tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-inter-event-combined-hist.tc

   1 #!/bin/sh
   2 # description: event trigger - test inter-event combined histogram trigger
   3
   4 do_reset() {
   5     reset_trigger
   6     echo > set_event
   7     clear_trace
   8 }
   9
  10 fail() { #msg
  11     do_reset
  12     echo $1
  13     exit_fail
  14 }
  15
  16 if [ ! -f set_event ]; then
  17     echo "event tracing is not supported"
  18     exit_unsupported
  19 fi
  20
  21 if [ ! -f synthetic_events ]; then
  22     echo "synthetic event is not supported"
  23     exit_unsupported
  24 fi
  25
  26 reset_tracer
  27 do_reset
  28 clear_synthetic_events
  29
  30 echo "Test create synthetic event"
  31
  32 echo 'waking_latency  u64 lat pid_t pid' > synthetic_events
  33 if [ ! -d events/synthetic/waking_latency ]; then
  34     fail "Failed to create waking_latency synthetic event"
  35 fi
  36
  37 echo "Test combined histogram"
  38
  39 echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_waking/trigger
  40 echo 'hist:keys=pid:waking_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).waking_latency($waking_lat,pid) if comm=="ping"' > events/sched/sched_wakeup/trigger
  41 echo 'hist:keys=pid,lat:sort=pid,lat' > events/synthetic/waking_latency/trigger
  42
  43 echo 'wakeup_latency u64 lat pid_t pid' >> synthetic_events
  44 echo 'hist:keys=pid:ts1=common_timestamp.usecs if comm=="ping"' >> events/sched/sched_wakeup/trigger
  45 echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts1:onmatch(sched.sched_wakeup).wakeup_latency($wakeup_lat,next_pid) if next_comm=="ping"' > events/sched/sched_switch/trigger
  46
  47 echo 'waking+wakeup_latency u64 lat; pid_t pid' >> synthetic_events
  48 echo 'hist:keys=pid,lat:sort=pid,lat:ww_lat=$waking_lat+$wakeup_lat:onmatch(synthetic.wakeup_latency).waking+wakeup_latency($ww_lat,pid)' >> events/synthetic/wakeup_latency/trigger
  49 echo 'hist:keys=pid,lat:sort=pid,lat' >> events/synthetic/waking+wakeup_latency/trigger
  50
  51 ping localhost -c 3
  52 if ! grep -q "pid:" events/synthetic/waking+wakeup_latency/hist; then
  53     fail "Failed to create combined histogram"
  54 fi
  55
  56 do_reset
  57
  58 exit 0