arch/xtensa/kernel/xtensa_ksyms.c

File Facts

System

Linux kernel

Corpus path

arch/xtensa/kernel/xtensa_ksyms.c

Extension

.c

Size

660 bytes

Lines

29

Domain

Architecture Layer

Bucket

arch/xtensa

Inferred role

Architecture Layer: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.

Dependency Surface

• linux/module.h
• asm/pgtable.h

Detected Declarations

• function Copyright
• function __sync_fetch_and_or_4
• export __sync_fetch_and_and_4
• export __sync_fetch_and_or_4

Annotated Snippet

#include <linux/module.h>
#include <asm/pgtable.h>

unsigned int __sync_fetch_and_and_4(volatile void *p, unsigned int v)
{
	BUG();
}
EXPORT_SYMBOL(__sync_fetch_and_and_4);

unsigned int __sync_fetch_and_or_4(volatile void *p, unsigned int v)
{
	BUG();
}
EXPORT_SYMBOL(__sync_fetch_and_or_4);

Annotation

• Immediate include surface: `linux/module.h`, `asm/pgtable.h`.
• Detected declarations: `function Copyright`, `function __sync_fetch_and_or_4`, `export __sync_fetch_and_and_4`, `export __sync_fetch_and_or_4`.
• Atlas domain: Architecture Layer / arch/xtensa.
• Implementation status: integration 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.