tools/perf/arch/s390/util/pmu.c

File Facts

System

Linux kernel

Corpus path

tools/perf/arch/s390/util/pmu.c

Extension

.c

Size

500 bytes

Lines

23

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

• string.h
• ../../../util/pmu.h

Detected Declarations

• function Author

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0

/*
 * Copyright IBM Corp. 2023
 * Author(s): Thomas Richter <tmricht@linux.ibm.com>
 */

#include <string.h>

#include "../../../util/pmu.h"

#define	S390_PMUPAI_CRYPTO	"pai_crypto"
#define	S390_PMUPAI_EXT		"pai_ext"
#define	S390_PMUCPUM_CF		"cpum_cf"

void perf_pmu__arch_init(struct perf_pmu *pmu)
{
	if (!strcmp(pmu->name, S390_PMUPAI_CRYPTO) ||
	    !strcmp(pmu->name, S390_PMUPAI_EXT) ||
	    !strcmp(pmu->name, S390_PMUCPUM_CF))
		pmu->selectable = true;
}

Annotation

• Immediate include surface: `string.h`, `../../../util/pmu.h`.
• Detected declarations: `function Author`.
• 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.