aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--kernel/hrtimer.c25
1 files changed, 10 insertions, 15 deletions
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 9c2bfa84128..8010a67cead 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -1504,11 +1504,6 @@ static void __cpuinit init_hrtimers_cpu(int cpu)
#ifdef CONFIG_HOTPLUG_CPU
-static void tickle_timers(void *arg)
-{
- hrtimer_peek_ahead_timers();
-}
-
static void migrate_hrtimer_list(struct hrtimer_clock_base *old_base,
struct hrtimer_clock_base *new_base)
{
@@ -1547,20 +1542,19 @@ static void migrate_hrtimer_list(struct hrtimer_clock_base *old_base,
static void migrate_hrtimers(int scpu)
{
struct hrtimer_cpu_base *old_base, *new_base;
- int dcpu, i;
+ int i;
BUG_ON(cpu_online(scpu));
- old_base = &per_cpu(hrtimer_bases, scpu);
- new_base = &get_cpu_var(hrtimer_bases);
-
- dcpu = smp_processor_id();
-
tick_cancel_sched_timer(scpu);
+
+ local_irq_disable();
+ old_base = &per_cpu(hrtimer_bases, scpu);
+ new_base = &__get_cpu_var(hrtimer_bases);
/*
* The caller is globally serialized and nobody else
* takes two locks at once, deadlock is not possible.
*/
- spin_lock_irq(&new_base->lock);
+ spin_lock(&new_base->lock);
spin_lock_nested(&old_base->lock, SINGLE_DEPTH_NESTING);
for (i = 0; i < HRTIMER_MAX_CLOCK_BASES; i++) {
@@ -1569,10 +1563,11 @@ static void migrate_hrtimers(int scpu)
}
spin_unlock(&old_base->lock);
- spin_unlock_irq(&new_base->lock);
- put_cpu_var(hrtimer_bases);
+ spin_unlock(&new_base->lock);
- smp_call_function_single(dcpu, tickle_timers, NULL, 0);
+ /* Check, if we got expired work to do */
+ __hrtimer_peek_ahead_timers();
+ local_irq_enable();
}
#endif /* CONFIG_HOTPLUG_CPU */