linux.git/drivers/dma-buf/reservation.c, branch v4.18

Merge tag 'drm-misc-next-2018-02-13' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2018-02-15T23:29:27+00:00

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 
Cc: Chunming Zhou 
Cc: Samuel Li 
Cc: Linus Walleij 
Cc: Noralf Trønnes 
Cc: Brian Norris 
Cc: Maxime Ripard 
Cc: Ville Syrjala 
Cc: Christian König 
Cc: Manasi Navare 
Cc: Philippe Cornu 
Cc: Leo (Sunpeng) Li 
Cc: Daniel Vetter 
Cc: Maarten Lankhorst 

* 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
  ...

dma-buf: make returning the exclusive fence optional

2018-01-23T17:14:26+00:00

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 
Acked-by: Daniel Vetter 
Signed-off-by: Christian König 
Signed-off-by: Alex Deucher 
Link: https://patchwork.freedesktop.org/patch/msgid/20180110125341.3618-1-christian.koenig@amd.com

dma-buf: fix reservation_object_wait_timeout_rcu once more v2

2018-01-23T15:46:39+00:00

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 
Cc: stable@vger.kernel.org
Tested-by: Lyude Paul 
Reviewed-by: Lyude Paul 
Reviewed-by: Chris Wilson 
Signed-off-by: Alex Deucher 
Link: https://patchwork.freedesktop.org/patch/msgid/20180122200003.6665-1-christian.koenig@amd.com

dma-buf: try to replace a signaled fence in reservation_object_add_shared_inplace

2017-11-14T17:01:45+00:00

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 
Reviewed-by: Chris Wilson 
Signed-off-by: Alex Deucher 
Link: https://patchwork.freedesktop.org/patch/msgid/20171114142436.1360-2-christian.koenig@amd.com

dma-buf: keep only not signaled fence in reservation_object_add_shared_replace v3

2017-11-14T17:00:46+00:00

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 
Reviewed-by: Chris Wilson 
Tested-by: Chris Wilson 
Signed-off-by: Alex Deucher 
Link: https://patchwork.freedesktop.org/patch/msgid/20171114142436.1360-1-christian.koenig@amd.com

dma-buf: Use rcu_assign_pointer() to set rcu protected pointers

2017-11-09T18:35:12+00:00

Use rcu_assign_pointer() when setting an rcu protected pointer.
This gets rid of another sparse warning.

Cc: Dave Airlie 
Cc: Jason Ekstrand 
Cc: linaro-mm-sig@lists.linaro.org
Cc: linux-media@vger.kernel.org
Cc: Alex Deucher 
Cc: Christian König 
Cc: Sumit Semwal 
Cc: Chris Wilson 
Signed-off-by: Ville Syrjälä 
Link: https://patchwork.freedesktop.org/patch/msgid/20171102200336.23347-5-ville.syrjala@linux.intel.com
Reviewed-by: Daniel Vetter 
Reviewed-by: Christian König .
Acked-by: Sumit Semwal

dma-buf: make reservation_object_copy_fences rcu save

2017-10-09T15:07:56+00:00

Stop requiring that the src reservation object is locked for this operation.

Acked-by: Chunming Zhou 
Signed-off-by: Christian König 
Signed-off-by: Alex Deucher 
Link: https://patchwork.freedesktop.org/patch/msgid/1504551766-5093-1-git-send-email-deathsimple@vodafone.de

dma-buf: fix reservation_object_wait_timeout_rcu to wait correctly v2

2017-08-14T17:01:25+00:00

With hardware resets in mind it is possible that all shared fences are
signaled, but the exlusive isn't. Fix waiting for everything in this situation.

v2: make sure we always wait for the exclusive fence

Acked-by: Sumit Semwal 
Signed-off-by: Christian König 
Reviewed-by: Alex Deucher 
Reviewed-by: Chunming Zhou 
Signed-off-by: Alex Deucher 
Link: https://patchwork.freedesktop.org/patch/msgid/1502384509-10465-3-git-send-email-alexander.deucher@amd.com

dma-buf: add reservation_object_copy_fences (v2)

2017-08-14T17:00:49+00:00

Allows us to copy all the fences in a reservation object to another one.

v2: handle NULL src_list

Signed-off-by: Christian König 
Reviewed-by: Alex Deucher 
Signed-off-by: Alex Deucher 
Link: https://patchwork.freedesktop.org/patch/msgid/1502384509-10465-2-git-send-email-alexander.deucher@amd.com

dma-buf: dma_fence_put is NULL safe

2017-08-09T19:01:32+00:00

No need to check.

Acked-by: Sumit Semwal 
Signed-off-by: Christian König 
Reviewed-by: Alex Deucher 
Signed-off-by: Alex Deucher 
Link: https://patchwork.freedesktop.org/patch/msgid/1502141543-13455-2-git-send-email-alexander.deucher@amd.com