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Christoph Lameter97d06602012-07-06 15:25:11 -05001#ifndef MM_SLAB_H
2#define MM_SLAB_H
3/*
4 * Internal slab definitions
5 */
6
Joonsoo Kim07f361b2014-10-09 15:26:00 -07007#ifdef CONFIG_SLOB
8/*
9 * Common fields provided in kmem_cache by all slab allocators
10 * This struct is either used directly by the allocator (SLOB)
11 * or the allocator must include definitions for all fields
12 * provided in kmem_cache_common in their definition of kmem_cache.
13 *
14 * Once we can do anonymous structs (C11 standard) we could put a
15 * anonymous struct definition in these allocators so that the
16 * separate allocations in the kmem_cache structure of SLAB and
17 * SLUB is no longer needed.
18 */
19struct kmem_cache {
20 unsigned int object_size;/* The original size of the object */
21 unsigned int size; /* The aligned/padded/added on size */
22 unsigned int align; /* Alignment as calculated */
23 unsigned long flags; /* Active flags on the slab */
24 const char *name; /* Slab name for sysfs */
25 int refcount; /* Use counter */
26 void (*ctor)(void *); /* Called on object slot creation */
27 struct list_head list; /* List of all slab caches on the system */
28};
29
30#endif /* CONFIG_SLOB */
31
32#ifdef CONFIG_SLAB
33#include <linux/slab_def.h>
34#endif
35
36#ifdef CONFIG_SLUB
37#include <linux/slub_def.h>
38#endif
39
40#include <linux/memcontrol.h>
Jesper Dangaard Brouer11c7aec2016-03-15 14:53:35 -070041#include <linux/fault-inject.h>
42#include <linux/kmemcheck.h>
43#include <linux/kasan.h>
44#include <linux/kmemleak.h>
Joonsoo Kim07f361b2014-10-09 15:26:00 -070045
Christoph Lameter97d06602012-07-06 15:25:11 -050046/*
47 * State of the slab allocator.
48 *
49 * This is used to describe the states of the allocator during bootup.
50 * Allocators use this to gradually bootstrap themselves. Most allocators
51 * have the problem that the structures used for managing slab caches are
52 * allocated from slab caches themselves.
53 */
54enum slab_state {
55 DOWN, /* No slab functionality yet */
56 PARTIAL, /* SLUB: kmem_cache_node available */
Christoph Lameterce8eb6c2013-01-10 19:14:19 +000057 PARTIAL_NODE, /* SLAB: kmalloc size for node struct available */
Christoph Lameter97d06602012-07-06 15:25:11 -050058 UP, /* Slab caches usable but not all extras yet */
59 FULL /* Everything is working */
60};
61
62extern enum slab_state slab_state;
63
Christoph Lameter18004c52012-07-06 15:25:12 -050064/* The slab cache mutex protects the management structures during changes */
65extern struct mutex slab_mutex;
Christoph Lameter9b030cb2012-09-05 00:20:33 +000066
67/* The list of all slab caches on the system */
Christoph Lameter18004c52012-07-06 15:25:12 -050068extern struct list_head slab_caches;
69
Christoph Lameter9b030cb2012-09-05 00:20:33 +000070/* The slab cache that manages slab cache information */
71extern struct kmem_cache *kmem_cache;
72
Christoph Lameter45906852012-11-28 16:23:16 +000073unsigned long calculate_alignment(unsigned long flags,
74 unsigned long align, unsigned long size);
75
Christoph Lameterf97d5f62013-01-10 19:12:17 +000076#ifndef CONFIG_SLOB
77/* Kmalloc array related functions */
Daniel Sanders34cc6992015-06-24 16:55:57 -070078void setup_kmalloc_cache_index_table(void);
Christoph Lameterf97d5f62013-01-10 19:12:17 +000079void create_kmalloc_caches(unsigned long);
Christoph Lameter2c59dd62013-01-10 19:14:19 +000080
81/* Find the kmalloc slab corresponding for a certain size */
