linux-stable.git/drivers/dma-buf, branch v4.12.7

dma-buf: Rename dma-ops to prevent conflict with kunmap_atomic macro

2017-04-20T08:17:46+00:00

Seeing the kunmap_atomic dma_buf_ops share the same name with a macro
in highmem.h, the former can be aliased if any dma-buf user includes
that header.

I'm personally trying to include highmem.h inside scatterlist.h and this
breaks the dma-buf code proper.

Christoph Hellwig suggested [1] renaming it and pushing this patch ASAP.

To maintain consistency I've renamed all four of kmap* and kunmap* to be
map* and unmap*. (Even though only kmap_atomic presently conflicts.)

[1] https://www.spinics.net/lists/target-devel/msg15070.html

Signed-off-by: Logan Gunthorpe 
Reviewed-by: Sinclair Yeh 
Acked-by: Daniel Vetter 
Acked-by: Sumit Semwal 
Signed-off-by: Sumit Semwal 
Link: http://patchwork.freedesktop.org/patch/msgid/1492630570-879-1-git-send-email-logang@deltatee.com

dma-buf: align debugfs output

2017-04-03T16:27:20+00:00

Align the heading with the values output from debugfs.

Signed-off-by: Russell King 
Signed-off-by: Sumit Semwal 
Link: http://patchwork.freedesktop.org/patch/msgid/E1cttOq-0006GX-U7@rmk-PC.armlinux.org.uk

dma-buf: fence debugging

2017-03-31T15:52:22+00:00

Add debugfs output to report shared and exclusive fences on a dma_buf
object.  This produces output such as:

Dma-buf Objects:
size    flags   mode    count   exp_name
08294400        00000000        00000005        00000005        drm
        Exclusive fence: etnaviv 134000.gpu signalled
        Attached Devices:
        gpu-subsystem
Total 1 devices attached

Total 1 objects, 8294400 bytes

Signed-off-by: Russell King 
Reviewed-by: Christian König 
Signed-off-by: Gustavo Padovan 
Link: http://patchwork.freedesktop.org/patch/msgid/E1cttMI-00068z-3X@rmk-PC.armlinux.org.uk

dma-fence: add dma_fence_match_context helper

2017-03-17T18:21:36+00:00

Add a helper to check if all fences in a fence array are from a given
context. For convenience, the function can also handle being given a
non-array fence.

Signed-off-by: Philipp Zabel 
Reviewed-by: Gustavo Padovan 
Acked-by: Sumit Semwal 
Signed-off-by: Sumit Semwal 
Link: http://patchwork.freedesktop.org/patch/msgid/1489768492-25190-1-git-send-email-p.zabel@pengutronix.de

Merge tag 'doc-4.11-images' of git://git.lwn.net/linux into drm-misc-next

2017-03-14T14:07:33+00:00

Pointer for Markus's image conversion work.

We need this so we can merge all the pretty drm graphs for 4.12.

Signed-off-by: Daniel Vetter

sched/headers: Prepare to move signal wakeup & sigpending methods from into

2017-03-02T07:42:32+00:00

Fix up affected files that include this signal functionality via sched.h.

Acked-by: Linus Torvalds 
Cc: Mike Galbraith 
Cc: Peter Zijlstra 
Cc: Thomas Gleixner 
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar

dma-buf: add support for compat ioctl

2017-02-27T11:53:47+00:00

Add compat ioctl support to dma-buf. This lets one to use DMA_BUF_IOCTL_SYNC
ioctl from 32bit application on 64bit kernel. Data structures for both 32
and 64bit modes are same, so there is no need for additional translation
layer.

Signed-off-by: Marek Szyprowski 
Reviewed-by: Christian König 
Acked-by: Daniel Vetter 
Signed-off-by: Sumit Semwal 
Link: http://patchwork.freedesktop.org/patch/msgid/1487683261-2655-1-git-send-email-m.szyprowski@samsung.com

dma-buf/dma-fence: improve doc for dma_fence_add_callback()

2017-02-16T04:28:02+00:00

Document return values for this function.

Signed-off-by: Gustavo Padovan 
Reviewed-by: Chris Wilson 
Signed-off-by: Sumit Semwal 
Link: http://patchwork.freedesktop.org/patch/msgid/20170215175725.6692-1-gustavo@padovan.org

dma/fence: Export enable-signaling tracepoint for emission by drivers

2017-01-27T17:24:44+00:00

Currently this tracepoint is solely used by dma_fence_enable_sw_signaling,
however I have a need to manually perform the hw enabling of the
signaling and would like to emit this tracepoint for completeness.

Signed-off-by: Chris Wilson 
Cc: Sumit Semwal 
Cc: Daniel Vetter 
Acked-by: Sumit Semwal 
Signed-off-by: Gustavo Padovan 
Link: http://patchwork.freedesktop.org/patch/msgid/20170124115758.31353-1-chris@chris-wilson.co.uk

dma-fence: Introduce drm_fence_set_error() helper

2017-01-09T15:43:49+00:00

The dma_fence.error field (formerly known as dma_fence.status) is an
optional field that may be set by drivers before calling
dma_fence_signal(). The field can be used to indicate that the fence was
completed in err rather than with success, and is visible to other
consumers of the fence and to userspace via sync_file.

This patch renames the field from status to error so that its meaning is
hopefully more clear (and distinct from dma_fence_get_status() which is
a composite between the error state and signal state) and adds a helper
that validates the preconditions of when it is suitable to adjust the
error field.

Signed-off-by: Chris Wilson 
Reviewed-by: Daniel Vetter 
Reviewed-by: Sumit Semwal 
Signed-off-by: Sumit Semwal 
Link: http://patchwork.freedesktop.org/patch/msgid/20170104141222.6992-3-chris@chris-wilson.co.uk