kernel/locking/rtmutex.h

   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 }