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drm/amdkfd: Signal eviction fence on process destruction (v2)

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Otherwise BOs may wait for the fence indefinitely and never be destroyed.

v2: Signal the fence right after destroying queues to avoid unnecessary
    delaye-delete in kfd_process_wq_release

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: xinhui pan <xinhui.pan@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Felix Kuehling 2020-03-04 15:57:23 -05:00 committed by Alex Deucher
parent cc9f2fba37
commit 129657c86f
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/amd/amdkfd/kfd_process.c
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@ -641,6 +641,11 @@ static void kfd_process_notifier_release(struct mmu_notifier *mn,
/* Indicate to other users that MM is no longer valid */ /* Indicate to other users that MM is no longer valid */
p->mm = NULL; p->mm = NULL;
/* Signal the eviction fence after user mode queues are
* destroyed. This allows any BOs to be freed without
* triggering pointless evictions or waiting for fences.
*/
dma_fence_signal(p->ef);
mutex_unlock(&p->mutex); mutex_unlock(&p->mutex);