diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-03 14:32:04 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-03-03 14:32:04 -0800 |
| commit | b24746c7be75384d182845375c96433d713981bb (patch) | |
| tree | fdb0371d9e59c94e18c946a88c4aa3bcfa4af9b1 /kernel/rcupreempt.c | |
| parent | f41bf2ab998daaa2ac27348d5813e0ae21c57ded (diff) | |
| parent | a682604838763981613e42015cd0e39f2989d6bb (diff) | |
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: Teach RCU that idle task is not quiscent state at boot
Diffstat (limited to 'kernel/rcupreempt.c')
| -rw-r--r-- | kernel/rcupreempt.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/rcupreempt.c b/kernel/rcupreempt.c index 33cfc50781f9..5d59e850fb71 100644 --- a/kernel/rcupreempt.c +++ b/kernel/rcupreempt.c @@ -1181,6 +1181,9 @@ void __synchronize_sched(void) { struct rcu_synchronize rcu; + if (num_online_cpus() == 1) + return; /* blocking is gp if only one CPU! */ + init_completion(&rcu.completion); /* Will wake me after RCU finished. */ call_rcu_sched(&rcu.head, wakeme_after_rcu); |