github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-24 15:12:13 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/amdgpu: add missing lock in amdgpu_benchmark_do_move

Browse Source 
Taking the entity lock is required to guarantee the ordering of
execution. The next commit will add a check that the lock is
held.

Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Pierre-Eric Pelloux-Prayer 2025-11-18 15:15:04 +01:00 committed by Alex Deucher
parent 3d9eea6d00
commit 30f2daedf4
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
View File

@ -35,6 +35,7 @@ static int amdgpu_benchmark_do_move(struct amdgpu_device *adev, unsigned size,
struct dma_fence *fence; struct dma_fence *fence;
int i, r; int i, r;
mutex_lock(&adev->mman.default_entity.lock);
stime = ktime_get(); stime = ktime_get();
for (i = 0; i < n; i++) { for (i = 0; i < n; i++) {
r = amdgpu_copy_buffer(adev, &adev->mman.default_entity, r = amdgpu_copy_buffer(adev, &adev->mman.default_entity,
@ -47,6 +48,7 @@ static int amdgpu_benchmark_do_move(struct amdgpu_device *adev, unsigned size,
if (r) if (r)
goto exit_do_move; goto exit_do_move;
} }
mutex_unlock(&adev->mman.default_entity.lock);
exit_do_move: exit_do_move:
etime = ktime_get(); etime = ktime_get();