linux.git/drivers/dma-buf/Kconfig, branch v5.6

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

2019-12-11T05:43:36+00:00

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 
Cc: Benjamin Gaignard 
Cc: Sumit Semwal 
Cc: Liam Mark 
Cc: Pratik Patel 
Cc: Brian Starkey 
Cc: Vincent Donnefort 
Cc: Sudipto Paul 
Cc: Andrew F. Davis 
Cc: Christoph Hellwig 
Cc: Chenbo Feng 
Cc: Alistair Strachan 
Cc: Hridya Valsaraju 
Cc: Sandeep Patil 
Cc: Hillf Danton 
Cc: Dave Airlie 
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Benjamin Gaignard 
Reviewed-by: Brian Starkey 
Acked-by: Sandeep Patil 
Acked-by: Laura Abbott 
Tested-by: Ayan Kumar Halder 
Signed-off-by: John Stultz 
Signed-off-by: Sumit Semwal 
Link: https://patchwork.freedesktop.org/patch/msgid/20191203172641.66642-4-john.stultz@linaro.org

dma-buf: Add dma-buf heaps framework

2019-12-11T05:43:33+00:00

This framework allows a unified userspace interface for dma-buf
exporters, allowing userland to allocate specific types of memory
for use in dma-buf sharing.

Each heap is given its own device node, which a user can allocate
a dma-buf fd from using the DMA_HEAP_IOC_ALLOC.

This code is an evoluiton of the Android ION implementation,
and a big thanks is due to its authors/maintainers over time
for their effort:
  Rebecca Schultz Zavin, Colin Cross, Benjamin Gaignard,
  Laura Abbott, and many other contributors!

Cc: Laura Abbott 
Cc: Benjamin Gaignard 
Cc: Sumit Semwal 
Cc: Liam Mark 
Cc: Pratik Patel 
Cc: Brian Starkey 
Cc: Vincent Donnefort 
Cc: Sudipto Paul 
Cc: Andrew F. Davis 
Cc: Christoph Hellwig 
Cc: Chenbo Feng 
Cc: Alistair Strachan 
Cc: Hridya Valsaraju 
Cc: Sandeep Patil 
Cc: Hillf Danton 
Cc: Dave Airlie 
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Brian Starkey 
Acked-by: Sandeep Patil 
Signed-off-by: Andrew F. Davis 
Signed-off-by: John Stultz 
Signed-off-by: Sumit Semwal 
Link: https://patchwork.freedesktop.org/patch/msgid/20191203172641.66642-2-john.stultz@linaro.org

Revert "dma-buf: Add dma-buf heaps framework"

2019-10-30T20:41:49+00:00

This reverts commit a69b0e855d3fd278ff6f09a23e1edf929538e304.

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: a69b0e855d3f ("dma-buf: Add dma-buf heaps framework")
Cc: Laura Abbott 
Cc: Benjamin Gaignard 
Cc: Sumit Semwal 
Cc: Liam Mark 
Cc: Pratik Patel 
Cc: Brian Starkey 
Cc: Vincent Donnefort 
Cc: Sudipto Paul 
Cc: Andrew F. Davis 
Cc: Christoph Hellwig 
Cc: Chenbo Feng 
Cc: Alistair Strachan 
Cc: Hridya Valsaraju 
Cc: Hillf Danton 
Cc: dri-devel@lists.freedesktop.org
Cc: Brian Starkey 
Cc: John Stultz 
Cc: Mauro Carvalho Chehab 
Cc: "David S. Miller" 
Cc: Greg Kroah-Hartman 
Cc: Rob Herring 
Cc: Jonathan Cameron 
Cc: "Paul E. McKenney" 
Cc: Sean Paul 
Cc: "Andrew F. Davis" 
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Acked-by: David Airlie 
Signed-off-by: Sean Paul 
Link: https://patchwork.freedesktop.org/patch/msgid/20191030203003.101156-6-sean@poorly.run

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

2019-10-30T20:41:33+00:00

This reverts commit 47a32f9c12266d450b92089148c6039591bd9909.

