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

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: event trigger - test inter-event combined histogram trigger
   4
   5 fail() { #msg
   6     echo $1
   7     exit_fail
   8 }
   9
  10 if [ ! -f set_event ]; then
  11     echo "event tracing is not supported"
  12     exit_unsupported
  13 fi
  14
  15 if [ ! -f synthetic_events ]; then
  16     echo "synthetic event is not supported"
  17     exit_unsupported
  18 fi
  19
  20 echo "Test create synthetic event"
  21
  22 echo 'waking_latency  u64 lat pid_t pid' > synthetic_events
  23 if [ ! -d events/synthetic/waking_latency ]; then
  24     fail "Failed to create waking_latency synthetic event"
  25 fi
  26
  27 echo "Test combined histogram"
  28
  29 echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_waking/trigger
  30 echo 'hist:keys=pid:waking_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).waking_latency($waking_lat,pid) if comm=="ping"' > events/sched/sched_wakeup/trigger
  31 echo 'hist:keys=pid,lat:sort=pid,lat' > events/synthetic/waking_latency/trigger
  32
  33 echo 'wakeup_latency u64 lat pid_t pid' >> synthetic_events
  34 echo 'hist:keys=pid:ts1=common_timestamp.usecs if comm=="ping"' >> events/sched/sched_wakeup/trigger
  35 echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts1:onmatch(sched.sched_wakeup).wakeup_latency($wakeup_lat,next_pid) if next_comm=="ping"' > events/sched/sched_switch/trigger
  36
  37 echo 'waking+wakeup_latency u64 lat; pid_t pid' >> synthetic_events
  38 echo 'hist:keys=pid,lat:sort=pid,lat:ww_lat=$waking_lat+$wakeup_lat:onmatch(synthetic.wakeup_latency).waking+wakeup_latency($ww_lat,pid)' >> events/synthetic/wakeup_latency/trigger
  39 echo 'hist:keys=pid,lat:sort=pid,lat' >> events/synthetic/waking+wakeup_latency/trigger
  40
  41 ping $LOCALHOST -c 3
  42 if ! grep -q "pid:" events/synthetic/waking+wakeup_latency/hist; then
  43     fail "Failed to create combined histogram"
  44 fi
  45
  46 exit 0