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| author | Ingo Molnar <mingo@elte.hu> | 2009-03-04 11:42:31 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-03-04 11:42:31 +0100 |
| commit | 8163d88c79dca35478a2405c837733ac50ea4c39 (patch) | |
| tree | 6acae066a09b7dcbedab4a35ad62eba4ba3fd83c /kernel/rcupreempt.c | |
| parent | a1ef58f442542d8b3e3b963339fbc522c36e827c (diff) | |
| parent | fec6c6fec3e20637bee5d276fb61dd8b49a3f9cc (diff) | |
Merge commit 'v2.6.29-rc7' into perfcounters/core
Conflicts:
arch/x86/mm/iomap_32.c
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); |