Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 81114776 authored by Chris Wilson's avatar Chris Wilson Committed by Gustavo Padovan
Browse files

dma-buf/dma-fence: Extract __dma_fence_is_later() 



Often we have the task of comparing two seqno known to be on the same
context, so provide a common __dma_fence_is_later().

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Reviewed-by: default avatarSean Paul <seanpaul@chromium.org>
Signed-off-by: default avatarGustavo Padovan <gustavo.padovan@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170629125930.821-1-chris@chris-wilson.co.uk
parent faa8b0b7

include/linux/dma-fence.h

+14 −1
Original line number Diff line number Diff line
@@ -335,6 +335,19 @@ dma_fence_is_signaled(struct dma_fence *fence) 
	return false;

}



/**

 * __dma_fence_is_later - return if f1 is chronologically later than f2

 * @f1:	[in]	the first fence's seqno

 * @f2:	[in]	the second fence's seqno from the same context

 *

 * Returns true if f1 is chronologically later than f2. Both fences must be

 * from the same context, since a seqno is not common across contexts.

 */

static inline bool __dma_fence_is_later(u32 f1, u32 f2)

{

	return (int)(f1 - f2) > 0;

}



/**

 * dma_fence_is_later - return if f1 is chronologically later than f2

 * @f1:	[in]	the first fence from the same context
@@ -349,7 +362,7 @@ static inline bool dma_fence_is_later(struct dma_fence *f1, 
	if (WARN_ON(f1->context != f2->context))

		return false;



	return (int)(f1->seqno - f2->seqno) > 0;

	return __dma_fence_is_later(f1->seqno, f2->seqno);

}



/**