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 # requires: set_event synthetic_events events/sched/sched_process_fork/hist
   5
   6 fail() { #msg
   7     echo $1
   8     exit_fail
   9 }
  10
  11 echo "Test create synthetic event"
  12
  13 echo 'waking_latency  u64 lat pid_t pid' > synthetic_events
  14 if [ ! -d events/synthetic/waking_latency ]; then
  15     fail "Failed to create waking_latency synthetic event"
  16 fi
  17
  18 echo "Test combined histogram"
  19
  20 echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_waking/trigger
  21 echo 'hist:keys=pid:waking_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_waking).waking_latency($waking_lat,pid) if comm=="ping"' > events/sched/sched_wakeup/trigger
  22 echo 'hist:keys=pid,lat:sort=pid,lat' > events/synthetic/waking_latency/trigger
  23
  24 echo 'wakeup_latency u64 lat pid_t pid' >> synthetic_events
  25 echo 'hist:keys=pid:ts1=common_timestamp.usecs if comm=="ping"' >> events/sched/sched_wakeup/trigger
  26 echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts1:onmatch(sched.sched_wakeup).wakeup_latency($wakeup_lat,next_pid) if next_comm=="ping"' > events/sched/sched_switch/trigger
  27
  28 echo 'waking_plus_wakeup_latency u64 lat; pid_t pid' >> synthetic_events
  29 echo 'hist:keys=pid,lat:sort=pid,lat:ww_lat=$waking_lat+$wakeup_lat:onmatch(synthetic.wakeup_latency).waking_plus_wakeup_latency($ww_lat,pid)' >> events/synthetic/wakeup_latency/trigger
  30 echo 'hist:keys=pid,lat:sort=pid,lat' >> events/synthetic/waking_plus_wakeup_latency/trigger
  31
  32 ping $LOCALHOST -c 3
  33 if ! grep -q "pid:" events/synthetic/waking_plus_wakeup_latency/hist; then
  34     fail "Failed to create combined histogram"
  35 fi
  36
  37 exit 0