u64 cpuidle_poll_time()

in cpuidle.c [392:421]

• 22 lines of code
• 5 McCabe index (conditional complexity)

u64 cpuidle_poll_time(struct cpuidle_driver *drv,
		      struct cpuidle_device *dev)
{
	int i;
	u64 limit_ns;

	BUILD_BUG_ON(CPUIDLE_POLL_MIN > CPUIDLE_POLL_MAX);

	if (dev->poll_limit_ns)
		return dev->poll_limit_ns;

	limit_ns = CPUIDLE_POLL_MAX;
	for (i = 1; i < drv->state_count; i++) {
		u64 state_limit;

		if (dev->states_usage[i].disable)
			continue;

		state_limit = drv->states[i].target_residency_ns;
		if (state_limit < CPUIDLE_POLL_MIN)
			continue;

		limit_ns = min_t(u64, state_limit, CPUIDLE_POLL_MAX);
		break;
	}

	dev->poll_limit_ns = limit_ns;

	return dev->poll_limit_ns;
}