tools/perf/util/smt.h

File Facts

System

Linux kernel

Corpus path

tools/perf/util/smt.h

Extension

.h

Size

408 bytes

Lines

18

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.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

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

Annotated Snippet

#ifndef __SMT_H
#define __SMT_H 1

/*
 * Returns true if SMT (aka hyperthreading) is enabled. Determined via sysfs or
 * the online topology.
 */
bool smt_on(void);

/*
 * Returns true when system wide and all SMT threads for a core are in the
 * user_requested_cpus map.
 */
bool core_wide(bool system_wide, const char *user_requested_cpu_list);

#endif /* __SMT_H */

Annotation

• 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.