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Commit | Line | Data |
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97d06609 CL |
1 | #ifndef MM_SLAB_H |
2 | #define MM_SLAB_H | |
3 | /* | |
4 | * Internal slab definitions | |
5 | */ | |
6 | ||
07f361b2 JK |
7 | #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 | */ | |
19 | struct 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> | |
11c7aec2 JDB |
41 | #include <linux/fault-inject.h> |
42 | #include <linux/kmemcheck.h> | |
43 | #include <linux/kasan.h> | |
44 | #include <linux/kmemleak.h> | |
7c00fce9 | 45 | #include <linux/random.h> |
07f361b2 | 46 | |
97d06609 CL |
47 | /* |
48 | * State of the slab allocator. | |
49 | * | |
50 | * This is used to describe the states of the allocator during bootup. | |
51 | * Allocators use this to gradually bootstrap themselves. Most allocators | |
52 | * have the problem that the structures used for managing slab caches are | |
53 | * allocated from slab caches themselves. | |
54 | */ | |
55 | enum slab_state { | |
56 | DOWN, /* No slab functionality yet */ | |
57 | PARTIAL, /* SLUB: kmem_cache_node available */ | |
ce8eb6c4 | 58 | PARTIAL_NODE, /* SLAB: kmalloc size for node struct available */ |
97d06609 CL |
59 | UP, /* Slab caches usable but not all extras yet */ |
60 | FULL /* Everything is working */ | |
61 | }; | |
62 | ||
63 | extern enum slab_state slab_state; | |
64 | ||
18004c5d CL |
65 | /* The slab cache mutex protects the management structures during changes */ |
66 | extern struct mutex slab_mutex; | |
9b030cb8 CL |
67 | |
68 | /* The list of all slab caches on the system */ | |
18004c5d CL |
69 | extern struct list_head slab_caches; |
70 | ||
9b030cb8 CL |
71 | /* The slab cache that manages slab cache information */ |
72 | extern struct kmem_cache *kmem_cache; | |
73 | ||
af3b5f87 VB |
74 | /* A table of kmalloc cache names and sizes */ |
75 | extern const struct kmalloc_info_struct { | |
76 | const char *name; | |
77 | unsigned long size; | |
78 | } kmalloc_info[]; | |
79 | ||
45906855 CL |
80 | unsigned long calculate_alignment(unsigned long flags, |
81 | unsigned long align, unsigned long size); | |
82 | ||
f97d5f63 CL |
83 | #ifndef CONFIG_SLOB |
84 | /* Kmalloc array related functions */ | |
34cc6990 | 85 | void setup_kmalloc_cache_index_table(void); |
f97d5f63 | 86 | void create_kmalloc_caches(unsigned long); |
2c59dd65 CL |
87 | |
88 | /* Find the kmalloc slab corresponding for a certain size */ | |
89 | struct kmem_cache *kmalloc_slab(size_t, gfp_t); | |
f97d5f63 CL |
90 | #endif |
91 | ||
92 | ||
9b030cb8 | 93 | /* Functions provided by the slab allocators */ |
8a13a4cc | 94 | extern int __kmem_cache_create(struct kmem_cache *, unsigned long flags); |
97d06609 | 95 | |
45530c44 CL |
96 | extern struct kmem_cache *create_kmalloc_cache(const char *name, size_t size, |
97 | unsigned long flags); | |
98 | extern void create_boot_cache(struct kmem_cache *, const char *name, | |
99 | size_t size, unsigned long flags); | |
100 | ||
423c929c JK |
101 | int slab_unmergeable(struct kmem_cache *s); |
102 | struct kmem_cache *find_mergeable(size_t size, size_t align, | |
103 | unsigned long flags, const char *name, void (*ctor)(void *)); | |
