lib/crc/arm/crc64.h

File Facts

System

Linux kernel

Corpus path

lib/crc/arm/crc64.h

Extension

.h

Size

809 bytes

Lines

37

Domain

Kernel Services

Bucket

lib

Inferred role

Kernel Services: implementation source

Status

source implementation candidate

Why This File Exists

Shared kernel service surface used by multiple subsystems, including helpers, cryptography, virtualization support, and async I/O infrastructure.

• Shared kernel service surface used by multiple subsystems, including helpers, cryptography, virtualization support, and async I/O infrastructure.

Dependency Surface

• asm/simd.h

Detected Declarations

• function crc64_nvme_arch
• function crc64_mod_init_arch

Annotated Snippet

likely(may_use_simd())) {
		do {
			size_t chunk = min_t(size_t, len & ~15, SZ_4K);

			scoped_ksimd()
				crc = crc64_nvme_neon(crc, p, chunk);

			p += chunk;
			len -= chunk;
		} while (len >= 128);
	}
	return crc64_nvme_generic(crc, p, len);
}

#define crc64_mod_init_arch crc64_mod_init_arch
static void crc64_mod_init_arch(void)
{
	if (elf_hwcap2 & HWCAP2_PMULL)
		static_branch_enable(&have_pmull);
}

Annotation

• Immediate include surface: `asm/simd.h`.
• Detected declarations: `function crc64_nvme_arch`, `function crc64_mod_init_arch`.
• Atlas domain: Kernel Services / lib.
• 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.