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Rev 3022 Rev 4055
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/** If object size is less, store control structure inside SLAB */
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/** If object size is less, store control structure inside SLAB */
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#define SLAB_INSIDE_SIZE   (PAGE_SIZE >> 3)
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#define SLAB_INSIDE_SIZE   (PAGE_SIZE >> 3)
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/** Maximum wasted space we allow for cache */
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/** Maximum wasted space we allow for cache */
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#define SLAB_MAX_BADNESS(cache) \
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#define SLAB_MAX_BADNESS(cache)   (((unsigned int) PAGE_SIZE << (cache)->order) >> 2)
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    (((unsigned int) PAGE_SIZE << (cache)->order) >> 2)
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/* slab_reclaim constants */
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/* slab_reclaim constants */
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/** Reclaim all possible memory, because we are in memory stress */
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/** Reclaim all possible memory, because we are in memory stress */
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#define SLAB_RECLAIM_ALL  0x1
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#define SLAB_RECLAIM_ALL  0x01
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/* cache_create flags */
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/* cache_create flags */
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/** Do not use per-cpu cache */
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/** Do not use per-cpu cache */
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#define SLAB_CACHE_NOMAGAZINE 0x1
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#define SLAB_CACHE_NOMAGAZINE 0x1
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    /** Flags changing behaviour of cache */
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    /** Flags changing behaviour of cache */
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    int flags;
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    int flags;
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    /* Computed values */
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    /* Computed values */
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    uint8_t order;              /**< Order of frames to be allocated */
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    uint8_t order;          /**< Order of frames to be allocated */
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    unsigned int objects;       /**< Number of objects that fit in */
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    unsigned int objects;       /**< Number of objects that fit in */
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    /* Statistics */
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    /* Statistics */
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    atomic_t allocated_slabs;
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    atomic_t allocated_slabs;
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    atomic_t allocated_objs;
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    atomic_t allocated_objs;
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    /** CPU cache */
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    /** CPU cache */
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    slab_mag_cache_t *mag_cache;
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    slab_mag_cache_t *mag_cache;
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} slab_cache_t;
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} slab_cache_t;
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extern slab_cache_t * slab_cache_create(char *name, size_t size, size_t align,
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extern slab_cache_t *slab_cache_create(char *, size_t, size_t,
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    int (*constructor)(void *obj, int kmflag), int (*destructor)(void *obj),
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    int (*)(void *, int), int (*)(void *), int);
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    int flags);
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extern void slab_cache_destroy(slab_cache_t *cache);
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extern void slab_cache_destroy(slab_cache_t *);
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extern void * slab_alloc(slab_cache_t *cache, int flags);
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extern void * slab_alloc(slab_cache_t *, int);
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extern void slab_free(slab_cache_t *cache, void *obj);
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extern void slab_free(slab_cache_t *, void *);
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extern count_t slab_reclaim(int flags);
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extern count_t slab_reclaim(int);
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/* slab subsytem initialization */
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/* slab subsytem initialization */
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extern void slab_cache_init(void);
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extern void slab_cache_init(void);
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extern void slab_enable_cpucache(void);
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extern void slab_enable_cpucache(void);
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/* kconsole debug */
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/* kconsole debug */
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extern void slab_print_list(void);
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extern void slab_print_list(void);
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/* malloc support */
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/* malloc support */
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extern void * malloc(unsigned int size, int flags);
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extern void *malloc(unsigned int, int);
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extern void * realloc(void *ptr, unsigned int size, int flags);
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extern void *realloc(void *, unsigned int, int);
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extern void free(void *ptr);
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extern void free(void *);
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#endif
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#endif
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/** @}
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/** @}
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 */
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 */