OMAPDSS: VENC: fix NULL pointer dereference in DSS2 VENC sysfs debug attr on OMAP4
[zen-stable.git] / include / linux / debug_locks.h
blob5033fb88c107f6ec5189cea9b642a3d00eb1e93a
1 #ifndef __LINUX_DEBUG_LOCKING_H
2 #define __LINUX_DEBUG_LOCKING_H
4 #include <linux/kernel.h>
5 #include <linux/atomic.h>
6 #include <asm/system.h>
8 struct task_struct;
10 extern int debug_locks;
11 extern int debug_locks_silent;
14 static inline int __debug_locks_off(void)
16 return xchg(&debug_locks, 0);
20 * Generic 'turn off all lock debugging' function:
22 extern int debug_locks_off(void);
24 #define DEBUG_LOCKS_WARN_ON(c) \
25 ({ \
26 int __ret = 0; \
28 if (!oops_in_progress && unlikely(c)) { \
29 if (debug_locks_off() && !debug_locks_silent) \
30 WARN_ON(1); \
31 __ret = 1; \
32 } \
33 __ret; \
36 #ifdef CONFIG_SMP
37 # define SMP_DEBUG_LOCKS_WARN_ON(c) DEBUG_LOCKS_WARN_ON(c)
38 #else
39 # define SMP_DEBUG_LOCKS_WARN_ON(c) do { } while (0)
40 #endif
42 #ifdef CONFIG_DEBUG_LOCKING_API_SELFTESTS
43 extern void locking_selftest(void);
44 #else
45 # define locking_selftest() do { } while (0)
46 #endif
48 struct task_struct;
50 #ifdef CONFIG_LOCKDEP
51 extern void debug_show_all_locks(void);
52 extern void debug_show_held_locks(struct task_struct *task);
53 extern void debug_check_no_locks_freed(const void *from, unsigned long len);
54 extern void debug_check_no_locks_held(struct task_struct *task);
55 #else
56 static inline void debug_show_all_locks(void)
60 static inline void debug_show_held_locks(struct task_struct *task)
64 static inline void
65 debug_check_no_locks_freed(const void *from, unsigned long len)
69 static inline void
70 debug_check_no_locks_held(struct task_struct *task)
73 #endif
75 #endif