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#!/bin/bash
# Perf event open fallback test
# SPDX-License-Identifier: GPL-2.0
skip_cnt=0
ok_cnt=0
err_cnt=0
perf_record()
{
perf record -o /dev/null "$@" -- true 1>/dev/null 2>&1
}
test_decrease_precise_ip()
{
echo "Decrease precise ip test"
perf list pmu | grep -q 'cycles' || return 2
if ! perf_record -e cycles; then
return 2
fi
# It should reduce precision level down to 0 if needed.
if ! perf_record -e cycles:P; then
return 1
fi
return 0
}
test_decrease_precise_ip_complicated()
{
echo "Decrease precise ip test (complicated case)"
perf list pmu | grep -q 'mem-loads-aux' || return 2
if ! perf_record -e '{mem-loads-aux:S,mem-loads:PS}'; then
return 1
fi
return 0
}
count_result()
{
if [ "$1" -eq 2 ] ; then
skip_cnt=$((skip_cnt + 1))
return
fi
if [ "$1" -eq 0 ] ; then
ok_cnt=$((ok_cnt + 1))
return
fi
err_cnt=$((err_cnt + 1))
}
ret=0
test_decrease_precise_ip || ret=$? ; count_result $ret ; ret=0
test_decrease_precise_ip_complicated || ret=$? ; count_result $ret ; ret=0
cleanup
if [ ${err_cnt} -gt 0 ] ; then
exit 1
fi
if [ ${ok_cnt} -gt 0 ] ; then
exit 0
fi
# Skip
exit 2
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