2 * Mutexes: blocking mutual exclusion locks
4 * started by Ingo Molnar:
6 * Copyright (C) 2004, 2005, 2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
8 * This file contains mutex debugging related internal declarations,
9 * prototypes and inline functions, for the CONFIG_DEBUG_MUTEXES case.
10 * More details are in kernel/mutex-debug.c.
14 * This must be called with lock->wait_lock held.
17 debug_mutex_set_owner(struct mutex
*lock
, struct thread_info
*new_owner
);
19 static inline void debug_mutex_clear_owner(struct mutex
*lock
)
24 extern void debug_mutex_lock_common(struct mutex
*lock
,
25 struct mutex_waiter
*waiter
);
26 extern void debug_mutex_wake_waiter(struct mutex
*lock
,
27 struct mutex_waiter
*waiter
);
28 extern void debug_mutex_free_waiter(struct mutex_waiter
*waiter
);
29 extern void debug_mutex_add_waiter(struct mutex
*lock
,
30 struct mutex_waiter
*waiter
,
31 struct thread_info
*ti
);
32 extern void mutex_remove_waiter(struct mutex
*lock
, struct mutex_waiter
*waiter
,
33 struct thread_info
*ti
);
34 extern void debug_mutex_unlock(struct mutex
*lock
);
35 extern void debug_mutex_init(struct mutex
*lock
, const char *name
,
36 struct lock_class_key
*key
);
38 #define spin_lock_mutex(lock, flags) \
40 struct mutex *l = container_of(lock, struct mutex, wait_lock); \
42 DEBUG_LOCKS_WARN_ON(in_interrupt()); \
43 local_irq_save(flags); \
44 __raw_spin_lock(&(lock)->raw_lock); \
45 DEBUG_LOCKS_WARN_ON(l->magic != l); \
48 #define spin_unlock_mutex(lock, flags) \
50 __raw_spin_unlock(&(lock)->raw_lock); \
51 local_irq_restore(flags); \
52 preempt_check_resched(); \
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