X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=kernel%2Ftime%2Ftick-common.c;h=77a21abc87167482ff63efea9480c4ed11cbb21b;hb=d6dd9e93c7531fa31370e27d053a3940d8d662fb;hp=43ba1bdec14cac3f6b4aa2aff26f4b268572915a;hpb=cba5a641ca7887dc371486681dac887869d1c7b7;p=linux-2.6-omap-h63xx.git

diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c
index 43ba1bdec14..77a21abc871 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);
 
 /*
@@ -295,28 +295,40 @@ 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);
 }
 
-static void tick_suspend_periodic(void)
+static void tick_suspend(void)
 {
 	struct tick_device *td = &__get_cpu_var(tick_cpu_device);
 	unsigned long flags;
 
 	spin_lock_irqsave(&tick_device_lock, flags);
-	if (td->mode == TICKDEV_MODE_PERIODIC)
-		clockevents_set_mode(td->evtdev, CLOCK_EVT_MODE_SHUTDOWN);
+	clockevents_set_mode(td->evtdev, CLOCK_EVT_MODE_SHUTDOWN);
 	spin_unlock_irqrestore(&tick_device_lock, flags);
 }
 
-static void tick_resume_periodic(void)
+static void tick_resume(void)
 {
 	struct tick_device *td = &__get_cpu_var(tick_cpu_device);
 	unsigned long flags;
+	int broadcast = tick_resume_broadcast();
 
 	spin_lock_irqsave(&tick_device_lock, flags);
-	if (td->mode == TICKDEV_MODE_PERIODIC)
-		tick_setup_periodic(td->evtdev, 0);
+	clockevents_set_mode(td->evtdev, CLOCK_EVT_MODE_RESUME);
+
+	if (!broadcast) {
+		if (td->mode == TICKDEV_MODE_PERIODIC)
+			tick_setup_periodic(td->evtdev, 0);
+		else
+			tick_resume_oneshot();
+	}
 	spin_unlock_irqrestore(&tick_device_lock, flags);
 }
 
@@ -348,13 +360,12 @@ static int tick_notify(struct notifier_block *nb, unsigned long reason,
 		break;
 
 	case CLOCK_EVT_NOTIFY_SUSPEND:
-		tick_suspend_periodic();
+		tick_suspend();
 		tick_suspend_broadcast();
 		break;
 
 	case CLOCK_EVT_NOTIFY_RESUME:
-		if (!tick_resume_broadcast())
-			tick_resume_periodic();
+		tick_resume();
 		break;
 
 	default: