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#!/bin/bash -e
# CoreSight deterministic workload decode (exclusive)
# SPDX-License-Identifier: GPL-2.0
# If CoreSight is not available, skip the test
perf list pmu | grep -q cs_etm || exit 2
tmpdir=$(mktemp -d /tmp/__perf_test.coresight_deterministic.XXXXX)
cleanup() {
rm -rf "${tmpdir}"
trap - EXIT TERM INT
}
trap_cleanup() {
cleanup
exit 1
}
trap trap_cleanup EXIT TERM INT
cf="$tmpdir/ctl"
af="$tmpdir/ack"
mkfifo "$cf" "$af"
# Start disabled and use the control FIFO to only record the workload and not
# startup.
perf record -o "$tmpdir/data" -e cs_etm//u -D -1 --control fifo:"$cf","$af" -- \
perf test --record-ctl fifo:"$cf","$af" -w deterministic > /dev/null 2>&1
perf script -i "$tmpdir/data" --itrace=i1i -F ip,srcline | \
grep "deterministic.c" | uniq > "$tmpdir/script" 2>/dev/null
# Remove brace lines and call sites as they may not be hit or may have
# extra hits after returning, depending on the compiler.
sed -i \
-e '/deterministic.c:8$/d' \
-e '/deterministic.c:12$/d' \
-e '/deterministic.c:15$/d' \
-e '/deterministic.c:19$/d' \
-e '/deterministic.c:23$/d' \
-e '/deterministic.c:28$/d' \
-e '/deterministic.c:34$/d' \
-e '/deterministic.c:36$/d' \
-e '/deterministic.c:37$/d' \
"$tmpdir/script"
cat > "$tmpdir/expected" << EOF
deterministic.c:24
deterministic.c:25
deterministic.c:26
deterministic.c:9
deterministic.c:10
deterministic.c:11
deterministic.c:30
deterministic.c:31
deterministic.c:32
deterministic.c:16
deterministic.c:17
deterministic.c:18
EOF
if ! diff -q "$tmpdir/script" "$tmpdir/expected"; then
echo "FAIL: line numbers don't match expected: "
head -n 100 "$tmpdir/script"
cleanup
exit 1
fi
cleanup
exit 0
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