From: Daniel Vetter <daniel.vetter@ffwll.ch> To: DRI Development <dri-devel@lists.freedesktop.org> Cc: Daniel Vetter <daniel.vetter@ffwll.ch>, Intel Graphics Development <intel-gfx@lists.freedesktop.org>, Liviu Dudau <liviu.dudau@arm.com>, James Qian Wang <james.qian.wang@arm.com>, Daniel Vetter <daniel.vetter@intel.com>, Mihail Atanassov <mihail.atanassov@arm.com> Subject: [PATCH 09/65] drm/komeda: Annotate dma-fence critical section in commit path Date: Fri, 23 Oct 2020 14:21:20 +0200 [thread overview] Message-ID: <20201023122216.2373294-9-daniel.vetter@ffwll.ch> (raw) In-Reply-To: <20201023122216.2373294-1-daniel.vetter@ffwll.ch> Like the helpers, nothing special. Well except not, because we the critical section extends until after hw_done(), since that's the last thing which could hold up a subsequent atomic commit. That means the wait_for_flip_done is included, but that's not a problem, we're allowed to call dma_fence_wait() from signalling critical sections. Even on our own fence (which this does), it's just a bit confusing. But in a way those last 2 function calls are already part of the fence signalling critical section for the next atomic commit. Reading this I'm wondering why komeda waits for flip_done() before calling hw_done(), which is a bit backwards (but hey hw can be special). Might be good to throw a comment in there that explains why, because the original commit that added this just doesn't. Reviewed-by: James Qian Wang <james.qian.wang@arm.com> Cc: "James (Qian) Wang" <james.qian.wang@arm.com> Cc: Liviu Dudau <liviu.dudau@arm.com> Cc: Mihail Atanassov <mihail.atanassov@arm.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> --- drivers/gpu/drm/arm/display/komeda/komeda_kms.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c index 1f6682032ca4..cc5b5915bc5e 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c @@ -73,6 +73,7 @@ static struct drm_driver komeda_kms_driver = { static void komeda_kms_commit_tail(struct drm_atomic_state *old_state) { struct drm_device *dev = old_state->dev; + bool fence_cookie = dma_fence_begin_signalling(); drm_atomic_helper_commit_modeset_disables(dev, old_state); @@ -85,6 +86,8 @@ static void komeda_kms_commit_tail(struct drm_atomic_state *old_state) drm_atomic_helper_commit_hw_done(old_state); + dma_fence_end_signalling(fence_cookie); + drm_atomic_helper_cleanup_planes(dev, old_state); } -- 2.28.0 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
WARNING: multiple messages have this Message-ID (diff)
From: Daniel Vetter <daniel.vetter@ffwll.ch> To: DRI Development <dri-devel@lists.freedesktop.org> Cc: Daniel Vetter <daniel.vetter@ffwll.ch>, Intel Graphics Development <intel-gfx@lists.freedesktop.org>, James Qian Wang <james.qian.wang@arm.com>, Daniel Vetter <daniel.vetter@intel.com>, Mihail Atanassov <mihail.atanassov@arm.com> Subject: [Intel-gfx] [PATCH 09/65] drm/komeda: Annotate dma-fence critical section in commit path Date: Fri, 23 Oct 2020 14:21:20 +0200 [thread overview] Message-ID: <20201023122216.2373294-9-daniel.vetter@ffwll.ch> (raw) In-Reply-To: <20201023122216.2373294-1-daniel.vetter@ffwll.ch> Like the helpers, nothing special. Well except not, because we the critical section extends until after hw_done(), since that's the last thing which could hold up a subsequent atomic commit. That means the wait_for_flip_done is included, but that's not a problem, we're allowed to call dma_fence_wait() from signalling critical sections. Even on our own fence (which this does), it's just a bit confusing. But in a way those last 2 function calls are already part of the fence signalling critical section for the next atomic commit. Reading this I'm wondering why komeda waits for flip_done() before calling hw_done(), which is a bit backwards (but hey hw can be special). Might be good to throw a comment in there that explains why, because the original commit that added this just doesn't. Reviewed-by: James Qian Wang <james.qian.wang@arm.com> Cc: "James (Qian) Wang" <james.qian.wang@arm.com> Cc: Liviu Dudau <liviu.dudau@arm.com> Cc: Mihail Atanassov <mihail.atanassov@arm.com> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> --- drivers/gpu/drm/arm/display/komeda/komeda_kms.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c index 1f6682032ca4..cc5b5915bc5e 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c @@ -73,6 +73,7 @@ static struct drm_driver komeda_kms_driver = { static void komeda_kms_commit_tail(struct drm_atomic_state *old_state) { struct drm_device *dev = old_state->dev; + bool fence_cookie = dma_fence_begin_signalling(); drm_atomic_helper_commit_modeset_disables(dev, old_state); @@ -85,6 +86,8 @@ static void komeda_kms_commit_tail(struct drm_atomic_state *old_state) drm_atomic_helper_commit_hw_done(old_state); + dma_fence_end_signalling(fence_cookie); + drm_atomic_helper_cleanup_planes(dev, old_state); } -- 2.28.0 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
