LCOV - code coverage report
Current view: top level - include/linux - debug_locks.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1 1 100.0 %
Date: 2017-01-25 Functions: 0 0 -

          Line data    Source code
       1             : #ifndef __LINUX_DEBUG_LOCKING_H
       2             : #define __LINUX_DEBUG_LOCKING_H
       3             : 
       4             : #include <linux/kernel.h>
       5             : #include <asm/atomic.h>
       6             : #include <asm/system.h>
       7             : 
       8             : struct task_struct;
       9             : 
      10             : extern int debug_locks;
      11             : extern int debug_locks_silent;
      12             : 
      13             : 
      14             : static inline int __debug_locks_off(void)
      15             : {
      16             :         return xchg(&debug_locks, 0);
      17             : }
      18             : 
      19             : /*
      20             :  * Generic 'turn off all lock debugging' function:
      21             :  */
      22             : extern int debug_locks_off(void);
      23             : 
      24             : #define DEBUG_LOCKS_WARN_ON(c)                                          \
      25             : ({                                                                      \
      26             :         int __ret = 0;                                                  \
      27             :                                                                         \
      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;                                                          \
      34             : })
      35             : 
      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
      41             : 
      42             : #ifdef CONFIG_DEBUG_LOCKING_API_SELFTESTS
      43             :   extern void locking_selftest(void);
      44             : #else
      45             : # define locking_selftest()     do { } while (0)
      46             : #endif
      47             : 
      48             : struct task_struct;
      49             : 
      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_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 debug_show_held_locks(struct task_struct *task)
      66             : {
      67             : }
      68             : 
      69             : static inline void
      70             : debug_check_no_locks_freed(const void *from, unsigned long len)
      71             : {
      72             : }
      73             : 
      74             : static inline void
      75             : debug_check_no_locks_held(struct task_struct *task)
      76             : {
      77             : }
      78           1 : #endif
      79             : 
      80             : #endif

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