From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Paul E. McKenney" Subject: Re: [GIT PULL tools] Linux kernel memory model Date: Mon, 29 Jan 2018 01:54:49 -0800 Message-ID: <20180129095449.GT3741@linux.vnet.ibm.com> References: <20180125093440.GA875@linux.vnet.ibm.com> <20180129065724.ybrdsabvktq7fbqg@gmail.com> Reply-To: paulmck@linux.vnet.ibm.com Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:56032 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751072AbeA2Jyz (ORCPT ); Mon, 29 Jan 2018 04:54:55 -0500 Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w0T9nfnq005776 for ; Mon, 29 Jan 2018 04:54:55 -0500 Received: from e19.ny.us.ibm.com (e19.ny.us.ibm.com [129.33.205.209]) by mx0b-001b2d01.pphosted.com with ESMTP id 2ft007unbj-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 29 Jan 2018 04:54:54 -0500 Received: from localhost by e19.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 29 Jan 2018 04:54:53 -0500 Content-Disposition: inline In-Reply-To: <20180129065724.ybrdsabvktq7fbqg@gmail.com> Sender: linux-arch-owner@vger.kernel.org List-ID: To: Ingo Molnar 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 On Mon, Jan 29, 2018 at 07:57:24AM +0100, Ingo Molnar wrote: > > 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? Oops!!! The branch is lkmm-for-mingo. Please accept my apologies for the implicit maintainer treasure hunt! Thanx, Paul