kernel/mutex.h

   1 /*
   2  * Mutexes: blocking mutual exclusion locks
   3  *
   4  * started by Ingo Molnar:
   5  *
   6  *  Copyright (C) 2004, 2005, 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
   7  *
   8  * This file contains mutex debugging related internal prototypes, for the
   9  * !CONFIG_DEBUG_MUTEXES case. Most of them are NOPs:
  10  */
  11
  12 #define spin_lock_mutex(lock, flags) \
  13                 do { spin_lock(lock); (void)(flags); } while (0)
  14 #define spin_unlock_mutex(lock, flags) \
  15                 do { spin_unlock(lock); (void)(flags); } while (0)
  16 #define mutex_remove_waiter(lock, waiter, ti) \
  17                 __list_del((waiter)->list.prev, (waiter)->list.next)
  18
  19 #define DEBUG_WARN_ON(c)                                do { } while (0)
  20 #define debug_mutex_set_owner(lock, new_owner)          do { } while (0)
  21 #define debug_mutex_clear_owner(lock)                   do { } while (0)
  22 #define debug_mutex_init_waiter(waiter)                 do { } while (0)
  23 #define debug_mutex_wake_waiter(lock, waiter)           do { } while (0)
  24 #define debug_mutex_free_waiter(waiter)                 do { } while (0)
  25 #define debug_mutex_add_waiter(lock, waiter, ti, ip)    do { } while (0)
  26 #define debug_mutex_unlock(lock)                        do { } while (0)
  27 #define debug_mutex_init(lock, name)                    do { } while (0)
  28
  29 /*
  30  * Return-address parameters/declarations. They are very useful for
  31  * debugging, but add overhead in the !DEBUG case - so we go the
  32  * trouble of using this not too elegant but zero-cost solution:
  33  */
  34 #define __IP_DECL__
  35 #define __IP__
  36 #define __RET_IP__
  37