[PATCH] dma-buf/fence: fix fence_is_later v2

[Michel Dänzer]

On 23.02.2016 04:32, Alex Deucher wrote:
> From: Christian König <christian.koenig at amd.com>
> 
> A fence is never later than itself. This caused a bunch of overhead for AMDGPU.
> 
> v2: simplify check as suggested by Michel.
> 
> Signed-off-by: Christian König <christian.koenig at amd.com>
> Reviewed-by: Michel Dänzer <michel.daenzer at amd.com>
> Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
> ---
>  include/linux/fence.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/linux/fence.h b/include/linux/fence.h
> index bb52201..5aa95eb 100644
> --- a/include/linux/fence.h
> +++ b/include/linux/fence.h
> @@ -292,7 +292,7 @@ static inline bool fence_is_later(struct fence *f1, struct fence *f2)
>  	if (WARN_ON(f1->context != f2->context))
>  		return false;
>  
> -	return f1->seqno - f2->seqno < INT_MAX;
> +	return (int)(f1->seqno - f2->seqno) > 0;
>  }
>  
>  /**
> 

According to

 scripts/get_maintainer.pl include/linux/fence.h

this patch should be sent to:

Sumit Semwal <sumit.semwal at linaro.org> (maintainer:DMA BUFFER SHARING FRAMEWORK)
linux-media at vger.kernel.org (open list:DMA BUFFER SHARING FRAMEWORK)
dri-devel at lists.freedesktop.org (open list:DMA BUFFER SHARING FRAMEWORK)
linaro-mm-sig at lists.linaro.org (moderated list:DMA BUFFER SHARING FRAMEWORK)
linux-kernel at vger.kernel.org (open list)

I'd add at least Sumit and the linaro-mm-sig list.


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