basenow = ktime_add(now, base->offset);
while ((node = base->first)) {
+ enum hrtimer_restart (*fn)(struct hrtimer *);
struct hrtimer *timer;
+ int restart;
timer = rb_entry(node, struct hrtimer, node);
HRTIMER_STATE_CALLBACK, 0);
timer_stats_account_hrtimer(timer);
+ fn = timer->function;
+ if (timer->cb_mode == HRTIMER_CB_IRQSAFE_NO_SOFTIRQ) {
+ /*
+ * Used for scheduler timers, avoid lock
+ * inversion with rq->lock and tasklist_lock.
+ *
+ * These timers are required to deal with
+ * enqueue expiry themselves and are not
+ * allowed to migrate.
+ */
+ spin_unlock(&cpu_base->lock);
+ restart = fn(timer);
+ spin_lock(&cpu_base->lock);
+ } else
+ restart = fn(timer);
+
/*
* Note: We clear the CALLBACK bit after
* enqueue_hrtimer to avoid reprogramming of
* the event hardware. This happens at the end
* of this function anyway.
*/
- if (timer->function(timer) != HRTIMER_NORESTART) {
+ if (restart != HRTIMER_NORESTART) {
BUG_ON(timer->state != HRTIMER_STATE_CALLBACK);
enqueue_hrtimer(timer, base, 0);
}