kernel/irq/pm.c

File Facts

System

Linux kernel

Corpus path

kernel/irq/pm.c

Extension

.c

Size

6272 bytes

Lines

250

Domain

Core OS

Bucket

Scheduler, Processes, Timers, Sync, And Syscalls

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/irq.h
• linux/module.h
• linux/interrupt.h
• linux/suspend.h
• linux/syscore_ops.h
• internals.h

Detected Declarations

• function Copyright
• function __setup_irq
• function __free_irq
• function suspend_device_irq
• function suspend_device_irqs
• function for_each_irq_desc
• function resume_irq
• function resume_irqs
• function for_each_irq_desc
• function rearm_wake_irq
• function irq_pm_syscore_resume
• function irq_pm_init_ops
• function suspend_device_irqs
• module init irq_pm_init_ops

Annotated Snippet

device_initcall(irq_pm_init_ops);

/**
 * resume_device_irqs - enable interrupt lines disabled by suspend_device_irqs()
 *
 * Enable all non-%IRQF_EARLY_RESUME interrupt lines previously
 * disabled by suspend_device_irqs() that have the IRQS_SUSPENDED flag
 * set as well as those with %IRQF_FORCE_RESUME.
 */
void resume_device_irqs(void)
{
	resume_irqs(false);
}

Annotation

• Immediate include surface: `linux/irq.h`, `linux/module.h`, `linux/interrupt.h`, `linux/suspend.h`, `linux/syscore_ops.h`, `internals.h`.
• Detected declarations: `function Copyright`, `function __setup_irq`, `function __free_irq`, `function suspend_device_irq`, `function suspend_device_irqs`, `function for_each_irq_desc`, `function resume_irq`, `function resume_irqs`, `function for_each_irq_desc`, `function rearm_wake_irq`.
• Atlas domain: Core OS / Scheduler, Processes, Timers, Sync, And Syscalls.
• Implementation status: integration implementation candidate.

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.