12220dea | 104 | #ifndef CONFIG_SLOB |
2633d7a0 | 105 | struct kmem_cache * |
a44cb944 VD |
106 | __kmem_cache_alias(const char *name, size_t size, size_t align, |
107 | unsigned long flags, void (*ctor)(void *)); | |
423c929c JK |
108 | |
109 | unsigned long kmem_cache_flags(unsigned long object_size, | |
110 | unsigned long flags, const char *name, | |
111 | void (*ctor)(void *)); | |
cbb79694 | 112 | #else |
2633d7a0 | 113 | static inline struct kmem_cache * |
a44cb944 VD |
114 | __kmem_cache_alias(const char *name, size_t size, size_t align, |
115 | unsigned long flags, void (*ctor)(void *)) | |
cbb79694 | 116 | { return NULL; } |
423c929c JK |
117 | |
118 | static inline unsigned long kmem_cache_flags(unsigned long object_size, | |
119 | unsigned long flags, const char *name, | |
120 | void (*ctor)(void *)) | |
121 | { | |
122 | return flags; | |
123 | } | |
cbb79694 CL |
124 | #endif |
125 | ||
126 | ||
d8843922 GC |
127 | /* Legal flag mask for kmem_cache_create(), for various configurations */ |
128 | #define SLAB_CORE_FLAGS (SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA | SLAB_PANIC | \ | |
129 | SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS ) | |
130 | ||
131 | #if defined(CONFIG_DEBUG_SLAB) | |
132 | #define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER) | |
133 | #elif defined(CONFIG_SLUB_DEBUG) | |
134 | #define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER | \ | |
becfda68 | 135 | SLAB_TRACE | SLAB_CONSISTENCY_CHECKS) |
d8843922 GC |
136 | #else |
137 | #define SLAB_DEBUG_FLAGS (0) | |
138 | #endif | |
139 | ||
140 | #if defined(CONFIG_SLAB) | |
141 | #define SLAB_CACHE_FLAGS (SLAB_MEM_SPREAD | SLAB_NOLEAKTRACE | \ | |
230e9fc2 VD |
142 | SLAB_RECLAIM_ACCOUNT | SLAB_TEMPORARY | \ |
143 | SLAB_NOTRACK | SLAB_ACCOUNT) | |
d8843922 GC |
144 | #elif defined(CONFIG_SLUB) |
145 | #define SLAB_CACHE_FLAGS (SLAB_NOLEAKTRACE | SLAB_RECLAIM_ACCOUNT | \ | |
230e9fc2 | 146 | SLAB_TEMPORARY | SLAB_NOTRACK | SLAB_ACCOUNT) |
d8843922 GC |
147 | #else |
148 | #define SLAB_CACHE_FLAGS (0) | |
149 | #endif | |
150 | ||
e70954fd | 151 | /* Common flags available with current configuration */ |
d8843922 GC |
152 | #define CACHE_CREATE_MASK (SLAB_CORE_FLAGS | SLAB_DEBUG_FLAGS | SLAB_CACHE_FLAGS) |
153 | ||
e70954fd TG |
154 | /* Common flags permitted for kmem_cache_create */ |
155 | #define SLAB_FLAGS_PERMITTED (SLAB_CORE_FLAGS | \ | |
156 | SLAB_RED_ZONE | \ | |
157 | SLAB_POISON | \ | |
158 | SLAB_STORE_USER | \ | |
159 | SLAB_TRACE | \ | |
160 | SLAB_CONSISTENCY_CHECKS | \ | |
161 | SLAB_MEM_SPREAD | \ | |
162 | SLAB_NOLEAKTRACE | \ | |
163 | SLAB_RECLAIM_ACCOUNT | \ | |
164 | SLAB_TEMPORARY | \ | |
165 | SLAB_NOTRACK | \ | |
166 | SLAB_ACCOUNT) | |
167 | ||
945cf2b6 | 168 | int __kmem_cache_shutdown(struct kmem_cache *); |
52b4b950 | 169 | void __kmem_cache_release(struct kmem_cache *); |
290b6a58 | 170 | int __kmem_cache_shrink(struct kmem_cache *, bool); |
41a21285 | 171 | void slab_kmem_cache_release(struct kmem_cache *); |
945cf2b6 | 172 | |
b7454ad3 GC |
173 | struct seq_file; |
174 | struct file; | |
b7454ad3 | 175 | |
0d7561c6 GC |
176 | struct slabinfo { |
177 | unsigned long active_objs; | |
