include/linux/array_size.h

File Facts

System

Linux kernel

Corpus path

include/linux/array_size.h

Extension

.h

Size

478 bytes

Lines

20

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/compiler.h

Detected Declarations

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

Annotated Snippet

#ifndef _LINUX_ARRAY_SIZE_H
#define _LINUX_ARRAY_SIZE_H

#include <linux/compiler.h>

/**
 * ARRAY_SIZE - get the number of elements in array @arr
 * @arr: array to be sized
 */
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + __must_be_array(arr))

/**
 * ARRAY_END - get a pointer to one past the last element in array @arr
 * @arr: array
 */
#define ARRAY_END(arr)  (&(arr)[ARRAY_SIZE(arr)])

#endif  /* _LINUX_ARRAY_SIZE_H */

Annotation

• Immediate include surface: `linux/compiler.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.