[PATCH 2/2] drm/amdgpu: use LRU mapping policy for SDMA engines

[Nicolai Hähnle]

On 28.03.2017 00:36, Andres Rodriguez wrote:
> Spreading the load across multiple SDMA engines can increase memory
> transfer performance.
>
> Signed-off-by: Andres Rodriguez <andresx7 at gmail.com>

Reviewed-by: Nicolai Hähnle <nicolai.haehnle at amd.com>


> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_queue_mgr.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_queue_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_queue_mgr.c
> index c6275b4..eb91b9b 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_queue_mgr.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_queue_mgr.c
> @@ -251,25 +251,25 @@ int amdgpu_queue_mgr_map(struct amdgpu_device *adev,
>
>  	*out_ring = amdgpu_get_cached_map(mapper, ring);
>  	if (*out_ring) {
>  		/* cache hit */
>  		r = 0;
>  		goto out_unlock;
>  	}
>
>  	switch (mapper->hw_ip) {
>  	case AMDGPU_HW_IP_GFX:
> -	case AMDGPU_HW_IP_DMA:
>  	case AMDGPU_HW_IP_UVD:
>  	case AMDGPU_HW_IP_VCE:
>  		r = amdgpu_identity_map(adev, mapper, ring, out_ring);
>  		break;
> +	case AMDGPU_HW_IP_DMA:
>  	case AMDGPU_HW_IP_COMPUTE:
>  		r = amdgpu_lru_map(adev, mapper, ring, out_ring);
>  		break;
>  	default:
>  		*out_ring = NULL;
>  		r = -EINVAL;
>  		DRM_ERROR("unknown HW IP type: %d\n", mapper->hw_ip);
>  	}
>
>  out_unlock:
>


-- 
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Aber vergiss niemals, wie sie sein sollte.