Commit 721b50ee authored by Rafael J. Wysocki's avatar Rafael J. Wysocki
Browse files

Merge branch 'pm-cpuidle' 

* pm-cpuidle:
  cpuidle: rename function name "__cpuidle_register_driver", v2
  cpuidle: remove some empty lines
  cpuidle / ACPI : move cpuidle_device field out of the acpi_processor_power structure
parents 59f3b797 ed953472

drivers/acpi/processor_idle.c

+24 −8
Original line number Diff line number Diff line
@@ -79,6 +79,8 @@ module_param(bm_check_disable, uint, 0000); 
static unsigned int latency_factor __read_mostly = 2;

module_param(latency_factor, uint, 0644);



static DEFINE_PER_CPU(struct cpuidle_device *, acpi_cpuidle_device);



static int disabled_by_idle_boot_param(void)

{

	return boot_option_idle_override == IDLE_POLL ||
@@ -998,7 +1000,7 @@ static int acpi_processor_setup_cpuidle_cx(struct acpi_processor *pr) 
	int i, count = CPUIDLE_DRIVER_STATE_START;

	struct acpi_processor_cx *cx;

	struct cpuidle_state_usage *state_usage;

	struct cpuidle_device *dev = &pr->power.dev;

	struct cpuidle_device *dev = per_cpu(acpi_cpuidle_device, pr->id);



	if (!pr->flags.power_setup_done)

		return -EINVAL;
@@ -1130,6 +1132,7 @@ static int acpi_processor_setup_cpuidle_states(struct acpi_processor *pr) 
int acpi_processor_hotplug(struct acpi_processor *pr)

{

	int ret = 0;

	struct cpuidle_device *dev = per_cpu(acpi_cpuidle_device, pr->id);



	if (disabled_by_idle_boot_param())

		return 0;
@@ -1145,11 +1148,11 @@ int acpi_processor_hotplug(struct acpi_processor *pr) 
		return -ENODEV;



	cpuidle_pause_and_lock();

	cpuidle_disable_device(&pr->power.dev);

	cpuidle_disable_device(dev);

	acpi_processor_get_power_info(pr);

	if (pr->flags.power) {

		acpi_processor_setup_cpuidle_cx(pr);

		ret = cpuidle_enable_device(&pr->power.dev);

		ret = cpuidle_enable_device(dev);

	}

	cpuidle_resume_and_unlock();
@@ -1160,6 +1163,7 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr) 
{

	int cpu;

	struct acpi_processor *_pr;

	struct cpuidle_device *dev;



	if (disabled_by_idle_boot_param())

		return 0;
@@ -1190,7 +1194,8 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr) 
			_pr = per_cpu(processors, cpu);

			if (!_pr || !_pr->flags.power_setup_done)

				continue;

			cpuidle_disable_device(&_pr->power.dev);

			dev = per_cpu(acpi_cpuidle_device, cpu);

			cpuidle_disable_device(dev);

		}



		/* Populate Updated C-state information */
@@ -1204,7 +1209,8 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr) 
			acpi_processor_get_power_info(_pr);

			if (_pr->flags.power) {

				acpi_processor_setup_cpuidle_cx(_pr);

				cpuidle_enable_device(&_pr->power.dev);

				dev = per_cpu(acpi_cpuidle_device, cpu);

				cpuidle_enable_device(dev);

			}

		}

		put_online_cpus();
@@ -1220,6 +1226,7 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr) 
{

	acpi_status status = 0;

	int retval;

	struct cpuidle_device *dev;

	static int first_run;



	if (disabled_by_idle_boot_param())
@@ -1265,11 +1272,18 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr) 
			printk(KERN_DEBUG "ACPI: %s registered with cpuidle\n",

					acpi_idle_driver.name);

		}



		dev = kzalloc(sizeof(*dev), GFP_KERNEL);

		if (!dev)

			return -ENOMEM;

		per_cpu(acpi_cpuidle_device, pr->id) = dev;



		acpi_processor_setup_cpuidle_cx(pr);



		/* Register per-cpu cpuidle_device. Cpuidle driver

		 * must already be registered before registering device

		 */

		acpi_processor_setup_cpuidle_cx(pr);

		retval = cpuidle_register_device(&pr->power.dev);

		retval = cpuidle_register_device(dev);

		if (retval) {

			if (acpi_processor_registered == 0)

				cpuidle_unregister_driver(&acpi_idle_driver);
@@ -1282,11 +1296,13 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr) 


int acpi_processor_power_exit(struct acpi_processor *pr)

{

	struct cpuidle_device *dev = per_cpu(acpi_cpuidle_device, pr->id);



	if (disabled_by_idle_boot_param())

		return 0;



	if (pr->flags.power) {

		cpuidle_unregister_device(&pr->power.dev);

		cpuidle_unregister_device(dev);

		acpi_processor_registered--;

		if (acpi_processor_registered == 0)

			cpuidle_unregister_driver(&acpi_idle_driver);

drivers/cpuidle/driver.c

+9 −9
Original line number Diff line number Diff line
@@ -18,9 +18,10 @@ static struct cpuidle_driver *cpuidle_curr_driver; 
DEFINE_SPINLOCK(cpuidle_driver_lock);

int cpuidle_driver_refcount;



static void __cpuidle_register_driver(struct cpuidle_driver *drv)

static void set_power_states(struct cpuidle_driver *drv)

{

	int i;



	/*

	 * cpuidle driver should set the drv->power_specified bit

	 * before registering if the driver provides
@@ -35,12 +36,9 @@ static void __cpuidle_register_driver(struct cpuidle_driver *drv) 
	 * an power value of -1.  So we use -2, -3, etc, for other

	 * c-states.

	 */

	if (!drv->power_specified) {

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

		drv->states[i].power_usage = -1 - i;

}

}





/**

 * cpuidle_register_driver - registers a driver
@@ -59,13 +57,16 @@ int cpuidle_register_driver(struct cpuidle_driver *drv) 
		spin_unlock(&cpuidle_driver_lock);

		return -EBUSY;

	}

	__cpuidle_register_driver(drv);



	if (!drv->power_specified)

		set_power_states(drv);



	cpuidle_curr_driver = drv;



	spin_unlock(&cpuidle_driver_lock);



	return 0;

}



EXPORT_SYMBOL_GPL(cpuidle_register_driver);



/**
@@ -96,7 +97,6 @@ void cpuidle_unregister_driver(struct cpuidle_driver *drv) 


	spin_unlock(&cpuidle_driver_lock);

}



EXPORT_SYMBOL_GPL(cpuidle_unregister_driver);



struct cpuidle_driver *cpuidle_driver_ref(void)

include/acpi/processor.h

+0 −2
Original line number Diff line number Diff line
@@ -3,7 +3,6 @@ 


#include <linux/kernel.h>

#include <linux/cpu.h>

#include <linux/cpuidle.h>

#include <linux/thermal.h>

#include <asm/acpi.h>
@@ -64,7 +63,6 @@ struct acpi_processor_cx { 
};



struct acpi_processor_power {

	struct cpuidle_device dev;

	struct acpi_processor_cx *state;

	unsigned long bm_check_timestamp;

	u32 default_state;

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