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

   1 #!/bin/sh
   2 # SPDX-License-Identifier: GPL-2.0
   3 # description: event trigger - test inter-event histogram trigger onmatch-onmax action
   4 # requires: set_event synthetic_events events/sched/sched_process_fork/hist ping:program
   5
   6 fail() { #msg
   7     echo $1
   8     exit_fail
   9 }
  10
  11 echo "Test create synthetic event"
  12
  13 echo 'wakeup_latency  u64 lat pid_t pid char comm[16]' > synthetic_events
  14 if [ ! -d events/synthetic/wakeup_latency ]; then
  15     fail "Failed to create wakeup_latency synthetic event"
  16 fi
  17
  18 echo "Test create histogram for synthetic event"
  19 echo "Test histogram variables,simple expression support and onmatch-onmax action"
  20
  21 echo 'hist:keys=pid:ts0=common_timestamp.usecs if comm=="ping"' > events/sched/sched_wakeup/trigger
  22 echo 'hist:keys=next_pid:wakeup_lat=common_timestamp.usecs-$ts0:onmatch(sched.sched_wakeup).wakeup_latency($wakeup_lat,next_pid,next_comm):onmax($wakeup_lat).save(next_comm,prev_pid,prev_prio,prev_comm) if next_comm=="ping"' >> events/sched/sched_switch/trigger
  23 echo 'hist:keys=comm,pid,lat:wakeup_lat=lat:sort=lat' > events/synthetic/wakeup_latency/trigger
  24
  25 ping $LOCALHOST -c 5
  26 if [ ! grep -q "ping" events/synthetic/wakeup_latency/hist -o ! grep -q "max:" events/sched/sched_switch/hist]; then
  27     fail "Failed to create onmatch-onmax action inter-event histogram"
  28 fi
  29
  30 exit 0