From: John Stultz <john.stultz@linaro.org>
To: lkml <linux-kernel@vger.kernel.org>
Cc: John Stultz <john.stultz@linaro.org>,
Laura Abbott <labbott@redhat.com>,
Benjamin Gaignard <benjamin.gaignard@linaro.org>,
Sumit Semwal <sumit.semwal@linaro.org>,
Liam Mark <lmark@codeaurora.org>,
Pratik Patel <pratikp@codeaurora.org>,
Brian Starkey <Brian.Starkey@arm.com>,
Vincent Donnefort <Vincent.Donnefort@arm.com>,
Sudipto Paul <Sudipto.Paul@arm.com>,
"Andrew F . Davis" <afd@ti.com>,
Christoph Hellwig <hch@infradead.org>,
Chenbo Feng <fengc@google.com>,
Alistair Strachan <astrachan@google.com>,
Hridya Valsaraju <hridya@google.com>,
Hillf Danton <hdanton@sina.com>,
dri-devel@lists.freedesktop.org
Subject: [PATCH v12 0/5] DMA-BUF Heaps (destaging ION)
Date: Fri, 18 Oct 2019 05:23:18 +0000 [thread overview]
Message-ID: <20191018052323.21659-1-john.stultz@linaro.org> (raw)
Andrew brought up a reasonable concern with the CMA heap
enumeration in the previous patch set, and I had a few other
minor cleanups to add, so here is yet another pass at the
dma-buf heaps patchset Andrew and I have been working on which
tries to destage a fair chunk of ION functionality.
The patchset implements per-heap devices which can be opened
directly and then an ioctl is used to allocate a dmabuf from the
heap.
The interface is similar, but much simpler then IONs, only
providing an ALLOC ioctl.
Also, I've provided relatively simple system and cma heaps.
I've booted and tested these patches with AOSP on the HiKey960
using the kernel tree here:
https://git.linaro.org/people/john.stultz/android-dev.git/log/?h=dev/dma-buf-heap
And the userspace changes here:
https://android-review.googlesource.com/c/device/linaro/hikey/+/909436
Compared to ION, this patchset is missing the system-contig,
carveout and chunk heaps, as I don't have a device that uses
those, so I'm unable to do much useful validation there.
Additionally we have no upstream users of chunk or carveout,
and the system-contig has been deprecated in the common/andoid-*
kernels, so this should be ok.
I've also removed the stats accounting, since any such
accounting should be implemented by dma-buf core or the heaps
themselves.
New in v12:
* To address Andrew's concern about adding all CMA areas, the
CMA heap only adds the default CMA region for now.
* Minor cleanups and prep for loading heaps from modules
* I have patches to add other specified CMA regions, as well as
loading heaps from modules in my WIP tree, which I will submit
once this set is queued, here:
https://git.linaro.org/people/john.stultz/android-dev.git/log/?h=dev/dma-buf-heap-WIP
thanks
-john
Cc: Laura Abbott <labbott@redhat.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Liam Mark <lmark@codeaurora.org>
Cc: Pratik Patel <pratikp@codeaurora.org>
Cc: Brian Starkey <Brian.Starkey@arm.com>
Cc: Vincent Donnefort <Vincent.Donnefort@arm.com>
Cc: Sudipto Paul <Sudipto.Paul@arm.com>
Cc: Andrew F. Davis <afd@ti.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chenbo Feng <fengc@google.com>
Cc: Alistair Strachan <astrachan@google.com>
Cc: Hridya Valsaraju <hridya@google.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: dri-devel@lists.freedesktop.org
Andrew F. Davis (1):
dma-buf: Add dma-buf heaps framework
John Stultz (4):
dma-buf: heaps: Add heap helpers
dma-buf: heaps: Add system heap to dmabuf heaps
dma-buf: heaps: Add CMA heap to dmabuf heaps
kselftests: Add dma-heap test
MAINTAINERS | 18 ++
drivers/dma-buf/Kconfig | 11 +
drivers/dma-buf/Makefile | 2 +
drivers/dma-buf/dma-heap.c | 271 ++++++++++++++++++
drivers/dma-buf/heaps/Kconfig | 14 +
drivers/dma-buf/heaps/Makefile | 4 +
drivers/dma-buf/heaps/cma_heap.c | 178 ++++++++++++
drivers/dma-buf/heaps/heap-helpers.c | 270 +++++++++++++++++
drivers/dma-buf/heaps/heap-helpers.h | 55 ++++
drivers/dma-buf/heaps/system_heap.c | 124 ++++++++
include/linux/dma-heap.h | 59 ++++
include/uapi/linux/dma-heap.h | 55 ++++
tools/testing/selftests/dmabuf-heaps/Makefile | 9 +
.../selftests/dmabuf-heaps/dmabuf-heap.c | 238 +++++++++++++++
14 files changed, 1308 insertions(+)
create mode 100644 drivers/dma-buf/dma-heap.c
create mode 100644 drivers/dma-buf/heaps/Kconfig
create mode 100644 drivers/dma-buf/heaps/Makefile
create mode 100644 drivers/dma-buf/heaps/cma_heap.c
create mode 100644 drivers/dma-buf/heaps/heap-helpers.c
create mode 100644 drivers/dma-buf/heaps/heap-helpers.h
create mode 100644 drivers/dma-buf/heaps/system_heap.c
create mode 100644 include/linux/dma-heap.h
create mode 100644 include/uapi/linux/dma-heap.h
create mode 100644 tools/testing/selftests/dmabuf-heaps/Makefile
create mode 100644 tools/testing/selftests/dmabuf-heaps/dmabuf-heap.c
--
2.17.1
next reply other threads:[~2019-10-18 5:23 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-18 5:23 John Stultz [this message]
2019-10-18 5:23 ` [PATCH v12 1/5] dma-buf: Add dma-buf heaps framework John Stultz
2019-10-18 11:18 ` Brian Starkey
2019-10-18 18:26 ` John Stultz
2019-10-21 9:35 ` Brian Starkey
2019-10-21 18:32 ` John Stultz
2019-10-18 5:23 ` [PATCH v12 2/5] dma-buf: heaps: Add heap helpers John Stultz
2019-10-18 5:23 ` [PATCH v12 3/5] dma-buf: heaps: Add system heap to dmabuf heaps John Stultz
2019-10-18 5:23 ` [PATCH v12 4/5] dma-buf: heaps: Add CMA " John Stultz
2019-10-18 11:21 ` Brian Starkey
2019-10-18 12:03 ` Benjamin Gaignard
2019-10-18 13:54 ` Andrew F. Davis
2019-10-18 18:29 ` John Stultz
2019-10-18 5:23 ` [PATCH v12 5/5] kselftests: Add dma-heap test John Stultz
2019-10-18 6:21 ` [PATCH v12 0/5] DMA-BUF Heaps (destaging ION) Sumit Semwal
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