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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-04-19 08:35:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-04-19 08:35:47 -0700 |
| commit | 85341c61361cc45a9cc0e11c01e8f4479ef460ac (patch) | |
| tree | 8d5e8e98aaef7f77f9749d851dd409ac356f0258 /kernel | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 (diff) | |
| parent | rcu: Make RCU lockdep check the lockdep_recursion variable (diff) | |
| download | linux-85341c61361cc45a9cc0e11c01e8f4479ef460ac.tar.gz linux-85341c61361cc45a9cc0e11c01e8f4479ef460ac.zip | |
Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
rcu: Make RCU lockdep check the lockdep_recursion variable
rcu: Update docs for rcu_access_pointer and rcu_dereference_protected
rcu: Better explain the condition parameter of rcu_dereference_check()
rcu: Add rcu_access_pointer and rcu_dereference_protected
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/rcupdate.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c index 63fe25433980..03a7ea1579f6 100644 --- a/kernel/rcupdate.c +++ b/kernel/rcupdate.c @@ -69,6 +69,13 @@ EXPORT_SYMBOL_GPL(rcu_scheduler_active); #ifdef CONFIG_DEBUG_LOCK_ALLOC +int debug_lockdep_rcu_enabled(void) +{ + return rcu_scheduler_active && debug_locks && + current->lockdep_recursion == 0; +} +EXPORT_SYMBOL_GPL(debug_lockdep_rcu_enabled); + /** * rcu_read_lock_bh_held - might we be in RCU-bh read-side critical section? * |