Commit graph

162 commits

Author SHA1 Message Date
Gerd Hoffmann
5c074eeabb udmabuf: set read/write flag when exporting
Otherwise, mmap fails when done with PROT_WRITE.

Suggested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
Tested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20181114122029.16766-1-kraxel@redhat.com
2018-11-16 08:50:53 +01:00
Dan Carpenter
6f19eb21a2 udmabuf: fix error code in map_udmabuf()
We accidentally forgot to set "ret" on this error path so it means we
return NULL instead of an error pointer.  The caller checks for NULL and
changes it to an error pointer so it doesn't cause an issue at run time.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20180914065615.GA12043@mwanda
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-09-14 11:44:59 +02:00
Gerd Hoffmann
33f35429fc udmabuf: use sizeof(variable) instead of sizeof(type)
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-13-kraxel@redhat.com
2018-09-12 08:21:33 +02:00
Gerd Hoffmann
7b26e4e211 udmabuf: drop WARN_ON() check.
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-12-kraxel@redhat.com
2018-09-12 08:21:32 +02:00
Gerd Hoffmann
52499d9cdd udmabuf: use ENOTTY for invalid ioctls
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-11-kraxel@redhat.com
2018-09-12 08:21:32 +02:00
Gerd Hoffmann
7a1c67d780 udmabuf: use EBADFD in case we didn't got a memfd
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-10-kraxel@redhat.com
2018-09-12 08:21:31 +02:00
Gerd Hoffmann
0d17455ca8 udmabuf: improve udmabuf_create error handling
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-9-kraxel@redhat.com
2018-09-12 08:21:31 +02:00
Gerd Hoffmann
dc4716d751 udmabuf: rework limits
Create variable for the list length limit.  Serves as documentation,
also allows to make it a module parameter if needed.

Also add a total size limit.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-8-kraxel@redhat.com
2018-09-12 08:21:30 +02:00
Gerd Hoffmann
68d2f70efe udmabuf: add MEMFD_CREATE dependency
udmabuf builds without it, but if userspace can not create memfd
handles in the first place it is rather pointless to include it,
except for test builds.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-7-kraxel@redhat.com
2018-09-12 08:21:30 +02:00
Gerd Hoffmann
dc254553f2 udmabuf: constify udmabuf_create args
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-6-kraxel@redhat.com
2018-09-12 08:21:29 +02:00
Gerd Hoffmann
a34852891b udmabuf: constify udmabuf_ops
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-5-kraxel@redhat.com
2018-09-12 08:21:29 +02:00
Gerd Hoffmann
b35f57c437 udmabuf: use pgoff_t for pagecount
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-4-kraxel@redhat.com
2018-09-12 08:21:28 +02:00
Gerd Hoffmann
a3e722dad0 udmabuf: improve map_udmabuf error handling
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-3-kraxel@redhat.com
2018-09-12 08:21:28 +02:00
Gerd Hoffmann
913965c42c udmabuf: sort headers, drop uapi/ path prefix
Reported-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180911134216.9760-2-kraxel@redhat.com
2018-09-12 08:21:27 +02:00
Gustavo A. R. Silva
683a0e630c dma-buf/udmabuf: Fix NULL pointer dereference in udmabuf_create
There is a potential execution path in which pointer memfd is NULL when
passed as argument to fput(), hence there is a NULL pointer dereference
in fput().

Fix this by null checking *memfd* before calling fput().

Addresses-Coverity-ID: 1473174 ("Explicit null dereferenced")
Fixes: fbb0de7950 ("Add udmabuf misc device")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20180904190749.GA9308@embeddedor.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-09-05 08:28:28 +02:00
Gerd Hoffmann
fbb0de7950 Add udmabuf misc device
A driver to let userspace turn memfd regions into dma-bufs.

Use case:  Allows qemu create dmabufs for the vga framebuffer or
virtio-gpu ressources.  Then they can be passed around to display
those guest things on the host.  To spice client for classic full
framebuffer display, and hopefully some day to wayland server for
seamless guest window display.

qemu test branch:
  https://git.kraxel.org/cgit/qemu/log/?h=sirius/udmabuf

Cc: David Airlie <airlied@linux.ie>
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180827093444.23623-1-kraxel@redhat.com
2018-09-03 13:29:38 +02:00
Chris Wilson
f82aab2d52 dma-buf: Remove requirement for ops->map() from dma_buf_export
Since commit 9ea0dfbf972 ("dma-buf: make map_atomic and map function
pointers optional"), the core provides the no-op functions when map and
map_atomic are not provided, so we no longer need assert that are
supplied by a dma-buf exporter.

Fixes: 09ea0dfbf9 ("dma-buf: make map_atomic and map function pointers optional")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20180807183647.22626-1-chris@chris-wilson.co.uk
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2018-08-10 07:57:46 +02:00
Michel Dänzer
7f43ef9f0d dma-buf: Move BUG_ON from _add_shared_fence to _add_shared_inplace
Fixes the BUG_ON spuriously triggering under the following
circumstances:

* reservation_object_reserve_shared is called with shared_count ==
  shared_max - 1, so obj->staged is freed in preparation of an in-place
  update.

* reservation_object_add_shared_fence is called with the first fence,
  after which shared_count == shared_max.

* reservation_object_add_shared_fence is called with a follow-up fence
  from the same context.

