cpuidle: poll_state: Disregard disable idle states (800fb34a) · Commits · 戴 / test

When computing the limit of time to spend in the loop in poll_idle(), use the target residency of the first enabled idle state deeper than state 0 instead of always using the target residency of state 1. This helps when state 1 is disabled for diagnostics, for instance. Signed-off-by:

Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/cpuidle/poll_state.c

+10 −1

Original line number	Diff line number	Diff line
		@@ -20,8 +20,17 @@ static int __cpuidle poll_idle(struct cpuidle_device *dev,

		local_irq_enable();
		if (!current_set_polling_and_test()) {
		u64 limit = (u64)drv->states[1].target_residency * NSEC_PER_USEC;
		unsigned int loop_count = 0;
		u64 limit = TICK_USEC;
		int i;

		for (i = 1; i < drv->state_count; i++) {
		if (drv->states[i].disabled \|\| dev->states_usage[i].disable)
		continue;

		limit = (u64)drv->states[i].target_residency * NSEC_PER_USEC;
		break;
		}

		while (!need_resched()) {
		cpu_relax();

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