Commit b5eaeaa5 authored by Paul E. McKenney's avatar Paul E. McKenney
Browse files

srcu: Allow early boot use of synchronize_srcu() 



This commit checks for pre-scheduler state, and if that early in the
boot process, synchronize_srcu() and friends are no-ops.

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
parent 900b1028

kernel/rcu/srcu.c

+2 −0
Original line number Diff line number Diff line
@@ -417,6 +417,8 @@ static void __synchronize_srcu(struct srcu_struct *sp, int trycount) 
			 lock_is_held(&rcu_sched_lock_map),

			 "Illegal synchronize_srcu() in same-type SRCU (or in RCU) read-side critical section");



	if (rcu_scheduler_active == RCU_SCHEDULER_INACTIVE)

		return;

	might_sleep();

	init_completion(&rcu.completion);