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 * - detects multi-task circular deadlocks and prints out all affected
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 * - detects multi-task circular deadlocks and prints out all affected
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 *   locks and tasks (and only those tasks)
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 *   locks and tasks (and only those tasks)
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 */
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 */
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struct mutex {
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struct mutex {
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	/* 1: unlocked, 0: locked, negative: locked, possible waiters */
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	/* 1: unlocked, 0: locked, negative: locked, possible waiters */
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	atomic_t		count;
 - 
 
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	struct list_head	wait_list;
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	struct list_head	wait_list;
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    atomic_t            count;
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};
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};
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/*
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/*
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 * This is the control structure for tasks blocked on mutex,
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 * This is the control structure for tasks blocked on mutex,
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    int                *task;
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    int                *task;
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};
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};
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- 
 
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#define __MUTEX_INITIALIZER(lockname) \
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#define __MUTEX_INITIALIZER(lockname) \
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                { .wait_list = LIST_HEAD_INIT(lockname.wait_list), \
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                { .count = ATOMIC_INIT(1) \
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                  .count = ATOMIC_INIT(1) \
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                , .wait_list = LIST_HEAD_INIT(lockname.wait_list) }
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                }
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