arch/um/include/asm/current.h

File Facts

System

Linux kernel

Corpus path

arch/um/include/asm/current.h

Extension

.h

Size

449 bytes

Lines

25

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

Dependency Surface

• linux/compiler.h
• linux/threads.h
• shared/smp.h

Detected Declarations

• struct task_struct

Annotated Snippet

#ifndef __ASM_CURRENT_H
#define __ASM_CURRENT_H

#include <linux/compiler.h>
#include <linux/threads.h>

#ifndef __ASSEMBLER__

#include <shared/smp.h>

struct task_struct;
extern struct task_struct *cpu_tasks[NR_CPUS];

static __always_inline struct task_struct *get_current(void)
{
	return cpu_tasks[uml_curr_cpu()];
}

#define current get_current()

#endif /* __ASSEMBLER__ */

#endif /* __ASM_CURRENT_H */

Annotation

• Immediate include surface: `linux/compiler.h`, `linux/threads.h`, `shared/smp.h`.
• Detected declarations: `struct task_struct`.
• 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.