aboutsummaryrefslogtreecommitdiffstats
path: root/mm/slub.c
diff options
context:
space:
mode:
Diffstat (limited to 'mm/slub.c')
-rw-r--r--mm/slub.c58
1 files changed, 29 insertions, 29 deletions
diff --git a/mm/slub.c b/mm/slub.c
index dfbd0d874a00..b9e05366afda 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -195,6 +195,18 @@ static enum {
195static DECLARE_RWSEM(slub_lock); 195static DECLARE_RWSEM(slub_lock);
196LIST_HEAD(slab_caches); 196LIST_HEAD(slab_caches);
197 197
198/*
199 * Tracking user of a slab.
200 */
201struct track {
202 void *addr; /* Called from address */
203 int cpu; /* Was running on cpu */
204 int pid; /* Pid context */
205 unsigned long when; /* When did the operation occur */
206};
207
208enum track_item { TRACK_ALLOC, TRACK_FREE };
209
198#ifdef CONFIG_SYSFS 210#ifdef CONFIG_SYSFS
199static int sysfs_slab_add(struct kmem_cache *); 211static int sysfs_slab_add(struct kmem_cache *);
200static int sysfs_slab_alias(struct kmem_cache *, const char *); 212static int sysfs_slab_alias(struct kmem_cache *, const char *);
@@ -223,6 +235,23 @@ static inline struct kmem_cache_node *get_node(struct kmem_cache *s, int node)
223#endif 235#endif
224} 236}
225 237
238static inline int check_valid_pointer(struct kmem_cache *s,
239 struct page *page, const void *object)
240{
241 void *base;
242
243 if (!object)
244 return 1;
245
246 base = page_address(page);
247 if (object < base || object >= base + s->objects * s->size ||
248 (object - base) % s->size) {
249 return 0;
250 }
251
252 return 1;
253}
254
226/* 255/*
227 * Slow version of get and set free pointer. 256 * Slow version of get and set free pointer.
228 * 257 *
@@ -290,18 +319,6 @@ static void print_section(char *text, u8 *addr, unsigned int length)
290 } 319 }
291} 320}
292 321
293/*
294 * Tracking user of a slab.
295 */
296struct track {
297 void *addr; /* Called from address */
298 int cpu; /* Was running on cpu */
299 int pid; /* Pid context */
300 unsigned long when; /* When did the operation occur */
301};
302
303enum track_item { TRACK_ALLOC, TRACK_FREE };
304
305static struct track *get_track(struct kmem_cache *s, void *object, 322static struct track *get_track(struct kmem_cache *s, void *object,
306 enum track_item alloc) 323 enum track_item alloc)
307{ 324{
@@ -436,23 +453,6 @@ static int check_bytes(u8 *start, unsigned int value, unsigned int bytes)
436 return 1; 453 return 1;
437} 454}
438 455
439static inline int check_valid_pointer(struct kmem_cache *s,
440 struct page *page, const void *object)
441{
442 void *base;
443
444 if (!object)
445 return 1;
446
447 base = page_address(page);
448 if (object < base || object >= base + s->objects * s->size ||
449 (object - base) % s->size) {
450 return 0;
451 }
452
453 return 1;
454}
455
456/* 456/*
457 * Object layout: 457 * Object layout:
458 * 458 *