  0: offline
  1: threads:create
  2: notify:prepare
  3: cpu:bringup
  4: idle:dead
  5: ap:offline
  6: sched:starting
  7: notify:starting
  8: ap:online
  9: cpu:teardown
 11: smpboot:threads
 12: notify:online
 44: sched:active
 45: online
