arch/x86/include/asm/checksum.h

File Facts

System

Linux kernel

Corpus path

arch/x86/include/asm/checksum.h

Extension

.h

Size

323 bytes

Lines

14

Domain

Architecture Layer

Bucket

arch/x86

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

• asm-generic/checksum.h
• asm/checksum_32.h
• asm/checksum_64.h

Detected Declarations

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

Annotated Snippet

#ifdef CONFIG_GENERIC_CSUM
# include <asm-generic/checksum.h>
#else
# define  _HAVE_ARCH_COPY_AND_CSUM_FROM_USER 1
# define HAVE_CSUM_COPY_USER
# define _HAVE_ARCH_CSUM_AND_COPY
# ifdef CONFIG_X86_32
#  include <asm/checksum_32.h>
# else
#  include <asm/checksum_64.h>
# endif
#endif

Annotation

• Immediate include surface: `asm-generic/checksum.h`, `asm/checksum_32.h`, `asm/checksum_64.h`.
• Atlas domain: Architecture Layer / arch/x86.
• 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.