In the second reservation_object_add_shared_fence call, the BUG_ON
triggers. However, nothing bad would happen in
reservation_object_add_shared_inplace, since both fences are from the
same context, so they only occupy a single slot.

Prevent this by moving the BUG_ON to where an overflow would actually
happen (e.g. if a buggy caller didn't call
reservation_object_reserve_shared before).

v2:
* Fix description of breaking scenario (Christian König)
* Add bugzilla reference

Cc: stable@vger.kernel.org
Bugzilla: https://bugs.freedesktop.org/106418
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> # v1
Reviewed-by: Christian König <christian.koenig@amd.com> # v1
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20180704151405.10357-1-michel@daenzer.net
2018-07-16 20:20:37 +05:30
Dave Airlie
a1c3b49523 drm-misc-next for 4.19:
UAPI Changes:
 v3d: add fourcc modicfier for fourcc for the Broadcom UIF format (Eric Anholt)
 
 Cross-subsystem Changes:
 console/fbcon: Add support for deferred console takeover (Hans de Goede)
 
 Core Changes:
 dma-fence clean up, improvements and docs (Daniel Vetter)
 add mask function for crtc, plane, encoder and connector DRM objects(Ville Syrjälä)
 
 Driver Changes:
 pl111: add Nomadik LCDC variant (Linus Walleij)
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Merge tag 'drm-misc-next-2018-07-04' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 4.19:

UAPI Changes:
v3d: add fourcc modicfier for fourcc for the Broadcom UIF format (Eric Anholt)

Cross-subsystem Changes:
console/fbcon: Add support for deferred console takeover (Hans de Goede)

Core Changes:
dma-fence clean up, improvements and docs (Daniel Vetter)
add mask function for crtc, plane, encoder and connector DRM objects(Ville Syrjälä)

Driver Changes:
pl111: add Nomadik LCDC variant (Linus Walleij)

Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180704234641.GA3981@juma
2018-07-06 10:01:56 +10:00
Daniel Vetter
4dd3cdb281 dma-fence: Polish kernel-doc for dma-fence.c
- Intro section that links to how this is exposed to userspace.
- Lots more hyperlinks.
- Minor clarifications and style polish

v2: Add misplaced hunk of kerneldoc from a different patch.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Link: https://patchwork.freedesktop.org/patch/msgid/20180704092909.6599-6-daniel.vetter@ffwll.ch
2018-07-04 12:18:37 +02:00
Daniel Vetter
418cc6ca06 dma-fence: Make ->wait callback optional
Almost everyone uses dma_fence_default_wait.

v2: Also remove the BUG_ON(!ops->wait) (Chris).

Reviewed-by: Christian König <christian.koenig@amd.com> (v1)
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Link: https://patchwork.freedesktop.org/patch/msgid/20180503142603.28513-5-daniel.vetter@ffwll.ch
2018-07-03 13:12:57 +02:00
Thomas Hellstrom
08295b3b5b locking: Implement an algorithm choice for Wound-Wait mutexes
The current Wound-Wait mutex algorithm is actually not Wound-Wait but
Wait-Die. Implement also Wound-Wait as a per-ww-class choice. Wound-Wait
is, contrary to Wait-Die a preemptive algorithm and is known to generate
fewer backoffs. Testing reveals that this is true if the
number of simultaneous contending transactions is small.
As the number of simultaneous contending threads increases, Wait-Wound
becomes inferior to Wait-Die in terms of elapsed time.
Possibly due to the larger number of held locks of sleeping transactions.

Update documentation and callers.

Timings using git://people.freedesktop.org/~thomash/ww_mutex_test
tag patch-18-06-15

Each thread runs 100000 batches of lock / unlock 800 ww mutexes randomly
chosen out of 100000. Four core Intel x86_64:

Algorithm    #threads       Rollbacks  time
Wound-Wait   4              ~100       ~17s.
Wait-Die     4              ~150000    ~19s.
Wound-Wait   16             ~360000    ~109s.
Wait-Die     16             ~450000    ~82s.

Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Kate Stewart <kstewart@linuxfoundation.org>
Cc: Philippe Ombredanne <pombredanne@nexb.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-doc@vger.kernel.org
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Co-authored-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
2018-07-03 09:44:36 +02:00
Daniel Vetter
796422f227 dma-fence: Allow wait_any_timeout for all fences
When this was introduced in

commit a519435a96
Author: Christian König <christian.koenig@amd.com>
Date:   Tue Oct 20 16:34:16 2015 +0200

    dma-buf/fence: add fence_wait_any_timeout function v2

there was a restriction added that this only works if the dma-fence
uses the dma_fence_default_wait hook. Which works for amdgpu, which is
the only caller. Well, until you share some buffers with e.g. i915,
then you get an -EINVAL.

But there's really no reason for this, because all drivers must
support callbacks. The special ->wait hook is only as an optimization;
if the driver needs to create a worker thread for an active callback,
then it can avoid to do that if it knows that there's a process
context available already. So ->wait is just an optimization, just
using the logic in dma_fence_default_wait() should work for all
drivers.

Let's remove this restriction.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180503142603.28513-4-daniel.vetter@ffwll.ch
2018-07-02 10:20:53 +02:00
Daniel Vetter
c701317a3e dma-fence: Make ->enable_signaling optional
Many drivers have a trivial implementation for ->enable_signaling.
Let's make it optional by assuming that signalling is already
available when the callback isn't present.

v2: Don't do the trick to set the ENABLE_SIGNAL_BIT
unconditionally, it results in an expensive spinlock take for
everyone. Instead just check if the callback is present. Suggested by
Maarten.

