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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C6AF2C433FE for ; Wed, 12 Oct 2022 01:08:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229542AbiJLBI0 (ORCPT ); Tue, 11 Oct 2022 21:08:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41406 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229459AbiJLBIY (ORCPT ); Tue, 11 Oct 2022 21:08:24 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 01296796BA for ; Tue, 11 Oct 2022 18:08:21 -0700 (PDT) Received: from dggpemm500021.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4MnDtT56YHzlXZ1; Wed, 12 Oct 2022 09:03:45 +0800 (CST) Received: from dggpemm500002.china.huawei.com (7.185.36.229) by dggpemm500021.china.huawei.com (7.185.36.109) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Wed, 12 Oct 2022 09:08:20 +0800 Received: from [10.174.179.5] (10.174.179.5) by dggpemm500002.china.huawei.com (7.185.36.229) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.31; Wed, 12 Oct 2022 09:08:18 +0800 Subject: Re: [PATCH 00/20] rcu/context-tracking: Merge RCU eqs-dynticks counter to context tracking v5 To: Frederic Weisbecker CC: "Paul E . McKenney" , LKML , Peter Zijlstra , "Phil Auld" , Alex Belits , "Nicolas Saenz Julienne" , Marco Elver , Neeraj Upadhyay , Thomas Gleixner , "Nicolas Saenz Julienne" , Max Filippov , "Yu Liao" , Boqun Feng , "Marcelo Tosatti" , kernel test robot , "Paul Gortmaker" , Uladzislau Rezki , Joel Fernandes References: <20220628131619.2109651-1-frederic@kernel.org> <43a38198-d80f-2135-646c-db7e7990a401@huawei.com> <20221011191203.GA1051279@lothringen> From: Xiongfeng Wang Message-ID: <38a2a38e-c04e-7820-b923-69211898ba56@huawei.com> Date: Wed, 12 Oct 2022 09:08:17 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: <20221011191203.GA1051279@lothringen> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.174.179.5] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To dggpemm500002.china.huawei.com (7.185.36.229) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Frederic On 2022/10/12 3:12, Frederic Weisbecker wrote: > On Tue, Oct 11, 2022 at 07:37:48PM +0800, Xiongfeng Wang wrote: >> Hi, Frederic >> >> Thanks for push RCU dynticks counters to upstream. It is very useful. After it >> is done, do we have plan to revive the sys-idle feature and use it to shutdown >> the tick on the last housekeeping when the whole system is idle. I'm very glad >> to help test it if you have some demo patches on your personal repo. > > There is no plan yet but some other people seem to be interested. Would you > like to try to revive it yourself? Otherwise I may do it someday but I Thanks for your reply ! I would like to give it a try. But I'm not sure if I can make it because I'm not so familiar with the RCU subsystem. Thanks, Xiongfeng > have quite some work to complete first (ie: making CPU isolation tunable through > cpusets). > > Thanks. > . >