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ddk: 4.4

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git-svn-id: svn://kolibrios.org@6082 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
2016-01-20 04:19:53 +00:00
parent fc6f59584d
commit 9e5dea1997
153 changed files with 11372 additions and 3456 deletions
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27
drivers/include/linux/fence.h
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@@ -77,7 +77,7 @@ struct fence {
spinlock_t *lock;
unsigned context, seqno;
unsigned long flags;
// ktime_t timestamp;
ktime_t timestamp;
int status;
};
@@ -279,6 +279,22 @@ fence_is_signaled(struct fence *fence)
return false;
}
/**
* 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
@@ -298,14 +314,15 @@ 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;
else
return fence_is_signaled(f2) ? NULL : 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