Received: by 2002:a05:6358:a55:b0:ec:fcf4:3ecf with SMTP id 21csp3165091rwb; Fri, 20 Jan 2023 12:07:27 -0800 (PST) X-Google-Smtp-Source: AMrXdXsQj79wX/nrARyAt4arvXIyNMdlh7aGABEWeLSLylfHsp33YPUew0exMLv/T7QypSbs/HeA X-Received: by 2002:a62:6302:0:b0:582:848c:6281 with SMTP id x2-20020a626302000000b00582848c6281mr15331923pfb.2.1674245246845; Fri, 20 Jan 2023 12:07:26 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1674245246; cv=none; d=google.com; s=arc-20160816; b=MOyjfTGc3krP/kCXspxOIYv4LTqqeaoxTGRtvf1gF/KEdT+mBXGVd1d+mlPSJGzIO2 86grM37fgtikFBPeukPUw0n4dGHbw+Elf5UJ1mDqpxKky1oSiQdDkGtmizvfgH7vewh+ sLcs4H962uTJt/3zSZXVn01q8UQh5nXtfGVaZGjN2Bqu5120IHfEA44Hy7Bqx2BnSk/5 qvGrtVjaSipV97GWyL36eoWIdmVOSLLvn/fX1PvFl6CWUqnLKA//Q2YEru5a9ntH3SRY d63sxImxcYe2XJyFUAikvZOazQaHSXd8egCSDcBWplNZZObHVq2Pxa7yYRckCs7VAGtv ss3g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date; bh=YPern5yXsQ7tDCkL8MtivfPDZX8GSE4+vic/aocNWXA=; b=BMf1n1fBjnplHIvylvPvCtMiZZ9LXyE/fuzf/2CWC/WdaRHS56bf9ZD3ZkBKeeVk6N NScExBneFfh4EJtLXvqjkEYNK4zxRrI/k8TV+uWLbU0S1iCUv5Vefjby8mbnf14+fopA BzDuSwjjb/pZK6GUNuQVbzGNqsY5BDwiBzRGSCfy79trFYUWAOjVA7MTQETReaU/4Opq +DxzeVmWnXvepBZY37aE4ZmI3S8mqeg1wQ10FRz2CLs+rfQihzyBGjfW9/bjENPo9ykC hWOt+XJwrUUi/81jjr8sbei+pvbztP3KvseC1vdr6Kmt2uuGV0C1JP0LHfC1ELdd8Fb7 BvMg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id u1-20020a056a00098100b0058d8e5bbbc2si21271507pfg.146.2023.01.20.12.07.20; Fri, 20 Jan 2023 12:07:26 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229700AbjATSQP (ORCPT + 50 others); Fri, 20 Jan 2023 13:16:15 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34382 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229472AbjATSQN (ORCPT ); Fri, 20 Jan 2023 13:16:13 -0500 Received: from netrider.rowland.org (netrider.rowland.org [192.131.102.5]) by lindbergh.monkeyblade.net (Postfix) with SMTP id A9D469370B for ; Fri, 20 Jan 2023 10:15:59 -0800 (PST) Received: (qmail 42488 invoked by uid 1000); 20 Jan 2023 13:15:58 -0500 Date: Fri, 20 Jan 2023 13:15:58 -0500 From: Alan Stern To: "Paul E. McKenney" Cc: Jonas Oberhauser , Andrea Parri , Jonas Oberhauser , Peter Zijlstra , will , "boqun.feng" , npiggin , dhowells , "j.alglave" , "luc.maranget" , akiyks , dlustig , joel , urezki , quic_neeraju , frederic , Kernel development list Subject: Re: Internal vs. external barriers (was: Re: Interesting LKMM litmus test) Message-ID: References: <20230118211201.GL2948950@paulmck-ThinkPad-P17-Gen-1> <09f084d2-6128-7f83-b2a5-cbe236b1678d@huaweicloud.com> <20230119001147.GN2948950@paulmck-ThinkPad-P17-Gen-1> <0fae983b-2a7c-d44e-8881-53d5cc053f09@huaweicloud.com> <20230119184107.GT2948950@paulmck-ThinkPad-P17-Gen-1> <20230120035521.GA319650@paulmck-ThinkPad-P17-Gen-1> <20230120173054.GM2948950@paulmck-ThinkPad-P17-Gen-1> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230120173054.GM2948950@paulmck-ThinkPad-P17-Gen-1> X-Spam-Status: No, score=-1.7 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,SPF_HELO_PASS,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 20, 2023 at 09:30:54AM -0800, Paul E. McKenney wrote: > On Fri, Jan 20, 2023 at 11:14:06AM -0500, Alan Stern wrote: > > My revised patch is below. > > Thank you! Are you OK with my putting this on a not-for-mainline branch > for experimental purposes? Sure, go ahead. Alan