include/linux/pm.h

File Facts

System

Linux kernel

Corpus path

include/linux/pm.h

Extension

.h

Size

37678 bytes

Lines

914

Domain

Core OS

Bucket

Core Kernel Interface

Inferred role

Core OS: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/completion.h
• linux/export.h
• linux/hrtimer_types.h
• linux/mutex.h
• linux/spinlock.h
• linux/types.h
• linux/util_macros.h
• linux/wait.h
• linux/workqueue_types.h

Detected Declarations

• struct device
• struct dev_pm_ops
• struct wakeup_source
• struct wake_irq
• struct pm_domain_data
• struct pm_subsys_data
• struct dev_pm_info
• struct dev_pm_domain
• enum rpm_status
• enum rpm_request
• enum dpm_order
• function pm_vt_switch_required
• function pm_vt_switch_unregister
• function cxl_mem_active
• function EXPORT_SIMPLE_DEV_PM_OPS
• function dpm_suspend_start
• function device_pm_wait_for_dev
• function dpm_for_each_dev

Annotated Snippet

struct dev_pm_ops {
	int (*prepare)(struct device *dev);
	void (*complete)(struct device *dev);
	int (*suspend)(struct device *dev);
	int (*resume)(struct device *dev);
	int (*freeze)(struct device *dev);
	int (*thaw)(struct device *dev);
	int (*poweroff)(struct device *dev);
	int (*restore)(struct device *dev);
	int (*suspend_late)(struct device *dev);
	int (*resume_early)(struct device *dev);
	int (*freeze_late)(struct device *dev);
	int (*thaw_early)(struct device *dev);
	int (*poweroff_late)(struct device *dev);
	int (*restore_early)(struct device *dev);
	int (*suspend_noirq)(struct device *dev);
	int (*resume_noirq)(struct device *dev);
	int (*freeze_noirq)(struct device *dev);
	int (*thaw_noirq)(struct device *dev);
	int (*poweroff_noirq)(struct device *dev);
	int (*restore_noirq)(struct device *dev);
	int (*runtime_suspend)(struct device *dev);
	int (*runtime_resume)(struct device *dev);
	int (*runtime_idle)(struct device *dev);
};

#define SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
	.suspend = pm_sleep_ptr(suspend_fn), \
	.resume = pm_sleep_ptr(resume_fn), \
	.freeze = pm_sleep_ptr(suspend_fn), \
	.thaw = pm_sleep_ptr(resume_fn), \
	.poweroff = pm_sleep_ptr(suspend_fn), \
	.restore = pm_sleep_ptr(resume_fn),

#define LATE_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
	.suspend_late = pm_sleep_ptr(suspend_fn), \
	.resume_early = pm_sleep_ptr(resume_fn), \
	.freeze_late = pm_sleep_ptr(suspend_fn), \
	.thaw_early = pm_sleep_ptr(resume_fn), \
	.poweroff_late = pm_sleep_ptr(suspend_fn), \
	.restore_early = pm_sleep_ptr(resume_fn),

#define NOIRQ_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
	.suspend_noirq = pm_sleep_ptr(suspend_fn), \
	.resume_noirq = pm_sleep_ptr(resume_fn), \
	.freeze_noirq = pm_sleep_ptr(suspend_fn), \
	.thaw_noirq = pm_sleep_ptr(resume_fn), \
	.poweroff_noirq = pm_sleep_ptr(suspend_fn), \
	.restore_noirq = pm_sleep_ptr(resume_fn),

#define RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
	.runtime_suspend = suspend_fn, \
	.runtime_resume = resume_fn, \
	.runtime_idle = idle_fn,

#ifdef CONFIG_PM_SLEEP
#define SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
	SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn)
#else
#define SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn)
#endif

#ifdef CONFIG_PM_SLEEP
#define SET_LATE_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
	LATE_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn)
#else
#define SET_LATE_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn)
#endif

#ifdef CONFIG_PM_SLEEP
#define SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
	NOIRQ_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn)
#else
#define SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn)
#endif

#ifdef CONFIG_PM
#define SET_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn) \
	RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn)
#else
#define SET_RUNTIME_PM_OPS(suspend_fn, resume_fn, idle_fn)
#endif

#define _DEFINE_DEV_PM_OPS(name, \
			   suspend_fn, resume_fn, \
			   runtime_suspend_fn, runtime_resume_fn, idle_fn) \
const struct dev_pm_ops name = { \
	SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn) \
	RUNTIME_PM_OPS(runtime_suspend_fn, runtime_resume_fn, idle_fn) \
}

Annotation

• Immediate include surface: `linux/completion.h`, `linux/export.h`, `linux/hrtimer_types.h`, `linux/mutex.h`, `linux/spinlock.h`, `linux/types.h`, `linux/util_macros.h`, `linux/wait.h`.
• Detected declarations: `struct device`, `struct dev_pm_ops`, `struct wakeup_source`, `struct wake_irq`, `struct pm_domain_data`, `struct pm_subsys_data`, `struct dev_pm_info`, `struct dev_pm_domain`, `enum rpm_status`, `enum rpm_request`.
• Atlas domain: Core OS / Core Kernel Interface.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.