scripts/atomic/fallbacks/dec_if_positive

File Facts

System

Linux kernel

Corpus path

scripts/atomic/fallbacks/dec_if_positive

Extension

[no extension]

Size

176 bytes

Lines

12

Domain

Support Tooling And Documentation

Bucket

scripts

Inferred role

Support Tooling And Documentation: scripts

Status

atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

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

Annotated Snippet

cat <<EOF
	${int} dec, c = raw_${atomic}_read(v);

	do {
		dec = c - 1;
		if (unlikely(dec < 0))
			break;
	} while (!raw_${atomic}_try_cmpxchg(v, &c, dec));

	return dec;
EOF

Annotation

• Atlas domain: Support Tooling And Documentation / scripts.
• Implementation status: atlas-only.

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.