diff options
| author | David S. Miller <davem@davemloft.net> | 2009-03-19 02:53:57 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-03-19 02:53:57 -0400 |
| commit | 0702b30dd821ac8a4103ddbe545518713fdca9be (patch) | |
| tree | 8ce0c9f5e58c5ccb99870505eecd139986caa05e /kernel/rcupreempt.c | |
| parent | 192d7a4667c6d11d1a174ec4cad9a3c5d5f9043c (diff) | |
| parent | a1e4ee22863d41a6fbb24310d7951836cb6dafe7 (diff) | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
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) | |||
| 1181 | { | 1181 | { |
| 1182 | struct rcu_synchronize rcu; | 1182 | struct rcu_synchronize rcu; |
| 1183 | 1183 | ||
| 1184 | if (num_online_cpus() == 1) | ||
| 1185 | return; /* blocking is gp if only one CPU! */ | ||
| 1186 | |||
| 1184 | init_completion(&rcu.completion); | 1187 | init_completion(&rcu.completion); |
| 1185 | /* Will wake me after RCU finished. */ | 1188 | /* Will wake me after RCU finished. */ |
| 1186 | call_rcu_sched(&rcu.head, wakeme_after_rcu); | 1189 | call_rcu_sched(&rcu.head, wakeme_after_rcu); |