-#if defined (CONFIG_DEBUG_MEMORY) && defined(__KERNEL__)
-
-#define OBD_MT_WRONG_SIZE (1 << 0)
-#define OBD_MT_ALREADY_FREED (1 << 1)
-#define OBD_MT_LOC_LEN 128
-
-struct obd_mem_track {
- struct hlist_node mt_hash;
- char mt_loc[OBD_MT_LOC_LEN];
- int mt_flags;
- void *mt_ptr;
- int mt_size;
-};
-
-void lvfs_memdbg_show(void);
-void lvfs_memdbg_insert(struct obd_mem_track *mt);
-void lvfs_memdbg_remove(struct obd_mem_track *mt);
-struct obd_mem_track *lvfs_memdbg_find(void *ptr);
-
-int lvfs_memdbg_check_insert(struct obd_mem_track *mt);
-struct obd_mem_track *lvfs_memdbg_check_remove(void *ptr);
-
-static inline struct obd_mem_track *
-__new_mem_track(void *ptr, int size,
- char *file, int line)
-{
- struct obd_mem_track *mt;
-
- mt = kmalloc(sizeof(*mt), GFP_KERNEL);
- if (unlikely(!mt))
- return NULL;
-
- snprintf(mt->mt_loc, sizeof(mt->mt_loc) - 1,
- "%s:%d", file, line);
-
- mt->mt_size = size;
- mt->mt_ptr = ptr;
- mt->mt_flags = 0;
- return mt;
-}
-
-static inline void
-__free_mem_track(struct obd_mem_track *mt)
-{
- kfree(mt);
-}
-
-static inline int
-__get_mem_track(void *ptr, int size,
- char *file, int line)
-{
- struct obd_mem_track *mt;
-
- mt = __new_mem_track(ptr, size, file, line);
- if (unlikely(!mt)) {
- CWARN("Can't allocate new memory track\n");
- return 0;
- }
-
- if (!lvfs_memdbg_check_insert(mt))
- __free_mem_track(mt);
-
- return 1;
-}
-
-static inline int
-__put_mem_track(void *ptr, int size,
- char *file, int line)
-{
- struct obd_mem_track *mt;
-
- if (unlikely(!(mt = lvfs_memdbg_check_remove(ptr)))) {
- CWARN("Ptr 0x%p is not allocated. Attempt to free "
- "not allocated memory at %s:%d\n", ptr,
- file, line);
- LBUG();
- return 0;
- } else {
- if (unlikely(mt->mt_size != size)) {
- if (!(mt->mt_flags & OBD_MT_ALREADY_FREED)) {
- mt->mt_flags |= (OBD_MT_WRONG_SIZE |
- OBD_MT_ALREADY_FREED);
-
- CWARN("Freeing memory chunk (at 0x%p) of "
- "different size than allocated "
- "(%d != %d) at %s:%d, allocated at %s\n",
- ptr, mt->mt_size, size, file, line,
- mt->mt_loc);
- }
- } else {
- __free_mem_track(mt);
- }
- return 1;
- }
-}
-
-#define get_mem_track(ptr, size, file, line) \
- __get_mem_track((ptr), (size), (file), (line))
-
-#define put_mem_track(ptr, size, file, line) \
- __put_mem_track((ptr), (size), (file), (line))
-
-#else /* !CONFIG_DEBUG_MEMORY */
-
-#define get_mem_track(ptr, size, file, line) \
- do {} while (0)
-
-#define put_mem_track(ptr, size, file, line) \
- do {} while (0)
-#endif /* !CONFIG_DEBUG_MEMORY */
-