amdgpu_copy_buffer
r = amdgpu_copy_buffer(adev, &adev->mman.default_entity,
r = amdgpu_copy_buffer(adev, entity, from, to, cur_size, resv,
int amdgpu_copy_buffer(struct amdgpu_device *adev,
r = amdgpu_copy_buffer(adev, entity,