1
2
3
4#ifndef _LINUX_MEMPOOL_H
5#define _LINUX_MEMPOOL_H
6
7#include <linux/wait.h>
8
9struct kmem_cache;
10
11typedef void * (mempool_alloc_t)(gfp_t gfp_mask, void *pool_data);
12typedef void (mempool_free_t)(void *element, void *pool_data);
13
14typedef struct mempool_s {
15 spinlock_t lock;
16 int min_nr;
17 int curr_nr;
18 void **elements;
19
20 void *pool_data;
21 mempool_alloc_t *alloc;
22 mempool_free_t *free;
23 wait_queue_head_t wait;
24} mempool_t;
25
26extern mempool_t *mempool_create(int min_nr, mempool_alloc_t *alloc_fn,
27 mempool_free_t *free_fn, void *pool_data);
28extern mempool_t *mempool_create_node(int min_nr, mempool_alloc_t *alloc_fn,
29 mempool_free_t *free_fn, void *pool_data, int nid);
30
31extern int mempool_resize(mempool_t *pool, int new_min_nr, gfp_t gfp_mask);
32extern void mempool_destroy(mempool_t *pool);
33extern void * mempool_alloc(mempool_t *pool, gfp_t gfp_mask);
34extern void mempool_free(void *element, mempool_t *pool);
35
36
37
38
39
40void *mempool_alloc_slab(gfp_t gfp_mask, void *pool_data);
41void mempool_free_slab(void *element, void *pool_data);
42static inline mempool_t *
43mempool_create_slab_pool(int min_nr, struct kmem_cache *kc)
44{
45 return mempool_create(min_nr, mempool_alloc_slab, mempool_free_slab,
46 (void *) kc);
47}
48
49
50
51
52
53void *mempool_kmalloc(gfp_t gfp_mask, void *pool_data);
54void mempool_kfree(void *element, void *pool_data);
55static inline mempool_t *mempool_create_kmalloc_pool(int min_nr, size_t size)
56{
57 return mempool_create(min_nr, mempool_kmalloc, mempool_kfree,
58 (void *) size);
59}
60
61
62
63
64
65void *mempool_alloc_pages(gfp_t gfp_mask, void *pool_data);
66void mempool_free_pages(void *element, void *pool_data);
67static inline mempool_t *mempool_create_page_pool(int min_nr, int order)
68{
69 return mempool_create(min_nr, mempool_alloc_pages, mempool_free_pages,
70 (void *)(long)order);
71}
72
73#endif
74