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 "$PERF_DATA" 27} 28 29trap cleanup_files EXIT TERM INT 30 31# shellcheck disable=SC2086 32perf record -o "$PERF_DATA" --call-graph fp -e cycles//u --user-callchains -- $TEST_PROGRAM 33 34# Try opening the file so any immediate errors are visible in the log 35perf script -i "$PERF_DATA" -F comm,ip,sym | head -n4 36 37# expected perf-script output if 'leaf' has been inserted correctly: 38# 39# perf 40# 728 leaf 41# 753 parent 42# 76c leafloop 43# ... remaining stack to main() ... 44 45# Each frame is separated by a tab, some spaces and an address 46SEP="[[:space:]]+ [[:xdigit:]]+" 47perf script -i "$PERF_DATA" -F comm,ip,sym | tr '\n' ' ' | \ 48 grep -E -q "perf $SEP leaf $SEP parent $SEP leafloop" 49