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