#endif
-#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 */
-
#define OBD_DEBUG_MEMUSAGE (1)
#if OBD_DEBUG_MEMUSAGE
#define OBD_ALLOC_POST(ptr, size, name) \
obd_memory_add(size); \
- get_mem_track((ptr), (size), __FILE__, __LINE__); \
CDEBUG(D_MALLOC, name " '" #ptr "': %d at %p.\n", \
(int)(size), ptr)
#define OBD_FREE_PRE(ptr, size, name) \
LASSERT(ptr); \
- put_mem_track((ptr), (size), __FILE__, __LINE__); \
obd_memory_sub(size); \
CDEBUG(D_MALLOC, name " '" #ptr "': %d at %p.\n", \
(int)(size), ptr); \
}
EXPORT_SYMBOL(l_readdir);
-#if defined (CONFIG_DEBUG_MEMORY) && defined(__KERNEL__)
-static spinlock_t obd_memlist_lock = SPIN_LOCK_UNLOCKED;
-static struct hlist_head *obd_memtable = NULL;
-static unsigned long obd_memtable_size = 0;
-
-static int lvfs_memdbg_init(int size)
-{
- struct hlist_head *head;
- int i;
-
- LASSERT(size > sizeof(sizeof(struct hlist_head)));
- obd_memtable_size = size / sizeof(struct hlist_head);
-
- CWARN("Allocating %lu memdbg entries.\n",
- (unsigned long)obd_memtable_size);
-
- LASSERT(obd_memtable == NULL);
- obd_memtable = kmalloc(size, GFP_KERNEL);
- if (!obd_memtable)
- return -ENOMEM;
-
- i = obd_memtable_size;
- head = obd_memtable;
- do {
- INIT_HLIST_HEAD(head);
- head++;
- i--;
- } while(i);
-
- return 0;
-}
-
-static int lvfs_memdbg_cleanup(void)
-{
- struct hlist_node *node = NULL, *tmp = NULL;
- struct hlist_head *head;
- struct obd_mem_track *mt;
- int i;
-
- spin_lock(&obd_memlist_lock);
- for (i = 0, head = obd_memtable; i < obd_memtable_size; i++, head++) {
- hlist_for_each_safe(node, tmp, head) {
- mt = hlist_entry(node, struct obd_mem_track, mt_hash);
- hlist_del_init(&mt->mt_hash);
- kfree(mt);
- }
- }
- spin_unlock(&obd_memlist_lock);
- kfree(obd_memtable);
- return 0;
-}
-
-static inline unsigned long const hashfn(void *ptr)
-{
- return (unsigned long)ptr &
- (obd_memtable_size - 1);
-}
-
-static void __lvfs_memdbg_insert(struct obd_mem_track *mt)
-{
- struct hlist_head *head = obd_memtable +
- hashfn(mt->mt_ptr);
- hlist_add_head(&mt->mt_hash, head);
-}
-
-void lvfs_memdbg_insert(struct obd_mem_track *mt)
-{
- spin_lock(&obd_memlist_lock);
- __lvfs_memdbg_insert(mt);
- spin_unlock(&obd_memlist_lock);
-}
-EXPORT_SYMBOL(lvfs_memdbg_insert);
-
-static void __lvfs_memdbg_remove(struct obd_mem_track *mt)
-{
- hlist_del_init(&mt->mt_hash);
-}
-
-void lvfs_memdbg_remove(struct obd_mem_track *mt)
-{
- spin_lock(&obd_memlist_lock);
- __lvfs_memdbg_remove(mt);
- spin_unlock(&obd_memlist_lock);
-}
-EXPORT_SYMBOL(lvfs_memdbg_remove);
-
-static struct obd_mem_track *__lvfs_memdbg_find(void *ptr)
-{
- struct hlist_node *node = NULL;
- struct obd_mem_track *mt = NULL;
- struct hlist_head *head;
-
- head = obd_memtable + hashfn(ptr);
-
- hlist_for_each(node, head) {
