From nobody Mon Apr 6 18:44:42 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 16136C6FA8B for ; Mon, 5 Sep 2022 13:40:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237891AbiIENj7 (ORCPT ); Mon, 5 Sep 2022 09:39:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43306 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231187AbiIENj4 (ORCPT ); Mon, 5 Sep 2022 09:39:56 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E7BE81A83E; Mon, 5 Sep 2022 06:39:52 -0700 (PDT) Received: from canpemm500005.china.huawei.com (unknown [172.30.72.53]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4MLqM250N1znV57; Mon, 5 Sep 2022 21:37:18 +0800 (CST) Received: from ubuntu1804.huawei.com (10.67.174.63) by canpemm500005.china.huawei.com (7.192.104.229) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Mon, 5 Sep 2022 21:39:50 +0800 From: Zhao Gongyi To: , CC: , , , Zhao Gongyi Subject: [PATCH -next v3 4/5] selftests/cpu-hotplug: Reserve one cpu online at least Date: Mon, 5 Sep 2022 21:36:14 +0800 Message-ID: <20220905133615.139026-5-zhaogongyi@huawei.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220905133615.139026-1-zhaogongyi@huawei.com> References: <20220905133615.139026-1-zhaogongyi@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.174.63] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To canpemm500005.china.huawei.com (7.192.104.229) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Considering that we can not offline all cpus in any cases, we need to reserve one cpu online when the test offline all hotpluggable online cpus, otherwise the test will fail forever. Fixes: d89dffa976bc ("fault-injection: add selftests for cpu and memory hotplug") Signed-off-by: Zhao Gongyi --- .../selftests/cpu-hotplug/cpu-on-off-test.sh | 40 ++++++++++--------- 1 file changed, 22 insertions(+), 18 deletions(-) diff --git a/tools/testing/selftests/cpu-hotplug/cpu-on-off-test.sh b/tools= /testing/selftests/cpu-hotplug/cpu-on-off-test.sh index 184156763ccb..d5dc7e0dc726 100755 --- a/tools/testing/selftests/cpu-hotplug/cpu-on-off-test.sh +++ b/tools/testing/selftests/cpu-hotplug/cpu-on-off-test.sh @@ -149,6 +149,25 @@ offline_cpu_expect_fail() fi } +online_all_hot_pluggable_cpus() +{ + for cpu in `hotplaggable_offline_cpus`; do + online_cpu_expect_success $cpu + done +} + +offline_all_hot_pluggable_cpus() +{ + local reserve_cpu=3D$online_max + for cpu in `hotpluggable_online_cpus`; do + # Reserve one cpu oneline at least. + if [ $cpu -eq $reserve_cpu ];then + continue + fi + offline_cpu_expect_success $cpu + done +} + allcpus=3D0 online_cpus=3D0 online_max=3D0 @@ -197,25 +216,10 @@ else echo -e "\t online all offline cpus" fi -# -# Online all hot-pluggable CPUs -# -for cpu in `hotplaggable_offline_cpus`; do - online_cpu_expect_success $cpu -done +online_all_hot_pluggable_cpus -# -# Offline all hot-pluggable CPUs -# -for cpu in `hotpluggable_online_cpus`; do - offline_cpu_expect_success $cpu -done +offline_all_hot_pluggable_cpus -# -# Online all hot-pluggable CPUs again -# -for cpu in `hotplaggable_offline_cpus`; do - online_cpu_expect_success $cpu -done +online_all_hot_pluggable_cpus exit $retval -- 2.17.1