* - task may not exit with mutex held
* - memory areas where held locks reside must not be freed
* - held mutexes must not be reinitialized
- * - mutexes may not be used in irq contexts
+ * - mutexes may not be used in hardware or software interrupt
+ * contexts such as tasklets and timers
*
* These semantics are fully enforced when DEBUG_MUTEXES is
* enabled. Furthermore, besides enforcing the above rules, the mutex
*
* Returns 1 if the mutex is locked, 0 if unlocked.
*/
-static inline int fastcall mutex_is_locked(struct mutex *lock)
+static inline int mutex_is_locked(struct mutex *lock)
{
return atomic_read(&lock->count) != 1;
}
* See kernel/mutex.c for detailed documentation of these APIs.
* Also see Documentation/mutex-design.txt.
*/
-extern void fastcall mutex_lock(struct mutex *lock);
-extern int __must_check fastcall mutex_lock_interruptible(struct mutex *lock);
-
#ifdef CONFIG_DEBUG_LOCK_ALLOC
extern void mutex_lock_nested(struct mutex *lock, unsigned int subclass);
extern int __must_check mutex_lock_interruptible_nested(struct mutex *lock,
unsigned int subclass);
+extern int __must_check mutex_lock_killable_nested(struct mutex *lock,
+ unsigned int subclass);
+
+#define mutex_lock(lock) mutex_lock_nested(lock, 0)
+#define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0)
+#define mutex_lock_killable(lock) mutex_lock_killable_nested(lock, 0)
#else
+extern void mutex_lock(struct mutex *lock);
+extern int __must_check mutex_lock_interruptible(struct mutex *lock);
+extern int __must_check mutex_lock_killable(struct mutex *lock);
+
# define mutex_lock_nested(lock, subclass) mutex_lock(lock)
# define mutex_lock_interruptible_nested(lock, subclass) mutex_lock_interruptible(lock)
+# define mutex_lock_killable_nested(lock, subclass) mutex_lock_killable(lock)
#endif
/*
* NOTE: mutex_trylock() follows the spin_trylock() convention,
* not the down_trylock() convention!
*/
-extern int fastcall mutex_trylock(struct mutex *lock);
-extern void fastcall mutex_unlock(struct mutex *lock);
+extern int mutex_trylock(struct mutex *lock);
+extern void mutex_unlock(struct mutex *lock);
#endif