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7c8199e2 AS |
1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
2 | /* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */ | |
3 | #ifndef _BPF_MEM_ALLOC_H | |
4 | #define _BPF_MEM_ALLOC_H | |
5 | #include <linux/compiler_types.h> | |
9f2c6e96 | 6 | #include <linux/workqueue.h> |
7c8199e2 AS |
7 | |
8 | struct bpf_mem_cache; | |
9 | struct bpf_mem_caches; | |
10 | ||
11 | struct bpf_mem_alloc { | |
12 | struct bpf_mem_caches __percpu *caches; | |
13 | struct bpf_mem_cache __percpu *cache; | |
9f2c6e96 | 14 | struct work_struct work; |
7c8199e2 AS |
15 | }; |
16 | ||
5d5de3a4 HT |
17 | /* 'size != 0' is for bpf_mem_alloc which manages fixed-size objects. |
18 | * Alloc and free are done with bpf_mem_cache_{alloc,free}(). | |
19 | * | |
20 | * 'size = 0' is for bpf_mem_alloc which manages many fixed-size objects. | |
21 | * Alloc and free are done with bpf_mem_{alloc,free}() and the size of | |
22 | * the returned object is given by the size argument of bpf_mem_alloc(). | |
23 | */ | |
4ab67149 | 24 | int bpf_mem_alloc_init(struct bpf_mem_alloc *ma, int size, bool percpu); |
7c8199e2 AS |
25 | void bpf_mem_alloc_destroy(struct bpf_mem_alloc *ma); |
26 | ||
27 | /* kmalloc/kfree equivalent: */ | |
28 | void *bpf_mem_alloc(struct bpf_mem_alloc *ma, size_t size); | |
29 | void bpf_mem_free(struct bpf_mem_alloc *ma, void *ptr); | |
30 | ||
31 | /* kmem_cache_alloc/free equivalent: */ | |
32 | void *bpf_mem_cache_alloc(struct bpf_mem_alloc *ma); | |
33 | void bpf_mem_cache_free(struct bpf_mem_alloc *ma, void *ptr); | |
e65a5c6e MKL |
34 | void bpf_mem_cache_raw_free(void *ptr); |
35 | void *bpf_mem_cache_alloc_flags(struct bpf_mem_alloc *ma, gfp_t flags); | |
7c8199e2 AS |
36 | |
37 | #endif /* _BPF_MEM_ALLOC_H */ |