[PATCH] drm/amdgpu: fix ocl test performance drop

[zhoucm1]

On 2017年05月22日 16:34, Flora Cui wrote:
> partial revert commit <6971d3d> - drm/amdgpu: cleanup logic in
> amdgpu_vm_flush
>
> Change-Id: Iadce9d613dfe9a739643a74050cea55854832adb
> Signed-off-by: Flora Cui <Flora.Cui at amd.com>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 6 +++---
>   1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> index 4573d8c..11d58f7 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> @@ -743,8 +743,7 @@ int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job)
>   		id->gws_size != job->gws_size ||
>   		id->oa_base != job->oa_base ||
>   		id->oa_size != job->oa_size);
> -	bool vm_flush_needed = job->vm_needs_flush ||
> -		amdgpu_vm_ring_has_compute_vm_bug(ring);
> +	bool vm_flush_needed = job->vm_needs_flush;
>   	unsigned patch_offset = 0;
>   	int r;
>   
> @@ -753,7 +752,8 @@ int amdgpu_vm_flush(struct amdgpu_ring *ring, struct amdgpu_job *job)
>   		vm_flush_needed = true;
>   	}
>   
> -	if (!vm_flush_needed && !gds_switch_needed)
> +	if (!vm_flush_needed && !gds_switch_needed &&
> +	    !amdgpu_vm_ring_has_compute_vm_bug(ring))
>   		return 0;
here change isn't needed.

Regards,
David Zhou
>   
>   	if (ring->funcs->init_cond_exec)