Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 <pierre-eric.pelloux-prayer@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
authored by
Pierre-Eric Pelloux-Prayer
and committed by
Alex Deucher
30f2daed
3d9eea6d
+2
+2
drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
+2
drivers/gpu/drm/amd/amdgpu/amdgpu_benchmark.c
···
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struct dma_fence *fence;
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int i, r;
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+
mutex_lock(&adev->mman.default_entity.lock);
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stime = ktime_get();
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for (i = 0; i < n; i++) {
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r = amdgpu_copy_buffer(adev, &adev->mman.default_entity,
···
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if (r)
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goto exit_do_move;
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}
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+
mutex_unlock(&adev->mman.default_entity.lock);
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exit_do_move:
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etime = ktime_get();