1
2 #ifndef _LIBLOCKDEP_COMMON_H
3 #define _LIBLOCKDEP_COMMON_H
4
5 #include <pthread.h>
6
7 #define NR_LOCKDEP_CACHING_CLASSES 2
8 #define MAX_LOCKDEP_SUBCLASSES 8UL
9
10 #ifndef CALLER_ADDR0
11 #define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0))
12 #endif
13
14 #ifndef _RET_IP_
15 #define _RET_IP_ CALLER_ADDR0
16 #endif
17
18 #ifndef _THIS_IP_
19 #define _THIS_IP_ ({ __label__ __here; __here: (unsigned long)&&__here; })
20 #endif
21
22 struct lockdep_subclass_key {
23 char __one_byte;
24 };
25
26 struct lock_class_key {
27 struct lockdep_subclass_key subkeys[MAX_LOCKDEP_SUBCLASSES];
28 };
29
30 struct lockdep_map {
31 struct lock_class_key *key;
32 struct lock_class *class_cache[NR_LOCKDEP_CACHING_CLASSES];
33 const char *name;
34 #ifdef CONFIG_LOCK_STAT
35 int cpu;
36 unsigned long ip;
37 #endif
38 };
39
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,
46 unsigned long ip);
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);
51
52 #define STATIC_LOCKDEP_MAP_INIT(_name, _key) \
53 { .name = (_name), .key = (void *)(_key), }
54
55 #endif