1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LIBLOCKDEP_COMMON_H
3 #define _LIBLOCKDEP_COMMON_H
7 #define NR_LOCKDEP_CACHING_CLASSES 2
8 #define MAX_LOCKDEP_SUBCLASSES 8UL
11 #define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0))
15 #define _RET_IP_ CALLER_ADDR0
19 #define _THIS_IP_ ({ __label__ __here; __here: (unsigned long)&&__here; })
22 struct lockdep_subclass_key {
26 struct lock_class_key {
27 struct lockdep_subclass_key subkeys[MAX_LOCKDEP_SUBCLASSES];
31 struct lock_class_key *key;
32 struct lock_class *class_cache[NR_LOCKDEP_CACHING_CLASSES];
34 #ifdef CONFIG_LOCK_STAT
40 void lockdep_init_map(struct lockdep_map *lock, const char *name,
41 struct lock_class_key *key, int subclass);
42 void lock_acquire(struct lockdep_map *lock, unsigned int subclass,
43 int trylock, int read, int check,
44 struct lockdep_map *nest_lock, unsigned long ip);
45 void lock_release(struct lockdep_map *lock, int nested,
47 void lockdep_reset_lock(struct lockdep_map *lock);
48 void lockdep_register_key(struct lock_class_key *key);
49 void lockdep_unregister_key(struct lock_class_key *key);
50 extern void debug_check_no_locks_freed(const void *from, unsigned long len);
52 #define STATIC_LOCKDEP_MAP_INIT(_name, _key) \
53 { .name = (_name), .key = (void *)(_key), }