arch/sparc/include/asm/percpu_64.h

File Facts

System

Linux kernel

Corpus path

arch/sparc/include/asm/percpu_64.h

Extension

.h

Size

541 bytes

Lines

28

Domain

Architecture Layer

Bucket

arch/sparc

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/trap_block.h
• asm-generic/percpu.h

Detected Declarations

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

Annotated Snippet

#ifndef __ARCH_SPARC64_PERCPU__
#define __ARCH_SPARC64_PERCPU__

#include <linux/compiler.h>

#ifndef BUILD_VDSO
register unsigned long __local_per_cpu_offset asm("g5");
#endif

#ifdef CONFIG_SMP

#include <asm/trap_block.h>

#define __per_cpu_offset(__cpu) \
	(trap_block[(__cpu)].__per_cpu_base)
#define per_cpu_offset(x) (__per_cpu_offset(x))

#define __my_cpu_offset __local_per_cpu_offset

#else /* ! SMP */

#endif	/* SMP */

#include <asm-generic/percpu.h>

#endif /* __ARCH_SPARC64_PERCPU__ */

Annotation

• Immediate include surface: `linux/compiler.h`, `asm/trap_block.h`, `asm-generic/percpu.h`.
• Atlas domain: Architecture Layer / arch/sparc.
• 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.