82struct kmem_cache *kmalloc_slab(size_t, gfp_t);
Christoph Lameterf97d5f62013-01-10 19:12:17 +000083#endif
84
85
Christoph Lameter9b030cb2012-09-05 00:20:33 +000086/* Functions provided by the slab allocators */
Christoph Lameter8a13a4c2012-09-04 23:18:33 +000087extern int __kmem_cache_create(struct kmem_cache *, unsigned long flags);
Christoph Lameter97d06602012-07-06 15:25:11 -050088
Christoph Lameter45530c42012-11-28 16:23:07 +000089extern struct kmem_cache *create_kmalloc_cache(const char *name, size_t size,
90 unsigned long flags);
91extern void create_boot_cache(struct kmem_cache *, const char *name,
92 size_t size, unsigned long flags);
93
Joonsoo Kim423c9292014-10-09 15:26:22 -070094int slab_unmergeable(struct kmem_cache *s);
95struct kmem_cache *find_mergeable(size_t size, size_t align,
96 unsigned long flags, const char *name, void (*ctor)(void *));
Joonsoo Kim12220de2014-10-09 15:26:24 -070097#ifndef CONFIG_SLOB
Glauber Costa2633d7a2012-12-18 14:22:34 -080098struct kmem_cache *
Vladimir Davydova44cb942014-04-07 15:39:23 -070099__kmem_cache_alias(const char *name, size_t size, size_t align,
100 unsigned long flags, void (*ctor)(void *));
Joonsoo Kim423c9292014-10-09 15:26:22 -0700101
102unsigned long kmem_cache_flags(unsigned long object_size,
103 unsigned long flags, const char *name,
104 void (*ctor)(void *));
Christoph Lametercbb79692012-09-05 00:18:32 +0000105#else
Glauber Costa2633d7a2012-12-18 14:22:34 -0800106static inline struct kmem_cache *
Vladimir Davydova44cb942014-04-07 15:39:23 -0700107__kmem_cache_alias(const char *name, size_t size, size_t align,
108 unsigned long flags, void (*ctor)(void *))
Christoph Lametercbb79692012-09-05 00:18:32 +0000109{ return NULL; }
Joonsoo Kim423c9292014-10-09 15:26:22 -0700110
111static inline unsigned long kmem_cache_flags(unsigned long object_size,
112 unsigned long flags, const char *name,
113 void (*ctor)(void *))
114{
115 return flags;
116}
Christoph Lametercbb79692012-09-05 00:18:32 +0000117#endif
118
119
Glauber Costad8843922012-10-17 15:36:51 +0400120/* Legal flag mask for kmem_cache_create(), for various configurations */
121#define SLAB_CORE_FLAGS (SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA | SLAB_PANIC | \
122 SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS )
123
124#if defined(CONFIG_DEBUG_SLAB)
125#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER)
126#elif defined(CONFIG_SLUB_DEBUG)
127#define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \
Laura Abbottbecfda62016-03-15 14:55:06 -0700128 SLAB_TRACE | SLAB_CONSISTENCY_CHECKS)
Glauber Costad8843922012-10-17 15:36:51 +0400129#else
130#define SLAB_DEBUG_FLAGS (0)
131#endif
132
133#if defined(CONFIG_SLAB)
134#define SLAB_CACHE_FLAGS (SLAB_MEM_SPREAD | SLAB_NOLEAKTRACE | \
Vladimir Davydov230e9fc2016-01-14 15:18:15 -0800135 SLAB_RECLAIM_ACCOUNT | SLAB_TEMPORARY | \
136 SLAB_NOTRACK | SLAB_ACCOUNT)
Glauber Costad8843922012-10-17 15:36:51 +0400137#elif defined(CONFIG_SLUB)
138#define SLAB_CACHE_FLAGS (SLAB_NOLEAKTRACE | SLAB_RECLAIM_ACCOUNT | \
Vladimir Davydov230e9fc2016-01-14 15:18:15 -0800139 SLAB_TEMPORARY | SLAB_NOTRACK | SLAB_ACCOUNT)
Glauber Costad8843922012-10-17 15:36:51 +0400140#else
141#define SLAB_CACHE_FLAGS (0)
142#endif
143
144#define CACHE_CREATE_MASK (SLAB_CORE_FLAGS | SLAB_DEBUG_FLAGS | SLAB_CACHE_FLAGS)
145
Christoph Lameter945cf2b2012-09-04 23:18:33 +0000146int __kmem_cache_shutdown(struct kmem_cache *);
Dmitry Safonov52b4b952016-02-17 13:11:37 -0800147void __kmem_cache_release(struct kmem_cache *);