Also move misplaced kerneldoc hunk to the right patch.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Christian König <christian.koenig@amd.com> (v1)
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Link: https://patchwork.freedesktop.org/patch/msgid/20180504141034.27727-1-daniel.vetter@ffwll.ch
2018-07-02 10:16:33 +02:00
Christian König
f664a52695 dma-buf: remove kmap_atomic interface
Neither used nor correctly implemented anywhere. Just completely remove
the interface.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://patchwork.freedesktop.org/patch/226645/
2018-06-20 15:59:34 +02:00
Christian König
a19741e5e5 dma_buf: remove device parameter from attach callback v2
The device parameter is completely unused because it is available in the
attachment structure as well.

v2: fix kerneldoc as well

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/226643/
2018-06-20 15:59:34 +02:00
Gerd Hoffmann
09ea0dfbf9 dma-buf: make map_atomic and map function pointers optional
So drivers don't need dummy functions just returning NULL.

Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20180529135918.19729-1-kraxel@redhat.com
2018-06-01 08:59:35 +02:00
Ezequiel Garcia
28eff78618 dma-buf: Remove unneeded stubs around sync_debug interfaces
The sync_debug.h header is internal, and only used by
sw_sync.c. Therefore, SW_SYNC is always defined and there
is no need for the stubs. Remove them and make the code
simpler.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180504180037.10661-1-ezequiel@collabora.com
2018-05-07 15:58:07 +02:00
Daniel Vetter
51f170a544 Revert 190c462d5be19ba622a82f5fd0625087c870a1e6..bf3012ada1b2222e770de5c35c1bb16f73b3a01d"
I shouldn't have pushed this, CI was right - I failed to remove the
BUG_ON(!ops->wait);

Reported-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2018-05-03 12:38:39 +02:00
Daniel Vetter
49a53d493e dma-fence: Make ->wait callback optional
Almost everyone uses dma_fence_default_wait.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Link: https://patchwork.freedesktop.org/patch/msgid/20180427061724.28497-6-daniel.vetter@ffwll.ch
2018-05-03 11:49:18 +02:00
Daniel Vetter
90e9965524 dma-fence: Allow wait_any_timeout for all fences
When this was introduced in

commit a519435a96
Author: Christian König <christian.koenig@amd.com>
Date:   Tue Oct 20 16:34:16 2015 +0200

    dma-buf/fence: add fence_wait_any_timeout function v2

there was a restriction added that this only works if the dma-fence
uses the dma_fence_default_wait hook. Which works for amdgpu, which is
the only caller. Well, until you share some buffers with e.g. i915,
then you get an -EINVAL.

But there's really no reason for this, because all drivers must
support callbacks. The special ->wait hook is only as an optimization;
if the driver needs to create a worker thread for an active callback,
then it can avoid to do that if it knows that there's a process
context available already. So ->wait is just an optimization, just
using the logic in dma_fence_default_wait() should work for all
drivers.

Let's remove this restriction.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Cc: Christian König <christian.koenig@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180427061724.28497-5-daniel.vetter@ffwll.ch
2018-05-03 11:49:00 +02:00
Daniel Vetter
95ed01ea97 dma-fence: Make ->enable_signaling optional
Many drivers have a trivial implementation for ->enable_signaling.
Let's make it optional by assuming that signalling is already
available when the callback isn't present.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180427061724.28497-4-daniel.vetter@ffwll.ch
2018-05-03 11:48:22 +02:00
Oded Gabbay
4518cd28d8 dma-fence: add comment for WARN_ON in dma_fence_release()
In dma_fence_release() there is a WARN_ON which could be triggered by
several cases of wrong dma-fence usage. This patch adds a comment to
explain two use-cases to help driver developers that use dma-fence
and trigger that WARN_ON to better understand the reasons for it.

v2: change to a more generic, one-liner comment

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2018-01-29 17:31:40 +02:00
Chris Wilson
b88132b4ab dma-buf/sw_sync: Fix kerneldoc warnings
drivers/dma-buf/sw_sync.c:248: warning: No description found for parameter 'obj'
drivers/dma-buf/sw_sync.c:248: warning: No description found for parameter 'value'
drivers/dma-buf/sw_sync.c:248: warning: Excess function parameter 'parent' description in 'sync_pt_create'
drivers/dma-buf/sw_sync.c:248: warning: Excess function parameter 'inc' description in 'sync_pt_create'

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180208113816.8288-1-chris@chris-wilson.co.uk
2018-02-19 10:50:49 +01:00
Dave Airlie
76ea0f334e drm-misc-next for 4.17:
UAPI Changes:
 - drm/vc4: Expose performance counters to userspace (Boris)
 
 Cross-subsystem Changes:
 - MAINTAINERS: Linus to maintain panel-arm-versatile in -misc (Linus)
 
 Core Changes:
 - Only use swiotlb when necessary (Chunming)
 
 Driver Changes:
 - drm/panel: Add support for ARM Versatile panels (Linus)
 - pl111: Improvements around versatile panel support (Linus)
 
 ----------------------------------------
 Tagged on 2018-02-06:
 drm-misc-next for 4.17:
 
