Hi Christian / Alex,
On 29 October 2015 at 21:34, Christian König deathsimple@vodafone.de wrote:
From: Christian König christian.koenig@amd.com
Return true when fence 1 is later than fence 2 without checking if any of them are signaled.
Useful for driver specific resource handling based on fences.
Signed-off-by: Christian König christian.koenig@amd.com Reviewed-by: Alex Deucher alexander.deucher@amd.com
Please feel free to add my Acked-by: Sumit Semwal sumit.semwal@linaro.org and take the dma-buf patches via the drm tree, if you'd like.
include/linux/fence.h | 22 +++++++++++++++++++--- 1 file changed, 19 insertions(+), 3 deletions(-)
diff --git a/include/linux/fence.h b/include/linux/fence.h index a4084d6..bb52201 100644 --- a/include/linux/fence.h +++ b/include/linux/fence.h @@ -280,6 +280,22 @@ fence_is_signaled(struct fence *fence) }
/**
- fence_is_later - return if f1 is chronologically later than f2
- @f1: [in] the first fence from the same context
- @f2: [in] the second fence 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 re-used across contexts.
- */
+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;+}
+/**
- fence_later - return the chronologically later fence
- @f1: [in] the first fence from the same context
- @f2: [in] the second fence from the same context
@@ -298,10 +314,10 @@ static inline struct fence *fence_later(struct fence *f1, struct fence *f2) * set if enable_signaling wasn't called, and enabling that here is * overkill. */
if (f2->seqno - f1->seqno <= INT_MAX)return fence_is_signaled(f2) ? NULL : f2;else
if (fence_is_later(f1, f2)) return fence_is_signaled(f1) ? NULL : f1;elsereturn fence_is_signaled(f2) ? NULL : f2;}
signed long fence_wait_timeout(struct fence *, bool intr, signed long timeout);
1.9.1
dri-devel mailing list dri-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/dri-devel