arch/s390/include/asm/cpu.h

File Facts

System

Linux kernel

Corpus path

arch/s390/include/asm/cpu.h

Extension

.h

Size

622 bytes

Lines

29

Domain

Architecture Layer

Bucket

arch/s390

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

• linux/types.h
• linux/jump_label.h

Detected Declarations

• struct cpuid

Annotated Snippet

#ifndef _ASM_S390_CPU_H
#define _ASM_S390_CPU_H

#ifndef __ASSEMBLER__

#include <linux/types.h>
#include <linux/jump_label.h>

struct cpuid
{
	unsigned int version :	8;
	unsigned int ident   : 24;
	unsigned int machine : 16;
	unsigned int unused  : 16;
} __attribute__ ((packed, aligned(8)));

DECLARE_STATIC_KEY_FALSE(cpu_has_bear);

#endif /* __ASSEMBLER__ */
#endif /* _ASM_S390_CPU_H */

Annotation

• Immediate include surface: `linux/types.h`, `linux/jump_label.h`.
• Detected declarations: `struct cpuid`.
• Atlas domain: Architecture Layer / arch/s390.
• 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.