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 X-Spam-Level: X-Spam-Status: No, score=-2.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C2B9FC35242 for ; Sun, 26 Jan 2020 01:43:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 90B1C2075E for ; Sun, 26 Jan 2020 01:43:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580003000; bh=FcOjPSty7BSfPV7GNUzQSplEPafYw/6PuF71Sj14S9E=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:List-ID: From; b=yzPWugJ8lAdRLoTrTh4cPrEXuoDbxgYMz+BuF9kQo0hEprZixIwV6VQTP0WkdiH40 9SlOWcuPOzYuxiez+UMa2Wrp6mebiCaHmmByEK8DQ/Ptyr4/22EsC9BNHGwW9WaqOU kpyHla1rqqE6Xgkr8Oi2yloEvwtVm+6rZDfoOA8E= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728984AbgAZBnT (ORCPT ); Sat, 25 Jan 2020 20:43:19 -0500 Received: from mail.kernel.org ([198.145.29.99]:51450 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727163AbgAZBnT (ORCPT ); Sat, 25 Jan 2020 20:43:19 -0500 Received: from paulmck-ThinkPad-P72.home (50-39-105-78.bvtn.or.frontiernet.net [50.39.105.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id C0AA720709; Sun, 26 Jan 2020 01:43:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580002998; bh=FcOjPSty7BSfPV7GNUzQSplEPafYw/6PuF71Sj14S9E=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=UvZWIFP6V2sGmE4oI0qIsAzv1JOU/S46VjUMIUARkZAvOV73x/nMgntQzJitSNUuI i57iK5PMV3ns0FxpdFUplhssa+Dh5N3ecH242oB7pBBYH7dPRJ1AzTqwEhwTHzYaOA GQmNkzW6AQ/71aUeP67WQQwgGkCvJ+fTRpqn0aWE= Received: by paulmck-ThinkPad-P72.home (Postfix, from userid 1000) id 96A703522863; Sat, 25 Jan 2020 17:43:18 -0800 (PST) Date: Sat, 25 Jan 2020 17:43:18 -0800 From: "Paul E. McKenney" To: Borislav Petkov Cc: linux-kernel@vger.kernel.org, linux-tip-commits@vger.kernel.org, x86 Subject: Re: [tip: core/rcu] rcu: Enable tick for nohz_full CPUs slow to provide expedited QS Message-ID: <20200126014318.GA5122@paulmck-ThinkPad-P72> Reply-To: paulmck@kernel.org References: <157994897654.396.5667707782512768142.tip-bot2@tip-bot2> <20200125131425.GB16136@zn.tnic> <20200125161050.GE2935@paulmck-ThinkPad-P72> <20200125175442.GA4369@zn.tnic> <20200125194846.GF2935@paulmck-ThinkPad-P72> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200125194846.GF2935@paulmck-ThinkPad-P72> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jan 25, 2020 at 11:48:46AM -0800, Paul E. McKenney wrote: > On Sat, Jan 25, 2020 at 06:54:42PM +0100, Borislav Petkov wrote: > > On Sat, Jan 25, 2020 at 08:10:50AM -0800, Paul E. McKenney wrote: [ . . . ] > > > So could you please try out the (untested) patch below? > > > > Warning's gone. > > Very good. I will get it property prepared and tested, then send it > along to Ingo. And it passes my rcutorture testing as well! If it does fine with 0day and -next, I will send a pull request Sunday evening, Pacific Time. In the meantime, it is right here in -rcu: 59d8cc6b2e37 ("rcu: Forgive slow expedited grace periods at boot time") Thanx, Paul