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dma-buf/fence: add fence_wait_any_timeout function v2

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Waiting for the first fence in an array of fences to signal.

This is useful for device driver specific resource managers
and also Vulkan needs something similar.

v2: more parameter checks, handling for timeout==0,
    remove NULL entry support, better callback removal.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
This commit is contained in:
Christian König
2015-10-20 16:34:16 +02:00
committed by Alex Deucher
parent fe537d003f
commit a519435a96
2 changed files with 100 additions and 1 deletions
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3
include/linux/fence.h
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@@ -305,7 +305,8 @@ static inline struct fence *fence_later(struct fence *f1, struct fence *f2)
}
signed long fence_wait_timeout(struct fence *, bool intr, signed long timeout);
signed long fence_wait_any_timeout(struct fence **fences, uint32_t count,
bool intr, signed long timeout);
/**
* fence_wait - sleep until the fence gets signaled