drm/amdkfd: fix circular locking on get_wave_state

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get_wave_state acquires the mmap_lock on copy_to_user but so do
mmu_notifiers.  mmu_notifiers allows dqm locking so do get_wave_state
outside the dqm_lock to prevent circular locking.

v2: squash in unused variable removal.

Signed-off-by: Jonathan Kim <jonathan.kim@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Jonathan Kim 2021-06-11 13:36:34 -04:00 • committed by Alex Deucher

parent 03fc4cf45d

commit 63f6e01237

1 changed files with 13 additions and 15 deletions

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28

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

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