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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-03-11 02:10:07 -0400 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-03-11 02:10:07 -0400 |
| commit | e14eee56c2280953c6e3d24d5dce42bd90836b81 (patch) | |
| tree | 21ab792d9ad6fbbab460058f352a0158f995644e /kernel/rcupreempt.c | |
| parent | d6ee6f7e4c74d9a0fed7544f4d389bde004651d3 (diff) | |
| parent | 99adcd9d67aaf04e28f5ae96df280f236bde4b66 (diff) | |
Merge commit 'origin/master' into next
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); |