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#!/bin/bash
# perf c2c tests
# SPDX-License-Identifier: GPL-2.0
set -e
err=0
perfdata=$(mktemp /tmp/__perf_c2c_test.perf.data.XXXXX)
funcdata=$(mktemp /tmp/__perf_c2c_function_test.perf.data.XXXXX)
perfout=$(mktemp /tmp/__perf_c2c_test.output.XXXXX)
cleanup() {
rm -f "${perfdata}"
rm -f "${perfdata}".old
rm -f "${funcdata}"
rm -f "${funcdata}".old
rm -f "${perfout}"
trap - EXIT TERM INT
}
trap_cleanup() {
echo "Unexpected signal in ${FUNCNAME[1]}"
cleanup
exit 1
}
trap trap_cleanup EXIT TERM INT
check_c2c_support() {
# Check if perf c2c record works.
if ! perf c2c record -o "${perfdata}" -- true > /dev/null 2>&1 ; then
return 1
fi
return 0
}
test_c2c_record_report() {
echo "c2c record and report test"
if ! check_c2c_support ; then
echo "c2c record and report test [Skipped: perf c2c record failed (possibly missing hardware support)]"
err=2
return
fi
# Run a workload that does some memory operations.
if ! perf c2c record -o "${perfdata}" -- perf test -w datasym 1 > /dev/null 2>&1 ; then
echo "c2c record and report test [Skipped: perf c2c record failed during workload]"
err=2
return
fi
if ! perf c2c report -i "${perfdata}" --stdio > /dev/null 2>&1 ; then
echo "c2c record and report test [Failed: report failed]"
err=1
return
fi
if ! perf c2c report -i "${perfdata}" -N > /dev/null 2>&1 ; then
echo "c2c record and report test [Failed: report -N failed]"
err=1
return
fi
echo "c2c record and report test [Success]"
}
test_c2c_function_report() {
echo "c2c function stdio report test"
if perf c2c report -i "${perfdata}" --function -c pid > "${perfout}" 2>&1 ; then
echo "c2c function stdio report test [Failed: report accepted missing iaddr]"
err=1
return
fi
if ! grep -Fq "The function view requires iaddr in --coalesce." "${perfout}" ; then
echo "c2c function stdio report test [Failed: missing iaddr diagnostic]"
cat "${perfout}"
err=1
return
fi
if grep -Fq "Shared Data Functions Table" "${perfout}" ; then
echo "c2c function stdio report test [Failed: partial report on missing iaddr]"
cat "${perfout}"
err=1
return
fi
if perf c2c report -i "${perfdata}" --function --stats > "${perfout}" 2>&1 ; then
echo "c2c function stdio report test [Failed: accepted conflicting options]"
err=1
return
fi
if ! grep -Fq -- "--stats and --function cannot be used together." "${perfout}" ; then
echo "c2c function stdio report test [Failed: missing conflict diagnostic]"
cat "${perfout}"
err=1
return
fi
# Exercise contended futex hash-bucket locks so the function view can get
# reader, writer, and cacheline rows without changing the original test.
if ! perf c2c record -o "${funcdata}" -- \
perf bench futex hash -t 4 -r 1 -s > /dev/null 2>&1 ; then
echo "c2c function stdio report test [Skipped: recording failed]"
err=2
return
fi
if ! perf c2c report -i "${funcdata}" --function > "${perfout}" 2>&1 ; then
echo "c2c function stdio report test [Failed: report failed]"
cat "${perfout}"
err=1
return
fi
for expected in "Shared Data Functions Table" \
"# Cycles Store" \
"# % count Function / Contending function / Cacheline" \
"# ......... ......." ; do
if ! grep -Fq "${expected}" "${perfout}" ; then
echo "c2c function stdio report test [Failed: missing '${expected}']"
cat "${perfout}"
err=1
return
fi
done
for unexpected in "Shared Data Cache Line Table" \
"Shared Cache Line Distribution Pareto" ; do
if grep -Fq "${unexpected}" "${perfout}" ; then
echo "c2c function stdio report test [Failed: found '${unexpected}']"
cat "${perfout}"
err=1
return
fi
done
if ! awk '/^# \.+/ { body = 1; next }
body && !/^#/ && NF { found = 1 }
END { exit !found }' "${perfout}" ; then
echo "c2c function stdio report test [Skipped: no contended samples]"
err=2
return
fi
# The spaces intentionally verify per-level indentation and expanded
# fold-sign placement without depending on symbol names.
for expected in \
'^ - +[0-9]+\.[0-9]+% +[0-9]+ - ' \
'^ +[0-9]+ - ' \
'^ +[0-9]+ 0x[[:xdigit:]]+$' ; do
if ! grep -Eq "${expected}" "${perfout}" ; then
echo "c2c function stdio report test [Failed: missing hierarchy row]"
echo " ${expected}"
cat "${perfout}"
err=1
return
fi
done
if awk '/^# \.+/ { body = 1; next }
body && /[[:blank:]]$/ { found = 1 }
END { exit !found }' "${perfout}" ; then
echo "c2c function stdio report test [Failed: trailing whitespace in table body]"
cat "${perfout}"
err=1
return
fi
echo "c2c function stdio report test [Success]"
}
test_c2c_record_report
if [ "${err}" -eq 0 ]; then
test_c2c_function_report
fi
cleanup
exit $err
|
