static void enter_s2idle_proper()

in cpuidle.c [137:166]

• 21 lines of code
• 4 McCabe index (conditional complexity)

static void enter_s2idle_proper(struct cpuidle_driver *drv,
				struct cpuidle_device *dev, int index)
{
	ktime_t time_start, time_end;
	struct cpuidle_state *target_state = &drv->states[index];

	time_start = ns_to_ktime(local_clock());

	tick_freeze();
	/*
	 * The state used here cannot be a "coupled" one, because the "coupled"
	 * cpuidle mechanism enables interrupts and doing that with timekeeping
	 * suspended is generally unsafe.
	 */
	stop_critical_timings();
	if (!(target_state->flags & CPUIDLE_FLAG_RCU_IDLE))
		rcu_idle_enter();
	target_state->enter_s2idle(dev, drv, index);
	if (WARN_ON_ONCE(!irqs_disabled()))
		local_irq_disable();
	if (!(target_state->flags & CPUIDLE_FLAG_RCU_IDLE))
		rcu_idle_exit();
	tick_unfreeze();
	start_critical_timings();

	time_end = ns_to_ktime(local_clock());

	dev->states_usage[index].s2idle_time += ktime_us_delta(time_end, time_start);
	dev->states_usage[index].s2idle_usage++;
}