 UAPI Changes:
 - Validate mode flags + type (Ville)
 - Deprecate unused mode flags PIXMUX, BCAST (Ville)
 - Deprecate unused mode types BUILTIN, CRTC_C, CLOCK_C, DEFAULT (Ville)
 
 Cross-subsystem Changes:
 - MAINTAINERS: s/Daniel/Maarten/ for drm-misc (Daniel)
 
 Core Changes:
 - gem: Export gem functions for drivers to use (Samuel)
 - bridge: Introduce bridge timings in drm_bridge (Linus)
 - dma-buf: Allow exclusive fence to be bundled in fence array when
 	   calling reservation_object_get_fences_rcu (Christian)
 - dp: Add training pattern 4 and HBR3 support to dp helpers (Manasi)
 - fourcc: Add alpha bit to formats to avoid driver format LUTs (Maxime)
 - mode: Various cleanups + add new device-wide .mode_valid hook (Ville)
 - atomic: Fix state leak when non-blocking commits fail (Leo)
 	  NOTE: IIRC, this was cross-picked to -fixes so it might fall out
 - crc: Allow polling on the data fd (Maarten)
 
 Driver Changes:
 - bridge/vga-dac: Add THS8134* support (Linus)
 - tinydrm: Various MIPI DBI improvements/cleanups (Noralf)
 - bridge/dw-mipi-dsi: Cleanups + use create_packet helper (Brian)
 - drm/sun4i: Add Display Engine frontend support (Maxime)
 - drm/sun4i: Add zpos support + increase num planes from 2 to 4 (Maxime)
 - various: Use drm_mode_get_hv_timing() to fill plane clip rectangle (Ville)
 - stm: Add 8-bit clut support, add dsi phy v1.31 support, +fixes (Phillipe)
 
 Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
 Cc: Chunming Zhou <david1.zhou@amd.com>
 Cc: Samuel Li <Samuel.Li@amd.com>
 Cc: Linus Walleij <linus.walleij@linaro.org>
 Cc: Noralf Trønnes <noralf@tronnes.org>
 Cc: Brian Norris <briannorris@chromium.org>
 Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
 Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
 Cc: Christian König <christian.koenig@amd.com>
 Cc: Manasi Navare <manasi.d.navare@intel.com>
 Cc: Philippe Cornu <philippe.cornu@st.com>
 Cc: Leo (Sunpeng) Li <sunpeng.li@amd.com>
 Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
 Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
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Merge tag 'drm-misc-next-2018-02-13' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 4.17:

UAPI Changes:
- drm/vc4: Expose performance counters to userspace (Boris)

Cross-subsystem Changes:
- MAINTAINERS: Linus to maintain panel-arm-versatile in -misc (Linus)

Core Changes:
- Only use swiotlb when necessary (Chunming)

Driver Changes:
- drm/panel: Add support for ARM Versatile panels (Linus)
- pl111: Improvements around versatile panel support (Linus)

----------------------------------------
Tagged on 2018-02-06:
drm-misc-next for 4.17:

UAPI Changes:
- Validate mode flags + type (Ville)
- Deprecate unused mode flags PIXMUX, BCAST (Ville)
- Deprecate unused mode types BUILTIN, CRTC_C, CLOCK_C, DEFAULT (Ville)

Cross-subsystem Changes:
- MAINTAINERS: s/Daniel/Maarten/ for drm-misc (Daniel)

Core Changes:
- gem: Export gem functions for drivers to use (Samuel)
- bridge: Introduce bridge timings in drm_bridge (Linus)
- dma-buf: Allow exclusive fence to be bundled in fence array when
	   calling reservation_object_get_fences_rcu (Christian)
- dp: Add training pattern 4 and HBR3 support to dp helpers (Manasi)
- fourcc: Add alpha bit to formats to avoid driver format LUTs (Maxime)
- mode: Various cleanups + add new device-wide .mode_valid hook (Ville)
- atomic: Fix state leak when non-blocking commits fail (Leo)
	  NOTE: IIRC, this was cross-picked to -fixes so it might fall out
- crc: Allow polling on the data fd (Maarten)

Driver Changes:
- bridge/vga-dac: Add THS8134* support (Linus)
- tinydrm: Various MIPI DBI improvements/cleanups (Noralf)
- bridge/dw-mipi-dsi: Cleanups + use create_packet helper (Brian)
- drm/sun4i: Add Display Engine frontend support (Maxime)
- drm/sun4i: Add zpos support + increase num planes from 2 to 4 (Maxime)
- various: Use drm_mode_get_hv_timing() to fill plane clip rectangle (Ville)
- stm: Add 8-bit clut support, add dsi phy v1.31 support, +fixes (Phillipe)

Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Chunming Zhou <david1.zhou@amd.com>
Cc: Samuel Li <Samuel.Li@amd.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Noralf Trønnes <noralf@tronnes.org>
Cc: Brian Norris <briannorris@chromium.org>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Philippe Cornu <philippe.cornu@st.com>
Cc: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

