tools/testing/selftests/ftrace/test.d/trigger/inter-event/trigger-synthetic-event-dynstring.tc

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: event trigger - test inter-event histogram trigger trace action with dynamic string param
   4 # requires: set_event synthetic_events events/sched/sched_process_exec/hist "' >> synthetic_events":README ping:program
   5
   6 fail() { #msg
   7     echo $1
   8     exit_fail
   9 }
  10
  11 echo "Test create synthetic event"
  12
  13 echo 'ping_test_latency u64 lat; char filename[]' > synthetic_events
  14 if [ ! -d events/synthetic/ping_test_latency ]; then
  15     fail "Failed to create ping_test_latency synthetic event"
  16 fi
  17
  18 echo "Test create histogram for synthetic event using trace action and dynamic strings"
  19 echo "Test histogram dynamic string variables,simple expression support and trace action"
  20
  21 echo 'hist:key=pid:filenamevar=filename:ts0=common_timestamp.usecs' > events/sched/sched_process_exec/trigger
  22 echo 'hist:key=pid:lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_process_exec).ping_test_latency($lat,$filenamevar) if comm == "ping"' > events/sched/sched_process_exit/trigger
  23 echo 'hist:keys=filename,lat:sort=filename,lat' > events/synthetic/ping_test_latency/trigger
  24
  25 ping $LOCALHOST -c 5
  26
  27 if ! grep -q "ping" events/synthetic/ping_test_latency/hist; then
  28     fail "Failed to create dynamic string trace action inter-event histogram"
  29 fi
  30
  31 exit 0