rt_mutex_slowlock 842 kernel/rtmutex.c rt_mutex_fastlock(lock, TASK_UNINTERRUPTIBLE, 0, rt_mutex_slowlock); rt_mutex_slowlock 863 kernel/rtmutex.c detect_deadlock, rt_mutex_slowlock); rt_mutex_slowlock 889 kernel/rtmutex.c detect_deadlock, rt_mutex_slowlock);