Commit fc390cde authored May 06, 2010 by Paul E. McKenney Committed by Tejun Heo May 07, 2010

rcu: need barrier() in UP synchronize_sched_expedited()



If synchronize_sched_expedited() is ever to be called from within
kernel/sched.c in a !SMP PREEMPT kernel, the !SMP implementation needs
a barrier().

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

parent cc631fb7

kernel/sched.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -8932,6 +8932,7 @@ struct cgroup_subsys cpuacct_subsys = {

		void synchronize_sched_expedited(void)
		{
		barrier();
		}
		EXPORT_SYMBOL_GPL(synchronize_sched_expedited);