tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
2/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */
3#pragma once
4
5#ifndef arena_container_of
6#define arena_container_of(ptr, type, member) \
7 ({ \
8 void __arena *__mptr = (void __arena *)(ptr); \
9 ((type *)(__mptr - offsetof(type, member))); \
10 })
11#endif
12
13/* Provide the definition of PAGE_SIZE. */
14#include <sys/user.h>
15
16#define __arena
17#define __arg_arena
18#define cast_kern(ptr) /* nop for user space */
19#define cast_user(ptr) /* nop for user space */
20char __attribute__((weak)) arena[1];
21
22#ifndef offsetof
23#define offsetof(type, member) ((unsigned long)&((type *)0)->member)
24#endif
25
26static inline void __arena* bpf_arena_alloc_pages(void *map, void *addr, __u32 page_cnt,
27 int node_id, __u64 flags)
28{
29 return NULL;
30}
31static inline void bpf_arena_free_pages(void *map, void __arena *ptr, __u32 page_cnt)
32{
33}