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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# stackcollapse python test
set -e -o pipefail
shelldir=$(dirname "$0")
# shellcheck source=lib/setup_python.sh
. "${shelldir}"/lib/setup_python.sh
if ! "$PYTHON" -c 'import perf' > /dev/null 2>&1; then
echo "Skipping test, perf python module not found"
exit 2
fi
script_dir="$(dirname "$0")/../../python"
script_path="${script_dir}/stackcollapse.py"
if [ ! -f "$script_path" ]; then
echo "Skipping test, stackcollapse.py not found at $script_path"
exit 2
fi
err=0
temp_data=""
temp_out=""
cleanup() {
rm -f "${temp_data}" "${temp_out}"
}
trap 'cleanup' EXIT TERM INT
temp_data=$(mktemp /tmp/perf.data.XXXXXX)
temp_out=$(mktemp /tmp/perf.out.XXXXXX)
echo "Testing stackcollapse.py..."
# Create a perf.data file with callchains. Use a busy workload rather than
# sleep, as an idle system may not generate any samples at all.
perf record -B -N --no-bpf-event -g -o "${temp_data}" \
-- perf test -w noploop >/dev/null 2>&1 || \
{ echo "Skipping test, perf record failed"; exit 2; }
if [ ! -s "${temp_data}" ]; then
echo "Skipping test, perf record failed to create data"
exit 2
fi
# Check that the script executes with default options
if ! perf script stackcollapse -i "${temp_data}" > "${temp_out}"; then
echo "stackcollapse.py test failed"
err=1
else
# It outputs stacks like: swapper;...;... 2
if [ ! -s "${temp_out}" ]; then
echo "Expected stack traces in output, but output is empty."
err=1
else
echo "stackcollapse default test passed."
fi
fi
# Test CLI flags (--include-pid, --include-tid, --tidy-java, --kernel) and BrokenPipeError
if ! perf script stackcollapse -i "${temp_data}" \
--include-pid --include-tid --tidy-java --kernel | head -n 1 > "${temp_out}" || \
[ ! -s "${temp_out}" ]; then
echo "stackcollapse.py options/pipe test failed"
err=1
elif ! perf script stackcollapse -i "${temp_data}" --no-comm > "${temp_out}" || \
[ ! -s "${temp_out}" ]; then
echo "stackcollapse.py --no-comm test failed"
err=1
else
echo "stackcollapse options test passed."
fi
rm -f "${temp_out}"
exit $err
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