[PATCH] drm/ttm: stop always moving BOs on the LRU on page fault

[Michel Dänzer]

On 2019-01-11 2:15 p.m., Christian König wrote:
> Move the BO on the LRU only when it is actually moved by a DMA
> operation.
> 
> [...]
> 
> @@ -177,6 +175,13 @@ static vm_fault_t ttm_bo_vm_fault(struct vm_fault *vmf)
>  			ret = VM_FAULT_SIGBUS;
>  			goto out_unlock;
>  		}
> +
> +		if (bo->moving != moving) {

Hmm, could a driver just update the existing fence instead of attaching
a new one?


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer