include/linux/once_lite.h

File Facts

System

Linux kernel

Corpus path

include/linux/once_lite.h

Extension

.h

Size

934 bytes

Lines

37

Domain

Core OS

Bucket

Core Kernel Interface

Inferred role

Core OS: implementation source

Status

source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

• linux/types.h

Detected Declarations

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

Annotated Snippet

if (unlikely(__ret_cond) && unlikely(!__already_done)) {\
			__already_done = true;				\
			__ret_once = true;				\
		}							\
		unlikely(__ret_once);					\
	})

#define DO_ONCE_LITE_IF(condition, func, ...)				\
	({								\
		bool __ret_do_once = !!(condition);			\
									\
		if (__ONCE_LITE_IF(__ret_do_once))			\
			func(__VA_ARGS__);				\
									\
		unlikely(__ret_do_once);				\
	})

#endif /* _LINUX_ONCE_LITE_H */

Annotation

• Immediate include surface: `linux/types.h`.
• Atlas domain: Core OS / Core Kernel Interface.
• 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.