Vladimir Davydovd6e0b7f2015-02-12 14:59:47 -0800148int __kmem_cache_shrink(struct kmem_cache *, bool);
Christoph Lameter41a21282014-05-06 12:50:08 -0700149void slab_kmem_cache_release(struct kmem_cache *);
Christoph Lameter945cf2b2012-09-04 23:18:33 +0000150
Glauber Costab7454ad2012-10-19 18:20:25 +0400151struct seq_file;
152struct file;
Glauber Costab7454ad2012-10-19 18:20:25 +0400153
Glauber Costa0d7561c2012-10-19 18:20:27 +0400154struct slabinfo {
155 unsigned long active_objs;
156 unsigned long num_objs;
157 unsigned long active_slabs;
158 unsigned long num_slabs;
159 unsigned long shared_avail;
160 unsigned int limit;
161 unsigned int batchcount;
162 unsigned int shared;
163 unsigned int objects_per_slab;
164 unsigned int cache_order;
165};
166
167void get_slabinfo(struct kmem_cache *s, struct slabinfo *sinfo);
168void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *s);
Glauber Costab7454ad2012-10-19 18:20:25 +0400169ssize_t slabinfo_write(struct file *file, const char __user *buffer,
170 size_t count, loff_t *ppos);
Glauber Costaba6c4962012-12-18 14:22:27 -0800171
Christoph Lameter484748f2015-09-04 15:45:34 -0700172/*
173 * Generic implementation of bulk operations
174 * These are useful for situations in which the allocator cannot
Jesper Dangaard Brouer9f706d62016-03-15 14:54:03 -0700175 * perform optimizations. In that case segments of the object listed
Christoph Lameter484748f2015-09-04 15:45:34 -0700176 * may be allocated or freed using these operations.
177 */
178void __kmem_cache_free_bulk(struct kmem_cache *, size_t, void **);
Jesper Dangaard Brouer865762a2015-11-20 15:57:58 -0800179int __kmem_cache_alloc_bulk(struct kmem_cache *, gfp_t, size_t, void **);
Christoph Lameter484748f2015-09-04 15:45:34 -0700180
Johannes Weiner127424c2016-01-20 15:02:32 -0800181#if defined(CONFIG_MEMCG) && !defined(CONFIG_SLOB)
Vladimir Davydov426589f2015-02-12 14:59:23 -0800182/*
183 * Iterate over all memcg caches of the given root cache. The caller must hold
184 * slab_mutex.
185 */
186#define for_each_memcg_cache(iter, root) \
187 list_for_each_entry(iter, &(root)->memcg_params.list, \
188 memcg_params.list)
189
Glauber Costaba6c4962012-12-18 14:22:27 -0800190static inline bool is_root_cache(struct kmem_cache *s)
191{
Vladimir Davydovf7ce3192015-02-12 14:59:20 -0800192 return s->memcg_params.is_root_cache;
Glauber Costaba6c4962012-12-18 14:22:27 -0800193}
Glauber Costa2633d7a2012-12-18 14:22:34 -0800194
Glauber Costab9ce5ef2012-12-18 14:22:46 -0800195static inline bool slab_equal_or_root(struct kmem_cache *s,
Vladimir Davydovf7ce3192015-02-12 14:59:20 -0800196 struct kmem_cache *p)
Glauber Costab9ce5ef2012-12-18 14:22:46 -0800197{
Vladimir Davydovf7ce3192015-02-12 14:59:20 -0800198 return p == s || p == s->memcg_params.root_cache;
Glauber Costab9ce5ef2012-12-18 14:22:46 -0800199}
Glauber Costa749c5412012-12-18 14:23:01 -0800200
201/*
202 * We use suffixes to the name in memcg because we can't have caches
203 * created in the system with the same name. But when we print them
204 * locally, better refer to them with the base name
205 */
206static inline const char *cache_name(struct kmem_cache *s)
207{
208 if (!is_root_cache(s))
Vladimir Davydovf7ce3192015-02-12 14:59:20 -0800209 s = s->memcg_params.root_cache;
Glauber Costa749c5412012-12-18 14:23:01 -0800210 return s->name;
211}
212
Vladimir Davydovf8570262014-01-23 15:53:06 -0800213/*
214 * Note, we protect with RCU only the memcg_caches array, not per-memcg caches.
