cregit-Linux how code gets into the kernel

Release 4.7 include/linux/pm_runtime.h

Directory: include/linux
/*
 * pm_runtime.h - Device run-time power management helper functions.
 *
 * Copyright (C) 2009 Rafael J. Wysocki <rjw@sisk.pl>
 *
 * This file is released under the GPLv2.
 */

#ifndef _LINUX_PM_RUNTIME_H

#define _LINUX_PM_RUNTIME_H

#include <linux/device.h>
#include <linux/notifier.h>
#include <linux/pm.h>

#include <linux/jiffies.h>

/* Runtime PM flag argument bits */

#define RPM_ASYNC		0x01	
/* Request is asynchronous */

#define RPM_NOWAIT		0x02	
/* Don't wait for concurrent
                                            state change */

#define RPM_GET_PUT		0x04	
/* Increment/decrement the
                                            usage_count */

#define RPM_AUTO		0x08	
/* Use autosuspend_delay */

#ifdef CONFIG_PM
extern struct workqueue_struct *pm_wq;


static inline bool queue_pm_work(struct work_struct *work) { return queue_work(pm_wq, work); }

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extern int pm_generic_runtime_suspend(struct device *dev); extern int pm_generic_runtime_resume(struct device *dev); extern int pm_runtime_force_suspend(struct device *dev); extern int pm_runtime_force_resume(struct device *dev); extern int __pm_runtime_idle(struct device *dev, int rpmflags); extern int __pm_runtime_suspend(struct device *dev, int rpmflags); extern int __pm_runtime_resume(struct device *dev, int rpmflags); extern int pm_runtime_get_if_in_use(struct device *dev); extern int pm_schedule_suspend(struct device *dev, unsigned int delay); extern int __pm_runtime_set_status(struct device *dev, unsigned int status); extern int pm_runtime_barrier(struct device *dev); extern void pm_runtime_enable(struct device *dev); extern void __pm_runtime_disable(struct device *dev, bool check_resume); extern void pm_runtime_allow(struct device *dev); extern void pm_runtime_forbid(struct device *dev); extern void pm_runtime_no_callbacks(struct device *dev); extern void pm_runtime_irq_safe(struct device *dev); extern void __pm_runtime_use_autosuspend(struct device *dev, bool use); extern void pm_runtime_set_autosuspend_delay(struct device *dev, int delay); extern unsigned long pm_runtime_autosuspend_expiration(struct device *dev); extern void pm_runtime_update_max_time_suspended(struct device *dev, s64 delta_ns); extern void pm_runtime_set_memalloc_noio(struct device *dev, bool enable);
static inline void pm_suspend_ignore_children(struct device *dev, bool enable) { dev->power.ignore_children = enable; }

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static inline bool pm_children_suspended(struct device *dev) { return dev->power.ignore_children || !atomic_read(&dev->power.child_count); }

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static inline void pm_runtime_get_noresume(struct device *dev) { atomic_inc(&dev->power.usage_count); }

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static inline void pm_runtime_put_noidle(struct device *dev) { atomic_add_unless(&dev->power.usage_count, -1, 0); }

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static inline bool device_run_wake(struct device *dev) { return dev->power.run_wake; }

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static inline void device_set_run_wake(struct device *dev, bool enable) { dev->power.run_wake = enable; }

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static inline bool pm_runtime_suspended(struct device *dev) { return dev->power.runtime_status == RPM_SUSPENDED && !dev->power.disable_depth; }

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static inline bool pm_runtime_active(struct device *dev) { return dev->power.runtime_status == RPM_ACTIVE || dev->power.disable_depth; }

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static inline bool pm_runtime_status_suspended(struct device *dev) { return dev->power.runtime_status == RPM_SUSPENDED; }

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static inline bool pm_runtime_enabled(struct device *dev) { return !dev->power.disable_depth; }

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static inline bool pm_runtime_callbacks_present(struct device *dev) { return !dev->power.no_callbacks; }

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static inline void pm_runtime_mark_last_busy(struct device *dev) { ACCESS_ONCE(dev->power.last_busy) = jiffies; }

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static inline bool pm_runtime_is_irq_safe(struct device *dev) { return dev->power.irq_safe; }

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#else /* !CONFIG_PM */
static inline bool queue_pm_work(struct work_struct *work) { return false; }

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static inline int pm_generic_runtime_suspend(struct device *dev) { return 0; }

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static inline int pm_generic_runtime_resume(struct device *dev) { return 0; }

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static inline int pm_runtime_force_suspend(struct device *dev) { return 0; }

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static inline int pm_runtime_force_resume(struct device *dev) { return 0; }

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static inline int __pm_runtime_idle(struct device *dev, int rpmflags) { return -ENOSYS; }

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static inline int __pm_runtime_suspend(struct device *dev, int rpmflags) { return -ENOSYS; }

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static inline int __pm_runtime_resume(struct device *dev, int rpmflags) { return 1; }

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static inline int pm_schedule_suspend(struct device *dev, unsigned int delay) { return -ENOSYS; }

