tools/perf/arch/powerpc/util/utils_header.h

File Facts

System

Linux kernel

Corpus path

tools/perf/arch/powerpc/util/utils_header.h

Extension

.h

Size

493 bytes

Lines

16

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

• linux/stringify.h

Detected Declarations

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

Annotated Snippet

#ifndef __PERF_UTIL_HEADER_H
#define __PERF_UTIL_HEADER_H

#include <linux/stringify.h>

#define mfspr(rn)       ({unsigned long rval; \
			asm volatile("mfspr %0," __stringify(rn) \
				: "=r" (rval)); rval; })

#define SPRN_PVR        0x11F   /* Processor Version Register */
#define PVR_VER(pvr)    (((pvr) >>  16) & 0xFFFF) /* Version field */
#define PVR_REV(pvr)    (((pvr) >>   0) & 0xFFFF) /* Revision field */

#endif /* __PERF_UTIL_HEADER_H */

Annotation

• Immediate include surface: `linux/stringify.h`.
• 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.