kernel/locking/rtmutex-debug.h

   1 /*
   2  * RT-Mutexes: blocking mutual exclusion locks with PI support
   3  *
   4  * started by Ingo Molnar and Thomas Gleixner:
   5  *
   6  *  Copyright (C) 2004-2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
   7  *  Copyright (C) 2006, Timesys Corp., Thomas Gleixner <tglx@timesys.com>
   8  *
   9  * This file contains macros used solely by rtmutex.c. Debug version.
  10  */
  11
  12 extern void
  13 rt_mutex_deadlock_account_lock(struct rt_mutex *lock, struct task_struct *task);
  14 extern void rt_mutex_deadlock_account_unlock(struct task_struct *task);
  15 extern void debug_rt_mutex_init_waiter(struct rt_mutex_waiter *waiter);
  16 extern void debug_rt_mutex_free_waiter(struct rt_mutex_waiter *waiter);
  17 extern void debug_rt_mutex_init(struct rt_mutex *lock, const char *name);
  18 extern void debug_rt_mutex_lock(struct rt_mutex *lock);
  19 extern void debug_rt_mutex_unlock(struct rt_mutex *lock);
  20 extern void debug_rt_mutex_proxy_lock(struct rt_mutex *lock,
  21                                       struct task_struct *powner);
  22 extern void debug_rt_mutex_proxy_unlock(struct rt_mutex *lock);
  23 extern void debug_rt_mutex_deadlock(int detect, struct rt_mutex_waiter *waiter,
  24                                     struct rt_mutex *lock);
  25 extern void debug_rt_mutex_print_deadlock(struct rt_mutex_waiter *waiter);
  26 # define debug_rt_mutex_reset_waiter(w)                 \
  27         do { (w)->deadlock_lock = NULL; } while (0)
  28
  29 static inline int debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter *waiter,
  30                                                  int detect)
  31 {
  32         return (waiter != NULL);
  33 }
  34
  35 static inline void rt_mutex_print_deadlock(struct rt_mutex_waiter *w)
  36 {
  37         debug_rt_mutex_print_deadlock(w);
  38 }