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#!/bin/sh
# perf record offcpu profiling tests
# SPDX-License-Identifier: GPL-2.0
set -e
err=0
perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
cleanup() {
rm -f ${perfdata}
rm -f ${perfdata}.old
trap - exit term int
}
trap_cleanup() {
cleanup
exit 1
}
trap trap_cleanup exit term int
test_offcpu() {
echo "Basic off-cpu test"
if [ `id -u` != 0 ]
then
echo "Basic off-cpu test [Skipped permission]"
err=2
return
fi
if perf record --off-cpu -o ${perfdata} --quiet true 2>&1 | grep BUILD_BPF_SKEL
then
echo "Basic off-cpu test [Skipped missing BPF support]"
err=2
return
fi
if ! perf record --off-cpu -e dummy -o ${perfdata} sleep 1 2> /dev/null
then
echo "Basic off-cpu test [Failed record]"
err=1
return
fi
if ! perf evlist -i ${perfdata} | grep -q "offcpu-time"
then
echo "Basic off-cpu test [Failed record]"
err=1
return
fi
if ! perf report -i ${perfdata} -q --percent-limit=90 | egrep -q sleep
then
echo "Basic off-cpu test [Failed missing output]"
err=1
return
fi
echo "Basic off-cpu test [Success]"
}
test_offcpu
cleanup
exit $err
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