kernel/rcu/tree.c

1580 	// Someone like call_rcu() requested a force-quiescent-state scan.
2146 	 * races with call_rcu() from interrupt handlers.  Leave the
2252 	 * The following usually indicates a double call_rcu().  To track
2614  * Handle any core-RCU processing required by a call_rcu() invocation.
2721 		 * Probable double call_rcu(), so leak the callback.
2723 		 * time callback was passed to call_rcu().
2741 		// This can trigger due to call_rcu() from offline CPU:
2775  * Use this API instead of call_rcu() if you don't want the callback to be
2780  * reuses call_rcu()'s logic. Refer to call_rcu() for more details about memory
2793  * call_rcu() - Queue an RCU callback for invocation after a grace period.
2805  * that started after call_rcu() was invoked.
2819  * to call_rcu().  It also means that each CPU executing an RCU read-side
2821  * executed a memory barrier after the call_rcu() but before the beginning
2826  * Furthermore, if CPU A invoked call_rcu() and CPU B invoked the
2829  * between the call to call_rcu() and the invocation of "func()" -- even
2836 void call_rcu(struct rcu_head *head, rcu_callback_t func)
2840 EXPORT_SYMBOL_GPL(call_rcu);
4055  * rcu_barrier - Wait until all in-flight call_rcu() callbacks complete.