Release 4.7 drivers/cpuidle/cpuidle.h

/*
 * cpuidle.h - The internal header file
 */

#ifndef __DRIVER_CPUIDLE_H

#define __DRIVER_CPUIDLE_H

/* For internal use only */
extern struct cpuidle_governor *cpuidle_curr_governor;
extern struct list_head cpuidle_governors;
extern struct list_head cpuidle_detected_devices;
extern struct mutex cpuidle_lock;
extern spinlock_t cpuidle_driver_lock;
extern int cpuidle_disabled(void);
extern int cpuidle_enter_state(struct cpuidle_device *dev,
		struct cpuidle_driver *drv, int next_state);

/* idle loop */
extern void cpuidle_install_idle_handler(void);
extern void cpuidle_uninstall_idle_handler(void);

/* governors */
extern int cpuidle_switch_governor(struct cpuidle_governor *gov);

/* sysfs */

struct device;

extern int cpuidle_add_interface(struct device *dev);
extern void cpuidle_remove_interface(struct device *dev);
extern int cpuidle_add_device_sysfs(struct cpuidle_device *device);
extern void cpuidle_remove_device_sysfs(struct cpuidle_device *device);
extern int cpuidle_add_sysfs(struct cpuidle_device *dev);
extern void cpuidle_remove_sysfs(struct cpuidle_device *dev);

#ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED
bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state);
int cpuidle_coupled_state_verify(struct cpuidle_driver *drv);
int cpuidle_enter_state_coupled(struct cpuidle_device *dev,
		struct cpuidle_driver *drv, int next_state);
int cpuidle_coupled_register_device(struct cpuidle_device *dev);
void cpuidle_coupled_unregister_device(struct cpuidle_device *dev);
#else

static inline

bool cpuidle_state_is_coupled(struct cpuidle_driver *drv, int state)
{
	return false;
}

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static inline int cpuidle_coupled_state_verify(struct cpuidle_driver *drv)
{
	return 0;
}

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static inline int cpuidle_enter_state_coupled(struct cpuidle_device *dev,
		struct cpuidle_driver *drv, int next_state)
{
	return -1;
}

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static inline int cpuidle_coupled_register_device(struct cpuidle_device *dev)
{
	return 0;
}

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static inline void cpuidle_coupled_unregister_device(struct cpuidle_device *dev)
{
}
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#endif

#endif /* __DRIVER_CPUIDLE_H */
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Directory: drivers/cpuidle

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