From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751423AbeA2G5b (ORCPT ); Mon, 29 Jan 2018 01:57:31 -0500 Received: from mail-wm0-f65.google.com ([74.125.82.65]:55609 "EHLO mail-wm0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751127AbeA2G52 (ORCPT ); Mon, 29 Jan 2018 01:57:28 -0500 X-Google-Smtp-Source: AH8x225Sv8SANsokC3pF43DNnhPd5Z9Ftpwu3/Qh9x8aeDBusrfWMo5j2wZuKp/IhCunKWaZJIfuog== Date: Mon, 29 Jan 2018 07:57:24 +0100 From: Ingo Molnar To: "Paul E. McKenney" Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, stern@rowland.harvard.edu, parri.andrea@gmail.com, j.alglave@ucl.ac.uk, luc.maranget@inria.fr, boqun.feng@gmail.com, will.deacon@arm.com, peterz@infradead.org, npiggin@gmail.com, dhowells@redhat.com, elena.reshetova@intel.com, mhocko@suse.com, akiyks@gmail.com, Thomas Gleixner , Peter Zijlstra Subject: Re: [GIT PULL tools] Linux kernel memory model Message-ID: <20180129065724.ybrdsabvktq7fbqg@gmail.com> References: <20180125093440.GA875@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180125093440.GA875@linux.vnet.ibm.com> User-Agent: NeoMutt/20170609 (1.8.3) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org hi Paul, * Paul E. McKenney wrote: > Hello, Ingo, > > This pull request contains a single commit that adds a memory model to > the tools directory. This memory model can (roughly speaking) be thought > of as an automated version of memory-barriers.txt. It is written in the > "cat" language, which is executable by the externally provided "herd7" > simulator, which exhaustively explores the state space of small litmus > tests. > > This memory model is accompanied by extensive documentation on its use > and its design. Two versions have been sent to LKML and feedback > incorporated: > > 1. http://lkml.kernel.org/r/20171113184031.GA26302@linux.vnet.ibm.com > 2. http://lkml.kernel.org/r/20180119035855.GA29296@linux.vnet.ibm.com > > This model has been presented and demoed at a number of Linux gatherings, > including the 2016 LinuxCon EU, the 2016 Linux Plumbers Conference, > the 2016 Linux Kernel Summit, the 2017 linux.conf.au, and the 2017 Linux > Plumbers Conference, which featured a workshop helping a number of Linux > kernel hackers install and use the tool. > > This memory model has matured to the point where it would be good to include > it in the Linux kernel, for example, to allow it to track changes as new > hardware and use cases are added. We expect the rate of change to be similar > to that of Documentation/memory-barriers.txt. > > This memory model is available in the git repository at: > > git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git > > for you to fetch changes up to 1c27b644c0fdbc61e113b8faee14baeb8df32486: > > Automate memory-barriers.txt; provide Linux-kernel memory model (2018-01-24 20:53:49 -0800) Looks good to me, but the commit is not in the master branch of your tree, which branch should I pull? Thanks, Ingo