Vladimir Davydovf7ce3192015-02-12 14:59:20 -0800215 * That said the caller must assure the memcg's cache won't go away by either
216 * taking a css reference to the owner cgroup, or holding the slab_mutex.
Vladimir Davydovf8570262014-01-23 15:53:06 -0800217 */
Qiang Huang2ade4de2013-11-12 15:08:23 -0800218static inline struct kmem_cache *
219cache_from_memcg_idx(struct kmem_cache *s, int idx)
Glauber Costa749c5412012-12-18 14:23:01 -0800220{
Vladimir Davydov959c8962014-01-23 15:52:59 -0800221 struct kmem_cache *cachep;
Vladimir Davydovf7ce3192015-02-12 14:59:20 -0800222 struct memcg_cache_array *arr;
Vladimir Davydovf8570262014-01-23 15:53:06 -0800223
224 rcu_read_lock();
Vladimir Davydovf7ce3192015-02-12 14:59:20 -0800225 arr = rcu_dereference(s->memcg_params.memcg_caches);
Vladimir Davydov959c8962014-01-23 15:52:59 -0800226
227 /*
228 * Make sure we will access the up-to-date value. The code updating
229 * memcg_caches issues a write barrier to match this (see
Vladimir Davydovf7ce3192015-02-12 14:59:20 -0800230 * memcg_create_kmem_cache()).
Vladimir Davydov959c8962014-01-23 15:52:59 -0800231 */
Vladimir Davydovf7ce3192015-02-12 14:59:20 -0800232 cachep = lockless_dereference(arr->entries[idx]);
Pranith Kumar8df0c2d2014-12-10 15:42:28 -0800233 rcu_read_unlock();
234
Vladimir Davydov959c8962014-01-23 15:52:59 -0800235 return cachep;
Glauber Costa749c5412012-12-18 14:23:01 -0800236}
Glauber Costa943a4512012-12-18 14:23:03 -0800237
238static inline struct kmem_cache *memcg_root_cache(struct kmem_cache *s)
239{
240 if (is_root_cache(s))
241 return s;
Vladimir Davydovf7ce3192015-02-12 14:59:20 -0800242 return s->memcg_params.root_cache;
Glauber Costa943a4512012-12-18 14:23:03 -0800243}
Vladimir Davydov5dfb4172014-06-04 16:06:38 -0700244
Vladimir Davydovf3ccb2c42015-11-05 18:49:01 -0800245static __always_inline int memcg_charge_slab(struct page *page,
246 gfp_t gfp, int order,
247 struct kmem_cache *s)
Vladimir Davydov5dfb4172014-06-04 16:06:38 -0700248{
Vladimir Davydov27ee57c2016-03-17 14:17:35 -0700249 int ret;
250
Vladimir Davydov5dfb4172014-06-04 16:06:38 -0700251 if (!memcg_kmem_enabled())
252 return 0;
253 if (is_root_cache(s))
254 return 0;
Vladimir Davydov27ee57c2016-03-17 14:17:35 -0700255
256 ret = __memcg_kmem_charge_memcg(page, gfp, order,
257 s->memcg_params.memcg);
258 if (ret)
259 return ret;
260
261 memcg_kmem_update_page_stat(page,
262 (s->flags & SLAB_RECLAIM_ACCOUNT) ?
263 MEMCG_SLAB_RECLAIMABLE : MEMCG_SLAB_UNRECLAIMABLE,
264 1 << order);
265 return 0;
266}
267
268static __always_inline void memcg_uncharge_slab(struct page *page, int order,
269 struct kmem_cache *s)
270{
271 memcg_kmem_update_page_stat(page,
272 (s->flags & SLAB_RECLAIM_ACCOUNT) ?
