arch/arm/include/asm/thread_notify.h

File Facts

System

Linux kernel

Corpus path

arch/arm/include/asm/thread_notify.h

Extension

.h

Size

1086 bytes

Lines

47

Domain

Architecture Layer

Bucket

arch/arm

Inferred role

Architecture Layer: implementation source

Status

source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
• 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/notifier.h
• asm/thread_info.h

Detected Declarations

• function Copyright
• function thread_unregister_notifier
• function thread_notify

Annotated Snippet

#ifndef ASMARM_THREAD_NOTIFY_H
#define ASMARM_THREAD_NOTIFY_H

#ifdef __KERNEL__

#ifndef __ASSEMBLY__

#include <linux/notifier.h>
#include <asm/thread_info.h>

static inline int thread_register_notifier(struct notifier_block *n)
{
	extern struct atomic_notifier_head thread_notify_head;
	return atomic_notifier_chain_register(&thread_notify_head, n);
}

static inline void thread_unregister_notifier(struct notifier_block *n)
{
	extern struct atomic_notifier_head thread_notify_head;
	atomic_notifier_chain_unregister(&thread_notify_head, n);
}

static inline void thread_notify(unsigned long rc, struct thread_info *thread)
{
	extern struct atomic_notifier_head thread_notify_head;
	atomic_notifier_call_chain(&thread_notify_head, rc, thread);
}

#endif

/*
 * These are the reason codes for the thread notifier.
 */
#define THREAD_NOTIFY_FLUSH	0
#define THREAD_NOTIFY_EXIT	1
#define THREAD_NOTIFY_SWITCH	2
#define THREAD_NOTIFY_COPY	3

#endif
#endif

Annotation

• Immediate include surface: `linux/notifier.h`, `asm/thread_info.h`.
• Detected declarations: `function Copyright`, `function thread_unregister_notifier`, `function thread_notify`.
• Atlas domain: Architecture Layer / arch/arm.
• Implementation status: source 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.