Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
[linux-2.6.git] / include / linux / debug_locks.h
1 #ifndef __LINUX_DEBUG_LOCKING_H
2 #define __LINUX_DEBUG_LOCKING_H
3
4 #include <linux/kernel.h>
5
6 struct task_struct;
7
8 extern int debug_locks;
9 extern int debug_locks_silent;
10
11 /*
12  * Generic 'turn off all lock debugging' function:
13  */
14 extern int debug_locks_off(void);
15
16 #define DEBUG_LOCKS_WARN_ON(c)                                          \
17 ({                                                                      \
18         int __ret = 0;                                                  \
19                                                                         \
20         if (unlikely(c)) {                                              \
21                 if (debug_locks_off() && !debug_locks_silent)           \
22                         WARN_ON(1);                                     \
23                 __ret = 1;                                              \
24         }                                                               \
25         __ret;                                                          \
26 })
27
28 #ifdef CONFIG_SMP
29 # define SMP_DEBUG_LOCKS_WARN_ON(c)                     DEBUG_LOCKS_WARN_ON(c)
30 #else
31 # define SMP_DEBUG_LOCKS_WARN_ON(c)                     do { } while (0)
32 #endif
33
34 #ifdef CONFIG_DEBUG_LOCKING_API_SELFTESTS
35   extern void locking_selftest(void);
36 #else
37 # define locking_selftest()     do { } while (0)
38 #endif
39
40 struct task_struct;
41
42 #ifdef CONFIG_LOCKDEP
43 extern void debug_show_all_locks(void);
44 extern void __debug_show_held_locks(struct task_struct *task);
45 extern void debug_show_held_locks(struct task_struct *task);
46 extern void debug_check_no_locks_freed(const void *from, unsigned long len);
47 extern void debug_check_no_locks_held(struct task_struct *task);
48 #else
49 static inline void debug_show_all_locks(void)
50 {
51 }
52
53 static inline void __debug_show_held_locks(struct task_struct *task)
54 {
55 }
56
57 static inline void debug_show_held_locks(struct task_struct *task)
58 {
59 }
60
61 static inline void
62 debug_check_no_locks_freed(const void *from, unsigned long len)
63 {
64 }
65
66 static inline void
67 debug_check_no_locks_held(struct task_struct *task)
68 {
69 }
70 #endif
71
72 #endif