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 debug_rt_mutex_init_waiter(struct rt_mutex_waiter *waiter);
  13 extern void debug_rt_mutex_free_waiter(struct rt_mutex_waiter *waiter);
  14 extern void debug_rt_mutex_init(struct rt_mutex *lock, const char *name, struct lock_class_key *key);
  15 extern void debug_rt_mutex_lock(struct rt_mutex *lock);
  16 extern void debug_rt_mutex_unlock(struct rt_mutex *lock);
  17 extern void debug_rt_mutex_proxy_lock(struct rt_mutex *lock,
  18                                       struct task_struct *powner);
  19 extern void debug_rt_mutex_proxy_unlock(struct rt_mutex *lock);
  20 extern void debug_rt_mutex_deadlock(enum rtmutex_chainwalk chwalk,
  21                                     struct rt_mutex_waiter *waiter,
  22                                     struct rt_mutex *lock);
  23 extern void debug_rt_mutex_print_deadlock(struct rt_mutex_waiter *waiter);
  24 # define debug_rt_mutex_reset_waiter(w)                 \
  25         do { (w)->deadlock_lock = NULL; } while (0)
  26
  27 static inline bool debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter *waiter,
  28                                                   enum rtmutex_chainwalk walk)
  29 {
  30         return (waiter != NULL);
  31 }
  32
  33 static inline void rt_mutex_print_deadlock(struct rt_mutex_waiter *w)
  34 {
  35         debug_rt_mutex_print_deadlock(w);
  36 }