1#!/bin/sh 2# Check Arm64 callgraphs are complete in fp mode 3# SPDX-License-Identifier: GPL-2.0 4 5shelldir=$(dirname "$0") 6# shellcheck source=lib/perf_has_symbol.sh 7. "${shelldir}"/lib/perf_has_symbol.sh 8 9if [ "$(uname -m)" != "aarch64" ]; then 10 exit 2 11fi 12 13if perf version --build-options | grep HAVE_DWARF_UNWIND_SUPPORT | grep -q OFF 14then 15 echo "Skipping, no dwarf unwind support" 16 exit 2 17fi 18 19skip_test_missing_symbol leafloop 20 21PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX) 22TEST_PROGRAM="perf test -w leafloop" 23 24cleanup_files() 25{ 26 rm -f "$PERF_DATA" 27} 28 29trap cleanup_files EXIT TERM INT 30 31# Add a 1 second delay to skip samples that are not in the leaf() function 32# shellcheck disable=SC2086 33perf record -o "$PERF_DATA" --call-graph fp -e cycles//u -D 1000 --user-callchains -- $TEST_PROGRAM 2> /dev/null & 34PID=$! 35 36echo " + Recording (PID=$PID)..." 37sleep 2 38echo " + Stopping perf-record..." 39 40kill $PID 41wait $PID 42 43# expected perf-script output: 44# 45# program 46# 728 leaf 47# 753 parent 48# 76c leafloop 49# ... 50 51perf script -i "$PERF_DATA" -F comm,ip,sym | head -n4 52perf script -i "$PERF_DATA" -F comm,ip,sym | head -n4 | \ 53 awk '{ if ($2 != "") sym[i++] = $2 } END { if (sym[0] != "leaf" || 54 sym[1] != "parent" || 55 sym[2] != "leafloop") exit 1 }' 56