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#!/bin/bash
# perf inject to convert DWARF callchains to regular ones
# SPDX-License-Identifier: GPL-2.0
if ! perf check feature -q dwarf; then
echo "SKIP: DWARF support is not available"
exit 2
fi
TESTDATA=$(mktemp /tmp/perf-test.XXXXXX)
err=0
cleanup()
{
trap - EXIT TERM INT
rm -f ${TESTDATA}*
}
trap_cleanup()
{
cleanup
exit 1
}
trap trap_cleanup EXIT TERM INT
echo "recording data with DWARF callchain"
perf record -F 999 --call-graph dwarf -o "${TESTDATA}" -- perf test -w noploop
echo "convert DWARF callchain using perf inject"
perf inject -i "${TESTDATA}" --convert-callchain -o "${TESTDATA}.new"
perf report -i "${TESTDATA}" --no-children -q --percent-limit=1 > ${TESTDATA}.out
perf report -i "${TESTDATA}.new" --no-children -q --percent-limit=1 > ${TESTDATA}.new.out
echo "compare the both result excluding inlined functions"
if diff -u "${TESTDATA}.out" "${TESTDATA}.new.out" | grep "^- " | grep -qv "(inlined)"; then
echo "Found some differences"
diff -u "${TESTDATA}.out" "${TESTDATA}.new.out"
err=1
fi
cleanup
exit $err
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