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#!/bin/sh
# Check Arm64 callgraphs are complete in fp mode
# SPDX-License-Identifier: GPL-2.0
shelldir=$(dirname "$0")
# shellcheck source=lib/perf_has_symbol.sh
. "${shelldir}"/lib/perf_has_symbol.sh
lscpu | grep -q "aarch64" || exit 2
if perf version --build-options | grep HAVE_DWARF_UNWIND_SUPPORT | grep -q OFF
then
echo "Skipping, no dwarf unwind support"
exit 2
fi
skip_test_missing_symbol leafloop
PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
TEST_PROGRAM="perf test -w leafloop"
cleanup_files()
{
rm -f "$PERF_DATA"
}
trap cleanup_files EXIT TERM INT
# Add a 1 second delay to skip samples that are not in the leaf() function
# shellcheck disable=SC2086
perf record -o "$PERF_DATA" --call-graph fp -e cycles//u -D 1000 --user-callchains -- $TEST_PROGRAM 2> /dev/null &
PID=$!
echo " + Recording (PID=$PID)..."
sleep 2
echo " + Stopping perf-record..."
kill $PID
wait $PID
# expected perf-script output:
#
# program
# 728 leaf
# 753 parent
# 76c leafloop
# ...
perf script -i "$PERF_DATA" -F comm,ip,sym | head -n4
perf script -i "$PERF_DATA" -F comm,ip,sym | head -n4 | \
awk '{ if ($2 != "") sym[i++] = $2 } END { if (sym[0] != "leaf" ||
sym[1] != "parent" ||
sym[2] != "leafloop") exit 1 }'
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