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# b61614ec 03-Dec-2019 John Stultz <[email protected]>

dma-buf: heaps: Add CMA heap to dmabuf heaps

This adds a CMA heap, which allows userspace to allocate
a dma-buf of contiguous memory out of a CMA region.

This code is an evolution of the Android IO

dma-buf: heaps: Add CMA heap to dmabuf heaps

This adds a CMA heap, which allows userspace to allocate
a dma-buf of contiguous memory out of a CMA region.

This code is an evolution of the Android ION implementation, so
thanks to its original author and maintainters:
Benjamin Gaignard, Laura Abbott, and others!

NOTE: This patch only adds the default CMA heap. We will enable
selectively adding other CMA memory regions to the dmabuf heaps
interface with a later patch (which requires a dt binding)

Cc: Laura Abbott <[email protected]>
Cc: Benjamin Gaignard <[email protected]>
Cc: Sumit Semwal <[email protected]>
Cc: Liam Mark <[email protected]>
Cc: Pratik Patel <[email protected]>
Cc: Brian Starkey <[email protected]>
Cc: Vincent Donnefort <[email protected]>
Cc: Sudipto Paul <[email protected]>
Cc: Andrew F. Davis <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Chenbo Feng <[email protected]>
Cc: Alistair Strachan <[email protected]>
Cc: Hridya Valsaraju <[email protected]>
Cc: Sandeep Patil <[email protected]>
Cc: Hillf Danton <[email protected]>
Cc: Dave Airlie <[email protected]>
Cc: [email protected]
Reviewed-by: Benjamin Gaignard <[email protected]>
Reviewed-by: Brian Starkey <[email protected]>
Acked-by: Sandeep Patil <[email protected]>
Acked-by: Laura Abbott <[email protected]>
Tested-by: Ayan Kumar Halder <[email protected]>
Signed-off-by: John Stultz <[email protected]>
Signed-off-by: Sumit Semwal <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

show more ...


# efa04fef 03-Dec-2019 John Stultz <[email protected]>

dma-buf: heaps: Add system heap to dmabuf heaps

This patch adds system heap to the dma-buf heaps framework.

This allows applications to get a page-allocator backed dma-buf
for non-contiguous memory

dma-buf: heaps: Add system heap to dmabuf heaps

This patch adds system heap to the dma-buf heaps framework.

This allows applications to get a page-allocator backed dma-buf
for non-contiguous memory.

This code is an evolution of the Android ION implementation, so
thanks to its original authors and maintainters:
Rebecca Schultz Zavin, Colin Cross, Laura Abbott, and others!

Cc: Laura Abbott <[email protected]>
Cc: Benjamin Gaignard <[email protected]>
Cc: Sumit Semwal <[email protected]>
Cc: Liam Mark <[email protected]>
Cc: Pratik Patel <[email protected]>
Cc: Brian Starkey <[email protected]>
Cc: Vincent Donnefort <[email protected]>
Cc: Sudipto Paul <[email protected]>
Cc: Andrew F. Davis <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Chenbo Feng <[email protected]>
Cc: Alistair Strachan <[email protected]>
Cc: Hridya Valsaraju <[email protected]>
Cc: Sandeep Patil <[email protected]>
Cc: Hillf Danton <[email protected]>
Cc: Dave Airlie <[email protected]>
Cc: [email protected]
Reviewed-by: Benjamin Gaignard <[email protected]>
Reviewed-by: Brian Starkey <[email protected]>
Acked-by: Sandeep Patil <[email protected]>
Acked-by: Laura Abbott <[email protected]>
Tested-by: Ayan Kumar Halder <[email protected]>
Signed-off-by: John Stultz <[email protected]>
Signed-off-by: Sumit Semwal <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

show more ...


Revision tags: v5.4, v5.4-rc8, v5.4-rc7, v5.4-rc6
# 2e7f7cb2 30-Oct-2019 Sean Paul <[email protected]>

Revert "dma-buf: heaps: Add CMA heap to dmabuf heaps"

This reverts commit 43d7238fb9ac897b29912368b3359e72bae469c4.

This patchset doesn't meet the UAPI requirements set out in [1] for the DRM
subsy

Revert "dma-buf: heaps: Add CMA heap to dmabuf heaps"

This reverts commit 43d7238fb9ac897b29912368b3359e72bae469c4.

This patchset doesn't meet the UAPI requirements set out in [1] for the DRM
subsystem. Once the userspace component is reviewed and ready for merge
we can try again.

