get queue number of buffers Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-08 16:50 ` Andrzej Pietrasiewicz
2023-11-08 16:50 ` Andrzej Pietrasiewicz
2023-11-08 16:50 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 08/56] media: videobuf2: Use vb2_get_num_buffers() helper Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-08 9:42 ` Tomasz Figa
2023-11-08 9:42 ` Tomasz Figa
2023-11-08 9:42 ` Tomasz Figa
2023-11-08 13:22 ` Benjamin Gaignard
2023-11-08 13:22 ` Benjamin Gaignard
2023-11-08 13:22 ` Benjamin Gaignard
2023-11-09 4:36 ` Tomasz Figa
2023-11-09 4:36 ` Tomasz Figa
2023-11-09 4:36 ` Tomasz Figa
2023-10-31 16:30 ` [PATCH v14 09/56] media: amphion: Use vb2_get_buffer() instead of directly access to buffers array Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-08 16:55 ` Andrzej Pietrasiewicz
2023-11-08 16:55 ` Andrzej Pietrasiewicz
2023-11-08 16:55 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 10/56] media: amphion: Stop direct calls to queue num_buffers field Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-08 16:56 ` Andrzej Pietrasiewicz
2023-11-08 16:56 ` Andrzej Pietrasiewicz
2023-11-08 16:56 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 11/56] media: mediatek: jpeg: Use vb2_get_buffer() instead of directly access to buffers array Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-08 17:00 ` Andrzej Pietrasiewicz
2023-11-08 17:00 ` Andrzej Pietrasiewicz
2023-11-08 17:00 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 12/56] media: mediatek: vdec: Remove useless loop Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 9:15 ` Andrzej Pietrasiewicz
2023-11-09 9:15 ` Andrzej Pietrasiewicz
2023-11-09 9:15 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 13/56] media: mediatek: vcodec: Stop direct calls to queue num_buffers field Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 9:21 ` Andrzej Pietrasiewicz
2023-11-09 9:21 ` Andrzej Pietrasiewicz
2023-11-09 9:21 ` Andrzej Pietrasiewicz
2023-11-09 9:23 ` Andrzej Pietrasiewicz
2023-11-09 9:23 ` Andrzej Pietrasiewicz
2023-11-09 9:23 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 14/56] media: sti: hva: Use vb2_get_buffer() instead of directly access to buffers array Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 9:29 ` Andrzej Pietrasiewicz
2023-11-09 9:29 ` Andrzej Pietrasiewicz
2023-11-09 9:29 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 15/56] media: visl: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 9:38 ` Andrzej Pietrasiewicz
2023-11-09 9:38 ` Andrzej Pietrasiewicz
2023-11-09 9:38 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 16/56] media: atomisp: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` [PATCH v14 17/56] media: atomisp: Stop direct calls to queue num_buffers field Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` [PATCH v14 18/56] media: dvb-core: Use vb2_get_buffer() instead of directly access to buffers array Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 9:46 ` Andrzej Pietrasiewicz
2023-11-09 9:46 ` Andrzej Pietrasiewicz
2023-11-09 9:46 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 19/56] media: dvb-core: Do not initialize twice queue num_buffer field Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 9:50 ` Andrzej Pietrasiewicz
2023-11-09 9:50 ` Andrzej Pietrasiewicz
2023-11-09 9:50 ` Andrzej Pietrasiewicz
2023-11-09 10:14 ` Benjamin Gaignard
2023-11-09 10:14 ` Benjamin Gaignard
2023-11-09 10:14 ` Benjamin Gaignard
2023-10-31 16:30 ` [PATCH v14 20/56] media: dvb-frontends: rtl2832: Stop direct calls to queue num_buffers field Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 9:56 ` Andrzej Pietrasiewicz
2023-11-09 9:56 ` Andrzej Pietrasiewicz
2023-11-09 9:56 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 21/56] media: pci: dt3155: Remove useless check Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 10:03 ` Andrzej Pietrasiewicz
2023-11-09 10:03 ` Andrzej Pietrasiewicz
2023-11-09 10:03 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 22/56] media: pci: tw686x: Stop direct calls to queue num_buffers field Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 10:05 ` Andrzej Pietrasiewicz
2023-11-09 10:05 ` Andrzej Pietrasiewicz
2023-11-09 10:05 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 23/56] media: pci: cx18: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 10:07 ` Andrzej Pietrasiewicz
2023-11-09 10:07 ` Andrzej Pietrasiewicz
2023-11-09 10:07 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 24/56] media: pci: netup_unidvb: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 10:09 ` Andrzej Pietrasiewicz
