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Linux/kernel/locking/rtmutex-debug.h

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  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 /*
  3  * RT-Mutexes: blocking mutual exclusion locks with PI support
  4  *
  5  * started by Ingo Molnar and Thomas Gleixner:
  6  *
  7  *  Copyright (C) 2004-2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
  8  *  Copyright (C) 2006, Timesys Corp., Thomas Gleixner <tglx@timesys.com>
  9  *
 10  * This file contains macros used solely by rtmutex.c. Debug version.
 11  */
 12 
 13 extern void debug_rt_mutex_init_waiter(struct rt_mutex_waiter *waiter);
 14 extern void debug_rt_mutex_free_waiter(struct rt_mutex_waiter *waiter);
 15 extern void debug_rt_mutex_init(struct rt_mutex *lock, const char *name, struct lock_class_key *key);
 16 extern void debug_rt_mutex_lock(struct rt_mutex *lock);
 17 extern void debug_rt_mutex_unlock(struct rt_mutex *lock);
 18 extern void debug_rt_mutex_proxy_lock(struct rt_mutex *lock,
 19                                       struct task_struct *powner);
 20 extern void debug_rt_mutex_proxy_unlock(struct rt_mutex *lock);
 21 extern void debug_rt_mutex_deadlock(enum rtmutex_chainwalk chwalk,
 22                                     struct rt_mutex_waiter *waiter,
 23                                     struct rt_mutex *lock);
 24 extern void debug_rt_mutex_print_deadlock(struct rt_mutex_waiter *waiter);
 25 # define debug_rt_mutex_reset_waiter(w)                 \
 26         do { (w)->deadlock_lock = NULL; } while (0)
 27 
 28 static inline bool debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter *waiter,
 29                                                   enum rtmutex_chainwalk walk)
 30 {
 31         return (waiter != NULL);
 32 }
 33 
 34 static inline void rt_mutex_print_deadlock(struct rt_mutex_waiter *w)
 35 {
 36         debug_rt_mutex_print_deadlock(w);
 37 }
 38 

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