From: Pierre-Eric Pelloux-Prayer Date: Tue, 18 Nov 2025 14:15:04 +0000 (+0100) Subject: drm/amdgpu: add missing lock in amdgpu_benchmark_do_move X-Git-Tag: v7.1-rc1~167^2~31^2~144 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=30f2daedf4d8adfa331b05fcce06746e643e1f18;p=thirdparty%2Fkernel%2Flinux.git drm/amdgpu: add missing lock in amdgpu_benchmark_do_move 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 Reviewed-by: Christian König Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c index 1cbba9803d314..98ccd7ab9e9a3 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();