digraph state_automaton { center = true; size = "7,11"; {node [shape = plaintext] "sched"}; {node [shape = plaintext, style=invis, label=""] "__init_thread"}; {node [shape = ellipse] "thread"}; {node [shape = plaintext] "thread"}; "__init_thread" -> "thread"; "sched" [label = "sched"]; "sched" -> "sched" [ label = "sched_switch" ]; "sched" -> "thread" [ label = "schedule_exit" ]; "thread" [label = "thread", color = green3]; "thread" -> "sched" [ label = "schedule_entry" ]; { rank = min ; "__init_thread"; "thread"; } }