]>
Commit | Line | Data |
---|---|---|
9a11b49a IM |
1 | #ifndef __LINUX_DEBUG_LOCKING_H |
2 | #define __LINUX_DEBUG_LOCKING_H | |
3 | ||
9b7f750d AD |
4 | struct task_struct; |
5 | ||
9a11b49a IM |
6 | extern int debug_locks; |
7 | extern int debug_locks_silent; | |
8 | ||
9 | /* | |
10 | * Generic 'turn off all lock debugging' function: | |
11 | */ | |
12 | extern int debug_locks_off(void); | |
13 | ||
14 | /* | |
15 | * In the debug case we carry the caller's instruction pointer into | |
16 | * other functions, but we dont want the function argument overhead | |
17 | * in the nondebug case - hence these macros: | |
18 | */ | |
19 | #define _RET_IP_ (unsigned long)__builtin_return_address(0) | |
20 | #define _THIS_IP_ ({ __label__ __here; __here: (unsigned long)&&__here; }) | |
21 | ||
22 | #define DEBUG_LOCKS_WARN_ON(c) \ | |
23 | ({ \ | |
24 | int __ret = 0; \ | |
25 | \ | |
26 | if (unlikely(c)) { \ | |
9127d4b1 | 27 | if (debug_locks_off() && !debug_locks_silent) \ |
9a11b49a IM |
28 | WARN_ON(1); \ |
29 | __ret = 1; \ | |
30 | } \ | |
31 | __ret; \ | |
32 | }) | |
33 | ||
34 | #ifdef CONFIG_SMP | |
35 | # define SMP_DEBUG_LOCKS_WARN_ON(c) DEBUG_LOCKS_WARN_ON(c) | |
36 | #else | |
37 | # define SMP_DEBUG_LOCKS_WARN_ON(c) do { } while (0) | |
38 | #endif | |
39 | ||
40 | #ifdef CONFIG_DEBUG_LOCKING_API_SELFTESTS | |
41 | extern void locking_selftest(void); | |
42 | #else | |
43 | # define locking_selftest() do { } while (0) | |
44 | #endif | |
45 | ||
f86e4513 KM |
46 | struct task_struct; |
47 | ||
9a11b49a IM |
48 | #ifdef CONFIG_LOCKDEP |
49 | extern void debug_show_all_locks(void); | |
82a1fcb9 | 50 | extern void __debug_show_held_locks(struct task_struct *task); |
9a11b49a IM |
51 | extern void debug_show_held_locks(struct task_struct *task); |
52 | extern void debug_check_no_locks_freed(const void *from, unsigned long len); | |
53 | extern void debug_check_no_locks_held(struct task_struct *task); | |
54 | #else | |
55 | static inline void debug_show_all_locks(void) | |
56 | { | |
57 | } | |
58 | ||
82a1fcb9 IM |
59 | static inline void __debug_show_held_locks(struct task_struct *task) |
60 | { | |
61 | } | |
62 | ||
9a11b49a IM |
63 | static inline void debug_show_held_locks(struct task_struct *task) |
64 | { | |
65 | } | |
66 | ||
67 | static inline void | |
68 | debug_check_no_locks_freed(const void *from, unsigned long len) | |
69 | { | |
70 | } | |
71 | ||
72 | static inline void | |
73 | debug_check_no_locks_held(struct task_struct *task) | |
74 | { | |
75 | } | |
76 | #endif | |
77 | ||
78 | #endif |