next prev parent reply other threads:[~2020-10-23 12:22 UTC|newest] Thread overview: 229+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-10-21 16:32 [PATCH 1/3] drm/atomic-helpers: remove legacy_cursor_update hacks Daniel Vetter 2020-10-21 16:32 ` [Intel-gfx] " Daniel Vetter 2020-10-21 16:32 ` [PATCH 2/3] drm/vc4: Drop legacy_cursor_update override Daniel Vetter 2020-10-21 16:32 ` [Intel-gfx] " Daniel Vetter 2020-10-22 13:19 ` Maxime Ripard 2020-10-22 13:19 ` [Intel-gfx] " Maxime Ripard 2020-10-21 16:32 ` [PATCH 3/3] drm/doc: Document legacy_cursor_update better Daniel Vetter 2020-10-21 16:32 ` [Intel-gfx] " Daniel Vetter 2020-10-21 17:14 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for series starting with [1/3] drm/atomic-helpers: remove legacy_cursor_update hacks Patchwork 2020-10-21 17:44 ` [Intel-gfx] ✗ Fi.CI.BAT: failure " Patchwork 2020-10-22 13:36 ` [PATCH 1/3] " Kazlauskas, Nicholas 2020-10-22 13:36 ` [Intel-gfx] " Kazlauskas, Nicholas 2020-10-22 14:03 ` Daniel Vetter 2020-10-22 14:03 ` [Intel-gfx] " Daniel Vetter 2020-10-22 17:02 ` Rob Clark 2020-10-22 17:02 ` Rob Clark 2020-10-22 17:02 ` Rob Clark 2020-10-22 17:21 ` Rob Clark 2020-10-22 17:21 ` Rob Clark 2020-10-22 17:21 ` Rob Clark 2020-10-22 19:16 ` Daniel Vetter 2020-10-22 19:16 ` Daniel Vetter 2020-10-22 19:16 ` Daniel Vetter 2020-10-23 15:02 ` Rob Clark 2020-10-23 15:02 ` Rob Clark 2020-10-23 15:02 ` Rob Clark 2020-10-23 16:00 ` Daniel Vetter 2020-10-23 16:00 ` Daniel Vetter 2020-10-23 16:00 ` Daniel Vetter 2020-10-23 16:21 ` Rob Clark 2020-10-23 16:21 ` Rob Clark 2020-10-23 16:21 ` Rob Clark 2020-10-22 20:17 ` [Intel-gfx] ✗ Fi.CI.BUILD: failure for series starting with [1/3] drm/atomic-helpers: remove legacy_cursor_update hacks (rev2) Patchwork 2020-10-23 12:21 ` [PATCH 01/65] drm/vc4: Drop legacy_cursor_update override Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` [PATCH 02/65] drm/doc: Document legacy_cursor_update better Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` [PATCH 03/65] mm: Track mmu notifiers in fs_reclaim_acquire/release Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-27 18:51 ` Christoph Hellwig 2020-10-27 18:51 ` [Intel-gfx] " Christoph Hellwig 2020-10-27 19:01 ` Daniel Vetter 2020-10-27 19:01 ` [Intel-gfx] " Daniel Vetter 2020-10-27 19:01 ` Daniel Vetter 2020-10-27 19:01 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 04/65] mm: Extract might_alloc() debug check Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 14:14 ` Vlastimil Babka 2020-10-23 14:14 ` [Intel-gfx] " Vlastimil Babka 2020-10-23 14:14 ` Vlastimil Babka 2020-10-23 14:16 ` Matthew Wilcox 2020-10-23 14:16 ` [Intel-gfx] " Matthew Wilcox 2020-10-23 14:37 ` Daniel Vetter 2020-10-23 14:37 ` [Intel-gfx] " Daniel Vetter 2020-10-23 14:37 ` Daniel Vetter 2020-10-23 14:37 ` Daniel Vetter 2020-10-23 14:45 ` Daniel Vetter 2020-10-23 14:45 ` [Intel-gfx] " Daniel Vetter 2020-10-23 14:45 ` Daniel Vetter 2020-10-23 14:45 ` Daniel Vetter 2020-10-23 20:53 ` Paul E. McKenney 2020-10-23 20:53 ` [Intel-gfx] " Paul E. McKenney 2020-10-23 20:53 ` Paul E. McKenney 2020-10-23 12:21 ` [PATCH 05/65] drm/atomic-helper: Add dma-fence annotations Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 06/65] drm/vkms: Annotate vblank timer Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 07/65] drm/vblank: Annotate with dma-fence signalling section Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 08/65] drm/amdgpu: add dma-fence annotations to atomic commit path Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter [this message] 2020-10-23 12:21 ` [Intel-gfx] [PATCH 09/65] drm/komeda: Annotate dma-fence critical section in " Daniel Vetter 2020-10-23 12:21 ` [PATCH 10/65] drm/malidp: " Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-28 13:27 ` Liviu Dudau 2020-10-28 13:27 ` [Intel-gfx] " Liviu Dudau 2020-10-23 12:21 ` [PATCH 11/65] drm/atmel: Use drm_atomic_helper_commit Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 12/65] drm/imx: Annotate dma-fence critical section in commit path Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 13/65] drm/omapdrm: " Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-26 