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

   1 #!/bin/sh
   2 # description: event trigger - test inter-event histogram trigger onmatch action
   3
   4 fail() { #msg
   5     echo $1
   6     exit_fail
   7 }
   8
   9 if [ ! -f set_event ]; then
  10     echo "event tracing is not supported"
  11     exit_unsupported
  12 fi
  13
  14 if [ ! -f synthetic_events ]; then
  15     echo "synthetic event is not supported"
  16     exit_unsupported
  17 fi
  18
  19 echo "Test create synthetic event"
  20
  21 echo 'wakeup_latency  u64 lat pid_t pid char comm[16]' > synthetic_events
  22 if [ ! -d events/synthetic/wakeup_latency ]; then
  23     fail "Failed to create wakeup_latency synthetic event"
  24 fi
  25
  26 echo "Test create histogram for synthetic event"
  27 echo "Test histogram variables,simple expression support and onmatch action"
  28
  29 echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_wakeup/trigger
  30 echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_wakeup).wakeup_latency($wakeup_lat,next_pid,next_comm) if next_comm=="ping"' > events/sched/sched_switch/trigger
  31 echo 'hist:keys=comm,pid,lat:wakeup_lat=lat:sort=lat' > events/synthetic/wakeup_latency/trigger
  32
  33 ping $LOCALHOST -c 5
  34 if ! grep -q "ping" events/synthetic/wakeup_latency/hist; then
  35     fail "Failed to create onmatch action inter-event histogram"
  36 fi
  37
  38 exit 0