rcu: Clean up flavor-related definitions and comments in tiny.c (679d3f30) · Commits · 戴 / test

kernel/rcu/tiny.c

+5 −5

Original line number	Diff line number	Diff line
		@@ -117,9 +117,9 @@ static __latent_entropy void rcu_process_callbacks(struct softirq_action *unused

		/*
		* Wait for a grace period to elapse. But it is illegal to invoke
		* synchronize_sched() from within an RCU read-side critical section.
		* Therefore, any legal call to synchronize_sched() is a quiescent
		* state, and so on a UP system, synchronize_sched() need do nothing.
		* synchronize_rcu() from within an RCU read-side critical section.
		* Therefore, any legal call to synchronize_rcu() is a quiescent
		* state, and so on a UP system, synchronize_rcu() need do nothing.
		* (But Lai Jiangshan points out the benefits of doing might_sleep()
		* to reduce latency.)
		*
		@@ -130,12 +130,12 @@ void synchronize_rcu(void)
		RCU_LOCKDEP_WARN(lock_is_held(&rcu_bh_lock_map) \|\|
		lock_is_held(&rcu_lock_map) \|\|
		lock_is_held(&rcu_sched_lock_map),
		"Illegal synchronize_sched() in RCU read-side critical section");
		"Illegal synchronize_rcu() in RCU read-side critical section");
		}
		EXPORT_SYMBOL_GPL(synchronize_rcu);

		/*
		* Post an RCU callback to be invoked after the end of an RCU-sched grace
		* Post an RCU callback to be invoked after the end of an RCU grace
		* period. But since we have but one CPU, that would be after any
		* quiescent state.
		*/