* tag 'drm-misc-next-2018-02-13' of git://anongit.freedesktop.org/drm/drm-misc: (115 commits)
  drm/radeon: only enable swiotlb path when need v2
  drm/amdgpu: only enable swiotlb alloc when need v2
  drm: add func to get max iomem address v2
  drm/vc4: Expose performance counters to userspace
  drm: Print the pid when debug logging an ioctl error.
  drm/stm: ltdc: remove non-alpha color formats on layer 2 for older hw
  drm/stm: ltdc: add non-alpha color formats
  drm/bridge/synopsys: dsi: Add 1.31 version support
  drm/bridge/synopsys: dsi: Add read feature
  drm/pl111: Support multiple endpoints on the CLCD
  drm/pl111: Support variants with broken VBLANK
  drm/pl111: Support variants with broken clock divider
  drm/pl111: Handle the Versatile RGB/BGR565 mode
  drm/pl111: Properly detect the ARM PL110 variants
  drm/panel: Add support for ARM Versatile panels
  drm/panel: Device tree bindings for ARM Versatile panels
  drm/bridge: Rename argument from crtc to bridge
  drm/crc: Add support for polling on the data fd.
  drm/sun4i: Use drm_mode_get_hv_timing() to populate plane clip rectangle
  drm/rcar-du: Use drm_mode_get_hv_timing() to populate plane clip rectangle
  ...
2018-02-16 09:29:27 +10:00
Linus Torvalds
a9a08845e9 vfs: do bulk POLL* -> EPOLL* replacement
This is the mindless scripted replacement of kernel use of POLL*
variables as described by Al, done by this script:

    for V in IN OUT PRI ERR RDNORM RDBAND WRNORM WRBAND HUP RDHUP NVAL MSG; do
        L=`git grep -l -w POLL$V | grep -v '^t' | grep -v /um/ | grep -v '^sa' | grep -v '/poll.h$'|grep -v '^D'`
        for f in $L; do sed -i "-es/^\([^\"]*\)\(\<POLL$V\>\)/\\1E\\2/" $f; done
    done

with de-mangling cleanups yet to come.

NOTE! On almost all architectures, the EPOLL* constants have the same
values as the POLL* constants do.  But they keyword here is "almost".
For various bad reasons they aren't the same, and epoll() doesn't
actually work quite correctly in some cases due to this on Sparc et al.

The next patch from Al will sort out the final differences, and we
should be all done.

Scripted-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-02-11 14:34:03 -08:00
Linus Torvalds
4bf772b146 drm/graphics pull request for v4.16-rc1
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Merge tag 'drm-for-v4.16' of git://people.freedesktop.org/~airlied/linux

Pull drm updates from Dave Airlie:
 "This seems to have been a comparatively quieter merge window, I assume
  due to holidays etc. The "biggest" change is AMD header cleanups, which
  merge/remove a bunch of them. The AMD gpu scheduler is now being made generic
  with the etnaviv driver wanting to reuse the code, hopefully other drivers
  can go in the same direction.

  Otherwise it's the usual lots of stuff in i915/amdgpu, not so much stuff
  elsewhere.

  Core:
   - Add .last_close and .output_poll_changed helpers to reduce driver footprints
   - Fix plane clipping
   - Improved debug printing support
   - Add panel orientation property
   - Update edid derived properties at edid setting
   - Reduction in fbdev driver footprint
   - Move amdgpu scheduler into core for other drivers to use.

  i915:
   - Selftest and IGT improvements
   - Fast boot prep work on IPS, pipe config
   - HW workarounds for Cannonlake, Geminilake
   - Cannonlake clock and HDMI2.0 fixes
   - GPU cache invalidation and context switch improvements
   - Display planes cleanup
   - New PMU interface for perf queries
   - New firmware support for KBL/SKL
   - Geminilake HW workaround for perforamce
   - Coffeelake stolen memory improvements
   - GPU reset robustness work
   - Cannonlake horizontal plane flipping
   - GVT work

  amdgpu/radeon:
   - RV and Vega header file cleanups (lots of lines gone!)
   - TTM operation context support
   - 48-bit GPUVM support for Vega/RV
   - ECC support for Vega
   - Resizeable BAR support
   - Multi-display sync support
   - Enable swapout for reserved BOs during allocation
   - S3 fixes on Raven
   - GPU reset cleanup and fixes
   - 2+1 level GPU page table

  amdkfd:
   - GFX7/8 SDMA user queues support
   - Hardware scheduling for multiple processes
   - dGPU prep work

  rcar:
   - Added R8A7743/5 support
   - System suspend/resume support

  sun4i:
   - Multi-plane support for YUV formats
   - A83T and LVDS support

  msm:
   - Devfreq support for GPU

  tegra:
   - Prep work for adding Tegra186 support
   - Tegra186 HDMI support
   - HDMI2.0 and zpos support by using generic helpers

  tilcdc:
   - Misc fixes

  omapdrm:
   - Support memory bandwidth limits
   - DSI command mode panel cleanups
   - DMM error handling

  exynos:
   - drop the old IPP subdriver.

  etnaviv:
   - Occlusion query fixes
   - Job handling fixes
   - Prep work for hooking in gpu scheduler

  armada:
   - Move closer to atomic modesetting
   - Allow disabling primary plane if overlay is full screen

  imx:
   - Format modifier support
   - Add tile prefetch to PRE
   - Runtime PM support for PRG

  ast:
   - fix LUT loading"

