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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
# description: event trigger - test inter-event histogram trigger snapshot action
fail() { #msg
echo $1
exit_fail
}
if [ ! -f set_event ]; then
echo "event tracing is not supported"
exit_unsupported
fi
if [ ! -f snapshot ]; then
echo "snapshot is not supported"
exit_unsupported
fi
grep -q "onchange(var)" README || exit_unsupported # version issue
grep -q "snapshot()" README || exit_unsupported # version issue
echo "Test snapshot action"
echo 1 > /sys/kernel/debug/tracing/events/sched/enable
echo 'hist:keys=comm:newprio=prio:onchange($newprio).save(comm,prio):onchange($newprio).snapshot() if comm=="ping"' >> /sys/kernel/debug/tracing/events/sched/sched_waking/trigger
ping $LOCALHOST -c 3
nice -n 1 ping $LOCALHOST -c 3
echo 0 > tracing_on
if ! grep -q "changed:" events/sched/sched_waking/hist; then
fail "Failed to create onchange action inter-event histogram"
fi
if ! grep -q "comm=ping" snapshot; then
fail "Failed to create snapshot action inter-event histogram"
fi
exit 0
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