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

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: event trigger - test inter-event histogram trigger onchange action
   4 # requires: set_event "onchange(var)":README ping:program
   5
   6 fail() { #msg
   7     echo $1
   8     exit_fail
   9 }
  10
  11 echo "Test onchange action"
  12
  13 echo 'hist:keys=comm:newprio=prio:onchange($newprio).save(comm,prio) if comm=="ping"' >> events/sched/sched_waking/trigger
  14
  15 ping $LOCALHOST -c 3
  16 nice -n 1 ping $LOCALHOST -c 3
  17
  18 if ! grep -q "changed:" events/sched/sched_waking/hist; then
  19     fail "Failed to create onchange action inter-event histogram"
  20 fi
  21
  22 exit 0