273 MEMCG_SLAB_RECLAIMABLE : MEMCG_SLAB_UNRECLAIMABLE,
274 -(1 << order));
275 memcg_kmem_uncharge(page, order);
Vladimir Davydov5dfb4172014-06-04 16:06:38 -0700276}
Vladimir Davydovf7ce3192015-02-12 14:59:20 -0800277
278extern void slab_init_memcg_params(struct kmem_cache *);
279
Johannes Weiner127424c2016-01-20 15:02:32 -0800280#else /* CONFIG_MEMCG && !CONFIG_SLOB */
Vladimir Davydovf7ce3192015-02-12 14:59:20 -0800281
Vladimir Davydov426589f2015-02-12 14:59:23 -0800282#define for_each_memcg_cache(iter, root) \
283 for ((void)(iter), (void)(root); 0; )
Vladimir Davydov426589f2015-02-12 14:59:23 -0800284
Glauber Costaba6c4962012-12-18 14:22:27 -0800285static inline bool is_root_cache(struct kmem_cache *s)
286{
287 return true;
288}
289
Glauber Costab9ce5ef2012-12-18 14:22:46 -0800290static inline bool slab_equal_or_root(struct kmem_cache *s,
291 struct kmem_cache *p)
292{
293 return true;
294}
Glauber Costa749c5412012-12-18 14:23:01 -0800295
296static inline const char *cache_name(struct kmem_cache *s)
297{
298 return s->name;
299}
300
Qiang Huang2ade4de2013-11-12 15:08:23 -0800301static inline struct kmem_cache *
302cache_from_memcg_idx(struct kmem_cache *s, int idx)
Glauber Costa749c5412012-12-18 14:23:01 -0800303{
304 return NULL;
305}
Glauber Costa943a4512012-12-18 14:23:03 -0800306
307static inline struct kmem_cache *memcg_root_cache(struct kmem_cache *s)
308{
309 return s;
310}
Vladimir Davydov5dfb4172014-06-04 16:06:38 -0700311
Vladimir Davydovf3ccb2c42015-11-05 18:49:01 -0800312static inline int memcg_charge_slab(struct page *page, gfp_t gfp, int order,
313 struct kmem_cache *s)
Vladimir Davydov5dfb4172014-06-04 16:06:38 -0700314{
315 return 0;
316}
317
Vladimir Davydov27ee57c2016-03-17 14:17:35 -0700318static inline void memcg_uncharge_slab(struct page *page, int order,
319 struct kmem_cache *s)
320{
321}
322
Vladimir Davydovf7ce3192015-02-12 14:59:20 -0800323static inline void slab_init_memcg_params(struct kmem_cache *s)
324{
325}
Johannes Weiner127424c2016-01-20 15:02:32 -0800326#endif /* CONFIG_MEMCG && !CONFIG_SLOB */
Glauber Costab9ce5ef2012-12-18 14:22:46 -0800327
328static inline struct kmem_cache *cache_from_obj(struct kmem_cache *s, void *x)
329{
330 struct kmem_cache *cachep;
331 struct page *page;
332
333 /*
334 * When kmemcg is not being used, both assignments should return the
335 * same value. but we don't want to pay the assignment price in that
336 * case. If it is not compiled in, the compiler should be smart enough
337 * to not do even the assignment. In that case, slab_equal_or_root
338 * will also be a constant.
339 */
Laura Abbottbecfda62016-03-15 14:55:06 -0700340 if (!memcg_kmem_enabled() &&
341 !unlikely(s->flags & SLAB_CONSISTENCY_CHECKS))
Glauber Costab9ce5ef2012-12-18 14:22:46 -0800342 return s;
343
344 page = virt_to_head_page(x);
345 cachep = page->slab_cache;
346 if (slab_equal_or_root(cachep, s))
347 return cachep;
348
349 pr_err("%s: Wrong slab cache. %s but object is from %s\n",
Daniel Borkmann2d16e0fd2015-09-04 15:45:57 -0700350 __func__, s->name, cachep->name);
Glauber Costab9ce5ef2012-12-18 14:22:46 -0800351 WARN_ON_ONCE(1);
352 return s;
353}
Christoph Lameterca349562013-01-10 19:14:19 +0000354
Jesper Dangaard Brouer11c7aec2016-03-15 14:53:35 -0700355static inline size_t slab_ksize(const struct kmem_cache *s)
356{
357#ifndef CONFIG_SLUB
358 return s->object_size;
359
360#else /* CONFIG_SLUB */
361# ifdef CONFIG_SLUB_DEBUG
362 /*
363 * Debugging requires use of the padding between object
364 * and whatever may come after it.
365 */
366 if (s->flags & (SLAB_RED_ZONE | SLAB_POISON))
367 return s->object_size;
368# endif
369 /*
370 * If we have the need to store the freelist pointer
371 * back there or track user information then we can
372 * only use the space before that information.
