trigger/inter-event/trigger-snapshot-action-hist.tc

0001 #!/bin/sh
0002 # SPDX-License-Identifier: GPL-2.0
0003 # description: event trigger - test inter-event histogram trigger snapshot action
0004 # requires: set_event snapshot events/sched/sched_process_fork/hist "onchange(var)":README "snapshot()":README
0005
0006 fail() { #msg
0007     echo $1
0008     exit_fail
0009 }
0010
0011 echo "Test snapshot action"
0012
0013 echo 1 > events/sched/enable
0014
0015 echo 'hist:keys=comm:newprio=prio:onchange($newprio).save(comm,prio):onchange($newprio).snapshot() if comm=="ping"' >> events/sched/sched_waking/trigger
0016
0017 ping $LOCALHOST -c 3
0018 nice -n 1 ping $LOCALHOST -c 3
0019
0020 echo 0 > tracing_on
0021
0022 if ! grep -q "changed:" events/sched/sched_waking/hist; then
0023     fail "Failed to create onchange action inter-event histogram"
0024 fi
0025
0026 if ! grep -q "comm=ping" snapshot; then
0027     fail "Failed to create snapshot action inter-event histogram"
0028 fi
0029
0030 exit 0