linux/tools/perf/tests/shell/diff.sh
James Clark a9aa5c5e40 perf test: Remove redundant shellcheck source paths
The minimum required shellcheck version treats paths with leading
variables as starting from the script's current directory, so shellcheck
is able to source all of these files without needing the extra
directives:

  v0.7.2 - 2021-04-19

  Changed
   * SC1090: A leading $x/ or $(x)/ is now treated as ./ when locating files

Remove them to avoid future copy pasting and confusion that they are
required. Because the paths weren't actually followed, they didn't have
to be accurate and accepted any string to silence the warning.

Signed-off-by: James Clark <james.clark@linaro.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2026-09-25 00:55:45 +02:00

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#!/bin/bash
# perf diff tests
# SPDX-License-Identifier: GPL-2.0
set -e
err=0
perfdata1=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
perfdata2=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
perfdata3=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
testprog="perf test -w thloop"
shelldir=$(dirname "$0")
. "${shelldir}"/lib/perf_has_symbol.sh
testsym="test_loop"
skip_test_missing_symbol ${testsym}
cleanup() {
rm -rf "${perfdata1}"
rm -rf "${perfdata1}".old
rm -rf "${perfdata2}"
rm -rf "${perfdata2}".old
rm -rf "${perfdata3}"
rm -rf "${perfdata3}".old
trap - EXIT TERM INT
}
trap_cleanup() {
cleanup
exit 1
}
trap trap_cleanup EXIT TERM INT
make_data() {
file="$1"
if ! perf record -o "${file}" ${testprog} 2> /dev/null
then
echo "Workload record [Failed record]" >&2
echo 1
return
fi
if ! perf report -i "${file}" -q | grep -q "${testsym}"
then
echo "Workload record [Failed missing output]" >&2
echo 1
return
fi
echo 0
}
test_two_files() {
echo "Basic two file diff test"
err=$(make_data "${perfdata1}")
if [ "$err" != 0 ]
then
return
fi
err=$(make_data "${perfdata2}")
if [ "$err" != 0 ]
then
return
fi
if ! perf diff "${perfdata1}" "${perfdata2}" | grep -q "${testsym}"
then
echo "Basic two file diff test [Failed diff]"
err=1
return
fi
echo "Basic two file diff test [Success]"
}
test_three_files() {
echo "Basic three file diff test"
err=$(make_data "${perfdata1}")
if [ "$err" != 0 ]
then
return
fi
err=$(make_data "${perfdata2}")
if [ "$err" != 0 ]
then
return
fi
err=$(make_data "${perfdata3}")
if [ $err != 0 ]
then
return
fi
if ! perf diff "${perfdata1}" "${perfdata2}" "${perfdata3}" | grep -q "${testsym}"
then
echo "Basic three file diff test [Failed diff]"
err=1
return
fi
echo "Basic three file diff test [Success]"
}
test_two_files
test_three_files
cleanup
exit $err