arch/s390/include/asm/cputime.h

File Facts

System

Linux kernel

Corpus path

arch/s390/include/asm/cputime.h

Extension

.h

Size

393 bytes

Lines

22

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.

Dependency Surface

• linux/types.h
• asm/timex.h

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#ifndef _S390_CPUTIME_H
#define _S390_CPUTIME_H

#include <linux/types.h>
#include <asm/timex.h>

/*
 * Convert cputime to nanoseconds.
 */
#define cputime_to_nsecs(cputime) tod_to_ns(cputime)

void account_idle_time_irq(void);

#endif /* _S390_CPUTIME_H */

Annotation

• Immediate include surface: `linux/types.h`, `asm/timex.h`.
• 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.