thread__set_comm
thread__set_comm(thread, prev_comm, sample->time);
thread__set_comm(thread, idle_comm, 0);
thread__set_comm(thread, fake_threads[i].comm, 0);
thread__set_comm(t, task.comm, /*timestamp=*/0)) {
thread__set_comm(idle, "swapper", /*timestamp=*/0);
err = thread__set_comm(pt->unknown_thread, "unknown", 0);
if (!thread || thread__set_comm(thread, "swapper", 0) ||
thread__set_comm(thread, comm, 0);
err = thread__set_comm(thread, comm, 0);
err = thread__set_comm(thread, comm, timestamp);