[1]- https://01.org/linuxgraphics/gfx-docs/drm/gpu/drm-uapi.html#open-source-userspace-requirements

Fixes: 43d7238fb9ac ("dma-buf: heaps: Add CMA heap to dmabuf heaps")
Cc: Laura Abbott <[email protected]>
Cc: Benjamin Gaignard <[email protected]>
Cc: Sumit Semwal <[email protected]>
Cc: Liam Mark <[email protected]>
Cc: Pratik Patel <[email protected]>
Cc: Brian Starkey <[email protected]>
Cc: Vincent Donnefort <[email protected]>
Cc: Sudipto Paul <[email protected]>
Cc: Andrew F. Davis <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Chenbo Feng <[email protected]>
Cc: Alistair Strachan <[email protected]>
Cc: Hridya Valsaraju <[email protected]>
Cc: Hillf Danton <[email protected]>
Cc: [email protected]
Cc: Brian Starkey <[email protected]>
Cc: John Stultz <[email protected]>
Cc: "Andrew F. Davis" <[email protected]>
Cc: [email protected]
Cc: [email protected]
Acked-by: David Airlie <[email protected]>
Signed-off-by: Sean Paul <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

show more ...


Revision tags: v5.4-rc5
# 43d7238f 21-Oct-2019 John Stultz <[email protected]>

dma-buf: heaps: Add CMA heap to dmabuf heaps

This adds a CMA heap, which allows userspace to allocate
a dma-buf of contiguous memory out of a CMA region.

This code is an evolution of the Android IO

dma-buf: heaps: Add CMA heap to dmabuf heaps

This adds a CMA heap, which allows userspace to allocate
a dma-buf of contiguous memory out of a CMA region.

This code is an evolution of the Android ION implementation, so
thanks to its original author and maintainters:
Benjamin Gaignard, Laura Abbott, and others!

NOTE: This patch only adds the default CMA heap. We will enable
selectively adding other CMA memory regions to the dmabuf heaps
interface with a later patch (which requires a dt binding)

Cc: Laura Abbott <[email protected]>
Cc: Benjamin Gaignard <[email protected]>
Cc: Sumit Semwal <[email protected]>
Cc: Liam Mark <[email protected]>
Cc: Pratik Patel <[email protected]>
Cc: Brian Starkey <[email protected]>
Cc: Vincent Donnefort <[email protected]>
Cc: Sudipto Paul <[email protected]>
Cc: Andrew F. Davis <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Chenbo Feng <[email protected]>
Cc: Alistair Strachan <[email protected]>
Cc: Hridya Valsaraju <[email protected]>
Cc: Hillf Danton <[email protected]>
Cc: [email protected]
Reviewed-by: Benjamin Gaignard <[email protected]>
Reviewed-by: Brian Starkey <[email protected]>
Acked-by: Laura Abbott <[email protected]>
Tested-by: Ayan Kumar Halder <[email protected]>
Signed-off-by: John Stultz <[email protected]>
Signed-off-by: Sumit Semwal <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

show more ...


# 47a32f9c 21-Oct-2019 John Stultz <[email protected]>

dma-buf: heaps: Add system heap to dmabuf heaps

This patch adds system heap to the dma-buf heaps framework.

This allows applications to get a page-allocator backed dma-buf
for non-contiguous memory

dma-buf: heaps: Add system heap to dmabuf heaps

This patch adds system heap to the dma-buf heaps framework.

This allows applications to get a page-allocator backed dma-buf
for non-contiguous memory.

This code is an evolution of the Android ION implementation, so
thanks to its original authors and maintainters:
Rebecca Schultz Zavin, Colin Cross, Laura Abbott, and others!

Cc: Laura Abbott <[email protected]>
Cc: Benjamin Gaignard <[email protected]>
Cc: Sumit Semwal <[email protected]>
Cc: Liam Mark <[email protected]>
Cc: Pratik Patel <[email protected]>
Cc: Brian Starkey <[email protected]>
Cc: Vincent Donnefort <[email protected]>
Cc: Sudipto Paul <[email protected]>
Cc: Andrew F. Davis <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Chenbo Feng <[email protected]>
Cc: Alistair Strachan <[email protected]>
Cc: Hridya Valsaraju <[email protected]>
Cc: Hillf Danton <[email protected]>
Cc: [email protected]
Reviewed-by: Benjamin Gaignard <[email protected]>
Reviewed-by: Brian Starkey <[email protected]>
Acked-by: Laura Abbott <[email protected]>
Tested-by: Ayan Kumar Halder <[email protected]>
Signed-off-by: John Stultz <[email protected]>
Signed-off-by: Sumit Semwal <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

show more ...