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authorLinus Torvalds <torvalds@linux-foundation.org>2010-05-18 08:17:58 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-18 08:17:58 -0700
commitf262af3d08d3fffc4e11277d3a177b2d67ea2aba (patch)
treecf5e4ac1bc39fe46cfbf4d17a0e9c71ee43b9728 /kernel/lockdep.c
parent1014cfe2fb4cdd663137aafb21448cb613dd6a7d (diff)
parent72d5a9f7a9542f88397558c65bcfc3b115a65e34 (diff)
Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (24 commits) rcu: remove all rcu head initializations, except on_stack initializations rcu head introduce rcu head init on stack Debugobjects transition check rcu: fix build bug in RCU_FAST_NO_HZ builds rcu: RCU_FAST_NO_HZ must check RCU dyntick state rcu: make SRCU usable in modules rcu: improve the RCU CPU-stall warning documentation rcu: reduce the number of spurious RCU_SOFTIRQ invocations rcu: permit discontiguous cpu_possible_mask CPU numbering rcu: improve RCU CPU stall-warning messages rcu: print boot-time console messages if RCU configs out of ordinary rcu: disable CPU stall warnings upon panic rcu: enable CPU_STALL_VERBOSE by default rcu: slim down rcutiny by removing rcu_scheduler_active and friends rcu: refactor RCU's context-switch handling rcu: rename rcutiny rcu_ctrlblk to rcu_sched_ctrlblk rcu: shrink rcutiny by making synchronize_rcu_bh() be inline rcu: fix now-bogus rcu_scheduler_active comments. rcu: Fix bogus CONFIG_PROVE_LOCKING in comments to reflect reality. rcu: ignore offline CPUs in last non-dyntick-idle CPU check ...
Diffstat (limited to 'kernel/lockdep.c')
-rw-r--r--kernel/lockdep.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 51080807dc8..4349e979341 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -3806,8 +3806,11 @@ void lockdep_rcu_dereference(const char *file, const int line)
{
struct task_struct *curr = current;
+#ifndef CONFIG_PROVE_RCU_REPEATEDLY
if (!debug_locks_off())
return;
+#endif /* #ifdef CONFIG_PROVE_RCU_REPEATEDLY */
+ /* Note: the following can be executed concurrently, so be careful. */
printk("\n===================================================\n");
printk( "[ INFO: suspicious rcu_dereference_check() usage. ]\n");
printk( "---------------------------------------------------\n");