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/*
* memory buffer pool support
*/
#ifndef _LINUX_MEMPOOL_H
#define _LINUX_MEMPOOL_H
#include <linux/compiler.h>
#include <linux/bug.h>
#include <linux/slab.h>
struct kmem_cache;
typedef void * (mempool_alloc_t)(gfp_t gfp_mask, void *pool_data);
typedef void (mempool_free_t)(void *element, void *pool_data);
typedef struct mempool_s {
size_t elem_size;
void *pool_data;
mempool_alloc_t *alloc;
mempool_free_t *free;
} mempool_t;
static inline bool mempool_initialized(mempool_t *pool)
{
return true;
}
extern int mempool_resize(mempool_t *pool, int new_min_nr);
static inline void mempool_free(void *element, mempool_t *pool)
{
free(element);
}
static inline void *mempool_alloc(mempool_t *pool, gfp_t gfp_mask) __malloc
{
BUG_ON(!pool->elem_size);
return kmalloc(pool->elem_size, gfp_mask);
}
static inline void mempool_exit(mempool_t *pool) {}
static inline void mempool_destroy(mempool_t *pool)
{
free(pool);
}
static inline int
mempool_init_slab_pool(mempool_t *pool, int min_nr, struct kmem_cache *kc)
{
pool->elem_size = 0;
return 0;
}
static inline mempool_t *
mempool_create_slab_pool(int min_nr, struct kmem_cache *kc)
{
mempool_t *pool = malloc(sizeof(*pool));
pool->elem_size = 0;
return pool;
}
static inline int mempool_init_kmalloc_pool(mempool_t *pool, int min_nr, size_t size)
{
pool->elem_size = size;
return 0;
}
static inline int mempool_init_page_pool(mempool_t *pool, int min_nr, int order)
{
pool->elem_size = PAGE_SIZE << order;
return 0;
}
static inline int mempool_init(mempool_t *pool, int min_nr,
mempool_alloc_t *alloc_fn,
mempool_free_t *free_fn,
void *pool_data)
{
pool->elem_size = (size_t) pool_data;
pool->pool_data = pool_data;
pool->alloc = alloc_fn;
pool->free = free_fn;
return 0;
}
#endif /* _LINUX_MEMPOOL_H */
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