tools/perf/util/dwarf-regs-arch/dwarf-regs-arm.c

File Facts

System

Linux kernel

Corpus path

tools/perf/util/dwarf-regs-arch/dwarf-regs-arm.c

Extension

.c

Size

299 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.

Dependency Surface

• errno.h
• dwarf-regs.h
• ../../../arch/arm/include/uapi/asm/perf_regs.h

Detected Declarations

• function __get_dwarf_regnum_for_perf_regnum_arm

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
#include <errno.h>
#include <dwarf-regs.h>
#include "../../../arch/arm/include/uapi/asm/perf_regs.h"

int __get_dwarf_regnum_for_perf_regnum_arm(int perf_regnum)
{
	if (perf_regnum < 0 || perf_regnum >= PERF_REG_ARM_MAX)
		return -ENOENT;

	return perf_regnum;
}

Annotation

• Immediate include surface: `errno.h`, `dwarf-regs.h`, `../../../arch/arm/include/uapi/asm/perf_regs.h`.
• Detected declarations: `function __get_dwarf_regnum_for_perf_regnum_arm`.
• 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.