C++ (Cpp) sched_wake_timer_enable示例

示例#1

/*
 * The timer is automagically restarted, when interval != 0
 */
enum hrtimer_restart it_real_fn(struct hrtimer *timer)
{
	struct signal_struct *sig =
		container_of(timer, struct signal_struct, real_timer);

	trace_itimer_expire(ITIMER_REAL, sig->leader_pid, 0);
#ifdef CONFIG_SCHED_CFS
	sched_wake_timer_enable();
#endif
	kill_pid_info(SIGALRM, SEND_SIG_PRIV, sig->leader_pid);
#ifdef CONFIG_SCHED_CFS
	sched_wake_timer_disable();
#endif

	return HRTIMER_NORESTART;
}

示例#2

static void __run_hrtimer(struct hrtimer *timer, ktime_t *now)
{
	struct hrtimer_clock_base *base = timer->base;
	struct hrtimer_cpu_base *cpu_base = base->cpu_base;
	enum hrtimer_restart (*fn)(struct hrtimer *);
	int restart;

	WARN_ON(!irqs_disabled());

#ifdef CONFIG_SCHED_CFS
	sched_wake_timer_enable();
#endif
	debug_deactivate(timer);
	__remove_hrtimer(timer, base, HRTIMER_STATE_CALLBACK, 0);
	timer_stats_account_hrtimer(timer);
	fn = timer->function;

	/*
	 * Because we run timers from hardirq context, there is no chance
	 * they get migrated to another cpu, therefore its safe to unlock
	 * the timer base.
	 */
	raw_spin_unlock(&cpu_base->lock);
	trace_hrtimer_expire_entry(timer, now);
	restart = fn(timer);
	trace_hrtimer_expire_exit(timer);
	raw_spin_lock(&cpu_base->lock);

	/*
	 * Note: We clear the CALLBACK bit after enqueue_hrtimer and
	 * we do not reprogramm the event hardware. Happens either in
	 * hrtimer_start_range_ns() or in hrtimer_interrupt()
	 */
	if (restart != HRTIMER_NORESTART) {
		BUG_ON(timer->state != HRTIMER_STATE_CALLBACK);
		enqueue_hrtimer(timer, base);
	}

	WARN_ON_ONCE(!(timer->state & HRTIMER_STATE_CALLBACK));

	timer->state &= ~HRTIMER_STATE_CALLBACK;
#ifdef CONFIG_SCHED_CFS
	sched_wake_timer_disable();
#endif
}