Commit f2e0dd70 authored Jul 14, 2010 by Paul E. McKenney

rcu: allow RCU CPU stall warning messages to be controlled in /sys

Set the permissions of the rcu_cpu_stall_suppress to 644 to enable RCU
CPU stall warnings to be enabled and disabled at runtime via sysfs.

Suggested-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

parent ded5e5ed

kernel/rcutree.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -145,7 +145,7 @@ module_param(qlowmark, int, 0);

		#ifdef CONFIG_RCU_CPU_STALL_DETECTOR
		int rcu_cpu_stall_suppress __read_mostly;
		module_param(rcu_cpu_stall_suppress, int, 0);
		module_param(rcu_cpu_stall_suppress, int, 0644);
		#endif /* #ifdef CONFIG_RCU_CPU_STALL_DETECTOR */

		static void force_quiescent_state(struct rcu_state *rsp, int relaxed);