Merge branch 'drm-patches' of ssh://master.kernel.org/pub/scm/linux/kernel/git/airlie...

[pandora-kernel.git] / kernel / time / tick-common.c

diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c
index bfda3f7..a96ec9a 100644 (file)
--- 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);
 }