From patchwork Thu Dec 8 13:08:04 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhao Gongyi X-Patchwork-Id: 13068381 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 E3467C4332F for ; Thu, 8 Dec 2022 13:11:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229781AbiLHNLK (ORCPT ); Thu, 8 Dec 2022 08:11:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35536 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229573AbiLHNLJ (ORCPT ); Thu, 8 Dec 2022 08:11:09 -0500 Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [45.249.212.189]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EEF7083E81; Thu, 8 Dec 2022 05:11:06 -0800 (PST) Received: from canpemm500005.china.huawei.com (unknown [172.30.72.53]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4NSZFJ5D4zzJp2y; Thu, 8 Dec 2022 21:07:32 +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 15.1.2375.31; Thu, 8 Dec 2022 21:11:04 +0800 From: Zhao Gongyi To: , , CC: Subject: [PATCH -next 1/2] selftests/intel_pstate: Add saving and restore of scaling_governor Date: Thu, 8 Dec 2022 21:08:04 +0800 Message-ID: <20221208130805.66660-2-zhaogongyi@huawei.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221208130805.66660-1-zhaogongyi@huawei.com> References: <20221208130805.66660-1-zhaogongyi@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.174.63] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To canpemm500005.china.huawei.com (7.192.104.229) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Add saving and restore of scaling_governor for cpus, otherwise the cpus will run in the policy of powersave, and it would reduce the performance as unexpected. Signed-off-by: Zhao Gongyi --- tools/testing/selftests/intel_pstate/run.sh | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) -- 2.17.1 diff --git a/tools/testing/selftests/intel_pstate/run.sh b/tools/testing/selftests/intel_pstate/run.sh index e7008f614ad7..ee78c61cccb9 100755 --- a/tools/testing/selftests/intel_pstate/run.sh +++ b/tools/testing/selftests/intel_pstate/run.sh @@ -46,6 +46,12 @@ fi max_cpus=$(($(nproc)-1)) +# Save the scaling_governor +for i in `seq 0 $max_cpus` +do + cat /sys/devices/system/cpu/cpu$i/cpufreq/scaling_governor >> /tmp/governor +done + function run_test () { file_ext=$1 @@ -125,4 +131,14 @@ done # print the table pr -aTt -5 < /tmp/result.tab +# restore the scaling_governor +i=0 +while read line +do + echo $line > /sys/devices/system/cpu/cpu$i/cpufreq/scaling_governor + let i=$i+1 +done < /tmp/governor + +rm -f /tmp/governor + exit 0