The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/kernel/rtmutex-debug.h

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    1 /*
    2  * RT-Mutexes: blocking mutual exclusion locks with PI support
    3  *
    4  * started by Ingo Molnar and Thomas Gleixner:
    5  *
    6  *  Copyright (C) 2004-2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
    7  *  Copyright (C) 2006, Timesys Corp., Thomas Gleixner <tglx@timesys.com>
    8  *
    9  * This file contains macros used solely by rtmutex.c. Debug version.
   10  */
   11 
   12 extern void
   13 rt_mutex_deadlock_account_lock(struct rt_mutex *lock, struct task_struct *task);
   14 extern void rt_mutex_deadlock_account_unlock(struct task_struct *task);
   15 extern void debug_rt_mutex_init_waiter(struct rt_mutex_waiter *waiter);
   16 extern void debug_rt_mutex_free_waiter(struct rt_mutex_waiter *waiter);
   17 extern void debug_rt_mutex_init(struct rt_mutex *lock, const char *name);
   18 extern void debug_rt_mutex_lock(struct rt_mutex *lock);
   19 extern void debug_rt_mutex_unlock(struct rt_mutex *lock);
   20 extern void debug_rt_mutex_proxy_lock(struct rt_mutex *lock,
   21                                       struct task_struct *powner);
   22 extern void debug_rt_mutex_proxy_unlock(struct rt_mutex *lock);
   23 extern void debug_rt_mutex_deadlock(int detect, struct rt_mutex_waiter *waiter,
   24                                     struct rt_mutex *lock);
   25 extern void debug_rt_mutex_print_deadlock(struct rt_mutex_waiter *waiter);
   26 # define debug_rt_mutex_reset_waiter(w)                 \
   27         do { (w)->deadlock_lock = NULL; } while (0)
   28 
   29 static inline int debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter *waiter,
   30                                                  int detect)
   31 {
   32         return (waiter != NULL);
   33 }

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