178 | unsigned long num_objs; | |
179 | unsigned long active_slabs; | |
180 | unsigned long num_slabs; | |
181 | unsigned long shared_avail; | |
182 | unsigned int limit; | |
183 | unsigned int batchcount; | |
184 | unsigned int shared; | |
185 | unsigned int objects_per_slab; | |
186 | unsigned int cache_order; | |
187 | }; | |
188 | ||
189 | void get_slabinfo(struct kmem_cache *s, struct slabinfo *sinfo); | |
190 | void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *s); | |
b7454ad3 GC |
191 | ssize_t slabinfo_write(struct file *file, const char __user *buffer, |
192 | size_t count, loff_t *ppos); | |
ba6c496e | 193 | |
484748f0 CL |
194 | /* |
195 | * Generic implementation of bulk operations | |
196 | * These are useful for situations in which the allocator cannot | |
9f706d68 | 197 | * perform optimizations. In that case segments of the object listed |
484748f0 CL |
198 | * may be allocated or freed using these operations. |
199 | */ | |
200 | void __kmem_cache_free_bulk(struct kmem_cache *, size_t, void **); | |
865762a8 | 201 | int __kmem_cache_alloc_bulk(struct kmem_cache *, gfp_t, size_t, void **); |
484748f0 | 202 | |
127424c8 | 203 | #if defined(CONFIG_MEMCG) && !defined(CONFIG_SLOB) |
426589f5 VD |
204 | /* |
205 | * Iterate over all memcg caches of the given root cache. The caller must hold | |
206 | * slab_mutex. | |
207 | */ | |
208 | #define for_each_memcg_cache(iter, root) \ | |
9eeadc8b TH |
209 | list_for_each_entry(iter, &(root)->memcg_params.children, \ |
210 | memcg_params.children_node) | |
426589f5 | 211 | |
ba6c496e GC |
212 | static inline bool is_root_cache(struct kmem_cache *s) |
213 | { | |
9eeadc8b | 214 | return !s->memcg_params.root_cache; |
ba6c496e | 215 | } |
2633d7a0 | 216 | |
b9ce5ef4 | 217 | static inline bool slab_equal_or_root(struct kmem_cache *s, |
f7ce3190 | 218 | struct kmem_cache *p) |
b9ce5ef4 | 219 | { |
f7ce3190 | 220 | return p == s || p == s->memcg_params.root_cache; |
b9ce5ef4 | 221 | } |
749c5415 GC |
222 | |
223 | /* | |
224 | * We use suffixes to the name in memcg because we can't have caches | |
225 | * created in the system with the same name. But when we print them | |
226 | * locally, better refer to them with the base name | |
227 | */ | |
228 | static inline const char *cache_name(struct kmem_cache *s) | |
229 | { | |
230 | if (!is_root_cache(s)) | |
f7ce3190 | 231 | s = s->memcg_params.root_cache; |
749c5415 GC |
232 | return s->name; |
233 | } | |
234 | ||
f8570263 VD |
235 | /* |
236 | * Note, we protect with RCU only the memcg_caches array, not per-memcg caches. | |
f7ce3190 VD |
237 | * That said the caller must assure the memcg's cache won't go away by either |
238 | * taking a css reference to the owner cgroup, or holding the slab_mutex. | |
f8570263 | 239 | */ |
2ade4de8 QH |
240 | static inline struct kmem_cache * |
241 | cache_from_memcg_idx(struct kmem_cache *s, int idx) | |
749c5415 | 242 | { |
959c8963 | 243 | struct kmem_cache *cachep; |
f7ce3190 | 244 | struct memcg_cache_array *arr; |
f8570263 VD |
245 | |
246 | rcu_read_lock(); | |
f7ce3190 | 247 | arr = rcu_dereference(s->memcg_params.memcg_caches); |
959c8963 VD |
248 | |
249 | /* | |
