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| author | Ingo Molnar <mingo@elte.hu> | 2009-03-05 11:59:10 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-05 11:59:10 +0100 |
| commit | 49d2d266adff27793fed247a2e9e672d59b6ddc6 (patch) | |
| tree | aa23052f8b6e9f1a96e56873c940eef7110f0013 /kernel/rcupreempt.c | |
| parent | Merge branches 'sched/clock', 'sched/urgent' and 'linus' into sched/core (diff) | |
| parent | Linux 2.6.29-rc7 (diff) | |
| download | linux-49d2d266adff27793fed247a2e9e672d59b6ddc6.tar.xz linux-49d2d266adff27793fed247a2e9e672d59b6ddc6.zip | |
Merge commit 'v2.6.29-rc7' into sched/core
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); |