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=-7.8 required=3.0 tests=BAYES_00,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 1822BC433DB for ; Sat, 16 Jan 2021 17:45:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DB29A207B6 for ; Sat, 16 Jan 2021 17:45:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727355AbhAPRpG (ORCPT ); Sat, 16 Jan 2021 12:45:06 -0500 Received: from mail.kernel.org ([198.145.29.99]:36038 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727118AbhAPRpF (ORCPT ); Sat, 16 Jan 2021 12:45:05 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id A6CF6223E8; Sat, 16 Jan 2021 15:48:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1610812139; bh=vVxVxDKMgBksZsJB4PnZLyS1CXxOzr58eu8XRjlxEcs=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To:From; b=uXPlujWekrJP6tY1pw447bRdiFrLDxBhNh6f1mHMP/5bNM+1iYuVRbWtiuZfAZyk0 qHJoAfrsXtVaLcElwokSvZ/m80es/06kw9mw+qM36CYFUniXl9Mj2QTspYicILqGMM a/5NI9P/UpHa/tVgPW1u0ywQsYm5XTjryZkKIlA94+EKbMhI1G+wvhflJ8zY/U0/ke GRLns7cllWaIymFCYYDyNMHaieTdROJzYoMMnxg7wMpsAEHhM33BSxMgWM54V+eSwK 0XRKS+T+KhkyajRsu18hrxYTS/iqON2MlWPKEaDwlNbFXu/JAp9cTkru1kQmK80ISg vKeVroFmbwwwA== Received: by paulmck-ThinkPad-P72.home (Postfix, from userid 1000) id 7C78F35225DC; Sat, 16 Jan 2021 07:48:59 -0800 (PST) Date: Sat, 16 Jan 2021 07:48:59 -0800 From: "Paul E. McKenney" To: Peter Zijlstra Cc: mingo@kernel.org, tglx@linutronix.de, linux-kernel@vger.kernel.org, jiangshanlai@gmail.com, valentin.schneider@arm.com, cai@redhat.com, vincent.donnefort@arm.com, decui@microsoft.com, vincent.guittot@linaro.org, rostedt@goodmis.org, tj@kernel.org Subject: Re: [PATCH 0/8] sched: Fix hot-unplug regressions Message-ID: <20210116154859.GR2743@paulmck-ThinkPad-P72> Reply-To: paulmck@kernel.org References: <20210116113033.608340773@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210116113033.608340773@infradead.org> User-Agent: Mutt/1.9.4 (2018-02-28) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jan 16, 2021 at 12:30:33PM +0100, Peter Zijlstra wrote: > Hi, > > These patches (no longer 4), seems to fix all the hotplug regressions as per > nearly a 100 18*SRCU-P runs over-night. Nice!!! > I did clean up the patches, so possibly I wrecked it again. I've started new > runs and will again leave them running over-night. > > Paul, if you could please also throw your monster machine at it. Will do as soon as the tests I started yesterday complete, which should be this afternoon, Pacific Time. My thought is to do the full set of scenarios overnight, then try hammering either SRCU-P and/or whatever else shows up in the overnight test. Seem reasonable? Thanx, Paul