36 lines
1.2 KiB
C
36 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/* Copyright (c) 2022 Meta Platforms, Inc. and affiliates. */
|
|
#ifndef _BPF_MEM_ALLOC_H
|
|
#define _BPF_MEM_ALLOC_H
|
|
#include <linux/compiler_types.h>
|
|
#include <linux/workqueue.h>
|
|
|
|
struct bpf_mem_cache;
|
|
struct bpf_mem_caches;
|
|
|
|
struct bpf_mem_alloc {
|
|
struct bpf_mem_caches __percpu *caches;
|
|
struct bpf_mem_cache __percpu *cache;
|
|
struct work_struct work;
|
|
};
|
|
|
|
/* 'size != 0' is for bpf_mem_alloc which manages fixed-size objects.
|
|
* Alloc and free are done with bpf_mem_cache_{alloc,free}().
|
|
*
|
|
* 'size = 0' is for bpf_mem_alloc which manages many fixed-size objects.
|
|
* Alloc and free are done with bpf_mem_{alloc,free}() and the size of
|
|
* the returned object is given by the size argument of bpf_mem_alloc().
|
|
*/
|
|
int bpf_mem_alloc_init(struct bpf_mem_alloc *ma, int size, bool percpu);
|
|
void bpf_mem_alloc_destroy(struct bpf_mem_alloc *ma);
|
|
|
|
/* kmalloc/kfree equivalent: */
|
|
void *bpf_mem_alloc(struct bpf_mem_alloc *ma, size_t size);
|
|
void bpf_mem_free(struct bpf_mem_alloc *ma, void *ptr);
|
|
|
|
/* kmem_cache_alloc/free equivalent: */
|
|
void *bpf_mem_cache_alloc(struct bpf_mem_alloc *ma);
|
|
void bpf_mem_cache_free(struct bpf_mem_alloc *ma, void *ptr);
|
|
|
|
#endif /* _BPF_MEM_ALLOC_H */
|