drm/amdkfd: Handle restart of kfd_ioctl_wait_events

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[ Upstream commit bea9a56afb ]

When kfd_ioctl_wait_events needs to restart due to a signal, we need to
update the timeout to account for the time already elapsed. We also need
to undo auto_reset of events that have signaled already, so that the
restarted ioctl will be able to count those signals again.

This fixes infinite hangs when kfd_ioctl_wait_events is interrupted by a
signal.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-and-tested-by: Xiaogang Chen <Xiaogang.Chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Felix Kuehling 2022-08-04 18:19:38 -04:00 • committed by Greg Kroah-Hartman

parent 952d4c72d9

commit 21e3891abc

3 changed files with 14 additions and 14 deletions

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2

drivers/gpu/drm/amd/amdkfd/kfd_chardev.c

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24

drivers/gpu/drm/amd/amdkfd/kfd_events.c

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2

drivers/gpu/drm/amd/amdkfd/kfd_priv.h

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