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-rw-r--r--kernel/time/tick-broadcast.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c
index eadfce2fff7..8001d37071f 100644
--- a/kernel/time/tick-broadcast.c
+++ b/kernel/time/tick-broadcast.c
@@ -243,11 +243,18 @@ void tick_broadcast_on_off(unsigned long reason, int *oncpu)
{
int cpu = get_cpu();
- if (cpu == *oncpu)
- tick_do_broadcast_on_off(&reason);
- else
- smp_call_function_single(*oncpu, tick_do_broadcast_on_off,
- &reason, 1, 1);
+ if (!cpu_isset(*oncpu, cpu_online_map)) {
+ printk(KERN_ERR "tick-braodcast: ignoring broadcast for "
+ "offline CPU #%d\n", *oncpu);
+ } else {
+
+ if (cpu == *oncpu)
+ tick_do_broadcast_on_off(&reason);
+ else
+ smp_call_function_single(*oncpu,
+ tick_do_broadcast_on_off,
+ &reason, 1, 1);
+ }
put_cpu();
}