- mt = hlist_entry(node, struct obd_mem_track, mt_hash);
- if ((unsigned long)mt->mt_ptr == (unsigned long)ptr)
- break;
- mt = NULL;
- }
- return mt;
-}
-
-struct obd_mem_track *lvfs_memdbg_find(void *ptr)
-{
- struct obd_mem_track *mt;
-
- spin_lock(&obd_memlist_lock);
- mt = __lvfs_memdbg_find(ptr);
- spin_unlock(&obd_memlist_lock);
-
- return mt;
-}
-EXPORT_SYMBOL(lvfs_memdbg_find);
-
-int lvfs_memdbg_check_insert(struct obd_mem_track *mt)
-{
- struct obd_mem_track *tmp;
-
- spin_lock(&obd_memlist_lock);
- tmp = __lvfs_memdbg_find(mt->mt_ptr);
- if (tmp == NULL) {
- __lvfs_memdbg_insert(mt);
- spin_unlock(&obd_memlist_lock);
- return 1;
- }
- spin_unlock(&obd_memlist_lock);
- return 0;
-}
-EXPORT_SYMBOL(lvfs_memdbg_check_insert);
-
-struct obd_mem_track *
-lvfs_memdbg_check_remove(void *ptr)
-{
- struct obd_mem_track *mt;
-
- spin_lock(&obd_memlist_lock);
- mt = __lvfs_memdbg_find(ptr);
- if (mt) {
- __lvfs_memdbg_remove(mt);
- spin_unlock(&obd_memlist_lock);
- return mt;
- }
- spin_unlock(&obd_memlist_lock);
- return NULL;
-}
-EXPORT_SYMBOL(lvfs_memdbg_check_remove);
-#endif
-
-void lvfs_memdbg_show(void)
-{
-#if defined (CONFIG_DEBUG_MEMORY) && defined(__KERNEL__)
- struct hlist_node *node = NULL;
- struct hlist_head *head;
- struct obd_mem_track *mt;
- int header = 0;
-#endif
-
-#if defined (CONFIG_DEBUG_MEMORY) && defined(__KERNEL__)
- int i;
-#endif
-
-
-#if defined (CONFIG_DEBUG_MEMORY) && defined(__KERNEL__)
- spin_lock(&obd_memlist_lock);
- for (i = 0, head = obd_memtable; i < obd_memtable_size; i++, head++) {
- hlist_for_each(node, head) {
- if (header == 0) {
- CWARN("Abnormal memory activities:\n");
- header = 1;
- }
- mt = hlist_entry(node, struct obd_mem_track, mt_hash);
- CWARN(" [%s] ptr: 0x%p, size: %d, src at %s\n",
- ((mt->mt_flags & OBD_MT_WRONG_SIZE) ?
- "wrong size" : "leaked memory"),
- mt->mt_ptr, mt->mt_size, mt->mt_loc);
- }
- }
- spin_unlock(&obd_memlist_lock);
-#endif
-}
-EXPORT_SYMBOL(lvfs_memdbg_show);
-
#ifdef LUSTRE_KERNEL_VERSION
#ifndef HAVE_CLEAR_RDONLY_ON_PUT
#error rdonly patchset must be updated [cfs bz11248]
EXPORT_SYMBOL(lprocfs_read_helper);
#endif /* LPROCFS */
-static int __init lvfs_linux_init(void)
-{
- ENTRY;
-#if defined (CONFIG_DEBUG_MEMORY) && defined(__KERNEL__)
- lvfs_memdbg_init(CFS_PAGE_SIZE);
-#endif
- RETURN(0);
-}
-
-static void __exit lvfs_linux_exit(void)
-{
- ENTRY;
-
- lvfs_memdbg_show();
-
-#if defined (CONFIG_DEBUG_MEMORY) && defined(__KERNEL__)
- lvfs_memdbg_cleanup();
-#endif
- EXIT;
-}
-
MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
MODULE_DESCRIPTION("Lustre VFS Filesystem Helper v0.1");
MODULE_LICENSE("GPL");
-
-module_init(lvfs_linux_init);
-module_exit(lvfs_linux_exit);
git://git.whamcloud.com / fs / lustre-release.git / commitdiff