arch/arm/kernel/signal.h

File Facts

System

Linux kernel

Corpus path

arch/arm/kernel/signal.h

Extension

.h

Size

209 bytes

Lines

14

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

Dependency Surface

• asm/ucontext.h

Detected Declarations

• struct sigframe
• struct rt_sigframe

Annotated Snippet

struct sigframe {
	struct ucontext uc;
	unsigned long retcode[4];
};

struct rt_sigframe {
	struct siginfo info;
	struct sigframe sig;
};

extern struct page *get_signal_page(void);

Annotation

• Immediate include surface: `asm/ucontext.h`.
• Detected declarations: `struct sigframe`, `struct rt_sigframe`.
• Atlas domain: Architecture Layer / arch/arm.
• Implementation status: source 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.