7:13 ` Tomi Valkeinen 2020-10-26 7:13 ` [Intel-gfx] " Tomi Valkeinen 2020-10-23 12:21 ` [PATCH 14/65] drm/rcar-du: " Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-12-16 1:29 ` Laurent Pinchart 2020-12-16 1:29 ` [Intel-gfx] " Laurent Pinchart 2020-12-16 1:29 ` Laurent Pinchart 2020-12-16 9:41 ` Daniel Vetter 2020-12-16 9:41 ` [Intel-gfx] " Daniel Vetter 2020-12-16 9:41 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 15/65] drm/tegra: " Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 16/65] drm/tidss: " Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` [PATCH 17/65] drm/scheduler: use dma-fence annotations in main thread Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 18/65] drm/amdgpu: use dma-fence annotations in cs_submit() Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 19/65] drm/amdgpu: s/GFP_KERNEL/GFP_ATOMIC in scheduler code Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 20/65] drm/scheduler: use dma-fence annotations in tdr work Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 21/65] drm/amdgpu: use dma-fence annotations for gpu reset code Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 22/65] Revert "drm/amdgpu: add fbdev suspend/resume on gpu reset" Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 23/65] drm/i915: Annotate dma_fence_work Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 24/65] Revert "drm/i915: Annotate dma_fence_work" Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter [not found] ` <20201023122216.2373294-1-daniel.vetter-/w4YWyX8dFk@public.gmane.org> 2020-10-23 12:21 ` [PATCH 25/65] drm/nouveau: Drop mutex_lock_nested for atomic Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 26/65] drm/vmwgfx: Drop svga_lock Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` [PATCH 27/65] drm/vmwgfx: Always evict vram _before_ disabling it Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` [PATCH 28/65] drm/ttm: WARN_ON non-empty lru when disabling a resource manager Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 14:54 ` Christian König 2020-10-23 14:54 ` [Intel-gfx] " Christian König 2020-10-23 14:56 ` Daniel Vetter 2020-10-23 14:56 ` [Intel-gfx] " Daniel Vetter 2020-12-11 16:30 ` Daniel Vetter 2020-12-11 16:30 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` [PATCH 29/65] s390/pci: Remove races against pte updates Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:26 ` Daniel Vetter 2020-10-23 12:26 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:26 ` Daniel Vetter 2020-10-23 12:26 ` Daniel Vetter 2020-10-23 12:26 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 30/65] drm/exynos: Stop using frame_vector helpers Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 31/65] drm/exynos: Use FOLL_LONGTERM for g2d cmdlists Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 32/65] misc/habana: Stop using frame_vector helpers Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 33/65] misc/habana: Use FOLL_LONGTERM for userptr Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 34/65] mm/frame-vector: Use FOLL_LONGTERM Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 35/65] media: videobuf2: Move frame_vector into media subsystem Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 36/65] mm: Close race in generic_access_phys Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 37/65] mm: Add unsafe_follow_pfn Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 38/65] media/videbuf1|2: Mark follow_pfn usage as unsafe Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 39/65] vfio/type1: Mark follow_pfn " Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 40/65] PCI: Obey iomem restrictions for procfs mmap Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 41/65] /dev/mem: Only set filp->f_mapping Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 42/65] resource: Move devmem revoke code to resource framework Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 43/65] sysfs: Support zapping of binary attr mmaps Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` [PATCH 44/65] PCI: Revoke mappings like devmem Daniel Vetter 2020-10-23 12:21 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:21 ` Daniel Vetter 2020-10-23 12:25 ` [PATCH 01/65] drm/vc4: Drop legacy_cursor_update override Daniel Vetter 2020-10-23 12:25 ` [Intel-gfx] " Daniel Vetter 2020-10-23 12:26 ` [PATCH] drm/atomic-helpers: remove legacy_cursor_update hacks Daniel Vetter 2020-10-23 12:26 ` [Intel-gfx] " Daniel Vetter
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