arch/loongarch/include/asm/perf_event.h

File Facts

System

Linux kernel

Corpus path

arch/loongarch/include/asm/perf_event.h

Extension

.h

Size

517 bytes

Lines

20

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• asm/ptrace.h

Detected Declarations

• function Copyright

Annotated Snippet

#ifndef __LOONGARCH_PERF_EVENT_H__
#define __LOONGARCH_PERF_EVENT_H__

#include <asm/ptrace.h>

#define perf_arch_bpf_user_pt_regs(regs) (struct user_pt_regs *)regs

#define perf_arch_fetch_caller_regs(regs, __ip) { \
	(regs)->csr_era = (__ip); \
	(regs)->regs[3] = (unsigned long) __builtin_frame_address(0); \
}

#endif /* __LOONGARCH_PERF_EVENT_H__ */

Annotation

• Immediate include surface: `asm/ptrace.h`.
• Detected declarations: `function Copyright`.
• 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.