From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D7B3DC433EF for ; Tue, 9 Nov 2021 16:30:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C0B576102A for ; Tue, 9 Nov 2021 16:30:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234501AbhKIQdk (ORCPT ); Tue, 9 Nov 2021 11:33:40 -0500 Received: from foss.arm.com ([217.140.110.172]:35884 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234491AbhKIQdj (ORCPT ); Tue, 9 Nov 2021 11:33:39 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id DAAA8ED1; Tue, 9 Nov 2021 08:30:52 -0800 (PST) Received: from ip-10-252-15-108.eu-west-1.compute.internal (unknown [10.252.15.108]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id C719E3F800; Tue, 9 Nov 2021 08:30:50 -0800 (PST) From: German Gomez To: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, acme@kernel.org Cc: German Gomez , John Garry , Will Deacon , Mathieu Poirier , Leo Yan , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 3/3] perf arm-spe: Snapshot mode test Date: Tue, 9 Nov 2021 16:30:09 +0000 Message-Id: <20211109163009.92072-4-german.gomez@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211109163009.92072-1-german.gomez@arm.com> References: <20211109163009.92072-1-german.gomez@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-perf-users@vger.kernel.org Shell script test_arm_spe.sh has been added to test the recording of SPE tracing events in snapshot mode. Signed-off-by: German Gomez --- tools/perf/tests/shell/test_arm_spe.sh | 89 ++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) create mode 100755 tools/perf/tests/shell/test_arm_spe.sh diff --git a/tools/perf/tests/shell/test_arm_spe.sh b/tools/perf/tests/shell/test_arm_spe.sh new file mode 100755 index 000000000..e59044edc --- /dev/null +++ b/tools/perf/tests/shell/test_arm_spe.sh @@ -0,0 +1,89 @@ +#!/bin/sh +# Check Arm SPE trace data recording and synthesized samples + +# Uses the 'perf record' to record trace data of Arm SPE events; +# then verify if any SPE event samples are generated by SPE with +# 'perf script' and 'perf report' commands. + +# SPDX-License-Identifier: GPL-2.0 +# German Gomez , 2021 + +skip_if_no_arm_spe_event() { + perf list | egrep -q 'arm_spe_[0-9]+//' && return 0 + + # arm_spe event doesn't exist + return 2 +} + +skip_if_no_arm_spe_event || exit 2 + +perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX) +glb_err=0 + +cleanup_files() +{ + rm -f ${perfdata} + exit $glb_err +} + +trap cleanup_files exit term int + +arm_spe_report() { + if [ $2 != 0 ]; then + echo "$1: FAIL" + glb_err=$2 + else + echo "$1: PASS" + fi +} + +perf_script_samples() { + echo "Looking at perf.data file for dumping samples:" + + # from arm-spe.c/arm_spe_synth_events() + events="(ld1-miss|ld1-access|llc-miss|lld-access|tlb-miss|tlb-access|branch-miss|remote-access|memory)" + + # Below is an example of the samples dumping: + # dd 3048 [002] 1 l1d-access: ffffaa64999c __GI___libc_write+0x3c (/lib/aarch64-linux-gnu/libc-2.27.so) + # dd 3048 [002] 1 tlb-access: ffffaa64999c __GI___libc_write+0x3c (/lib/aarch64-linux-gnu/libc-2.27.so) + # dd 3048 [002] 1 memory: ffffaa64999c __GI___libc_write+0x3c (/lib/aarch64-linux-gnu/libc-2.27.so) + perf script -F,-time -i ${perfdata} 2>&1 | \ + egrep " +$1 +[0-9]+ .* +${events}:(.*:)? +" > /dev/null 2>&1 +} + +perf_report_samples() { + echo "Looking at perf.data file for reporting samples:" + + # Below is an example of the samples reporting: + # 73.04% 73.04% dd libc-2.27.so [.] _dl_addr + # 7.71% 7.71% dd libc-2.27.so [.] getenv + # 2.59% 2.59% dd ld-2.27.so [.] strcmp + perf report --stdio -i ${perfdata} 2>&1 | \ + egrep " +[0-9]+\.[0-9]+% +[0-9]+\.[0-9]+% +$1 " > /dev/null 2>&1 +} + +arm_spe_snapshot_test() { + echo "Recording trace with snapshot mode $perfdata" + perf record -o ${perfdata} -e arm_spe// -S \ + -- dd if=/dev/zero of=/dev/null > /dev/null 2>&1 & + PERFPID=$! + + # Wait for perf program + sleep 1 + + # Send signal to snapshot trace data + kill -USR2 $PERFPID + + # Stop perf program + kill $PERFPID + wait $PERFPID + + perf_script_samples dd && + perf_report_samples dd + + err=$? + arm_spe_report "SPE snapshot testing" $err +} + +arm_spe_snapshot_test +exit $glb_err -- 2.25.1