LXR linux/kernel/locking/rtmutex-debug.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. Debug version.
  11 */
  12
  13extern void debug_rt_mutex_init_waiter(struct rt_mutex_waiter *waiter);
  14extern void debug_rt_mutex_free_waiter(struct rt_mutex_waiter *waiter);
  15extern void debug_rt_mutex_init(struct rt_mutex *lock, const char *name, struct lock_class_key *key);
  16extern void debug_rt_mutex_lock(struct rt_mutex *lock);
  17extern void debug_rt_mutex_unlock(struct rt_mutex *lock);
  18extern void debug_rt_mutex_proxy_lock(struct rt_mutex *lock,
  19                                      struct task_struct *powner);
  20extern void debug_rt_mutex_proxy_unlock(struct rt_mutex *lock);
  21extern void debug_rt_mutex_deadlock(enum rtmutex_chainwalk chwalk,
  22                                    struct rt_mutex_waiter *waiter,
  23                                    struct rt_mutex *lock);
  24extern 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
  28static inline bool debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter *waiter,
  29                                                  enum rtmutex_chainwalk walk)
  30{
  31        return (waiter != NULL);
  32}
  33
  34static inline void rt_mutex_print_deadlock(struct rt_mutex_waiter *w)
  35{
  36        debug_rt_mutex_print_deadlock(w);
  37}
  38