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Amber Lin 0e72b151e3 drm/amdkfd: Fix circular lock in nocpsch path 
[ Upstream commit a7b2451d31 ]

Calling free_mqd inside of destroy_queue_nocpsch_locked can cause a
circular lock. destroy_queue_nocpsch_locked is called under a DQM lock,
which is taken in MMU notifiers, potentially in FS reclaim context.
Taking another lock, which is BO reservation lock from free_mqd, while
causing an FS reclaim inside the DQM lock creates a problematic circular
lock dependency. Therefore move free_mqd out of
destroy_queue_nocpsch_locked and call it after unlocking DQM.

Signed-off-by: Amber Lin <Amber.Lin@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2021-07-19 09:44:50 +02:00
..
drm drm/amdkfd: Fix circular lock in nocpsch path 2021-07-19 09:44:50 +02:00
host1x gpu: host1x: Split up client initalization and registration 2021-06-18 10:00:04 +02:00
ipu-v3 gpu: ipu-v3: remove unused functions 2020-10-26 10:42:38 +01:00
trace gpu/trace: add a gpu total memory usage tracepoint 2020-03-03 17:52:41 -05:00
vga vgaarb: mark vga_tryget static 2020-08-01 11:28:17 +02:00
Makefile gpu/trace: add a gpu total memory usage tracepoint 2020-03-03 17:52:41 -05:00