samples/bpf/asm_goto_workaround.h

File Facts

System

Linux kernel

Corpus path

samples/bpf/asm_goto_workaround.h

Extension

.h

Size

715 bytes

Lines

29

Domain

Support Tooling And Documentation

Bucket

samples

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/types.h

Detected Declarations

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

Annotated Snippet

#ifndef __ASM_GOTO_WORKAROUND_H
#define __ASM_GOTO_WORKAROUND_H

/*
 * This will bring in asm_goto_output and asm_inline macro definitions
 * if enabled by compiler and config options.
 */
#include <linux/types.h>

#ifdef asm_goto_output
#undef asm_goto_output
#define asm_goto_output(x...) asm volatile("invalid use of asm_goto_output")
#endif

/*
 * asm_inline is defined as asm __inline in "include/linux/compiler_types.h"
 * if supported by the kernel's CC (i.e CONFIG_CC_HAS_ASM_INLINE) which is not
 * supported by CLANG.
 */
#ifdef asm_inline
#undef asm_inline
#define asm_inline asm
#endif

#define volatile(x...) volatile("")
#endif

Annotation

• Immediate include surface: `linux/types.h`.
• Atlas domain: Support Tooling And Documentation / samples.
• 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.