250 | * Make sure we will access the up-to-date value. The code updating | |
251 | * memcg_caches issues a write barrier to match this (see | |
f7ce3190 | 252 | * memcg_create_kmem_cache()). |
959c8963 | 253 | */ |
f7ce3190 | 254 | cachep = lockless_dereference(arr->entries[idx]); |
8df0c2dc PK |
255 | rcu_read_unlock(); |
256 | ||
959c8963 | 257 | return cachep; |
749c5415 | 258 | } |
943a451a GC |
259 | |
260 | static inline struct kmem_cache *memcg_root_cache(struct kmem_cache *s) | |
261 | { | |
262 | if (is_root_cache(s)) | |
263 | return s; | |
f7ce3190 | 264 | return s->memcg_params.root_cache; |
943a451a | 265 | } |
5dfb4175 | 266 | |
f3ccb2c4 VD |
267 | static __always_inline int memcg_charge_slab(struct page *page, |
268 | gfp_t gfp, int order, | |
269 | struct kmem_cache *s) | |
5dfb4175 | 270 | { |
27ee57c9 VD |
271 | int ret; |
272 | ||
5dfb4175 VD |
273 | if (!memcg_kmem_enabled()) |
274 | return 0; | |
275 | if (is_root_cache(s)) | |
276 | return 0; | |
27ee57c9 | 277 | |
45264778 | 278 | ret = memcg_kmem_charge_memcg(page, gfp, order, s->memcg_params.memcg); |
27ee57c9 VD |
279 | if (ret) |
280 | return ret; | |
281 | ||
282 | memcg_kmem_update_page_stat(page, | |
283 | (s->flags & SLAB_RECLAIM_ACCOUNT) ? | |
284 | MEMCG_SLAB_RECLAIMABLE : MEMCG_SLAB_UNRECLAIMABLE, | |
285 | 1 << order); | |
286 | return 0; | |
287 | } | |
288 | ||
289 | static __always_inline void memcg_uncharge_slab(struct page *page, int order, | |
290 | struct kmem_cache *s) | |
291 | { | |
45264778 VD |
292 | if (!memcg_kmem_enabled()) |
293 | return; | |
294 | ||
27ee57c9 VD |
295 | memcg_kmem_update_page_stat(page, |
296 | (s->flags & SLAB_RECLAIM_ACCOUNT) ? | |
297 | MEMCG_SLAB_RECLAIMABLE : MEMCG_SLAB_UNRECLAIMABLE, | |
298 | -(1 << order)); | |
299 | memcg_kmem_uncharge(page, order); | |
5dfb4175 | 300 | } |
f7ce3190 VD |
301 | |
302 | extern void slab_init_memcg_params(struct kmem_cache *); | |
303 | ||
127424c8 | 304 | #else /* CONFIG_MEMCG && !CONFIG_SLOB */ |
f7ce3190 | 305 | |
426589f5 VD |
306 | #define for_each_memcg_cache(iter, root) \ |
307 | for ((void)(iter), (void)(root); 0; ) | |
426589f5 | 308 | |
ba6c496e GC |
309 | static inline bool is_root_cache(struct kmem_cache *s) |
310 | { | |
311 | return true; | |
312 | } | |
313 | ||
b9ce5ef4 GC |
314 | static inline bool slab_equal_or_root(struct kmem_cache *s, |
315 | struct kmem_cache *p) | |
316 | { | |
317 | return true; | |
318 | } | |
749c5415 GC |
319 | |
320 | static inline const char *cache_name(struct kmem_cache *s) | |
321 | { | |
322 | return s->name; | |
323 | } | |
324 | ||
2ade4de8 QH |
325 | static inline struct kmem_cache * |
326 | cache_from_memcg_idx(struct kmem_cache *s, int idx) | |
749c5415 GC |
327 | { |
328 | return NULL; | |
329 | } | |
943a451a GC |
330 | |
331 | static inline struct kmem_cache *memcg_root_cache(struct kmem_cache *s) | |
332 | { | |
333 | return s; | |
334 | } | |
5dfb4175 | 335 | |
f3ccb2c4 VD |
336 | static inline int memcg_charge_slab(struct page *page, gfp_t gfp, int order, |
337 | struct kmem_cache *s) | |
5dfb4175 VD |
338 | { |
339 | return 0; | |
340 | } | |
341 | ||
27ee57c9 VD |
342 | static inline void memcg_uncharge_slab(struct page *page, int order, |
343 | struct kmem_cache *s) | |
