arch/powerpc/include/asm/mmiowb.h

File Facts

System

Linux kernel

Corpus path

arch/powerpc/include/asm/mmiowb.h

Extension

.h

Size

374 bytes

Lines

19

Domain

Architecture Layer

Bucket

arch/powerpc

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

• linux/compiler.h
• asm/barrier.h
• asm/paca.h
• asm-generic/mmiowb.h

Detected Declarations

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

Annotated Snippet

#ifndef _ASM_POWERPC_MMIOWB_H
#define _ASM_POWERPC_MMIOWB_H

#ifdef CONFIG_MMIOWB

#include <linux/compiler.h>
#include <asm/barrier.h>
#include <asm/paca.h>

#define arch_mmiowb_state()	(&local_paca->mmiowb_state)
#define mmiowb()		mb()

#endif /* CONFIG_MMIOWB */

#include <asm-generic/mmiowb.h>

#endif	/* _ASM_POWERPC_MMIOWB_H */

Annotation

• Immediate include surface: `linux/compiler.h`, `asm/barrier.h`, `asm/paca.h`, `asm-generic/mmiowb.h`.
• Atlas domain: Architecture Layer / arch/powerpc.
• 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.