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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
45e62074 SL |
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); | |
2b62c2db | 47 | extern void debug_check_no_locks_freed(const void *from, unsigned long len); |
45e62074 SL |
48 | |
49 | #define STATIC_LOCKDEP_MAP_INIT(_name, _key) \ | |
50 | { .name = (_name), .key = (void *)(_key), } | |
51 | ||
52 | #endif |