344 | { | |
345 | } | |
346 | ||
f7ce3190 VD |
347 | static inline void slab_init_memcg_params(struct kmem_cache *s) |
348 | { | |
349 | } | |
127424c8 | 350 | #endif /* CONFIG_MEMCG && !CONFIG_SLOB */ |
b9ce5ef4 GC |
351 | |
352 | static inline struct kmem_cache *cache_from_obj(struct kmem_cache *s, void *x) | |
353 | { | |
354 | struct kmem_cache *cachep; | |
355 | struct page *page; | |
356 | ||
357 | /* | |
358 | * When kmemcg is not being used, both assignments should return the | |
359 | * same value. but we don't want to pay the assignment price in that | |
360 | * case. If it is not compiled in, the compiler should be smart enough | |
361 | * to not do even the assignment. In that case, slab_equal_or_root | |
362 | * will also be a constant. | |
363 | */ | |
becfda68 LA |
364 | if (!memcg_kmem_enabled() && |
365 | !unlikely(s->flags & SLAB_CONSISTENCY_CHECKS)) | |
b9ce5ef4 GC |
366 | return s; |
367 | ||
368 | page = virt_to_head_page(x); | |
369 | cachep = page->slab_cache; | |
370 | if (slab_equal_or_root(cachep, s)) | |
371 | return cachep; | |
372 | ||
373 | pr_err("%s: Wrong slab cache. %s but object is from %s\n", | |
2d16e0fd | 374 | __func__, s->name, cachep->name); |
b9ce5ef4 GC |
375 | WARN_ON_ONCE(1); |
376 | return s; | |
377 | } | |
ca34956b | 378 | |
11c7aec2 JDB |
379 | static inline size_t slab_ksize(const struct kmem_cache *s) |
380 | { | |
381 | #ifndef CONFIG_SLUB | |
382 | return s->object_size; | |
383 | ||
384 | #else /* CONFIG_SLUB */ | |
385 | # ifdef CONFIG_SLUB_DEBUG | |
386 | /* | |
387 | * Debugging requires use of the padding between object | |
388 | * and whatever may come after it. | |
389 | */ | |
390 | if (s->flags & (SLAB_RED_ZONE | SLAB_POISON)) | |
391 | return s->object_size; | |
392 | # endif | |
80a9201a AP |
393 | if (s->flags & SLAB_KASAN) |
394 | return s->object_size; | |
11c7aec2 JDB |
395 | /* |
396 | * If we have the need to store the freelist pointer | |
397 | * back there or track user information then we can | |
398 | * only use the space before that information. | |
399 | */ | |
400 | if (s->flags & (SLAB_DESTROY_BY_RCU | SLAB_STORE_USER)) | |
401 | return s->inuse; | |
402 | /* | |
403 | * Else we can use all the padding etc for the allocation | |
404 | */ | |
405 | return s->size; | |
406 | #endif | |
407 | } | |
408 | ||
409 | static inline struct kmem_cache *slab_pre_alloc_hook(struct kmem_cache *s, | |
410 | gfp_t flags) | |
411 | { | |
412 | flags &= gfp_allowed_mask; | |
413 | lockdep_trace_alloc(flags); | |
414 | might_sleep_if(gfpflags_allow_blocking(flags)); | |
415 | ||
fab9963a | 416 | if (should_failslab(s, flags)) |
11c7aec2 JDB |
417 | return NULL; |
418 | ||
45264778 VD |
419 | if (memcg_kmem_enabled() && |
420 | ((flags & __GFP_ACCOUNT) || (s->flags & SLAB_ACCOUNT))) | |
421 | return memcg_kmem_get_cache(s); | |
422 | ||
423 | return s; | |
11c7aec2 JDB |
424 | } |
425 | ||
426 | static inline void slab_post_alloc_hook(struct kmem_cache *s, gfp_t flags, | |
427 | size_t size, void **p) | |
428 | { | |
429 | size_t i; | |
430 | ||
431 | flags &= gfp_allowed_mask; | |
432 | for (i = 0; i < size; i++) { | |
433 | void *object = p[i]; | |
434 | ||
435 | kmemcheck_slab_alloc(s, flags, object, slab_ksize(s)); | |
