16b1b208bSGerman Gomez#!/bin/sh 26b1b208bSGerman Gomez# Check Arm SPE trace data recording and synthesized samples 36b1b208bSGerman Gomez 46b1b208bSGerman Gomez# Uses the 'perf record' to record trace data of Arm SPE events; 56b1b208bSGerman Gomez# then verify if any SPE event samples are generated by SPE with 66b1b208bSGerman Gomez# 'perf script' and 'perf report' commands. 76b1b208bSGerman Gomez 86b1b208bSGerman Gomez# SPDX-License-Identifier: GPL-2.0 96b1b208bSGerman Gomez# German Gomez <german.gomez@arm.com>, 2021 106b1b208bSGerman Gomez 116b1b208bSGerman Gomezskip_if_no_arm_spe_event() { 12818448e9STiezhu Yang perf list | grep -E -q 'arm_spe_[0-9]+//' && return 0 136b1b208bSGerman Gomez 146b1b208bSGerman Gomez # arm_spe event doesn't exist 156b1b208bSGerman Gomez return 2 166b1b208bSGerman Gomez} 176b1b208bSGerman Gomez 186b1b208bSGerman Gomezskip_if_no_arm_spe_event || exit 2 196b1b208bSGerman Gomez 206b1b208bSGerman Gomezperfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX) 216b1b208bSGerman Gomezglb_err=0 226b1b208bSGerman Gomez 236b1b208bSGerman Gomezcleanup_files() 246b1b208bSGerman Gomez{ 256b1b208bSGerman Gomez rm -f ${perfdata} 2600b32625SNamhyung Kim rm -f ${perfdata}.old 276b1b208bSGerman Gomez exit $glb_err 286b1b208bSGerman Gomez} 296b1b208bSGerman Gomez 30*e0da03c7SAbhirup Debtrap cleanup_files EXIT TERM INT 316b1b208bSGerman Gomez 326b1b208bSGerman Gomezarm_spe_report() { 3300b32625SNamhyung Kim if [ $2 = 0 ]; then 3400b32625SNamhyung Kim echo "$1: PASS" 3500b32625SNamhyung Kim elif [ $2 = 2 ]; then 3600b32625SNamhyung Kim echo "$1: SKIPPED" 3700b32625SNamhyung Kim else 386b1b208bSGerman Gomez echo "$1: FAIL" 396b1b208bSGerman Gomez glb_err=$2 406b1b208bSGerman Gomez fi 416b1b208bSGerman Gomez} 426b1b208bSGerman Gomez 436b1b208bSGerman Gomezperf_script_samples() { 446b1b208bSGerman Gomez echo "Looking at perf.data file for dumping samples:" 456b1b208bSGerman Gomez 466b1b208bSGerman Gomez # from arm-spe.c/arm_spe_synth_events() 476b1b208bSGerman Gomez events="(ld1-miss|ld1-access|llc-miss|lld-access|tlb-miss|tlb-access|branch-miss|remote-access|memory)" 486b1b208bSGerman Gomez 496b1b208bSGerman Gomez # Below is an example of the samples dumping: 506b1b208bSGerman Gomez # dd 3048 [002] 1 l1d-access: ffffaa64999c __GI___libc_write+0x3c (/lib/aarch64-linux-gnu/libc-2.27.so) 516b1b208bSGerman Gomez # dd 3048 [002] 1 tlb-access: ffffaa64999c __GI___libc_write+0x3c (/lib/aarch64-linux-gnu/libc-2.27.so) 526b1b208bSGerman Gomez # dd 3048 [002] 1 memory: ffffaa64999c __GI___libc_write+0x3c (/lib/aarch64-linux-gnu/libc-2.27.so) 536b1b208bSGerman Gomez perf script -F,-time -i ${perfdata} 2>&1 | \ 54818448e9STiezhu Yang grep -E " +$1 +[0-9]+ .* +${events}:(.