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-rw-r--r--kernel/time/tick-common.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c
index bfda3f7f071..a96ec9ab345 100644
--- a/kernel/time/tick-common.c
+++ b/kernel/time/tick-common.c
@@ -31,7 +31,7 @@ DEFINE_PER_CPU(struct tick_device, tick_cpu_device);
*/
ktime_t tick_next_period;
ktime_t tick_period;
-static int tick_do_timer_cpu = -1;
+int tick_do_timer_cpu __read_mostly = -1;
DEFINE_SPINLOCK(tick_device_lock);
/*
@@ -295,6 +295,12 @@ static void tick_shutdown(unsigned int *cpup)
clockevents_exchange_device(dev, NULL);
td->evtdev = NULL;
}
+ /* Transfer the do_timer job away from this cpu */
+ if (*cpup == tick_do_timer_cpu) {
+ int cpu = first_cpu(cpu_online_map);
+
+ tick_do_timer_cpu = (cpu != NR_CPUS) ? cpu : -1;
+ }
spin_unlock_irqrestore(&tick_device_lock, flags);
}