250 	n = rb_first(&node->rb_root_in);  in __sort_chain_flat()
280 	n = rb_first(&node->rb_root_in);  in __sort_chain_graph_abs()
311 	n = rb_first(&node->rb_root_in);  in __sort_chain_graph_rel()
371 		new->rb_root_in = parent->rb_root_in;  in create_child()
372 		parent->rb_root_in = RB_ROOT;  in create_child()
374 		n = rb_first(&new->rb_root_in);  in create_child()
382 		rb_link_node(&new->rb_node_in, NULL, &parent->rb_root_in.rb_node);  in create_child()
383 		rb_insert_color(&new->rb_node_in, &parent->rb_root_in);  in create_child()
499 		p = parent->rb_root_in.rb_node;  in split_add_child()
510 		rb_insert_color(&new->rb_node_in, &parent->rb_root_in);  in split_add_child()
528 	struct rb_node **p = &root->rb_root_in.rb_node;  in append_chain_children()
555 	rb_insert_color(&rnode->rb_node_in, &root->rb_root_in);  in append_chain_children()
660 	n = rb_first(&src->rb_root_in);  in merge_chain_branch()
664 		rb_erase(&child->rb_node_in, &src->rb_root_in);  in merge_chain_branch()
813 	n = rb_first(&node->rb_root_in);  in free_callchain_node()
817 		rb_erase(&child->rb_node_in, &node->rb_root_in);  in free_callchain_node()