Merge branch 'timers-nohz-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-3.10.git] / kernel / time / tick-broadcast.c
index f8d2109..206bbfb 100644 (file)
@@ -66,12 +66,17 @@ static void tick_broadcast_start_periodic(struct clock_event_device *bc)
  */
 int tick_check_broadcast_device(struct clock_event_device *dev)
 {
-       if ((tick_broadcast_device.evtdev &&
+       struct clock_event_device *cur = tick_broadcast_device.evtdev;
+
+       if ((dev->features & CLOCK_EVT_FEAT_DUMMY) ||
+           (tick_broadcast_device.evtdev &&
             tick_broadcast_device.evtdev->rating >= dev->rating) ||
             (dev->features & CLOCK_EVT_FEAT_C3STOP))
                return 0;
 
        clockevents_exchange_device(tick_broadcast_device.evtdev, dev);
+       if (cur)
+               cur->event_handler = clockevents_handle_noop;
        tick_broadcast_device.evtdev = dev;
        if (!cpumask_empty(tick_broadcast_mask))
                tick_broadcast_start_periodic(dev);
@@ -688,7 +693,8 @@ void tick_broadcast_setup_oneshot(struct clock_event_device *bc)
                bc->event_handler = tick_handle_oneshot_broadcast;
 
                /* Take the do_timer update */
-               tick_do_timer_cpu = cpu;
+               if (!tick_nohz_full_cpu(cpu))
+                       tick_do_timer_cpu = cpu;
 
                /*
                 * We must be careful here. There might be other CPUs