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/*

 * Mutexes: blocking mutual exclusion locks

 *

 * started by Ingo Molnar:

 *

 *  Copyright (C) 2004, 2005, 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>

 *

 * This file contains mutex debugging related internal declarations,

 * prototypes and inline functions, for the CONFIG_DEBUG_MUTEXES case.

 * More details are in kernel/mutex-debug.c.

 */

/*

 * This must be called with lock->wait_lock held.

 */

extern void

debug_mutex_set_owner(struct mutex *lock, struct thread_info *new_owner);

static inline void debug_mutex_clear_owner(struct mutex *lock)

{

        lock->owner = NULL;

}

extern void debug_mutex_lock_common(struct mutex *lock,

                                    struct mutex_waiter *waiter);

extern void debug_mutex_wake_waiter(struct mutex *lock,

                                    struct mutex_waiter *waiter);

extern void debug_mutex_free_waiter(struct mutex_waiter *waiter);

extern void debug_mutex_add_waiter(struct mutex *lock,

                                   struct mutex_waiter *waiter,

                                   struct thread_info *ti);

extern void mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter,

                                struct thread_info *ti);

extern void debug_mutex_unlock(struct mutex *lock);

extern void debug_mutex_init(struct mutex *lock, const char *name,

                             struct lock_class_key *key);

#define spin_lock_mutex(lock, flags)                    \

        do {                                            \

                struct mutex *l = container_of(lock, struct mutex, wait_lock); \

                                                        \

                DEBUG_LOCKS_WARN_ON(in_interrupt());    \

                local_irq_save(flags);                  \

                __raw_spin_lock(&(lock)->raw_lock);     \

                DEBUG_LOCKS_WARN_ON(l->magic != l);     \

        } while (0)

#define spin_unlock_mutex(lock, flags)                  \

        do {                                            \

                __raw_spin_unlock(&(lock)->raw_lock);   \

                local_irq_restore(flags);               \

                preempt_check_resched();                \

        } while (0)