digraph state_automaton {	{node [shape = circle] "non_preemptive"};	{node [shape = plaintext, style=invis, label=""] "__init_preemptive"};	{node [shape = doublecircle] "preemptive"};	{node [shape = circle] "preemptive"};	"__init_preemptive" -> "preemptive";	"non_preemptive" [label = "non_preemptive"];	"non_preemptive" -> "non_preemptive" [ label = "sched_waking" ];	"non_preemptive" -> "preemptive" [ label = "preempt_enable" ];	"preemptive" [label = "preemptive"];	"preemptive" -> "non_preemptive" [ label = "preempt_disable" ];	{ rank = min ;		"__init_preemptive";		"preemptive";	}}