Thomas Fleury 6b62e0f79a gpu: nvgpu: engine preempt timeout in safety ...

Preempt TSG occurs in non-mission mode, when unbinding channel
from TSG, or aborting TSG. Should a preempt not complete on
engine, we expect other HW safety mechanisms such as FECS
watchdog to detect issues that prevented saving current context.
Add BUG_ON when attempting to recover from preempt timeout,
to make sure we got such error, and sw_quiesce has been
requested.

Jira NVGPU-4230

Change-Id: Ia26a61e703f74eb28d29e72e75664ca4ec97a586
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2265082
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2020-12-15 14:10:29 -06:00

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