*:)? +" > /dev/null 2>&1 556b1b208bSGerman Gomez} 566b1b208bSGerman Gomez 576b1b208bSGerman Gomezperf_report_samples() { 586b1b208bSGerman Gomez echo "Looking at perf.data file for reporting samples:" 596b1b208bSGerman Gomez 606b1b208bSGerman Gomez # Below is an example of the samples reporting: 616b1b208bSGerman Gomez # 73.04% 73.04% dd libc-2.27.so [.] _dl_addr 626b1b208bSGerman Gomez # 7.71% 7.71% dd libc-2.27.so [.] getenv 636b1b208bSGerman Gomez # 2.59% 2.59% dd ld-2.27.so [.] strcmp 646b1b208bSGerman Gomez perf report --stdio -i ${perfdata} 2>&1 | \ 65818448e9STiezhu Yang grep -E " +[0-9]+\.[0-9]+% +[0-9]+\.[0-9]+% +$1 " > /dev/null 2>&1 666b1b208bSGerman Gomez} 676b1b208bSGerman Gomez 686b1b208bSGerman Gomezarm_spe_snapshot_test() { 696b1b208bSGerman Gomez echo "Recording trace with snapshot mode $perfdata" 706b1b208bSGerman Gomez perf record -o ${perfdata} -e arm_spe// -S \ 716b1b208bSGerman Gomez -- dd if=/dev/zero of=/dev/null > /dev/null 2>&1 & 726b1b208bSGerman Gomez PERFPID=$! 736b1b208bSGerman Gomez 746b1b208bSGerman Gomez # Wait for perf program 756b1b208bSGerman Gomez sleep 1 766b1b208bSGerman Gomez 776b1b208bSGerman Gomez # Send signal to snapshot trace data 786b1b208bSGerman Gomez kill -USR2 $PERFPID 796b1b208bSGerman Gomez 806b1b208bSGerman Gomez # Stop perf program 816b1b208bSGerman Gomez kill $PERFPID 826b1b208bSGerman Gomez wait $PERFPID 836b1b208bSGerman Gomez 846b1b208bSGerman Gomez perf_script_samples dd && 856b1b208bSGerman Gomez perf_report_samples dd 866b1b208bSGerman Gomez 876b1b208bSGerman Gomez err=$? 886b1b208bSGerman Gomez arm_spe_report "SPE snapshot testing" $err 896b1b208bSGerman Gomez} 906b1b208bSGerman Gomez 9100b32625SNamhyung Kimarm_spe_system_wide_test() { 9200b32625SNamhyung Kim echo "Recording trace with system-wide mode $perfdata" 9300b32625SNamhyung Kim 9400b32625SNamhyung Kim perf record -o - -e dummy -a -B true > /dev/null 2>&1 9500b32625SNamhyung Kim if [ $? != 0 ]; then 9600b32625SNamhyung Kim arm_spe_report "SPE system-wide testing" 2 9700b32625SNamhyung Kim return 9800b32625SNamhyung Kim fi 9900b32625SNamhyung Kim 10000b32625SNamhyung Kim perf record -o ${perfdata} -e arm_spe// -a --no-bpf-event \ 10100b32625SNamhyung Kim -- dd if=/dev/zero of=/dev/null count=100000 > /dev/null 2>&1 10200b32625SNamhyung Kim 10300b32625SNamhyung Kim perf_script_samples dd && 10400b32625SNamhyung Kim perf_report_samples dd 10500b32625SNamhyung Kim 10600b32625SNamhyung Kim err=$? 10700b32625SNamhyung Kim arm_spe_report "SPE system-wide testing" $err 10800b32625SNamhyung Kim} 10900b32625SNamhyung Kim 1106b1b208bSGerman Gomezarm_spe_snapshot_test 11100b32625SNamhyung Kimarm_spe_system_wide_test 11200b32625SNamhyung Kim 1136b1b208bSGerman Gomezexit $glb_err 114