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static inline int pm_runtime_get_if_in_use(struct device *dev) { return -EINVAL; }

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static inline int __pm_runtime_set_status(struct device *dev, unsigned int status) { return 0; }

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static inline int pm_runtime_barrier(struct device *dev) { return 0; }

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static inline void pm_runtime_enable(struct device *dev) {}

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static inline void __pm_runtime_disable(struct device *dev, bool c) {}

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static inline void pm_runtime_allow(struct device *dev) {}

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static inline void pm_runtime_forbid(struct device *dev) {}

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static inline void pm_suspend_ignore_children(struct device *dev, bool enable) {}

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static inline bool pm_children_suspended(struct device *dev) { return false; }

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static inline void pm_runtime_get_noresume(struct device *dev) {}

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static inline void pm_runtime_put_noidle(struct device *dev) {}

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static inline bool device_run_wake(struct device *dev) { return false; }

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static inline void device_set_run_wake(struct device *dev, bool enable) {}

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static inline bool pm_runtime_suspended(struct device *dev) { return false; }

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static inline bool pm_runtime_active(struct device *dev) { return true; }

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static inline bool pm_runtime_status_suspended(struct device *dev) { return false; }

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static inline bool pm_runtime_enabled(struct device *dev) { return false; }

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static inline void pm_runtime_no_callbacks(struct device *dev) {}

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static inline void pm_runtime_irq_safe(struct device *dev) {}

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static inline bool pm_runtime_is_irq_safe(struct device *dev) { return false; }

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static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; }

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static inline void pm_runtime_mark_last_busy(struct device *dev) {}

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static inline void __pm_runtime_use_autosuspend(struct device *dev, bool use) {}

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static inline void pm_runtime_set_autosuspend_delay(struct device *dev, int delay) {}

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static inline unsigned long pm_runtime_autosuspend_expiration( struct device *dev) { return 0; }

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static inline void pm_runtime_set_memalloc_noio(struct device *dev, bool enable){}

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#endif /* !CONFIG_PM */
static inline int pm_runtime_idle(struct device *dev) { return __pm_runtime_idle(dev, 0); }

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static inline int pm_runtime_suspend(struct device *dev) { return __pm_runtime_suspend(dev, 0); }

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static inline int pm_runtime_autosuspend(struct device *dev) { return __pm_runtime_suspend(dev, RPM_AUTO); }

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static inline int pm_runtime_resume(struct device *dev) { return __pm_runtime_resume(dev, 0); }

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static inline int pm_request_idle(struct device *dev) { return __pm_runtime_idle(dev, RPM_ASYNC); }

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static inline int pm_request_resume(struct device *dev) { return __pm_runtime_resume(dev, RPM_ASYNC); }

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static inline int pm_request_autosuspend(struct device *dev) { return __pm_runtime_suspend(dev, RPM_ASYNC | RPM_AUTO); }

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static inline int pm_runtime_get(struct device *dev) { return __pm_runtime_resume(dev, RPM_GET_PUT | RPM_ASYNC); }

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static inline int pm_runtime_get_sync(struct device *dev) { return __pm_runtime_resume(dev, RPM_GET_PUT); }

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static inline int pm_runtime_put(struct device *dev) { return __pm_runtime_idle(dev, RPM_GET_PUT | RPM_ASYNC); }

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static inline int pm_runtime_put_autosuspend(struct device *dev) { return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_ASYNC | RPM_AUTO); }

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static inline int pm_runtime_put_sync(struct device *dev) { return __pm_runtime_idle(dev, RPM_GET_PUT); }

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static inline int pm_runtime_put_sync_suspend(struct device *dev) { return __pm_runtime_suspend(dev, RPM_GET_PUT); }

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static inline int pm_runtime_put_sync_autosuspend(struct device *dev) { return __pm_runtime_suspend(dev, RPM_GET_PUT | RPM_AUTO); }

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static inline int pm_runtime_set_active(struct device *dev) { return __pm_runtime_set_status(dev, RPM_ACTIVE); }

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static inline void pm_runtime_set_suspended(struct device *dev) { __pm_runtime_set_status(dev, RPM_SUSPENDED); }

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static inline void pm_runtime_disable(struct device *dev) { __pm_runtime_disable(dev, true); }

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static inline void pm_runtime_use_autosuspend(struct device *dev) { __pm_runtime_use_autosuspend(dev, true); }

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static inline void pm_runtime_dont_use_autosuspend(struct device *dev) { __pm_runtime_use_autosuspend(dev, false); }

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#endif

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alan sternalan stern44228.91%519.23%
ulf hanssonulf hansson785.10%311.54%
liu shuoxliu shuox422.75%13.85%
kevin hilmankevin hilman362.35%13.85%
krzysztof kozlowskikrzysztof kozlowski342.22%13.85%
ming leiming lei271.77%13.85%
lei minglei ming221.44%13.85%
paul gortmakerpaul gortmaker30.20%13.85%
Total1529100.00%26100.00%
Directory: include/linux
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