tools/testing/selftests/bpf/libarena/include/libarena/common.h

File Facts

System

Linux kernel

Corpus path

tools/testing/selftests/bpf/libarena/include/libarena/common.h

Extension

.h

Size

2595 bytes

Lines

94

Domain

Support Tooling And Documentation

Bucket

tools

Inferred role

Support Tooling And Documentation: implementation source

Status

source implementation candidate

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• vmlinux.h
• bpf_arena_common.h
• bpf_arena_spin_lock.h
• asm-generic/errno.h
• stdint.h

Detected Declarations

• struct arena_get_info_args
• struct arena_alloc_reserve_args

Annotated Snippet

struct arena_get_info_args {
	void __arena *arena_base;
};

struct arena_alloc_reserve_args {
	u64 nr_pages;
};

/* Reasonable default number of pages reserved by arena_alloc_reserve. */
#define ARENA_RESERVE_PAGES_DFL (8)

Annotation

• Immediate include surface: `vmlinux.h`, `bpf_arena_common.h`, `bpf_arena_spin_lock.h`, `asm-generic/errno.h`, `stdint.h`.
• Detected declarations: `struct arena_get_info_args`, `struct arena_alloc_reserve_args`.
• Atlas domain: Support Tooling And Documentation / tools.
• Implementation status: source implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.