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urcu-defer: make call_rcu() energy efficient using futex()
[urcu.git]
/
urcu-defer-static.h
diff --git
a/urcu-defer-static.h
b/urcu-defer-static.h
index a00ced033b6cc44fcf9b9e02d66cfbc54081e705..dd24c61d85d7885d685323757f83c52c2df2f15f 100644
(file)
--- a/
urcu-defer-static.h
+++ b/
urcu-defer-static.h
@@
-125,6
+125,7
@@
struct defer_queue {
extern struct defer_queue __thread defer_queue;
extern void rcu_defer_barrier_thread(void);
extern struct defer_queue __thread defer_queue;
extern void rcu_defer_barrier_thread(void);
+extern void wake_up_defer(void);
/*
* not signal-safe.
/*
* not signal-safe.
@@
-183,6
+184,10
@@
static inline void _rcu_defer_queue(void (*fct)(void *p), void *p)
smp_wmb(); /* Publish new pointer before head */
/* Write q[] before head. */
STORE_SHARED(defer_queue.head, head);
smp_wmb(); /* Publish new pointer before head */
/* Write q[] before head. */
STORE_SHARED(defer_queue.head, head);
+ /*
+ * Wake-up any waiting defer thread.
+ */
+ wake_up_defer();
}
#endif /* _URCU_DEFER_STATIC_H */
}
#endif /* _URCU_DEFER_STATIC_H */
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