Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 800fb34a authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

cpuidle: poll_state: Disregard disable idle states 



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: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent aa5eee35

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();