1#!/bin/bash 2# Test data symbol 3 4# SPDX-License-Identifier: GPL-2.0 5# Leo Yan <leo.yan@linaro.org>, 2022 6 7shelldir=$(dirname "$0") 8# shellcheck source=lib/waiting.sh 9. "${shelldir}"/lib/waiting.sh 10 11# shellcheck source=lib/perf_has_symbol.sh 12. "${shelldir}"/lib/perf_has_symbol.sh 13 14skip_if_no_mem_event() { 15 perf mem record -e list 2>&1 | grep -E -q 'available' && return 0 16 return 2 17} 18 19skip_if_no_mem_event || exit 2 20 21skip_test_missing_symbol buf1 22 23TEST_PROGRAM="perf test -w datasym" 24PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX) 25ERR_FILE=$(mktemp /tmp/__perf_test.stderr.XXXXX) 26 27check_result() { 28 # The memory report format is as below: 29 # 99.92% ... [.] buf1+0x38 30 result=$(perf mem report -i ${PERF_DATA} -s symbol_daddr -q 2>&1 | 31 awk '/buf1/ { print $4 }') 32 33 # Testing is failed if has no any sample for "buf1" 34 [ -z "$result" ] && return 1 35 36 while IFS= read -r line; do 37 # The "data1" and "data2" fields in structure "buf1" have 38 # offset "0x0" and "0x38", returns failure if detect any 39 # other offset value. 40 if [ "$line" != "buf1+0x0" ] && [ "$line" != "buf1+0x38" ]; then 41 return 1 42 fi 43 done <<< "$result" 44 45 return 0 46} 47 48cleanup_files() 49{ 50 echo "Cleaning up files..." 51 rm -f ${PERF_DATA} 52} 53 54trap cleanup_files exit term int 55 56echo "Recording workload..." 57 58# perf mem/c2c internally uses IBS PMU on AMD CPU which doesn't support 59# user/kernel filtering and per-process monitoring, spin program on 60# specific CPU and test in per-CPU mode. 61is_amd=$(grep -E -c 'vendor_id.*AuthenticAMD' /proc/cpuinfo) 62if (($is_amd >= 1)); then 63 perf mem record -vvv -o ${PERF_DATA} -C 0 -- taskset -c 0 $TEST_PROGRAM 2>"${ERR_FILE}" & 64else 65 perf mem record -vvv --all-user -o ${PERF_DATA} -- $TEST_PROGRAM 2>"${ERR_FILE}" & 66fi 67 68PERFPID=$! 69 70wait_for_perf_to_start ${PERFPID} "${ERR_FILE}" 71 72sleep 1 73 74kill $PERFPID 75wait $PERFPID 76 77check_result 78exit $? 79