arch/x86/include/asm/timer.h

File Facts

System

Linux kernel

Corpus path

arch/x86/include/asm/timer.h

Extension

.h

Size

1039 bytes

Lines

38

Domain

Architecture Layer

Bucket

arch/x86

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/pm.h
• linux/percpu.h
• linux/interrupt.h
• linux/math64.h

Detected Declarations

• struct cyc2ns_data

Annotated Snippet

struct cyc2ns_data {
	u32 cyc2ns_mul;
	u32 cyc2ns_shift;
	u64 cyc2ns_offset;
}; /* 16 bytes */

extern void cyc2ns_read_begin(struct cyc2ns_data *);
extern void cyc2ns_read_end(void);

#endif /* _ASM_X86_TIMER_H */

Annotation

• Immediate include surface: `linux/pm.h`, `linux/percpu.h`, `linux/interrupt.h`, `linux/math64.h`.
• Detected declarations: `struct cyc2ns_data`.
• Atlas domain: Architecture Layer / arch/x86.
• 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.