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#!/bin/sh
# perf trace summary (exclusive)
# SPDX-License-Identifier: GPL-2.0
# Check that perf trace works with various summary mode
# shellcheck source=lib/probe.sh
. "$(dirname $0)"/lib/probe.sh
skip_if_no_perf_trace || exit 2
[ "$(id -u)" = 0 ] || exit 2
OUTPUT=$(mktemp /tmp/perf_trace_test.XXXXX)
test_perf_trace() {
args=$1
workload="true"
search="^\s*(open|read|close).*[0-9]+%$"
echo "testing: perf trace ${args} -- ${workload}"
perf trace ${args} -- ${workload} >${OUTPUT} 2>&1
if [ $? -ne 0 ]; then
echo "Error: perf trace ${args} failed unexpectedly"
cat ${OUTPUT}
rm -f ${OUTPUT}
exit 1
fi
count=$(grep -E -c -m 3 "${search}" ${OUTPUT})
if [ "${count}" != "3" ]; then
echo "Error: cannot find enough pattern ${search} in the output"
cat ${OUTPUT}
rm -f ${OUTPUT}
exit 1
fi
}
# summary only for a process
test_perf_trace "-s"
# normal output with summary at the end
test_perf_trace "-S"
# summary only with an explicit summary mode
test_perf_trace "-s --summary-mode=thread"
# summary with normal output - total summary mode
test_perf_trace "-S --summary-mode=total"
# summary only for system wide - per-thread summary
test_perf_trace "-as --summary-mode=thread --no-bpf-summary"
# summary only for system wide - total summary mode
test_perf_trace "-as --summary-mode=total --no-bpf-summary"
if ! perf check feature -q bpf; then
echo "Skip --bpf-summary tests as perf built without libbpf"
rm -f ${OUTPUT}
exit 2
fi
# summary only for system wide - per-thread summary with BPF
test_perf_trace "-as --summary-mode=thread --bpf-summary"
# summary only for system wide - total summary mode with BPF
test_perf_trace "-as --summary-mode=total --bpf-summary"
# summary with normal output for system wide - total summary mode with BPF
test_perf_trace "-aS --summary-mode=total --bpf-summary"
# summary only for system wide - cgroup summary mode with BPF
test_perf_trace "-as --summary-mode=cgroup --bpf-summary"
# summary with normal output for system wide - cgroup summary mode with BPF
test_perf_trace "-aS --summary-mode=cgroup --bpf-summary"
rm -f ${OUTPUT}
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