machine__idle_thread
tidq->thread = machine__idle_thread(machine);
tidq->prev_packet_thread = machine__idle_thread(&etm->session->machines.host);
ptq->unknown_guest_thread = machine__idle_thread(machine);
struct thread *machine__idle_thread(struct machine *machine);
struct thread *thread = machine__idle_thread(&session->machines.host);
thread = machine__idle_thread(machine);