578  * Deadlock detection is conditional:
580  * If CONFIG_DEBUG_RT_MUTEXES=n, deadlock detection is only conducted
583  * If CONFIG_DEBUG_RT_MUTEXES=y, deadlock detection is always
587  * deadlock detection is disabled independent of the detect argument
605  * Adjust the priority chain. Also used for deadlock detection.
610  * @chwalk:	do we have to carry out deadlock detection?
783 	 * Even when we start with ww_mutex we can disable deadlock detection,  in rt_mutex_adjust_prio_chain()
784 	 * since we would supress a ww_mutex induced deadlock at [6] anyway.  in rt_mutex_adjust_prio_chain()
788 	 * NOTE: if someone were to create a deadlock between 2 ww_classes we'd  in rt_mutex_adjust_prio_chain()
803 		 * If deadlock detection is off, we stop here if we  in rt_mutex_adjust_prio_chain()
804 		 * are not the top pi waiter of the task. If deadlock  in rt_mutex_adjust_prio_chain()
819 	 * deadlock detection is off, we stop the chain walk. If its  in rt_mutex_adjust_prio_chain()
854 	 * Deadlock detection. If the lock is the same as the original  in rt_mutex_adjust_prio_chain()
857 	 * walk, we detected a deadlock.  in rt_mutex_adjust_prio_chain()
863 		 * When the deadlock is due to ww_mutex; also see above. Don't  in rt_mutex_adjust_prio_chain()
864 		 * report the deadlock and instead let the ww_mutex wound/die  in rt_mutex_adjust_prio_chain()
879 	 * If we just follow the lock chain for deadlock detection, no  in rt_mutex_adjust_prio_chain()
905 		 * No requeue [11] here. We just do deadlock detection.  in rt_mutex_adjust_prio_chain()
1060 	 * deadlock detection mode.  in rt_mutex_adjust_prio_chain()
1217 	 * Early deadlock detection. We really don't want the task to  in task_blocks_on_rt_mutex()
1220 	 * can come in before the chain walk detects the deadlock. So  in task_blocks_on_rt_mutex()
1221 	 * the other will detect the deadlock and return -EDEADLOCK,  in task_blocks_on_rt_mutex()
1222 	 * which is wrong, as the other waiter is not in a deadlock  in task_blocks_on_rt_mutex()
1281 	 * Even if full deadlock detection is on, if the owner is not  in task_blocks_on_rt_mutex()
1658 	 * deadlock detection, nothing to do here.  in rt_mutex_handle_deadlock()
1668 	WARN(1, "rtmutex deadlock detected\n");  in rt_mutex_handle_deadlock()