| 1,5 → 1,5 |
|---|
| /* |
| * Copyright (C) 2005 Ondrej Palkovsky |
| * Copyright (C) 2006 Ondrej Palkovsky |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| 38,11 → 38,8 |
|---|
| /** If object size is less, store control structure inside SLAB */ |
| #define SLAB_INSIDE_SIZE (PAGE_SIZE / 6) |
| |
| /* slab_alloc constants */ |
| #define SLAB_ATOMIC 0x1 /**< Do not sleep when no free memory, |
| may return NULL */ |
| #define SLAB_NO_RECLAIM 0x2 /**< Do not try to call slab_reclaim, if no |
| free memory is found - avoid deadlock */ |
| /** Maximum wasted space we allow for cache */ |
| #define SLAB_MAX_BADNESS(cache) ((PAGE_SIZE << (cache)->order) / 4) |
| |
| /* slab_reclaim constants */ |
| #define SLAB_RECLAIM_ALL 0x1 /**< Reclaim all possible memory, because |
| 54,9 → 51,9 |
|---|
| |
| typedef struct { |
| link_t link; |
| count_t busy; |
| count_t size; |
| void *objs[0]; |
| count_t busy; /**< Count of full slots in magazine */ |
| count_t size; /**< Number of slots in magazine */ |
| void *objs[0]; /**< Slots in magazine */ |
| }slab_magazine_t; |
| |
| typedef struct { |
| 65,24 → 62,24 |
|---|
| SPINLOCK_DECLARE(lock); |
| link_t link; |
| /* Configuration */ |
| size_t size; |
| size_t align; |
| size_t size; /**< Size of SLAB position - align_up(sizeof(obj)) */ |
| int (*constructor)(void *obj, int kmflag); |
| void (*destructor)(void *obj); |
| int flags; |
| int flags; /**< Flags changing behaviour of cache */ |
| |
| /* Computed values */ |
| int pages; |
| int objects; |
| __u8 order; /**< Order of frames to be allocated */ |
| int objects; /**< Number of objects that fit in */ |
| |
| /* Statistics */ |
| |
| /* Slabs */ |
| link_t full_slabs; |
| link_t partial_slabs; |
| link_t full_slabs; /**< List of full slabs */ |
| link_t partial_slabs; /**< List of partial slabs */ |
| /* Magazines */ |
| link_t magazines; |
| /* CPU cache */ |
| link_t magazines; /**< List o full magazines */ |
| |
| /** CPU cache */ |
| struct { |
| slab_magazine_t *current; |
| slab_magazine_t *last; |
| 90,30 → 87,22 |
|---|
| }mag_cache[0]; |
| }slab_cache_t; |
| |
| typedef struct { |
| slab_cache_t *cache; /**< Pointer to parent cache */ |
| void *start; /**< Start address of first available item */ |
| count_t available; /**< Count of available items in this slab */ |
| index_t nextavail; /**< The index of next available item */ |
| }slab_slab_t; |
| extern slab_cache_t * slab_cache_create(char *name, |
| size_t size, |
| size_t align, |
| int (*constructor)(void *obj, int kmflag), |
| void (*destructor)(void *obj), |
| int flags); |
| extern void slab_cache_destroy(slab_cache_t *cache); |
| |
| extern void * slab_alloc(slab_cache_t *cache, int flags); |
| extern void slab_free(slab_cache_t *cache, void *obj); |
| extern count_t slab_reclaim(int flags); |
| |
| slab_cache_t * slab_cache_create(char *name, |
| size_t size, |
| size_t align, |
| int (*constructor)(void *obj, int kmflag), |
| void (*destructor)(void *obj), |
| int flags); |
| void slab_cache_destroy(slab_cache_t *cache); |
| |
| void * slab_alloc(slab_cache_t *cache, int flags); |
| void slab_free(slab_cache_t *cache, void *obj); |
| count_t slab_reclaim(int flags); |
| |
| /** Initialize SLAB subsytem */ |
| void slab_cache_init(void); |
| extern void slab_cache_init(void); |
| |
| /* KConsole debug */ |
| void slab_print_list(void); |
| extern void slab_print_list(void); |
| |
| #endif |