diff options
Diffstat (limited to 'kernel/sched/swait.c')
| -rw-r--r-- | kernel/sched/swait.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/kernel/sched/swait.c b/kernel/sched/swait.c index 82f0dff90030..ef027ff3250a 100644 --- a/kernel/sched/swait.c +++ b/kernel/sched/swait.c @@ -1,5 +1,6 @@ #include <linux/sched.h> #include <linux/swait.h> +#include <linux/suspend.h> void __init_swait_queue_head(struct swait_queue_head *q, const char *name, struct lock_class_key *key) @@ -29,6 +30,25 @@ void swake_up_locked(struct swait_queue_head *q) } EXPORT_SYMBOL(swake_up_locked); +void swake_up_all_locked(struct swait_queue_head *q) +{ + struct swait_queue *curr; + int wakes = 0; + + while (!list_empty(&q->task_list)) { + + curr = list_first_entry(&q->task_list, typeof(*curr), + task_list); + wake_up_process(curr->task); + list_del_init(&curr->task_list); + wakes++; + } + if (pm_in_action) + return; + WARN(wakes > 2, "complete_all() with %d waiters\n", wakes); +} +EXPORT_SYMBOL(swake_up_all_locked); + void swake_up(struct swait_queue_head *q) { unsigned long flags; @@ -54,6 +74,7 @@ void swake_up_all(struct swait_queue_head *q) if (!swait_active(q)) return; + WARN_ON(irqs_disabled()); raw_spin_lock_irq(&q->lock); list_splice_init(&q->task_list, &tmp); while (!list_empty(&tmp)) { |