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 */
20 char __attribute__((weak)) arena[1];
21
22 #ifndef offsetof
23 #define offsetof(type, member) ((unsigned long)&((type *)0)->member)
24 #endif
25
bpf_arena_alloc_pages(void * map,void * addr,__u32 page_cnt,int node_id,__u64 flags)26 static 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 }
bpf_arena_free_pages(void * map,void __arena * ptr,__u32 page_cnt)31 static inline void bpf_arena_free_pages(void *map, void __arena *ptr, __u32 page_cnt)
32 {
33 }
34