2023-11-09 10:09 ` Andrzej Pietrasiewicz
2023-11-09 10:09 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 25/56] media: pci: tw68: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 10:13 ` Andrzej Pietrasiewicz
2023-11-09 10:13 ` Andrzej Pietrasiewicz
2023-11-09 10:13 ` Andrzej Pietrasiewicz
2023-11-09 10:23 ` Benjamin Gaignard
2023-11-09 10:23 ` Benjamin Gaignard
2023-11-09 10:23 ` Benjamin Gaignard
2023-10-31 16:30 ` [PATCH v14 26/56] media: i2c: video-i2c: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 10:18 ` Andrzej Pietrasiewicz
2023-11-09 10:18 ` Andrzej Pietrasiewicz
2023-11-09 10:18 ` Andrzej Pietrasiewicz
2023-11-09 10:26 ` Benjamin Gaignard
2023-11-09 10:26 ` Benjamin Gaignard
2023-11-09 10:26 ` Benjamin Gaignard
2023-10-31 16:30 ` [PATCH v14 27/56] media: coda: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 10:22 ` Andrzej Pietrasiewicz
2023-11-09 10:22 ` Andrzej Pietrasiewicz
2023-11-09 10:22 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 28/56] media: nxp: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 10:26 ` Andrzej Pietrasiewicz
2023-11-09 10:26 ` Andrzej Pietrasiewicz
2023-11-09 10:26 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 29/56] media: verisilicon: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 10:28 ` Andrzej Pietrasiewicz
2023-11-09 10:28 ` Andrzej Pietrasiewicz
2023-11-09 10:28 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 30/56] media: test-drivers: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 11:10 ` Andrzej Pietrasiewicz
2023-11-09 11:10 ` Andrzej Pietrasiewicz
2023-11-09 11:10 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 31/56] media: imx: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 11:12 ` Andrzej Pietrasiewicz
2023-11-09 11:12 ` Andrzej Pietrasiewicz
2023-11-09 11:12 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 32/56] media: meson: vdec: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 11:17 ` Andrzej Pietrasiewicz
2023-11-09 11:17 ` Andrzej Pietrasiewicz
2023-11-09 11:17 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 33/56] touchscreen: sur40: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 11:19 ` Andrzej Pietrasiewicz
2023-11-09 11:19 ` Andrzej Pietrasiewicz
2023-11-09 11:19 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 34/56] sample: v4l: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 11:19 ` Andrzej Pietrasiewicz
2023-11-09 11:19 ` Andrzej Pietrasiewicz
2023-11-09 11:19 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 35/56] media: cedrus: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 11:27 ` Andrzej Pietrasiewicz
2023-11-09 11:27 ` Andrzej Pietrasiewicz
2023-11-09 11:27 ` Andrzej Pietrasiewicz
2023-11-09 14:14 ` Paul Kocialkowski
2023-11-09 14:14 ` Paul Kocialkowski
2023-11-09 14:14 ` Paul Kocialkowski
2023-11-09 15:48 ` Andrzej Pietrasiewicz
2023-11-09 15:48 ` Andrzej Pietrasiewicz
2023-11-09 15:48 ` Andrzej Pietrasiewicz
2023-11-09 15:54 ` Benjamin Gaignard
2023-11-09 15:54 ` Benjamin Gaignard
2023-11-09 15:54 ` Benjamin Gaignard
2023-11-09 16:29 ` Paul Kocialkowski
2023-11-09 16:29 ` Paul Kocialkowski
2023-11-09 16:29 ` Paul Kocialkowski
2023-10-31 16:30 ` [PATCH v14 36/56] media: nuvoton: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 11:29 ` Andrzej Pietrasiewicz
2023-11-09 11:29 ` Andrzej Pietrasiewicz
2023-11-09 11:29 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 37/56] media: renesas: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 11:30 ` Andrzej Pietrasiewicz
2023-11-09 11:30 ` Andrzej Pietrasiewicz
2023-11-09 11:30 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 38/56] media: ti: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 11:32 ` Andrzej Pietrasiewicz
2023-11-09 11:32 ` Andrzej Pietrasiewicz
2023-11-09 11:32 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 39/56] media: usb: airspy: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 11:33 ` Andrzej Pietrasiewicz
2023-11-09 11:33 ` Andrzej Pietrasiewicz
2023-11-09 11:33 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 40/56] media: usb: cx231xx: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 11:35 ` Andrzej Pietrasiewicz
2023-11-09 11:35 ` Andrzej Pietrasiewicz
2023-11-09 11:35 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 41/56] media: usb: hackrf: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 11:36 ` Andrzej Pietrasiewicz
2023-11-09 11:36 ` Andrzej Pietrasiewicz
2023-11-09 11:36 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 42/56] media: usb: usbtv: " Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 11:37 ` Andrzej Pietrasiewicz
