LXR linux/kernel/locking/rtmutex-debug.h

   1/*
   2 * RT-Mutexes: blocking mutual exclusion locks with PI support
   3 *
   4 * started by Ingo Molnar and Thomas Gleixner:
   5 *
   6 *  Copyright (C) 2004-2006 Red Hat, Inc., Ingo Molnar <mingo@redhat.com>
   7 *  Copyright (C) 2006, Timesys Corp., Thomas Gleixner <tglx@timesys.com>
   8 *
   9 * This file contains macros used solely by rtmutex.c. Debug version.
  10 */
  11
  12extern void
  13rt_mutex_deadlock_account_lock(struct rt_mutex *lock, struct task_struct *task);
  14extern void rt_mutex_deadlock_account_unlock(struct task_struct *task);
  15extern void debug_rt_mutex_init_waiter(struct rt_mutex_waiter *waiter);
  16extern void debug_rt_mutex_free_waiter(struct rt_mutex_waiter *waiter);
  17extern void debug_rt_mutex_init(struct rt_mutex *lock, const char *name);
  18extern void debug_rt_mutex_lock(struct rt_mutex *lock);
  19extern void debug_rt_mutex_unlock(struct rt_mutex *lock);
  20extern void debug_rt_mutex_proxy_lock(struct rt_mutex *lock,
  21                                      struct task_struct *powner);
  22extern void debug_rt_mutex_proxy_unlock(struct rt_mutex *lock);
  23extern void debug_rt_mutex_deadlock(enum rtmutex_chainwalk chwalk,
  24                                    struct rt_mutex_waiter *waiter,
  25                                    struct rt_mutex *lock);
  26extern void debug_rt_mutex_print_deadlock(struct rt_mutex_waiter *waiter);
  27# define debug_rt_mutex_reset_waiter(w)                 \
  28        do { (w)->deadlock_lock = NULL; } while (0)
  29
  30static inline bool debug_rt_mutex_detect_deadlock(struct rt_mutex_waiter *waiter,
  31                                                  enum rtmutex_chainwalk walk)
  32{
  33        return (waiter != NULL);
  34}
  35
  36static inline void rt_mutex_print_deadlock(struct rt_mutex_waiter *w)
  37{
  38        debug_rt_mutex_print_deadlock(w);
  39}
  40