Git Repo - linux.git/blame_incremental

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Commit	Line	Data
	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 <[email protected]>
	7	*
	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.
	11	*/
	12
	13	/*
	14	* This must be called with lock->wait_lock held.
	15	*/
	16	extern void
	17	debug_mutex_set_owner(struct mutex lock, struct thread_info new_owner);
	18
	19	static inline void debug_mutex_clear_owner(struct mutex *lock)
	20	{
	21	lock->owner = NULL;
	22	}
	23
	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);
	37
	38	#define spin_lock_mutex(lock, flags) \
	39	do { \
	40	struct mutex *l = container_of(lock, struct mutex, wait_lock); \
	41	\
	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); \
	46	} while (0)
	47
	48	#define spin_unlock_mutex(lock, flags) \
	49	do { \
	50	__raw_spin_unlock(&(lock)->raw_lock); \
	51	local_irq_restore(flags); \
	52	preempt_check_resched(); \
	53	} while (0)