From nobody Tue Feb 10 05:26:50 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D780EEB64D9 for ; Tue, 4 Jul 2023 07:44:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231159AbjGDHop (ORCPT ); Tue, 4 Jul 2023 03:44:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55236 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231450AbjGDHoa (ORCPT ); Tue, 4 Jul 2023 03:44:30 -0400 Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [45.249.212.189]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 26FFFE7A; Tue, 4 Jul 2023 00:44:24 -0700 (PDT) Received: from kwepemm600003.china.huawei.com (unknown [172.30.72.55]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4QwF9t4yctzLnh6; Tue, 4 Jul 2023 15:42:10 +0800 (CST) Received: from localhost.localdomain (10.67.174.95) by kwepemm600003.china.huawei.com (7.193.23.202) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Tue, 4 Jul 2023 15:44:21 +0800 From: Yang Jihong To: , , , , , , , , , , , CC: Subject: [PATCH 4/5] perf test: Add test case for record tracking Date: Tue, 4 Jul 2023 07:42:16 +0000 Message-ID: <20230704074217.240939-5-yangjihong1@huawei.com> X-Mailer: git-send-email 2.30.GIT In-Reply-To: <20230704074217.240939-1-yangjihong1@huawei.com> References: <20230704074217.240939-1-yangjihong1@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.67.174.95] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemm600003.china.huawei.com (7.193.23.202) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add a new test case to record tracking side-band events for all CPUs when tracing selected CPUs Test result: # ./perf test list 2>&1 | grep 'perf record tracking tests' 95: perf record tracking tests f# ./perf test 95 95: perf record tracking tests : Ok Signed-off-by: Yang Jihong --- tools/perf/tests/shell/record_tracking.sh | 44 +++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100755 tools/perf/tests/shell/record_tracking.sh diff --git a/tools/perf/tests/shell/record_tracking.sh b/tools/perf/tests/s= hell/record_tracking.sh new file mode 100755 index 000000000000..fe05f4772999 --- /dev/null +++ b/tools/perf/tests/shell/record_tracking.sh @@ -0,0 +1,44 @@ +#!/bin/sh +# perf record tracking tests +# SPDX-License-Identifier: GPL-2.0 + +set -e + +err=3D0 +perfdata=3D$(mktemp /tmp/__perf_test.perf.data.XXXXX) + +can_cpu_wide() +{ + if ! perf record -o ${perfdata} -BN --no-bpf-event -e dummy:u -C $1 tr= ue 2>&1 >/dev/null + then + echo "record tracking test [Skipped cannot record cpu$1]" + err=3D2 + fi + + rm -f ${perfdata} + return $err +} + +test_system_wide_tracking() +{ + # Need CPU 0 and CPU 1 + can_cpu_wide 0 || return 0 + can_cpu_wide 1 || return 0 + + # Record on CPU 0 a task running on CPU 1 + perf record -BN --no-bpf-event -o ${perfdata} -e dummy:u -C 0 -- tasks= et --cpu-list 1 true + + # Should get MMAP events from CPU 1 + mmap_cnt=3D`perf script -i ${perfdata} --show-mmap-events -C 1 2>/dev/= null | grep MMAP | wc -l` + + rm -f ${perfdata} + + if [ ${mmap_cnt} -gt 0 ] ; then + return 0 + fi + + echo "Failed to record MMAP events on CPU 1 when tracing CPU 0" + return 1 +} + +test_system_wide_tracking --=20 2.30.GIT