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: Chris 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: Sean Paul <seanpaul@chromium.org> Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170629125930.821-1-chris@chris-wilson.co.uk
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@ -335,6 +335,19 @@ dma_fence_is_signaled(struct dma_fence *fence)
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return false;
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}
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/**
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* __dma_fence_is_later - return if f1 is chronologically later than f2
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* @f1: [in] the first fence's seqno
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* @f2: [in] the second fence's seqno from the same context
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*
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* Returns true if f1 is chronologically later than f2. Both fences must be
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* from the same context, since a seqno is not common across contexts.
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*/
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static inline bool __dma_fence_is_later(u32 f1, u32 f2)
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{
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return (int)(f1 - f2) > 0;
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}
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/**
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* dma_fence_is_later - return if f1 is chronologically later than f2
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* @f1: [in] the first fence from the same context
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@ -349,7 +362,7 @@ static inline bool dma_fence_is_later(struct dma_fence *f1,
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if (WARN_ON(f1->context != f2->context))
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return false;
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return (int)(f1->seqno - f2->seqno) > 0;
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return __dma_fence_is_later(f1->seqno, f2->seqno);
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}
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/**
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