linux.git/drivers/dma-buf/Kconfig, branch v5.8

treewide: replace '---help---' in Kconfig files with 'help'

2020-06-13T16:57:21+00:00

Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over
'---help---'"), the number of '---help---' has been gradually
decreasing, but there are still more than 2400 instances.

This commit finishes the conversion. While I touched the lines,
I also fixed the indentation.

There are a variety of indentation styles found.

  a) 4 spaces + '---help---'
  b) 7 spaces + '---help---'
  c) 8 spaces + '---help---'
  d) 1 space + 1 tab + '---help---'
  e) 1 tab + '---help---'    (correct indentation)
  f) 1 tab + 1 space + '---help---'
  g) 1 tab + 2 spaces + '---help---'

In order to convert all of them to 1 tab + 'help', I ran the
following commend:

  $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/'

Signed-off-by: Masahiro Yamada

dma-buf: Improve CONFIG_DMABUF_MOVE_NOTIFY help text

2020-03-25T18:36:46+00:00

Improve the help text for the CONFIG_DMABUF_MOVE_NOTIFY symbol by:
  1. Removing duplicated single quotes,
  2. Adding a missing subject,
  3. Fixing a misspelling of "yet",
  4. Wrapping long lines.

Fixes: bb42df4662a44765 ("dma-buf: add dynamic DMA-buf handling v15")
Reviewed-by: Christian König 
Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Alex Deucher 
Link: https://patchwork.freedesktop.org/patch/msgid/20200324125442.21983-1-geert+renesas@glider.be

dma-buf: add dynamic DMA-buf handling v15

2020-02-27T13:58:00+00:00

On the exporter side we add optional explicit pinning callbacks. Which are
called when the importer doesn't implement dynamic handling, move notification
or need the DMA-buf locked in place for its use case.

On the importer side we add an optional move_notify callback. This callback is
used by the exporter to inform the importers that their mappings should be
destroyed as soon as possible.

This allows the exporter to provide the mappings without the need to pin
the backing store.

v2: don't try to invalidate mappings when the callback is NULL,
    lock the reservation obj while using the attachments,
    add helper to set the callback
v3: move flag for invalidation support into the DMA-buf,
    use new attach_info structure to set the callback
v4: use importer_priv field instead of mangling exporter priv.
v5: drop invalidation_supported flag
v6: squash together with pin/unpin changes
v7: pin/unpin takes an attachment now
v8: nuke dma_buf_attachment_(map|unmap)_locked,
    everything is now handled backward compatible
v9: always cache when export/importer don't agree on dynamic handling
v10: minimal style cleanup
v11: drop automatically re-entry avoidance
v12: rename callback to move_notify
v13: add might_lock in appropriate places
v14: rebase on separated locking change
v15: add EXPERIMENTAL flag, some more code comments

Signed-off-by: Christian König 
Reviewed-by: Daniel Vetter 
Link: https://patchwork.freedesktop.org/patch/353993/?series=73646&rev=1

dma-buf: Fix a typo in Kconfig

2020-02-17T09:27:25+00:00

A 'h' ismissing in' syncronization'

Signed-off-by: Christophe JAILLET 
Signed-off-by: Daniel Vetter 
Link: https://patchwork.freedesktop.org/patch/msgid/20200216114708.20583-1-christophe.jaillet@wanadoo.fr

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