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Ingo Molnar9a11b49a2006-07-03 00:24:33 -07001#ifndef __LINUX_DEBUG_LOCKING_H
2#define __LINUX_DEBUG_LOCKING_H
3
Eduard - Gabriel Munteanuca31e142008-07-05 12:14:23 +03004#include <linux/kernel.h>
5
Alexey Dobriyan9b7f7502006-08-05 12:14:27 -07006struct task_struct;
7
Ingo Molnar9a11b49a2006-07-03 00:24:33 -07008extern int debug_locks;
9extern int debug_locks_silent;
10
11/*
12 * Generic 'turn off all lock debugging' function:
13 */
14extern int debug_locks_off(void);
15
Ingo Molnar9a11b49a2006-07-03 00:24:33 -070016#define DEBUG_LOCKS_WARN_ON(c) \
17({ \
18 int __ret = 0; \
19 \
Andrew Morton53b9d872008-09-11 17:02:58 -070020 if (!oops_in_progress && unlikely(c)) { \
Ingo Molnar9127d4b2006-12-22 01:08:52 -080021 if (debug_locks_off() && !debug_locks_silent) \
Ingo Molnar9a11b49a2006-07-03 00:24:33 -070022 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
Kyle McMartinf86e4512006-08-13 21:09:31 -040040struct task_struct;
41
Ingo Molnar9a11b49a2006-07-03 00:24:33 -070042#ifdef CONFIG_LOCKDEP
43extern void debug_show_all_locks(void);
Ingo Molnar82a1fcb2008-01-25 21:08:02 +010044extern void __debug_show_held_locks(struct task_struct *task);
Ingo Molnar9a11b49a2006-07-03 00:24:33 -070045extern void debug_show_held_locks(struct task_struct *task);
46extern void debug_check_no_locks_freed(const void *from, unsigned long len);
47extern void debug_check_no_locks_held(struct task_struct *task);
48#else
49static inline void debug_show_all_locks(void)
50{
51}
52
Ingo Molnar82a1fcb2008-01-25 21:08:02 +010053static inline void __debug_show_held_locks(struct task_struct *task)
54{
55}
56
Ingo Molnar9a11b49a2006-07-03 00:24:33 -070057static inline void debug_show_held_locks(struct task_struct *task)
58{
59}
60
61static inline void
62debug_check_no_locks_freed(const void *from, unsigned long len)
63{
64}
65
66static inline void
67debug_check_no_locks_held(struct task_struct *task)
68{
69}
70#endif
71
72#endif