arch/loongarch/include/asm/cpufeature.h

File Facts

System

Linux kernel

Corpus path

arch/loongarch/include/asm/cpufeature.h

Extension

.h

Size

576 bytes

Lines

25

Domain

Architecture Layer

Bucket

arch/loongarch

Inferred role

Architecture Layer: implementation source

Status

source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

• uapi/asm/hwcap.h
• asm/elf.h

Detected Declarations

• function module_cpu_feature_match

Annotated Snippet

#ifndef __ASM_CPUFEATURE_H
#define __ASM_CPUFEATURE_H

#include <uapi/asm/hwcap.h>
#include <asm/elf.h>

#define MAX_CPU_FEATURES (8 * sizeof(elf_hwcap))

#define cpu_feature(x)		ilog2(HWCAP_ ## x)

static inline bool cpu_have_feature(unsigned int num)
{
	return elf_hwcap & (1UL << num);
}

#endif /* __ASM_CPUFEATURE_H */

Annotation

• Immediate include surface: `uapi/asm/hwcap.h`, `asm/elf.h`.
• Detected declarations: `function module_cpu_feature_match`.
• Atlas domain: Architecture Layer / arch/loongarch.
• 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.