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

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: event trigger - test inter-event histogram trigger onmax action
   4 # requires: set_event synthetic_events events/sched/sched_process_fork/hist
   5
   6 fail() { #msg
   7     echo $1
   8     exit_fail
   9 }
  10
  11 echo "Test create synthetic event"
  12
  13 echo 'wakeup_latency  u64 lat pid_t pid char comm[16]' > synthetic_events
  14 if [ ! -d events/synthetic/wakeup_latency ]; then
  15     fail "Failed to create wakeup_latency synthetic event"
  16 fi
  17
  18 echo "Test onmax action"
  19
  20 echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' >> events/sched/sched_waking/trigger
  21 echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts0:onmax($wakeup_lat).save(next_comm,prev_pid,prev_prio,prev_comm) if next_comm=="ping"' >> events/sched/sched_switch/trigger
  22
  23 ping $LOCALHOST -c 3
  24 if ! grep -q "max:" events/sched/sched_switch/hist; then
  25     fail "Failed to create onmax action inter-event histogram"
  26 fi
  27
  28 exit 0