[PATCH] drm/etnaviv: consider completed fence seqno in hang check

[Christian Gmeiner]

Am Mi., 22. Dez. 2021 um 01:17 Uhr schrieb Lucas Stach <l.stach at pengutronix.de>:
>
> 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 at iav.de>
> Signed-off-by: Lucas Stach <l.stach at pengutronix.de>

Reviewed-by: Christian Gmeiner <christian.gmeiner at gmail.com>

-- 
greets
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Christian Gmeiner, MSc

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