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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 23A8CC433DB for ; Sat, 9 Jan 2021 01:13:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DA8C223AAA for ; Sat, 9 Jan 2021 01:13:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726518AbhAIBN5 (ORCPT ); Fri, 8 Jan 2021 20:13:57 -0500 Received: from casper.infradead.org ([90.155.50.34]:60892 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725844AbhAIBN4 (ORCPT ); Fri, 8 Jan 2021 20:13:56 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=GFi/a+k1HV7G0k3FC/yL6n4O7ONrdjcIj5VhIzNlBxI=; b=NFOiddK2qND7tjI20jyRG/kocz f1/faQ6zEiEj2bkwlIlMI3wBuSg9RwPkFslW1upnLJhVSuvoTDoncre0AXzVRGFcScPzKej9DaPKL 2vWXD4WBtobctOcZIfYHSXg2/1UT53NYzMXCngmFERwqo9RpPoFnUfFvbuWq+s3NDfs8VkDFo4sIi uSc2kXxTzOa6UXrf89Mab/A/DEAfNjZzUek+Py4ujsZK7wZtc2UDp1qo390qEIAtZRKvQswPEjBMb 7plE3QsEc68czdGdUGsn/tGxELkdNm52XBnYTKNreBpRC/yUMqvXoOmfn8Ei0Q0ViU3FFbONem1Z/ 9bFcpucg==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by casper.infradead.org with esmtpsa (Exim 4.94 #2 (Red Hat Linux)) id 1kxWlL-0009OI-K2; Thu, 07 Jan 2021 15:00:17 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 1730D3013E5; Thu, 7 Jan 2021 15:59:43 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id F117B2BB7DCC3; Thu, 7 Jan 2021 15:59:42 +0100 (CET) Date: Thu, 7 Jan 2021 15:59:42 +0100 From: Peter Zijlstra To: "Paul E. McKenney" Cc: Yury Norov , Linux Kernel Mailing List , kernel-team@fb.com, Paul Gortmaker Subject: Re: [PATCH RFC cpumask 4/5] cpumask: Add "last" alias for cpu list specifications Message-ID: References: <20210106004850.GA11682@paulmck-ThinkPad-P72> <20210106004956.11961-4-paulmck@kernel.org> <20210107144757.GK2743@paulmck-ThinkPad-P72> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210107144757.GK2743@paulmck-ThinkPad-P72> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jan 07, 2021 at 06:47:57AM -0800, Paul E. McKenney wrote: > > I don't really see the use of the ranges thing, CPU enumeration just > > isn't sane like that. Also, I should really add that randomization pass > > to the CPU enumeration :-) > > Please don't!!! Why not, the BIOS more or less already does that on a per machine basis anyway. Doing it per boot just makes things more reliably screwy ;-)