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 <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c index a050167e76a4..832d9ae101f0 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c @@ -35,6 +35,7 @@ static int amdgpu_benchmark_do_move(struct amdgpu_device *adev, unsigned size, struct dma_fence *fence; int i, r; + mutex_lock(&adev->mman.default_entity.lock); stime = ktime_get(); for (i = 0; i < n; i++) { 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) goto exit_do_move; } + mutex_unlock(&adev->mman.default_entity.lock); exit_do_move: etime = ktime_get(); -- 2.43.0
