projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 9a11b49a IM |
1 | #ifndef __LINUX_DEBUG_LOCKING_H |
| 2 | #define __LINUX_DEBUG_LOCKING_H | |
| 3 | ||
| ca31e146 | 4 | #include <linux/kernel.h> |
| 60063497 | 5 | #include <linux/atomic.h> |
| 187f1882 | 6 | #include <linux/bug.h> |
| 27b19565 | 7 | #include <asm/system.h> |
| ca31e146 | 8 | |
| 9b7f750d AD |
9 | struct task_struct; |
| 10 | ||
| 9a11b49a IM |
11 | extern int debug_locks; |
| 12 | extern int debug_locks_silent; | |
| 13 | ||
| 9eeba613 FW |
14 | |
| 15 | static inline int __debug_locks_off(void) | |
| 16 | { | |
| 17 | return xchg(&debug_locks, 0); | |
| 18 | } | |
| 19 | ||
| 9a11b49a IM |
20 | /* |
| 21 | * Generic 'turn off all lock debugging' function: | |
| 22 | */ | |
| 23 | extern int debug_locks_off(void); | |
| 24 | ||
| 9a11b49a IM |
25 | #define DEBUG_LOCKS_WARN_ON(c) \ |
| 26 | ({ \ | |
| 27 | int __ret = 0; \ | |
| 28 | \ | |
| 53b9d87f | 29 | if (!oops_in_progress && unlikely(c)) { \ |
| 9127d4b1 | 30 | if (debug_locks_off() && !debug_locks_silent) \ |
| 9a11b49a IM |
31 | WARN_ON(1); \ |
| 32 | __ret = 1; \ | |
| 33 | } \ | |
| 34 | __ret; \ | |
| 35 | }) | |
| 36 | ||
| 37 | #ifdef CONFIG_SMP | |
| 38 | # define SMP_DEBUG_LOCKS_WARN_ON(c) DEBUG_LOCKS_WARN_ON(c) | |
| 39 | #else | |
| 40 | # define SMP_DEBUG_LOCKS_WARN_ON(c) do { } while (0) | |
| 41 | #endif | |
| 42 | ||
| 43 | #ifdef CONFIG_DEBUG_LOCKING_API_SELFTESTS | |
| 44 | extern void locking_selftest(void); | |
| 45 | #else | |
| 46 | # define locking_selftest() do { } while (0) | |
| 47 | #endif | |
| 48 | ||
| f86e4513 KM |
49 | struct task_struct; |
| 50 | ||
| 9a11b49a IM |
51 | #ifdef CONFIG_LOCKDEP |
| 52 | extern void debug_show_all_locks(void); | |
| 53 | extern void debug_show_held_locks(struct task_struct *task); | |
| 54 | extern void debug_check_no_locks_freed(const void *from, unsigned long len); | |
| 55 | extern void debug_check_no_locks_held(struct task_struct *task); | |
| 56 | #else | |
| 57 | static inline void debug_show_all_locks(void) | |
| 58 | { | |
| 59 | } | |
| 60 | ||
| 61 | static inline void debug_show_held_locks(struct task_struct *task) | |
| 62 | { | |
| 63 | } | |
| 64 | ||
| 65 | static inline void | |
| 66 | debug_check_no_locks_freed(const void *from, unsigned long len) | |
| 67 | { | |
| 68 | } | |
| 69 | ||
| 70 | static inline void | |
| 71 | debug_check_no_locks_held(struct task_struct *task) | |
| 72 | { | |
| 73 | } | |
| 74 | #endif | |
| 75 | ||
| 76 | #endif |