arch/um/include/shared/kern.h

File Facts

System

Linux kernel

Corpus path

arch/um/include/shared/kern.h

Extension

.h

Size

582 bytes

Lines

23

Domain

Architecture Layer

Bucket

arch/um

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

• No C-style include directives detected by the generator.

Detected Declarations

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

Annotated Snippet

#ifndef __KERN_H__
#define __KERN_H__

/* These are all user-mode things which are convenient to call directly
 * from kernel code and for which writing a wrapper is too much of a pain.
 * The regular include files can't be included because this file is included
 * only into kernel code, and user-space includes conflict with kernel
 * includes.
 */

extern int printf(const char *fmt, ...);
extern void *sbrk(int increment);
extern int pause(void);
extern void exit(int);

#endif

Annotation

• Atlas domain: Architecture Layer / arch/um.
• 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.