* tag 'drm-for-v4.16' of git://people.freedesktop.org/~airlied/linux: (1471 commits)
  drm/ast: Load lut in crtc_commit
  drm: Check for lessee in DROP_MASTER ioctl
  drm: fix gpu scheduler link order
  drm/amd/display: Demote error print to debug print when ATOM impl missing
  dma-buf: fix reservation_object_wait_timeout_rcu once more v2
  drm/amdgpu: Avoid leaking PM domain on driver unbind (v2)
  drm/amd/amdgpu: Add Polaris version check
  drm/amdgpu: Reenable manual GPU reset from sysfs
  drm/amdgpu: disable MMHUB power gating on raven
  drm/ttm: Don't unreserve swapped BOs that were previously reserved
  drm/ttm: Don't add swapped BOs to swap-LRU list
  drm/amdgpu: only check for ECC on Vega10
  drm/amd/powerplay: Fix smu_table_entry.handle type
  drm/ttm: add VADDR_FLAG_UPDATED_COUNT to correctly update dma_page global count
  drm: Fix PANEL_ORIENTATION_QUIRKS breaking the Kconfig DRM menuconfig
  drm/radeon: fill in rb backend map on evergreen/ni.
  drm/amdgpu/gfx9: fix ngg enablement to clear gds reserved memory (v2)
  drm/ttm: only free pages rather than update global memory count together
  drm/amdgpu: fix CPU based VM updates
  drm/amdgpu: fix typo in amdgpu_vce_validate_bo
  ...
2018-02-01 17:48:47 -08:00
Shawn Guo
e56a0fbd52 dma-buf/sw_sync: fix document of sw_sync_create_fence_data
The structure should really be sw_sync_create_fence_data rather than
sw_sync_ioctl_create_fence which is the function name.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1515988079-8677-1-git-send-email-shawn.guo@linaro.org
2018-01-30 18:05:25 +01:00
Christian König
a35f2f34b5 dma-buf: make returning the exclusive fence optional
Change reservation_object_get_fences_rcu to make the exclusive fence
pointer optional.

If not specified the exclusive fence is put into the fence array as
well.

This is helpful for a couple of cases where we need all fences in a
single array.

Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180110125341.3618-1-christian.koenig@amd.com
2018-01-23 12:14:26 -05:00
Christian König
5bffee867d dma-buf: fix reservation_object_wait_timeout_rcu once more v2
We need to set shared_count even if we already have a fence to wait for.

v2: init i to -1 as well

Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: stable@vger.kernel.org
Tested-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180122200003.6665-1-christian.koenig@amd.com
2018-01-23 10:46:39 -05:00
Dave Airlie
2c1c55cb75 Merge tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
Cross-subsystem Changes:

- device tree doc for the Mitsubishi AA070MC01 and Tianma TM070RVHG71
panels (Lukasz Majewski) and for a 2nd endpoint on stm32 (Philippe Cornu)

Core Changes:

The most important changes are:

- Add drm_driver .last_close and .output_poll_changed helpers to reduce
fbdev emulation footprint in drivers (Noralf)
- Fix plane clipping in core and for vmwgfx (Ville)

Then we have a bunch of of improvement for print and debug such as the
addition of a framebuffer debugfs file. ELD connector, HDMI and
improvements.  And a bunch of misc improvements, clean ups and style
changes and doc updates

[airlied: drop eld bits from amdgpu_dm]

Driver Changes:

- sii8620: filter unsupported modes and add DVI mode support (Maciej Purski)
- rockchip: analogix_dp: Remove unnecessary init code (Jeffy Chen)
- virtio, cirrus: add fb create_handle support to enable screenshots(Lepton Wu)
- virtio: replace reference/unreference with get/put (Aastha Gupta)
- vc4, gma500: Convert timers to use timer_setup() (Kees Cook)
- vc4: Reject HDMI modes with too high of clocks (Eric)
- vc4: Add support for more pixel formats (Dave Stevenson)
- stm: dsi: Rename driver name to "stm32-display-dsi" (Philippe Cornu)
- stm: ltdc: add a 2nd endpoint (Philippe Cornu)
- via: use monotonic time for VIA_WAIT_IRQ (Arnd Bergmann)

* tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc: (96 commits)
  drm/bridge: tc358767: add copyright lines
  MAINTAINERS: change maintainer for Rockchip drm drivers
  drm/vblank: Fix vblank timestamp debugs
  drm/via: use monotonic time for VIA_WAIT_IRQ
  dma-buf: Fix ifnullfree.cocci warnings
  drm/printer: Add drm_vprintf()
  drm/edid: Allow HDMI infoframe without VIC or S3D
  video/hdmi: Allow "empty" HDMI infoframes
  dma-buf/fence: Fix lock inversion within dma-fence-array
  drm/sti: Handle return value of platform_get_irq_byname
  drm/vc4: Add support for NV21 and NV61.
  drm/vc4: Use .pixel_order instead of custom .flip_cbcr
  drm/vc4: Add support for DRM_FORMAT_RGB888 and DRM_FORMAT_BGR888
  drm: Move drm_plane_helper_check_state() into drm_atomic_helper.c
  drm: Check crtc_state->enable rather than crtc->enabled in drm_plane_helper_check_state()
  drm/vmwgfx: Try to fix plane clipping
  drm/vmwgfx: Use drm_plane_helper_check_state()
  drm/vmwgfx: Remove bogus crtc coords vs fb size check
  gpu: gma500: remove unneeded DRIVER_LICENSE #define
  drm: don't link DP aux i2c adapter to the hardware device node
  ...
2017-12-04 05:42:49 +10:00
Al Viro
afc9a42b74 the rest of drivers/*: annotate ->poll() instances
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-11-28 11:06:58 -05:00
Al Viro
0169943775 annotate poll_table_struct ->_key
Only POLL... bitmaps ever end up there and their only use is checking
for POLL... bits in them.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2017-11-27 16:19:54 -05:00
Vasyl Gomonovych
298b6a815b dma-buf: Fix ifnullfree.cocci warnings
NULL check before some freeing functions is not needed.
drivers/dma-buf/dma-buf.c:1183:2-26: WARNING: NULL check before freeing debugfs_remove_recursive
Generated by: scripts/coccinelle/free/ifnullfree.cocci

