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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-07-14 23:38:30 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2010-08-20 02:18:03 +0200 |
| commit | f2e0dd7090eddef427ab9d9f81de122244cded51 (patch) | |
| tree | 71f6dbc174eb9405c1d4313fafa2b5db369d5939 /kernel/rcutree.c | |
| parent | Update call_rcu() usage, add synchronize_rcu() (diff) | |
| download | linux-f2e0dd7090eddef427ab9d9f81de122244cded51.tar.xz linux-f2e0dd7090eddef427ab9d9f81de122244cded51.zip | |
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>
Diffstat (limited to 'kernel/rcutree.c')
| -rw-r--r-- | kernel/rcutree.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/rcutree.c b/kernel/rcutree.c index f3d5906cbc21..5d910beefff2 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -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); |