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Linux/kernel/locking/rtmutex.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.
 11  * Non-debug version.
 12  */
 13 
 14 #define rt_mutex_deadlock_check(l)                      (0)
 15 #define debug_rt_mutex_init_waiter(w)                   do { } while (0)
 16 #define debug_rt_mutex_free_waiter(w)                   do { } while (0)
 17 #define debug_rt_mutex_lock(l)                          do { } while (0)
 18 #define debug_rt_mutex_proxy_lock(l,p)                  do { } while (0)
 19 #define debug_rt_mutex_proxy_unlock(l)                  do { } while (0)
 20 #define debug_rt_mutex_unlock(l)                        do { } while (0)
 21 #define debug_rt_mutex_init(m, n, k)                    do { } while (0)
 22 #define debug_rt_mutex_deadlock(d, a ,l)                do { } while (0)
 23 #define debug_rt_mutex_print_deadlock(w)                do { } while (0)
 24 #define debug_rt_mutex_reset_waiter(w)                  do { } while (0)
 25 
 26 static inline void rt_mutex_print_deadlock(struct rt_mutex_waiter *w)
 27 {
 28         WARN(1, "rtmutex deadlock detected\n");
 29 }
 30 
 31 static inline bool debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter *w,
 32                                                   enum rtmutex_chainwalk walk)
 33 {
 34         return walk == RT_MUTEX_FULL_CHAINWALK;
 35 }
 36 

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