drm/amdkfd: Fix a circular lock dependency

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Fix a circular lock dependency exposed under userptr memory pressure.
The DQM lock is the only one taken inside the MMU notifier. We need
to make sure that no reclaim is done under this lock, and that
no other locks are taken under which reclaim is possible.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Philip Yang <Philip.Yang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Felix Kuehling 2019-04-23 23:32:56 -04:00 • committed by Alex Deucher

parent 16631afff2

commit 32cce8bc86

1 changed files with 29 additions and 4 deletions

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33

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

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