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[v2,0/4] fixes for Adreno A5Xx preemption

Message ID 20240901135419.1075412-1-vladimir.lypak@gmail.com (mailing list archive)
Headers show
Series fixes for Adreno A5Xx preemption | expand

Message

Vladimir Lypak Sept. 1, 2024, 1:53 p.m. UTC 
There are several issues with preemption on Adreno A5XX GPUs which
render system unusable if more than one priority level is used. Those
issues include persistent GPU faults and hangs, full UI lockups with
idling GPU.

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Changes in v2:
- Use spinlock to serialize preemption initiation in patch 3
- Added Reviewed-by on patch 2
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Vladimir Lypak (4):
  drm/msm/a5xx: disable preemption in submits by default
  drm/msm/a5xx: properly clear preemption records on resume
  drm/msm/a5xx: fix races in preemption evaluation stage
  drm/msm/a5xx: workaround early ring-buffer emptiness check

 drivers/gpu/drm/msm/adreno/a5xx_gpu.c     | 12 +++++++--
 drivers/gpu/drm/msm/adreno/a5xx_gpu.h     |  2 ++
 drivers/gpu/drm/msm/adreno/a5xx_preempt.c | 30 +++++++++++++++++++++--
 3 files changed, 40 insertions(+), 4 deletions(-)
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base-commit: 985bf40edf4343dcb04c33f58b40b4a85c1776d4