Subversion Repositories shark

Rev

Rev 422 | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
422 giacomo 1 
/*
2 
 * linux/mm/slab.h
3 
 * Written by Mark Hemment, 1996.
4 
 * (markhe@nextd.demon.co.uk)
5 
 */
6 
 
7 
#if     !defined(_LINUX_SLAB_H)
8 
#define _LINUX_SLAB_H
9 
 
10 
#if     defined(__KERNEL__)
11 
 
12 
typedef struct kmem_cache_s kmem_cache_t;
13 
 
14 
#include        <linux/config.h>        /* kmalloc_sizes.h needs CONFIG_ options */
15 
#include        <linux/gfp.h>
16 
#include        <linux/types.h>
17 
#include        <asm/page.h>            /* kmalloc_sizes.h needs PAGE_SIZE */
18 
#include        <asm/cache.h>           /* kmalloc_sizes.h needs L1_CACHE_BYTES */
19 
 
20 
/* flags for kmem_cache_alloc() */
21 
#define SLAB_NOFS               GFP_NOFS
22 
#define SLAB_NOIO               GFP_NOIO
23 
#define SLAB_ATOMIC             GFP_ATOMIC
24 
#define SLAB_USER               GFP_USER
25 
#define SLAB_KERNEL             GFP_KERNEL
26 
#define SLAB_DMA                GFP_DMA
27 
 
28 
#define SLAB_LEVEL_MASK         (__GFP_WAIT|__GFP_HIGH|__GFP_IO|__GFP_FS|\
29 
                                __GFP_COLD|__GFP_NOWARN|__GFP_REPEAT|\
30 
                                __GFP_NOFAIL|__GFP_NORETRY)
31 
 
32 
#define SLAB_NO_GROW            __GFP_NO_GROW   /* don't grow a cache */
33 
 
34 
/* flags to pass to kmem_cache_create().
35 
 * The first 3 are only valid when the allocator as been build
36 
 * SLAB_DEBUG_SUPPORT.
37 
 */
38 
#define SLAB_DEBUG_FREE         0x00000100UL    /* Peform (expensive) checks on free */
39 
#define SLAB_DEBUG_INITIAL      0x00000200UL    /* Call constructor (as verifier) */
40 
#define SLAB_RED_ZONE           0x00000400UL    /* Red zone objs in a cache */
41 
#define SLAB_POISON             0x00000800UL    /* Poison objects */
42 
#define SLAB_NO_REAP            0x00001000UL    /* never reap from the cache */
43 
#define SLAB_HWCACHE_ALIGN      0x00002000UL    /* align objs on a h/w cache lines */
44 
#define SLAB_CACHE_DMA          0x00004000UL    /* use GFP_DMA memory */
45 
#define SLAB_MUST_HWCACHE_ALIGN 0x00008000UL    /* force alignment */
46 
#define SLAB_STORE_USER         0x00010000UL    /* store the last owner for bug hunting */
47 
#define SLAB_RECLAIM_ACCOUNT    0x00020000UL    /* track pages allocated to indicate
48 
                                                   what is reclaimable later*/
49 
 
50 
/* flags passed to a constructor func */
51 
#define SLAB_CTOR_CONSTRUCTOR   0x001UL         /* if not set, then deconstructor */
52 
#define SLAB_CTOR_ATOMIC        0x002UL         /* tell constructor it can't sleep */
53 
#define SLAB_CTOR_VERIFY        0x004UL         /* tell constructor it's a verify call */
54 
 
55 
/* prototypes */
56 
extern void kmem_cache_init(void);
57 
 
58 
extern kmem_cache_t *kmem_find_general_cachep(size_t, int gfpflags);
59 
extern kmem_cache_t *kmem_cache_create(const char *, size_t, size_t, unsigned long,
60 
                                       void (*)(void *, kmem_cache_t *, unsigned long),
61 
                                       void (*)(void *, kmem_cache_t *, unsigned long));
62 
extern int kmem_cache_destroy(kmem_cache_t *);
63 
extern int kmem_cache_shrink(kmem_cache_t *);
64 
extern void *kmem_cache_alloc(kmem_cache_t *, int);
65 
extern void kmem_cache_free(kmem_cache_t *, void *);
66 
extern unsigned int kmem_cache_size(kmem_cache_t *);
67 
 
68 
/* Size description struct for general caches. */
69 
struct cache_sizes {
70 
        size_t           cs_size;
71 
        kmem_cache_t    *cs_cachep;
72 
        kmem_cache_t    *cs_dmacachep;
73 
};
74 
extern struct cache_sizes malloc_sizes[];
75 
extern void *__kmalloc(size_t, int);
76 
 
77 
static inline void *kmalloc(size_t size, int flags)
78 
{
79 
        return __kmalloc(size, flags);
80 
}
81 
 
82 
extern void kfree(const void *);
83 
extern unsigned int ksize(const void *);
84 
 
85 
extern int FASTCALL(kmem_cache_reap(int));
86 
 
87 
/* System wide caches */
88 
extern kmem_cache_t     *vm_area_cachep;
89 
extern kmem_cache_t     *mm_cachep;
90 
extern kmem_cache_t     *names_cachep;
91 
extern kmem_cache_t     *files_cachep;
92 
extern kmem_cache_t     *filp_cachep;
93 
extern kmem_cache_t     *dquot_cachep;
94 
extern kmem_cache_t     *fs_cachep;
95 
extern kmem_cache_t     *signal_cachep;
96 
extern kmem_cache_t     *sighand_cachep;
97 
extern kmem_cache_t     *bio_cachep;
98 
 
99 
void ptrinfo(unsigned long addr);
100 
 
101 
extern atomic_t slab_reclaim_pages;
102 
 
103 
#endif  /* __KERNEL__ */
104 
 
105 
#endif  /* _LINUX_SLAB_H */