drm/msm: Wait for MMU devcoredump when waiting for GMU

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If there is a flood of faults then the MMU can become saturated while it
waits for the kernel to process the first fault and resume it, so that
the GMU becomes blocked. This is mainly a problem when the kernel reads
the state of the GPU for a devcoredump, because this takes a while. If
we timeout waiting for the GMU, check if this has happened and retry
after we're finished.

Signed-off-by: Connor Abbott <cwabbott0@gmail.com>
Patchwork: https://patchwork.freedesktop.org/patch/664685/
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>

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Connor Abbott 2025-07-18 09:50:17 -04:00 • committed by Rob Clark

parent a3a22373fc

commit 50a0b122cf

4 changed files with 48 additions and 6 deletions

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20

drivers/gpu/drm/msm/adreno/a6xx_gmu.c

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21

drivers/gpu/drm/msm/adreno/a6xx_hfi.c

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11

drivers/gpu/drm/msm/adreno/adreno_gpu.c

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2

drivers/gpu/drm/msm/adreno/adreno_gpu.h

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