arch/arm64/kernel/watchdog_hld.c

File Facts

System

Linux kernel

Corpus path

arch/arm64/kernel/watchdog_hld.c

Extension

.c

Size

3078 bytes

Lines

95

Domain

Architecture Layer

Bucket

arch/arm64

Inferred role

Architecture Layer: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/nmi.h
• linux/cpufreq.h
• linux/perf/arm_pmu.h

Detected Declarations

• function slower
• function arch_perf_nmi_is_available
• function watchdog_perf_update_period
• function watchdog_freq_notifier_callback
• function init_watchdog_freq_notifier
• module init init_watchdog_freq_notifier

Annotated Snippet

core_initcall(init_watchdog_freq_notifier);

Annotation

• Immediate include surface: `linux/nmi.h`, `linux/cpufreq.h`, `linux/perf/arm_pmu.h`.
• Detected declarations: `function slower`, `function arch_perf_nmi_is_available`, `function watchdog_perf_update_period`, `function watchdog_freq_notifier_callback`, `function init_watchdog_freq_notifier`, `module init init_watchdog_freq_notifier`.
• Atlas domain: Architecture Layer / arch/arm64.
• Implementation status: integration 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.