436 | kmemleak_alloc_recursive(object, s->object_size, 1, | |
437 | s->flags, flags); | |
505f5dcb | 438 | kasan_slab_alloc(s, object, flags); |
11c7aec2 | 439 | } |
45264778 VD |
440 | |
441 | if (memcg_kmem_enabled()) | |
442 | memcg_kmem_put_cache(s); | |
11c7aec2 JDB |
443 | } |
444 | ||
44c5356f | 445 | #ifndef CONFIG_SLOB |
ca34956b CL |
446 | /* |
447 | * The slab lists for all objects. | |
448 | */ | |
449 | struct kmem_cache_node { | |
450 | spinlock_t list_lock; | |
451 | ||
452 | #ifdef CONFIG_SLAB | |
453 | struct list_head slabs_partial; /* partial list first, better asm code */ | |
454 | struct list_head slabs_full; | |
455 | struct list_head slabs_free; | |
bf00bd34 DR |
456 | unsigned long total_slabs; /* length of all slab lists */ |
457 | unsigned long free_slabs; /* length of free slab list only */ | |
ca34956b CL |
458 | unsigned long free_objects; |
459 | unsigned int free_limit; | |
460 | unsigned int colour_next; /* Per-node cache coloring */ | |
461 | struct array_cache *shared; /* shared per node */ | |
c8522a3a | 462 | struct alien_cache **alien; /* on other nodes */ |
ca34956b CL |
463 | unsigned long next_reap; /* updated without locking */ |
464 | int free_touched; /* updated without locking */ | |
465 | #endif | |
466 | ||
467 | #ifdef CONFIG_SLUB | |
468 | unsigned long nr_partial; | |
469 | struct list_head partial; | |
470 | #ifdef CONFIG_SLUB_DEBUG | |
471 | atomic_long_t nr_slabs; | |
472 | atomic_long_t total_objects; | |
473 | struct list_head full; | |
474 | #endif | |
475 | #endif | |
476 | ||
477 | }; | |
e25839f6 | 478 | |
44c5356f CL |
479 | static inline struct kmem_cache_node *get_node(struct kmem_cache *s, int node) |
480 | { | |
481 | return s->node[node]; | |
482 | } | |
483 | ||
484 | /* | |
485 | * Iterator over all nodes. The body will be executed for each node that has | |
486 | * a kmem_cache_node structure allocated (which is true for all online nodes) | |
487 | */ | |
488 | #define for_each_kmem_cache_node(__s, __node, __n) \ | |
9163582c MP |
489 | for (__node = 0; __node < nr_node_ids; __node++) \ |
490 | if ((__n = get_node(__s, __node))) | |
44c5356f CL |
491 | |
492 | #endif | |
493 | ||
1df3b26f | 494 | void *slab_start(struct seq_file *m, loff_t *pos); |
276a2439 WL |
495 | void *slab_next(struct seq_file *m, void *p, loff_t *pos); |
496 | void slab_stop(struct seq_file *m, void *p); | |
b047501c | 497 | int memcg_slab_show(struct seq_file *m, void *p); |
5240ab40 | 498 | |
55834c59 AP |
499 | void ___cache_free(struct kmem_cache *cache, void *x, unsigned long addr); |
500 | ||
7c00fce9 TG |
501 | #ifdef CONFIG_SLAB_FREELIST_RANDOM |
502 | int cache_random_seq_create(struct kmem_cache *cachep, unsigned int count, | |
503 | gfp_t gfp); | |
504 | void cache_random_seq_destroy(struct kmem_cache *cachep); | |
505 | #else | |
506 | static inline int cache_random_seq_create(struct kmem_cache *cachep, | |
507 | unsigned int count, gfp_t gfp) | |
508 | { | |
509 | return 0; | |
510 | } | |
511 | static inline void cache_random_seq_destroy(struct kmem_cache *cachep) { } | |
512 | #endif /* CONFIG_SLAB_FREELIST_RANDOM */ | |
513 | ||
5240ab40 | 514 | #endif /* MM_SLAB_H */ |