LXR linux/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
  26static inline void rt_mutex_print_deadlock(struct rt_mutex_waiter *w)
  27{
  28        WARN(1, "rtmutex deadlock detected\n");
  29}
  30
  31static 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