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Commit 956539b7 authored by Paul E. McKenney's avatar Paul E. McKenney Committed by Ingo Molnar
Browse files

rcu: Enable synchronize_sched_expedited() fastpath 



This patch adds a counter increment to enable tasks to actually
take the synchronize_sched_expedited() function's fastpath.

Signed-off-by: default avatarPaul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: laijs@cn.fujitsu.com
Cc: dipankar@in.ibm.com
Cc: mathieu.desnoyers@polymtl.ca
Cc: josh@joshtriplett.org
Cc: dvhltc@us.ibm.com
Cc: niv@us.ibm.com
Cc: peterz@infradead.org
Cc: rostedt@goodmis.org
Cc: Valdis.Kletnieks@vt.edu
Cc: dhowells@redhat.com
LKML-Reference: <1257889042435-git-send-email->
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent dbe01350

kernel/sched.c

+1 −0
Original line number Diff line number Diff line
@@ -10865,6 +10865,7 @@ void synchronize_sched_expedited(void) 
		spin_unlock_irqrestore(&rq->lock, flags);

	}

	rcu_expedited_state = RCU_EXPEDITED_STATE_IDLE;

	synchronize_sched_expedited_count++;

	mutex_unlock(&rcu_sched_expedited_mutex);

	put_online_cpus();

	if (need_full_sync)