prev_root 2029 kernel/locking/lockdep.c struct lock_list *prev_root, prev_root 2085 kernel/locking/lockdep.c prev_root->trace = save_trace(); prev_root 2086 kernel/locking/lockdep.c if (!prev_root->trace) prev_root 2088 kernel/locking/lockdep.c print_shortest_lock_dependencies(backwards_entry, prev_root);