373 */
374 if (s->flags & (SLAB_DESTROY_BY_RCU | SLAB_STORE_USER))
375 return s->inuse;
376 /*
377 * Else we can use all the padding etc for the allocation
378 */
379 return s->size;
380#endif
381}
382
383static inline struct kmem_cache *slab_pre_alloc_hook(struct kmem_cache *s,
384 gfp_t flags)
385{
386 flags &= gfp_allowed_mask;
387 lockdep_trace_alloc(flags);
388 might_sleep_if(gfpflags_allow_blocking(flags));
389
Jesper Dangaard Brouerfab99632016-03-15 14:53:38 -0700390 if (should_failslab(s, flags))
Jesper Dangaard Brouer11c7aec2016-03-15 14:53:35 -0700391 return NULL;
392
393 return memcg_kmem_get_cache(s, flags);
394}
395
396static inline void slab_post_alloc_hook(struct kmem_cache *s, gfp_t flags,
397 size_t size, void **p)
398{
399 size_t i;
400
401 flags &= gfp_allowed_mask;
402 for (i = 0; i < size; i++) {
403 void *object = p[i];
404
405 kmemcheck_slab_alloc(s, flags, object, slab_ksize(s));
406 kmemleak_alloc_recursive(object, s->object_size, 1,
407 s->flags, flags);
Alexander Potapenko505f5dc2016-03-25 14:22:02 -0700408 kasan_slab_alloc(s, object, flags);
Jesper Dangaard Brouer11c7aec2016-03-15 14:53:35 -0700409 }
410 memcg_kmem_put_cache(s);
411}
412
Christoph Lameter44c53562014-08-06 16:04:07 -0700413#ifndef CONFIG_SLOB
Christoph Lameterca349562013-01-10 19:14:19 +0000414/*
415 * The slab lists for all objects.
416 */
417struct kmem_cache_node {
418 spinlock_t list_lock;
419
420#ifdef CONFIG_SLAB
421 struct list_head slabs_partial; /* partial list first, better asm code */
422 struct list_head slabs_full;
423 struct list_head slabs_free;
424 unsigned long free_objects;
425 unsigned int free_limit;
426 unsigned int colour_next; /* Per-node cache coloring */
427 struct array_cache *shared; /* shared per node */
Joonsoo Kimc8522a32014-08-06 16:04:29 -0700428 struct alien_cache **alien; /* on other nodes */
Christoph Lameterca349562013-01-10 19:14:19 +0000429 unsigned long next_reap; /* updated without locking */
430 int free_touched; /* updated without locking */
431#endif
432
433#ifdef CONFIG_SLUB
434 unsigned long nr_partial;
435 struct list_head partial;
436#ifdef CONFIG_SLUB_DEBUG
437 atomic_long_t nr_slabs;
438 atomic_long_t total_objects;
439 struct list_head full;
440#endif
441#endif
442
443};
Wanpeng Lie25839f2013-07-04 08:33:23 +0800444
Christoph Lameter44c53562014-08-06 16:04:07 -0700445static inline struct kmem_cache_node *get_node(struct kmem_cache *s, int node)
446{
447 return s->node[node];
448}
449
450/*
451 * Iterator over all nodes. The body will be executed for each node that has
452 * a kmem_cache_node structure allocated (which is true for all online nodes)
453 */
454#define for_each_kmem_cache_node(__s, __node, __n) \
Mikulas Patocka91635822014-10-09 15:26:20 -0700455 for (__node = 0; __node < nr_node_ids; __node++) \
456 if ((__n = get_node(__s, __node)))
Christoph Lameter44c53562014-08-06 16:04:07 -0700457
458#endif
459
Vladimir Davydov1df3b262014-12-10 15:42:16 -0800460void *slab_start(struct seq_file *m, loff_t *pos);
Wanpeng Li276a2432013-07-08 08:08:28 +0800461void *slab_next(struct seq_file *m, void *p, loff_t *pos);
462void slab_stop(struct seq_file *m, void *p);
Vladimir Davydovb0475012014-12-10 15:44:19 -0800463int memcg_slab_show(struct seq_file *m, void *p);
Andrey Ryabinin5240ab42014-08-06 16:04:14 -0700464
Alexander Potapenko55834c52016-05-20 16:59:11 -0700465void ___cache_free(struct kmem_cache *cache, void *x, unsigned long addr);
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Andrey Ryabinin5240ab42014-08-06 16:04:14 -0700467#endif /* MM_SLAB_H */