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, task) \ 17 __list_del((waiter)->list.prev, (waiter)->list.next) 18 19 #ifdef CONFIG_MUTEX_SPIN_ON_OWNER 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