Commit eada238f authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

Merge branch 'pm-cpuidle' 

* pm-cpuidle:
  cpuidle: Remove time measurement in poll state
  cpuidle: Remove manual selection of the multiple driver support
  cpuidle: ladder governor - use macro instead of hardcoded value
  cpuidle: big_little: Fix build error
  cpuidle: menu governor - remove unused macro STDDEV_THRESH
  cpuidle: fix permission for driver name sysfs node
  cpuidle: move idle traces to cpuidle_enter_state()
parents 7672b969 dd38c9d3

drivers/cpuidle/Kconfig

+1 −6
Original line number Diff line number Diff line
@@ -15,12 +15,7 @@ config CPU_IDLE 
if CPU_IDLE



config CPU_IDLE_MULTIPLE_DRIVERS

        bool "Support multiple cpuidle drivers"

        default n

        help

         Allows the cpuidle framework to use different drivers for each CPU.

         This is useful if you have a system with different CPU latencies and

         states. If unsure say N.

        bool



config CPU_IDLE_GOV_LADDER

	bool "Ladder governor (for periodic timer tick)"

drivers/cpuidle/Kconfig.arm

+1 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ config ARM_ARMADA_370_XP_CPUIDLE 
config ARM_BIG_LITTLE_CPUIDLE

	bool "Support for ARM big.LITTLE processors"

	depends on ARCH_VEXPRESS_TC2_PM

	depends on MCPM

	select ARM_CPU_SUSPEND

	select CPU_IDLE_MULTIPLE_DRIVERS

	help

drivers/cpuidle/cpuidle.c

+2 −0
Original line number Diff line number Diff line
@@ -119,11 +119,13 @@ int cpuidle_enter_state(struct cpuidle_device *dev, struct cpuidle_driver *drv, 
	ktime_t time_start, time_end;

	s64 diff;



	trace_cpu_idle_rcuidle(index, dev->cpu);

	time_start = ktime_get();



	entered_state = target_state->enter(dev, drv, index);



	time_end = ktime_get();

	trace_cpu_idle_rcuidle(PWR_EVENT_EXIT, dev->cpu);



	if (!cpuidle_state_is_coupled(dev, drv, entered_state))

		local_irq_enable();

drivers/cpuidle/driver.c

+0 −11
Original line number Diff line number Diff line
@@ -182,10 +182,6 @@ static void __cpuidle_driver_init(struct cpuidle_driver *drv) 
static int poll_idle(struct cpuidle_device *dev,

		struct cpuidle_driver *drv, int index)

{

	ktime_t	t1, t2;

	s64 diff;



	t1 = ktime_get();

	local_irq_enable();

	if (!current_set_polling_and_test()) {

		while (!need_resched())
@@ -193,13 +189,6 @@ static int poll_idle(struct cpuidle_device *dev, 
	}

	current_clr_polling();



	t2 = ktime_get();

	diff = ktime_to_us(ktime_sub(t2, t1));

	if (diff > INT_MAX)

		diff = INT_MAX;



	dev->last_residency = (int) diff;



	return index;

}

drivers/cpuidle/governors/ladder.c

+2 −2
Original line number Diff line number Diff line
@@ -144,7 +144,7 @@ static int ladder_enable_device(struct cpuidle_driver *drv, 


	ldev->last_state_idx = CPUIDLE_DRIVER_STATE_START;



	for (i = 0; i < drv->state_count; i++) {

	for (i = CPUIDLE_DRIVER_STATE_START; i < drv->state_count; i++) {

		state = &drv->states[i];

		lstate = &ldev->states[i];
@@ -156,7 +156,7 @@ static int ladder_enable_device(struct cpuidle_driver *drv, 


		if (i < drv->state_count - 1)

			lstate->threshold.promotion_time = state->exit_latency;

		if (i > 0)

		if (i > CPUIDLE_DRIVER_STATE_START)

			lstate->threshold.demotion_time = state->exit_latency;

	}

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