Signed-off-by: Vasyl Gomonovych <gomonovych@gmail.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1511364161-6074-1-git-send-email-gomonovych@gmail.com
2017-11-23 16:15:13 +05:30
Chris Wilson
03e4e0a9e0 dma-buf/fence: Fix lock inversion within dma-fence-array
Ages ago Rob Clark noted,

"Currently with fence-array, we have a potential deadlock situation.  If
we fence_add_callback() on an array-fence, the array-fence's lock is
acquired first, and in it's ->enable_signaling() callback, it will install
cbs on it's array-member fences, so the array-member's lock is acquired
second.

But in the signal path, the array-member's lock is acquired first, and
the array-fence's lock acquired second."

Rob proposed either extensive changes to dma-fence to unnest the
fence-array signaling, or to defer the signaling onto a workqueue. This
is a more refined version of the later, that should keep the latency
of the fence signaling to a minimum by using an irq-work, which is
executed asap.

Reported-by: Rob Clark <robdclark@gmail.com>
Suggested-by: Rob Clark <robdclark@gmail.com>
References: 1476635975-21981-1-git-send-email-robdclark@gmail.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Christian König <christian.koenig@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Sumit Semwal <sumit.semwal@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20171114162719.30958-1-chris@chris-wilson.co.uk
2017-11-21 22:37:05 +05:30
Daniel Vetter
70c5f93669 Merge airlied/drm-next into drm-misc-next
Bake in the conflict between the drm_print.h extraction and the
addition of DRM_DEBUG_LEASES since we lost it a few too many times.

Also fix a new use of drm_plane_helper_check_state in msm to follow
Ville's conversion in

commit a01cb8ba3f
Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date:   Wed Nov 1 22:16:19 2017 +0200

    drm: Move drm_plane_helper_check_state() into drm_atomic_helper.c

Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2017-11-21 14:17:56 +01:00
Linus Torvalds
2dcd9c71c1 Tracing updates for 4.15:
- Now allow module init functions to be traced
 
  - Clean up some unused or not used by config events (saves space)
 
  - Clean up of trace histogram code
 
  - Add support for preempt and interrupt enabled/disable events
 
  - Other various clean ups
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Merge tag 'trace-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing updates from

 - allow module init functions to be traced

 - clean up some unused or not used by config events (saves space)

 - clean up of trace histogram code

 - add support for preempt and interrupt enabled/disable events

 - other various clean ups

* tag 'trace-v4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: (30 commits)
  tracing, thermal: Hide cpu cooling trace events when not in use
  tracing, thermal: Hide devfreq trace events when not in use
  ftrace: Kill FTRACE_OPS_FL_PER_CPU
  perf/ftrace: Small cleanup
  perf/ftrace: Fix function trace events
  perf/ftrace: Revert ("perf/ftrace: Fix double traces of perf on ftrace:function")
  tracing, dma-buf: Remove unused trace event dma_fence_annotate_wait_on
  tracing, memcg, vmscan: Hide trace events when not in use
  tracing/xen: Hide events that are not used when X86_PAE is not defined
  tracing: mark trace_test_buffer as __maybe_unused
  printk: Remove superfluous memory barriers from printk_safe
  ftrace: Clear hashes of stale ips of init memory
  tracing: Add support for preempt and irq enable/disable events
  tracing: Prepare to add preempt and irq trace events
  ftrace/kallsyms: Have /proc/kallsyms show saved mod init functions
  ftrace: Add freeing algorithm to free ftrace_mod_maps
  ftrace: Save module init functions kallsyms symbols for tracing
  ftrace: Allow module init functions to be traced
  ftrace: Add a ftrace_free_mem() function for modules to use
  tracing: Reimplement log2
  ...
2017-11-17 14:58:01 -08:00
Linus Torvalds
e60e1ee606 main drm pull request for v4.15
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Merge tag 'drm-for-v4.15' of git://people.freedesktop.org/~airlied/linux

Pull drm updates from Dave Airlie:
 "This is the main drm pull request for v4.15.

  Core:
   - Atomic object lifetime fixes
   - Atomic iterator improvements
   - Sparse/smatch fixes
   - Legacy kms ioctls to be interruptible
   - EDID override improvements
   - fb/gem helper cleanups
   - Simple outreachy patches
   - Documentation improvements
   - Fix dma-buf rcu races
   - DRM mode object leasing for improving VR use cases.
   - vgaarb improvements for non-x86 platforms.

  New driver:
   - tve200: Faraday Technology TVE200 block.

     This "TV Encoder" encodes a ITU-T BT.656 stream and can be found in
     the StorLink SL3516 (later Cortina Systems CS3516) as well as the
     Grain Media GM8180.

