1#!/bin/sh 2# Check Arm64 callgraphs are complete in fp mode 3# SPDX-License-Identifier: GPL-2.0 4 5lscpu | grep -q "aarch64" || exit 2 6 7PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX) 8TEST_PROGRAM="perf test -w leafloop" 9 10cleanup_files() 11{ 12 rm -f "$PERF_DATA" 13} 14 15trap cleanup_files EXIT TERM INT 16 17# Add a 1 second delay to skip samples that are not in the leaf() function 18# shellcheck disable=SC2086 19perf record -o "$PERF_DATA" --call-graph fp -e cycles//u -D 1000 --user-callchains -- $TEST_PROGRAM 2> /dev/null & 20PID=$! 21 22echo " + Recording (PID=$PID)..." 23sleep 2 24echo " + Stopping perf-record..." 25 26kill $PID 27wait $PID 28 29# expected perf-script output: 30# 31# program 32# 728 leaf 33# 753 parent 34# 76c leafloop 35# ... 36 37perf script -i "$PERF_DATA" -F comm,ip,sym | head -n4 38perf script -i "$PERF_DATA" -F comm,ip,sym | head -n4 | \ 39 awk '{ if ($2 != "") sym[i++] = $2 } END { if (sym[0] != "leaf" || 40 sym[1] != "parent" || 41 sym[2] != "leafloop") exit 1 }' 42