linux-master/kernel/workqueue.c

210 	struct timer_list	mayday_timer;	  /* L: SOS timer for workers */
689 	destroy_timer_on_stack(&work->timer);
1026  * @worker is entering idle state.  Update stats and idle timer if
2053  * stable state - idle, on timer or on worklist.
2066  * disabled on entry.  This, combined with delayed_work->timer being
2082 	/* try to steal the timer if it exists */
2087 		 * dwork->timer is irqsafe.  If del_timer() fails, it's
2088 		 * guaranteed that the timer is not queued anywhere and not
2091 		if (likely(del_timer(&dwork->timer)))
2166  * Grab PENDING bit of @work. @work can be in any stable state - idle, on timer
2502 	struct delayed_work *dwork = from_timer(dwork, t, timer);
2504 	/* should have been called from irqsafe timer with irq already off */
2512 	struct timer_list *timer = &dwork->timer;
2516 	WARN_ON_ONCE(timer->function != delayed_work_timer_fn);
2517 	WARN_ON_ONCE(timer_pending(timer));
2522 	 * both optimization and correctness.  The earliest @timer can
2533 	timer->expires = jiffies + delay;
2540 		add_timer_on(timer, cpu);
2543 			add_timer_global(timer);
2545 			add_timer_on(timer, cpu);
2589  * modify @dwork's timer so that it expires after @delay.  If @delay is
2594  * pending and its timer was modified.
2899  * The timer is armed in worker_enter_idle(). Note that it isn't disarmed in
2901  * pool is at the too_many_workers() tipping point would cause too much timer
2942  * context, hence the split between timer callback and work item.
4240  * Delayed timer is cancelled and the pending work is queued for
4251 	if (del_timer_sync(&dwork->timer))