drm/etnaviv: consider completed fence seqno in hang check

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Some GPU heavy test programs manage to trigger the hangcheck quite often.
If there are no other GPU users in the system and the test program
exhibits a very regular structure in the commandstreams that are being
submitted, we can end up with two distinct submits managing to trigger
the hangcheck with the FE in a very similar address range. This leads
the hangcheck to believe that the GPU is stuck, while in reality the GPU
is already busy working on a different job. To avoid those spurious
GPU resets, also remember and consider the last completed fence seqno
in the hang check.

Reported-by: Joerg Albert <joerg.albert@iav.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>

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Lucas Stach 2021-12-22 01:17:28 +01:00

parent 6dfa2fab8d

commit cdd156955f

2 changed files with 4 additions and 1 deletions

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1

drivers/gpu/drm/etnaviv/etnaviv_gpu.h

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4

drivers/gpu/drm/etnaviv/etnaviv_sched.c

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