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-rw-r--r--kernel/time/clockevents.c18
1 files changed, 15 insertions, 3 deletions
diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c
index 20a8920029ee..91db2e33d86a 100644
--- a/kernel/time/clockevents.c
+++ b/kernel/time/clockevents.c
@@ -238,8 +238,9 @@ void clockevents_exchange_device(struct clock_event_device *old,
*/
void clockevents_notify(unsigned long reason, void *arg)
{
- struct list_head *node, *tmp;
+ struct clock_event_device *dev, *tmp;
unsigned long flags;
+ int cpu;
spin_lock_irqsave(&clockevents_lock, flags);
clockevents_do_notify(reason, arg);
@@ -250,8 +251,19 @@ void clockevents_notify(unsigned long reason, void *arg)
* Unregister the clock event devices which were
* released from the users in the notify chain.
*/
- list_for_each_safe(node, tmp, &clockevents_released)
- list_del(node);
+ list_for_each_entry_safe(dev, tmp, &clockevents_released, list)
+ list_del(&dev->list);
+ /*
+ * Now check whether the CPU has left unused per cpu devices
+ */
+ cpu = *((int *)arg);
+ list_for_each_entry_safe(dev, tmp, &clockevent_devices, list) {
+ if (cpumask_test_cpu(cpu, dev->cpumask) &&
+ cpumask_weight(dev->cpumask) == 1) {
+ BUG_ON(dev->mode != CLOCK_EVT_MODE_UNUSED);
+ list_del(&dev->list);
+ }
+ }
break;
default:
break;