  New bridges:
   - SiI9234 support

  New panels:
   - S6E63J0X03, OTM8009A, Seiko 43WVF1G, 7" rpi touch panel, Toshiba
     LT089AC19000, Innolux AT043TN24

  i915:
   - Remove Coffeelake from alpha support
   - Cannonlake workarounds
   - Infoframe refactoring for DisplayPort
   - VBT updates
   - DisplayPort vswing/emph/buffer translation refactoring
   - CCS fixes
   - Restore GPU clock boost on missed vblanks
   - Scatter list updates for userptr allocations
   - Gen9+ transition watermarks
   - Display IPC (Isochronous Priority Control)
   - Private PAT management
   - GVT: improved error handling and pci config sanitizing
   - Execlist refactoring
   - Transparent Huge Page support
   - User defined priorities support
   - HuC/GuC firmware refactoring
   - DP MST fixes
   - eDP power sequencing fixes
   - Use RCU instead of stop_machine
   - PSR state tracking support
   - Eviction fixes
   - BDW DP aux channel timeout fixes
   - LSPCON fixes
   - Cannonlake PLL fixes

  amdgpu:
   - Per VM BO support
   - Powerplay cleanups
   - CI powerplay support
   - PASID mgr for kfd
   - SR-IOV fixes
   - initial GPU reset for vega10
   - Prime mmap support
   - TTM updates
   - Clock query interface for Raven
   - Fence to handle ioctl
   - UVD encode ring support on Polaris
   - Transparent huge page DMA support
   - Compute LRU pipe tweaks
   - BO flag to allow buffers to opt out of implicit sync
   - CTX priority setting API
   - VRAM lost infrastructure plumbing

  qxl:
   - fix flicker since atomic rework

  amdkfd:
   - Further improvements from internal AMD tree
   - Usermode events
   - Drop radeon support

  nouveau:
   - Pascal temperature sensor support
   - Improved BAR2 handling
   - MMU rework to support Pascal MMU

  exynos:
   - Improved HDMI/mixer support
   - HDMI audio interface support

  tegra:
   - Prep work for tegra186
   - Cleanup/fixes

  msm:
   - Preemption support for a5xx
   - Display fixes for 8x96 (snapdragon 820)
   - Async cursor plane fixes
   - FW loading rework
   - GPU debugging improvements

  vc4:
   - Prep for DSI panels
   - fix T-format tiling scanout
   - New madvise ioctl

  Rockchip:
   - LVDS support

  omapdrm:
   - omap4 HDMI CEC support

  etnaviv:
   - GPU performance counters groundwork

  sun4i:
   - refactor driver load + TCON backend
   - HDMI improvements
   - A31 support
   - Misc fixes

  udl:
   - Probe/EDID read fixes.

  tilcdc:
   - Misc fixes.

  pl111:
   - Support more variants

  adv7511:
   - Improve EDID handling.
   - HDMI CEC support

  sii8620:
   - Add remote control support"

* tag 'drm-for-v4.15' of git://people.freedesktop.org/~airlied/linux: (1480 commits)
  drm/rockchip: analogix_dp: Use mutex rather than spinlock
  drm/mode_object: fix documentation for object lookups.
  drm/i915: Reorder context-close to avoid calling i915_vma_close() under RCU
  drm/i915: Move init_clock_gating() back to where it was
  drm/i915: Prune the reservation shared fence array
  drm/i915: Idle the GPU before shinking everything
  drm/i915: Lock llist_del_first() vs llist_del_all()
  drm/i915: Calculate ironlake intermediate watermarks correctly, v2.
  drm/i915: Disable lazy PPGTT page table optimization for vGPU
  drm/i915/execlists: Remove the priority "optimisation"
  drm/i915: Filter out spurious execlists context-switch interrupts
  drm/amdgpu: use irq-safe lock for kiq->ring_lock
  drm/amdgpu: bypass lru touch for KIQ ring submission
  drm/amdgpu: Potential uninitialized variable in amdgpu_vm_update_directories()
  drm/amdgpu: potential uninitialized variable in amdgpu_vce_ring_parse_cs()
  drm/amd/powerplay: initialize a variable before using it
  drm/amd/powerplay: suppress KASAN out of bounds warning in vega10_populate_all_memory_levels
  drm/amd/amdgpu: fix evicted VRAM bo adjudgement condition
  drm/vblank: Tune drm_crtc_accurate_vblank_count() WARN down to a debug
  drm/rockchip: add CONFIG_OF dependency for lvds
  ...
2017-11-15 20:42:10 -08:00
Christian König
ca25fe5efe dma-buf: try to replace a signaled fence in reservation_object_add_shared_inplace
The amdgpu issue to also need signaled fences in the reservation objects should
be fixed by now.

Optimize the handling by replacing a signaled fence when adding a new
shared one.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171114142436.1360-2-christian.koenig@amd.com
2017-11-14 12:01:45 -05:00
Christian König
4d9c62e8ce dma-buf: keep only not signaled fence in reservation_object_add_shared_replace v3
The amdgpu issue to also need signaled fences in the reservation objects
should be fixed by now.

Optimize the list by keeping only the not signaled yet fences around.

v2: temporary put the signaled fences at the end of the new container
v3: put the old fence at the end of the new container as well.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171114142436.1360-1-christian.koenig@amd.com
2017-11-14 12:00:46 -05:00