forked from luck/tmp_suning_uos_patched
b7454ad3cf
This patch moves all the common machinery to slabinfo processing to slab_common.c. We can do better by noticing that the output is heavily common, and having the allocators to just provide finished information about this. But after this first step, this can be done easier. Signed-off-by: Glauber Costa <glommer@parallels.com> Acked-by: Christoph Lameter <cl@linux.com> CC: David Rientjes <rientjes@google.com> Signed-off-by: Pekka Enberg <penberg@kernel.org>
59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
#ifndef MM_SLAB_H
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#define MM_SLAB_H
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/*
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* Internal slab definitions
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*/
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/*
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* State of the slab allocator.
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*
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* This is used to describe the states of the allocator during bootup.
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* Allocators use this to gradually bootstrap themselves. Most allocators
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* have the problem that the structures used for managing slab caches are
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* allocated from slab caches themselves.
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*/
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enum slab_state {
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DOWN, /* No slab functionality yet */
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PARTIAL, /* SLUB: kmem_cache_node available */
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PARTIAL_ARRAYCACHE, /* SLAB: kmalloc size for arraycache available */
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PARTIAL_L3, /* SLAB: kmalloc size for l3 struct available */
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UP, /* Slab caches usable but not all extras yet */
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FULL /* Everything is working */
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};
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extern enum slab_state slab_state;
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/* The slab cache mutex protects the management structures during changes */
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extern struct mutex slab_mutex;
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/* The list of all slab caches on the system */
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extern struct list_head slab_caches;
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/* The slab cache that manages slab cache information */
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extern struct kmem_cache *kmem_cache;
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/* Functions provided by the slab allocators */
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extern int __kmem_cache_create(struct kmem_cache *, unsigned long flags);
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#ifdef CONFIG_SLUB
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struct kmem_cache *__kmem_cache_alias(const char *name, size_t size,
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size_t align, unsigned long flags, void (*ctor)(void *));
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#else
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static inline struct kmem_cache *__kmem_cache_alias(const char *name, size_t size,
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size_t align, unsigned long flags, void (*ctor)(void *))
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{ return NULL; }
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#endif
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int __kmem_cache_shutdown(struct kmem_cache *);
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struct seq_file;
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struct file;
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void print_slabinfo_header(struct seq_file *m);
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int slabinfo_show(struct seq_file *m, void *p);
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ssize_t slabinfo_write(struct file *file, const char __user *buffer,
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size_t count, loff_t *ppos);
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#endif
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