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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2011-02-23 09:56:00 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2011-05-05 23:16:57 -0700 |
| commit | 108aae22339f445c134aeb48eca25df1014ab08d (patch) | |
| tree | 34a5ecb48e93726932004d36edcd60275cd47ce6 /kernel/rcupdate.c | |
| parent | 561190e3b3db372403fb6a327b0121b4cae1b87e (diff) | |
| download | lwn-108aae22339f445c134aeb48eca25df1014ab08d.tar.gz lwn-108aae22339f445c134aeb48eca25df1014ab08d.zip | |
rcu: Use WARN_ON_ONCE for DEBUG_OBJECTS_RCU_HEAD warnings
Avoid additional multiple-warning confusion in memory-corruption scenarios.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Diffstat (limited to 'kernel/rcupdate.c')
| -rw-r--r-- | kernel/rcupdate.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c index b54d6d18258c..7784bd216b6a 100644 --- a/kernel/rcupdate.c +++ b/kernel/rcupdate.c @@ -147,12 +147,12 @@ static int rcuhead_fixup_init(void *addr, enum debug_obj_state state) * attempt any fixup and just print a warning. */ #ifndef CONFIG_PREEMPT - WARN_ON(1); + WARN_ON_ONCE(1); return 0; #endif if (rcu_preempt_depth() != 0 || preempt_count() != 0 || irqs_disabled()) { - WARN_ON(1); + WARN_ON_ONCE(1); return 0; } rcu_barrier(); @@ -196,12 +196,12 @@ static int rcuhead_fixup_activate(void *addr, enum debug_obj_state state) * attempt any fixup and just print a warning. */ #ifndef CONFIG_PREEMPT - WARN_ON(1); + WARN_ON_ONCE(1); return 0; #endif if (rcu_preempt_depth() != 0 || preempt_count() != 0 || irqs_disabled()) { - WARN_ON(1); + WARN_ON_ONCE(1); return 0; } rcu_barrier(); @@ -233,12 +233,12 @@ static int rcuhead_fixup_free(void *addr, enum debug_obj_state state) * attempt any fixup and just print a warning. */ #ifndef CONFIG_PREEMPT - WARN_ON(1); + WARN_ON_ONCE(1); return 0; #endif if (rcu_preempt_depth() != 0 || preempt_count() != 0 || irqs_disabled()) { - WARN_ON(1); + WARN_ON_ONCE(1); return 0; } rcu_barrier(); |