arch/um/include/shared/um_malloc.h

File Facts

System

Linux kernel

Corpus path

arch/um/include/shared/um_malloc.h

Extension

.h

Size

460 bytes

Lines

21

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.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.

Dependency Surface

• generated/asm-offsets.h

Detected Declarations

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

Annotated Snippet

#ifndef __UM_MALLOC_H__
#define __UM_MALLOC_H__

#include <generated/asm-offsets.h>

extern void *uml_kmalloc(int size, int flags);
extern void kfree(const void *ptr);

extern void *vmalloc_noprof(unsigned long size);
#define vmalloc(...)		vmalloc_noprof(__VA_ARGS__)
extern void vfree(const void *ptr);

#endif /* __UM_MALLOC_H__ */

Annotation

• Immediate include surface: `generated/asm-offsets.h`.
• 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.