tools/perf/arch/arm64/util/machine.c

File Facts

System

Linux kernel

Corpus path

tools/perf/arch/arm64/util/machine.c

Extension

.c

Size

322 bytes

Lines

13

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

• callchain.h
• perf_regs.h
• record.h

Detected Declarations

• function arch__add_leaf_frame_record_opts

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0

#include "callchain.h" // prototype of arch__add_leaf_frame_record_opts
#include "perf_regs.h"
#include "record.h"

#define SMPL_REG_MASK(b) (1ULL << (b))

void arch__add_leaf_frame_record_opts(struct record_opts *opts)
{
	opts->sample_user_regs |= SMPL_REG_MASK(PERF_REG_ARM64_LR);
}

Annotation

• Immediate include surface: `callchain.h`, `perf_regs.h`, `record.h`.
• Detected declarations: `function arch__add_leaf_frame_record_opts`.
• 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.