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1 | #ifndef __LINUX_DEBUG_LOCKING_H |
2 | #define __LINUX_DEBUG_LOCKING_H | |
3 | ||
4 | extern int debug_locks; | |
5 | extern int debug_locks_silent; | |
6 | ||
7 | /* | |
8 | * Generic 'turn off all lock debugging' function: | |
9 | */ | |
10 | extern int debug_locks_off(void); | |
11 | ||
12 | /* | |
13 | * In the debug case we carry the caller's instruction pointer into | |
14 | * other functions, but we dont want the function argument overhead | |
15 | * in the nondebug case - hence these macros: | |
16 | */ | |
17 | #define _RET_IP_ (unsigned long)__builtin_return_address(0) | |
18 | #define _THIS_IP_ ({ __label__ __here; __here: (unsigned long)&&__here; }) | |
19 | ||
20 | #define DEBUG_LOCKS_WARN_ON(c) \ | |
21 | ({ \ | |
22 | int __ret = 0; \ | |
23 | \ | |
24 | if (unlikely(c)) { \ | |
25 | if (debug_locks_off()) \ | |
26 | WARN_ON(1); \ | |
27 | __ret = 1; \ | |
28 | } \ | |
29 | __ret; \ | |
30 | }) | |
31 | ||
32 | #ifdef CONFIG_SMP | |
33 | # define SMP_DEBUG_LOCKS_WARN_ON(c) DEBUG_LOCKS_WARN_ON(c) | |
34 | #else | |
35 | # define SMP_DEBUG_LOCKS_WARN_ON(c) do { } while (0) | |
36 | #endif | |
37 | ||
38 | #ifdef CONFIG_DEBUG_LOCKING_API_SELFTESTS | |
39 | extern void locking_selftest(void); | |
40 | #else | |
41 | # define locking_selftest() do { } while (0) | |
42 | #endif | |
43 | ||
44 | #ifdef CONFIG_LOCKDEP | |
45 | extern void debug_show_all_locks(void); | |
46 | extern void debug_show_held_locks(struct task_struct *task); | |
47 | extern void debug_check_no_locks_freed(const void *from, unsigned long len); | |
48 | extern void debug_check_no_locks_held(struct task_struct *task); | |
49 | #else | |
50 | static inline void debug_show_all_locks(void) | |
51 | { | |
52 | } | |
53 | ||
54 | static inline void debug_show_held_locks(struct task_struct *task) | |
55 | { | |
56 | } | |
57 | ||
58 | static inline void | |
59 | debug_check_no_locks_freed(const void *from, unsigned long len) | |
60 | { | |
61 | } | |
62 | ||
63 | static inline void | |
64 | debug_check_no_locks_held(struct task_struct *task) | |
65 | { | |
66 | } | |
67 | #endif | |
68 | ||
69 | #endif |