87 lines
2.9 KiB
C
Executable File
87 lines
2.9 KiB
C
Executable File
/*
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* linux/mm/slab.h
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* Written by Mark Hemment, 1996.
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* (markhe@nextd.demon.co.uk)
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*/
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#if !defined(_LINUX_SLAB_H)
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#define _LINUX_SLAB_H
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#if defined(__KERNEL__)
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typedef struct kmem_cache_s kmem_cache_t;
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#include <linux/mm.h>
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#include <linux/cache.h>
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/* flags for kmem_cache_alloc() */
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#define SLAB_NOFS GFP_NOFS
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#define SLAB_NOIO GFP_NOIO
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#define SLAB_NOHIGHIO GFP_NOHIGHIO
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#define SLAB_ATOMIC GFP_ATOMIC
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#define SLAB_USER GFP_USER
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#define SLAB_KERNEL GFP_KERNEL
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#define SLAB_NFS GFP_NFS
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#define SLAB_DMA GFP_DMA
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#define SLAB_LEVEL_MASK (__GFP_WAIT|__GFP_HIGH|__GFP_IO|__GFP_HIGHIO|__GFP_FS)
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#define SLAB_NO_GROW 0x00001000UL /* don't grow a cache */
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/* flags to pass to kmem_cache_create().
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* The first 3 are only valid when the allocator as been build
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* SLAB_DEBUG_SUPPORT.
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*/
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#define SLAB_DEBUG_FREE 0x00000100UL /* Peform (expensive) checks on free */
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#define SLAB_DEBUG_INITIAL 0x00000200UL /* Call constructor (as verifier) */
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#define SLAB_RED_ZONE 0x00000400UL /* Red zone objs in a cache */
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#define SLAB_POISON 0x00000800UL /* Poison objects */
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#define SLAB_NO_REAP 0x00001000UL /* never reap from the cache */
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#define SLAB_HWCACHE_ALIGN 0x00002000UL /* align objs on a h/w cache lines */
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#define SLAB_CACHE_DMA 0x00004000UL /* use GFP_DMA memory */
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#define SLAB_MUST_HWCACHE_ALIGN 0x00008000UL /* force alignment */
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/* flags passed to a constructor func */
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#define SLAB_CTOR_CONSTRUCTOR 0x001UL /* if not set, then deconstructor */
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#define SLAB_CTOR_ATOMIC 0x002UL /* tell constructor it can't sleep */
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#define SLAB_CTOR_VERIFY 0x004UL /* tell constructor it's a verify call */
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/* prototypes */
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extern void kmem_cache_init(void);
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extern void kmem_cache_sizes_init(void);
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extern kmem_cache_t *kmem_find_general_cachep(size_t, int gfpflags);
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extern kmem_cache_t *kmem_cache_create(const char *, size_t, size_t, unsigned long,
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void (*)(void *, kmem_cache_t *, unsigned long),
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void (*)(void *, kmem_cache_t *, unsigned long));
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extern int kmem_cache_destroy(kmem_cache_t *);
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extern int kmem_cache_shrink(kmem_cache_t *);
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extern void *kmem_cache_alloc(kmem_cache_t *, int);
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extern void kmem_cache_free(kmem_cache_t *, void *);
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extern void *kmalloc(size_t, int);
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extern void kfree(const void *);
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#ifdef NO_MM
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extern size_t ksize(const void *);
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#endif
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extern int FASTCALL(kmem_cache_reap(int));
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extern int slabinfo_read_proc(char *page, char **start, off_t off,
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int count, int *eof, void *data);
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extern int slabinfo_write_proc(struct file *file, const char *buffer,
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unsigned long count, void *data);
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/* System wide caches */
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extern kmem_cache_t *vm_area_cachep;
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extern kmem_cache_t *mm_cachep;
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extern kmem_cache_t *names_cachep;
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extern kmem_cache_t *files_cachep;
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extern kmem_cache_t *filp_cachep;
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extern kmem_cache_t *dquot_cachep;
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extern kmem_cache_t *bh_cachep;
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extern kmem_cache_t *fs_cachep;
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extern kmem_cache_t *sigact_cachep;
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#endif /* __KERNEL__ */
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#endif /* _LINUX_SLAB_H */
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