tools/perf/util/affinity.h

File Facts

System

Linux kernel

Corpus path

tools/perf/util/affinity.h

Extension

.h

Size

446 bytes

Lines

20

Domain

Support Tooling And Documentation

Bucket

tools

Inferred role

Support Tooling And Documentation: implementation source

Status

source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• stdbool.h

Detected Declarations

• struct perf_cpu_map
• struct affinity

Annotated Snippet

struct affinity {
	unsigned long *orig_cpus;
	unsigned long *sched_cpus;
	bool changed;
};

void affinity__cleanup(struct affinity *a);
void affinity__set(struct affinity *a, int cpu);
int affinity__setup(struct affinity *a);
void cpu_map__set_affinity(const struct perf_cpu_map *cpumap);

#endif // PERF_AFFINITY_H

Annotation

• Immediate include surface: `stdbool.h`.
• Detected declarations: `struct perf_cpu_map`, `struct affinity`.
• Atlas domain: Support Tooling And Documentation / tools.
• 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.