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: 47a32f9c1226 ("dma-buf: heaps: Add system heap to dmabuf heaps")
Cc: Laura Abbott 
Cc: Benjamin Gaignard 
Cc: Sumit Semwal 
Cc: Liam Mark 
Cc: Pratik Patel 
Cc: Brian Starkey 
Cc: Vincent Donnefort 
Cc: Sudipto Paul 
Cc: Andrew F. Davis 
Cc: Christoph Hellwig 
Cc: Chenbo Feng 
Cc: Alistair Strachan 
Cc: Hridya Valsaraju 
Cc: Hillf Danton 
Cc: dri-devel@lists.freedesktop.org
Cc: Brian Starkey 
Cc: John Stultz 
Cc: "Andrew F. Davis" 
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Acked-by: David Airlie 
Signed-off-by: Sean Paul 
Link: https://patchwork.freedesktop.org/patch/msgid/20191030203003.101156-4-sean@poorly.run

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

2019-10-25T11:31:48+00:00

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 
Cc: Benjamin Gaignard 
Cc: Sumit Semwal 
Cc: Liam Mark 
Cc: Pratik Patel 
Cc: Brian Starkey 
Cc: Vincent Donnefort 
Cc: Sudipto Paul 
Cc: Andrew F. Davis 
Cc: Christoph Hellwig 
Cc: Chenbo Feng 
Cc: Alistair Strachan 
Cc: Hridya Valsaraju 
Cc: Hillf Danton 
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Benjamin Gaignard 
Reviewed-by: Brian Starkey 
Acked-by: Laura Abbott 
Tested-by: Ayan Kumar Halder 
Signed-off-by: John Stultz 
Signed-off-by: Sumit Semwal 
Link: https://patchwork.freedesktop.org/patch/msgid/20191021190310.85221-4-john.stultz@linaro.org

dma-buf: Add dma-buf heaps framework

2019-10-25T11:31:45+00:00

This framework allows a unified userspace interface for dma-buf
exporters, allowing userland to allocate specific types of memory
for use in dma-buf sharing.

Each heap is given its own device node, which a user can allocate
a dma-buf fd from using the DMA_HEAP_IOC_ALLOC.

This code is an evoluiton of the Android ION implementation,
and a big thanks is due to its authors/maintainers over time
for their effort:
  Rebecca Schultz Zavin, Colin Cross, Benjamin Gaignard,
  Laura Abbott, and many other contributors!

Cc: Laura Abbott 
Cc: Benjamin Gaignard 
Cc: Sumit Semwal 
Cc: Liam Mark 
Cc: Pratik Patel 
Cc: Brian Starkey 
Cc: Vincent Donnefort 
Cc: Sudipto Paul 
Cc: Andrew F. Davis 
Cc: Christoph Hellwig 
Cc: Chenbo Feng 
Cc: Alistair Strachan 
Cc: Hridya Valsaraju 
Cc: Hillf Danton 
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Benjamin Gaignard 
Reviewed-by: Brian Starkey 
Acked-by: Laura Abbott 
Tested-by: Ayan Kumar Halder 
Signed-off-by: Andrew F. Davis 
Signed-off-by: John Stultz 
Signed-off-by: Sumit Semwal 
Link: https://patchwork.freedesktop.org/patch/msgid/20191021190310.85221-2-john.stultz@linaro.org

dma-buf: Introduce selftesting framework

2019-08-19T17:01:34+00:00

In light of recent review slip ups, the absence of a suite of tests for
dma-buf became apparent. Given the current plethora of testing
frameworks, opt for one already in use by Intel's CI and so allow easy
hook up into igt.

We introduce a new module that when loaded will execute the list of
selftests and their subtest. The names of the selftests are put into the
modinfo as parameters so that igt can identify each, and run them
independently, principally for ease of error reporting.

Signed-off-by: Chris Wilson 
Cc: Daniel Vetter 
Cc: Tomi Sarvela 
Acked-by: Daniel Vetter 
Link: https://patchwork.freedesktop.org/patch/msgid/20190819095928.32091-1-chris@chris-wilson.co.uk

docs: driver-api: add a series of orphaned documents

2019-07-15T14:03:02+00:00

There are lots of documents under Documentation/*.txt and a few other
orphan documents elsehwere that belong to the driver-API book.

Move them to their right place.

Reviewed-by: Cornelia Huck  # vfio-related parts
Acked-by: Logan Gunthorpe  # switchtec
Signed-off-by: Mauro Carvalho Chehab

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which:

 - Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman

Make anon_inodes unconditional

2019-04-19T12:03:11+00:00

Make the anon_inodes facility unconditional so that it can be used by core
VFS code and pidfd code.

Signed-off-by: David Howells 
Signed-off-by: Al Viro 
[christian@brauner.io: adapt commit message to mention pidfds]
Signed-off-by: Christian Brauner