2023-11-09 11:37 ` Andrzej Pietrasiewicz
2023-11-09 11:37 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 43/56] media: videobuf2: Be more flexible on the number of queue stored buffers Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-02 8:17 ` Hans Verkuil
2023-11-02 8:17 ` Hans Verkuil
2023-11-02 8:17 ` Hans Verkuil
2023-11-06 14:29 ` Benjamin Gaignard
2023-11-06 14:29 ` Benjamin Gaignard
2023-11-06 14:29 ` Benjamin Gaignard
2023-10-31 16:30 ` [PATCH v14 44/56] media: core: Report the maximum possible number of buffers for the queue Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 12:28 ` Andrzej Pietrasiewicz
2023-11-09 12:28 ` Andrzej Pietrasiewicz
2023-11-09 12:28 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 45/56] media: test-drivers: vivid: Increase max supported buffers for capture queues Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 12:31 ` Andrzej Pietrasiewicz
2023-11-09 12:31 ` Andrzej Pietrasiewicz
2023-11-09 12:31 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 46/56] media: test-drivers: vicodec: Increase max supported capture queue buffers Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 12:32 ` Andrzej Pietrasiewicz
2023-11-09 12:32 ` Andrzej Pietrasiewicz
2023-11-09 12:32 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 47/56] media: verisilicon: Refactor postprocessor to store more buffers Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 13:58 ` Andrzej Pietrasiewicz
2023-11-09 13:58 ` Andrzej Pietrasiewicz
2023-11-09 13:58 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 48/56] media: verisilicon: Store chroma and motion vectors offset Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 14:12 ` Andrzej Pietrasiewicz
2023-11-09 14:12 ` Andrzej Pietrasiewicz
2023-11-09 14:12 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 49/56] media: verisilicon: g2: Use common helpers to compute chroma and mv offsets Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 14:25 ` Andrzej Pietrasiewicz
2023-11-09 14:25 ` Andrzej Pietrasiewicz
2023-11-09 14:25 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 50/56] media: verisilicon: vp9: Allow to change resolution while streaming Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-11-09 14:59 ` Andrzej Pietrasiewicz
2023-11-09 14:59 ` Andrzej Pietrasiewicz
2023-11-09 14:59 ` Andrzej Pietrasiewicz
2023-10-31 16:30 ` [PATCH v14 51/56] media: core: Rework how create_buf index returned value is computed Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:30 ` Benjamin Gaignard
2023-10-31 16:31 ` [PATCH v14 52/56] media: core: Add bitmap manage bufs array entries Benjamin Gaignard
2023-10-31 16:31 ` Benjamin Gaignard
2023-10-31 16:31 ` Benjamin Gaignard
2023-11-08 10:44 ` Tomasz Figa
2023-11-08 10:44 ` Tomasz Figa
2023-11-08 10:44 ` Tomasz Figa
2023-11-08 15:30 ` Benjamin Gaignard
2023-11-08 15:30 ` Benjamin Gaignard
2023-11-08 15:30 ` Benjamin Gaignard
2023-11-09 7:28 ` Tomasz Figa
2023-11-09 7:28 ` Tomasz Figa
2023-11-09 7:28 ` Tomasz Figa
2023-10-31 16:31 ` [PATCH v14 53/56] media: core: Free range of buffers Benjamin Gaignard
2023-10-31 16:31 ` Benjamin Gaignard
2023-10-31 16:31 ` Benjamin Gaignard
2023-11-09 9:10 ` Tomasz Figa
2023-11-09 9:10 ` Tomasz Figa
2023-11-09 9:10 ` Tomasz Figa
2023-10-31 16:31 ` [PATCH v14 54/56] media: v4l2: Add DELETE_BUFS ioctl Benjamin Gaignard
2023-10-31 16:31 ` Benjamin Gaignard
2023-10-31 16:31 ` Benjamin Gaignard
2023-11-09 9:30 ` Tomasz Figa
2023-11-09 9:30 ` Tomasz Figa
2023-11-09 9:30 ` Tomasz Figa
2023-11-09 10:10 ` Benjamin Gaignard
2023-11-09 10:10 ` Benjamin Gaignard
2023-11-09 10:10 ` Benjamin Gaignard
2023-11-10 8:58 ` Tomasz Figa
2023-11-10 8:58 ` Tomasz Figa
2023-11-10 8:58 ` Tomasz Figa
2023-11-10 9:14 ` Hans Verkuil
2023-11-10 9:14 ` Hans Verkuil
2023-11-10 9:14 ` Hans Verkuil
2023-11-10 9:19 ` Tomasz Figa
2023-11-10 9:19 ` Tomasz Figa
2023-11-10 9:19 ` Tomasz Figa
2023-10-31 16:31 ` [PATCH v14 55/56] media: v4l2: Add mem2mem helpers for " Benjamin Gaignard
2023-10-31 16:31 ` Benjamin Gaignard
2023-10-31 16:31 ` Benjamin Gaignard
2023-10-31 16:31 ` [PATCH v14 56/56] media: test-drivers: Use helper " Benjamin Gaignard
2023-10-31 16:31 ` Benjamin Gaignard
2023-10-31 16:31 ` Benjamin Gaignard
2023-11-09 9:43 ` Tomasz Figa
2023-11-09 9:43 ` Tomasz Figa
2023-11-09 9:43 ` Tomasz Figa
2023-11-09 9:46 ` Benjamin Gaignard
2023-11-09 9:46 ` Benjamin Gaignard
2023-11-09 9:46 ` Benjamin Gaignard
2023-11-09 9:48 ` Tomasz Figa
2023-11-09 9:48 ` Tomasz Figa
2023-11-09 9:48 ` Tomasz Figa
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.