print_lock_name
print_lock_name(NULL, target->class);
print_lock_name(NULL, class);
print_lock_name(prev, hlock_class(prev));
print_lock_name(next, hlock_class(next));
print_lock_name(NULL, backwards_entry->class);
print_lock_name(NULL, forwards_entry->class);
print_lock_name(NULL, lock_classes + chain_hlock_class_idx(hlock_id));
print_lock_name(NULL, other->class);
print_lock_name(hlock, lock);