arch/sh/include/asm/heartbeat.h

File Facts

System

Linux kernel

Corpus path

arch/sh/include/asm/heartbeat.h

Extension

.h

Size

383 bytes

Lines

20

Domain

Architecture Layer

Bucket

arch/sh

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/timer.h

Detected Declarations

• struct heartbeat_data

Annotated Snippet

struct heartbeat_data {
	void __iomem *base;
	unsigned char *bit_pos;
	unsigned int nr_bits;
	struct timer_list timer;
	unsigned int regsize;
	unsigned int mask;
	unsigned long flags;
};

#endif /* __ASM_SH_HEARTBEAT_H */

Annotation

• Immediate include surface: `linux/timer.h`.
• Detected declarations: `struct heartbeat_data`.
• Atlas domain: Architecture Layer / arch/sh.
• 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.