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TOMOYO Linux Cross Reference
Linux/kernel/mutex.h

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  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 #ifdef CONFIG_SMP
 20 static inline void mutex_set_owner(struct mutex *lock)
 21 {
 22         lock->owner = current;
 23 }
 24 
 25 static inline void mutex_clear_owner(struct mutex *lock)
 26 {
 27         lock->owner = NULL;
 28 }
 29 #else
 30 static inline void mutex_set_owner(struct mutex *lock)
 31 {
 32 }
 33 
 34 static inline void mutex_clear_owner(struct mutex *lock)
 35 {
 36 }
 37 #endif
 38 
 39 #define debug_mutex_wake_waiter(lock, waiter)           do { } while (0)
 40 #define debug_mutex_free_waiter(waiter)                 do { } while (0)
 41 #define debug_mutex_add_waiter(lock, waiter, ti)        do { } while (0)
 42 #define debug_mutex_unlock(lock)                        do { } while (0)
 43 #define debug_mutex_init(lock, name, key)               do { } while (0)
 44 
 45 static inline void
 46 debug_mutex_lock_common(struct mutex *lock, struct mutex_waiter *waiter)
 47 {
 48 }
 49 

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