diff options
| -rw-r--r-- | include/linux/rcupdate.h | 9 | ||||
| -rw-r--r-- | kernel/rcu/srcu.c | 17 | ||||
| -rw-r--r-- | kernel/rcu/update.c | 15 |
3 files changed, 15 insertions, 26 deletions
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index 78097491cd99..3e6afed51051 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -195,6 +195,15 @@ void call_rcu_sched(struct rcu_head *head, void synchronize_sched(void); +/* + * Structure allowing asynchronous waiting on RCU. + */ +struct rcu_synchronize { + struct rcu_head head; + struct completion completion; +}; +void wakeme_after_rcu(struct rcu_head *head); + /** * call_rcu_tasks() - Queue an RCU for invocation task-based grace period * @head: structure to be used for queueing the RCU updates. diff --git a/kernel/rcu/srcu.c b/kernel/rcu/srcu.c index 445bf8ffe3fb..81f53b504c18 100644 --- a/kernel/rcu/srcu.c +++ b/kernel/rcu/srcu.c @@ -402,23 +402,6 @@ void call_srcu(struct srcu_struct *sp, struct rcu_head *head, } EXPORT_SYMBOL_GPL(call_srcu); -struct rcu_synchronize { - struct rcu_head head; - struct completion completion; -}; - -/* - * Awaken the corresponding synchronize_srcu() instance now that a - * grace period has elapsed. - */ -static void wakeme_after_rcu(struct rcu_head *head) -{ - struct rcu_synchronize *rcu; - - rcu = container_of(head, struct rcu_synchronize, head); - complete(&rcu->completion); -} - static void srcu_advance_batches(struct srcu_struct *sp, int trycount); static void srcu_reschedule(struct srcu_struct *sp); diff --git a/kernel/rcu/update.c b/kernel/rcu/update.c index e0d31a345ee6..8864ed90f0d7 100644 --- a/kernel/rcu/update.c +++ b/kernel/rcu/update.c @@ -199,16 +199,13 @@ EXPORT_SYMBOL_GPL(rcu_read_lock_bh_held); #endif /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */ -struct rcu_synchronize { - struct rcu_head head; - struct completion completion; -}; - -/* - * Awaken the corresponding synchronize_rcu() instance now that a - * grace period has elapsed. +/** + * wakeme_after_rcu() - Callback function to awaken a task after grace period + * @head: Pointer to rcu_head member within rcu_synchronize structure + * + * Awaken the corresponding task now that a grace period has elapsed. */ -static void wakeme_after_rcu(struct rcu_head *head) +void wakeme_after_rcu(struct rcu_head *head) { struct rcu_synchronize *rcu; |