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