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=-8.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 C5F29C4332D for ; Fri, 20 Mar 2020 16:59:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9231820724 for ; Fri, 20 Mar 2020 16:59:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=joelfernandes.org header.i=@joelfernandes.org header.b="vnZJZuwA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727238AbgCTQ7x (ORCPT ); Fri, 20 Mar 2020 12:59:53 -0400 Received: from mail-qk1-f194.google.com ([209.85.222.194]:45985 "EHLO mail-qk1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726809AbgCTQ7x (ORCPT ); Fri, 20 Mar 2020 12:59:53 -0400 Received: by mail-qk1-f194.google.com with SMTP id c145so7519558qke.12 for ; Fri, 20 Mar 2020 09:59:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=joelfernandes.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=fy1EKStjgBl7IErqlbsHwxSrZ9X93MqXTOV8yWF9uKI=; b=vnZJZuwAhrkWGHhScUwpwtHGJSwqn5BYJXIRhKTfDelMK24qoC6q7X0LldMJBVRj+r wROnVgB6icc0k829vaBIh2QqIrVP4XgFBAMC5vSNmrsoE6VDugsXWqbJVRD6siDk6VXL p+I//Z7gqcoOReI8+XcCqC7aP7dkgiFYyJMCM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=fy1EKStjgBl7IErqlbsHwxSrZ9X93MqXTOV8yWF9uKI=; b=DaSZIs0xj8cRHrnYxW9VjfFMtXI+0ctQJQnAmR/suv3ROOqdcid+QbcCqzHFBMMsIr D0GwIx0I3pKTMtPq5Nzn5DaMBuD0+7VjzUvpargOZSX21iW9SBfoddOr84h4XlCwlBdG pV5wPBXr2G4ZY6wt1t6AaVm2ynZTReKi1UBsGnuj3j1wXOszW/ZLB5xkdgRxj3Z2V85+ AhKah4CoiGMNRLZ2JKn/iPUxI/qSd5P8UYhw7neTNydCBxVlsfLtDAi1yvT6cJ5izG4+ P6CU8JchfVtqzysOU5uqQ1a594xHu1eIp2cm7GkGfI1xmgn05pZC3cWQ+gXBjOwoHzHo H2dA== X-Gm-Message-State: ANhLgQ0ko0ozXwWZ3z+kOlfKHcpUgMa+tHuFUCeJQP2HSRCvNChowV88 ICfYt5FwMNA9ZJXlEG8WC7OHbg== X-Google-Smtp-Source: ADFU+vtpTXi7ia7zBNQKhkmUrRua//p9mBvFWrsFOpaU3/tF19lLjkU7mw+2GkSxoA8wGqEpA3ISow== X-Received: by 2002:a37:6e06:: with SMTP id j6mr8958597qkc.171.1584723590390; Fri, 20 Mar 2020 09:59:50 -0700 (PDT) Received: from localhost ([2620:15c:6:12:9c46:e0da:efbf:69cc]) by smtp.gmail.com with ESMTPSA id p22sm4340783qki.124.2020.03.20.09.59.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 Mar 2020 09:59:49 -0700 (PDT) Date: Fri, 20 Mar 2020 12:59:48 -0400 From: Joel Fernandes To: Alan Stern Cc: linux-kernel@vger.kernel.org, Akira Yokosawa , Andrea Parri , Boqun Feng , Daniel Lustig , David Howells , Jade Alglave , linux-arch@vger.kernel.org, Luc Maranget , Nicholas Piggin , "Paul E. McKenney" , Peter Zijlstra , Will Deacon Subject: Re: [PATCH 2/3] LKMM: Add litmus test for RCU GP guarantee where reader stores Message-ID: <20200320165948.GB155212@google.com> References: <20200320065552.253696-2-joel@joelfernandes.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.12.2 (2019-09-21) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Mar 20, 2020 at 11:03:30AM -0400, Alan Stern wrote: > On Fri, 20 Mar 2020, Joel Fernandes (Google) wrote: > > > This adds an example for the important RCU grace period guarantee, which > > shows an RCU reader can never span a grace period. > > > > Signed-off-by: Joel Fernandes (Google) > > --- > > .../litmus-tests/RCU+sync+read.litmus | 37 +++++++++++++++++++ > > 1 file changed, 37 insertions(+) > > create mode 100644 tools/memory-model/litmus-tests/RCU+sync+read.litmus > > > > diff --git a/tools/memory-model/litmus-tests/RCU+sync+read.litmus b/tools/memory-model/litmus-tests/RCU+sync+read.litmus > > new file mode 100644 > > index 0000000000000..73557772e2a32 > > --- /dev/null > > +++ b/tools/memory-model/litmus-tests/RCU+sync+read.litmus > > Do these new tests really belong here? I thought we were adding a new > directory under Documentation/ for litmus tests that illustrate parts > of the LKMM or memory-barriers.txt. > > By contrast, the tests under tools/memory-model are merely to show > people what litmus tests look like and how they should be written. I could add it to tools/memory-model/Documentation/ under a new 'examples' directory there. We could also create an 'rcu' directory in tools/memory-model/litmus-tests/ and add these there. Thoughts? thanks, - Joel