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=-8.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT 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 D3586C4360F for ; Tue, 2 Apr 2019 14:49:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A0FEB20883 for ; Tue, 2 Apr 2019 14:49:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amarulasolutions.com header.i=@amarulasolutions.com header.b="BdLifG04" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731883AbfDBOtV (ORCPT ); Tue, 2 Apr 2019 10:49:21 -0400 Received: from mail-wr1-f67.google.com ([209.85.221.67]:33964 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731783AbfDBOtV (ORCPT ); Tue, 2 Apr 2019 10:49:21 -0400 Received: by mail-wr1-f67.google.com with SMTP id p10so17067167wrq.1 for ; Tue, 02 Apr 2019 07:49:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=KKpqAZk8ZPLTi+w4by/A8Sx+wgJCRI5IaCwsZ3rsIJ0=; b=BdLifG04va0ZcioS+cyiaj6h5/KXx1W/ZLC1O+Brt3fJ/cYFYnGCNkfWa/RDPYAXq8 Ao9mB/JDrAEJMlpvz4hQJNG3Sgx7ggZC9ln7CtWmV+6EDDYY+N2RaO2jKioHd4DdEvl5 wL/ENPXHSnnZAqB1jasENfnP5OtUDgXFgewK8= 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=KKpqAZk8ZPLTi+w4by/A8Sx+wgJCRI5IaCwsZ3rsIJ0=; b=mDgHctURUtyNVu87zsq1qPO39yWX2iZ6Hfd2vFjfdjO+Xt4iZFNQ0C73qBi6zEf1Ob FbzgCjEI7qivkepT1DDOz4XJQ55ageD5rcIbRo0dG2F44oxbmk9fL19CeXlORHj3ylOM ww6WhrdJXraEvQvJzZrklC5WEPnbBVSg1ihdytZUcGdFxevIPeL8VZbUjeks28vgYiLm n5ikQMHhMoiIge7vpXmqfP8MMOvJK9GhXgRqM9eqKBOtcWv4Npe73GwGN84/L9+zCmA5 AO44gRPGvuhbnFsDAkRIxq2/Q/kmXh6HdXXJBn4e5UFf++xD568z/Amchw5URqqGlu5g 0nFg== X-Gm-Message-State: APjAAAWMMJUg9DYV38k91IP1YnVyTTm4X58H6oaHyJsoIRR9fIGYwVHt u/Iu8eWXyxL78EC71it+ZgEwLQ== X-Google-Smtp-Source: APXvYqzFG/gi2VTtm6uozMfLN1t0+Catgnql8boWnrGWwJ6AioTthn1cPup0HEPMaNbtcQt6WRghHw== X-Received: by 2002:a5d:698b:: with SMTP id g11mr3728077wru.65.1554216559327; Tue, 02 Apr 2019 07:49:19 -0700 (PDT) Received: from andrea (86.100.broadband17.iol.cz. [109.80.100.86]) by smtp.gmail.com with ESMTPSA id f11sm15267916wrm.30.2019.04.02.07.49.17 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 02 Apr 2019 07:49:17 -0700 (PDT) Date: Tue, 2 Apr 2019 16:49:11 +0200 From: Andrea Parri To: "Paul E. McKenney" Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, mingo@kernel.org, stern@rowland.harvard.edu, will.deacon@arm.com, peterz@infradead.org, boqun.feng@gmail.com, npiggin@gmail.com, dhowells@redhat.com, j.alglave@ucl.ac.uk, luc.maranget@inria.fr, akiyks@gmail.com Subject: Re: [PATCH tip/core/rcu 08/21] tools/memory-model: Add support for synchronize_srcu_expedited() Message-ID: <20190402144911.GA10044@andrea> References: <20190326234114.GA23843@linux.ibm.com> <20190326234133.24962-8-paulmck@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190326234133.24962-8-paulmck@linux.ibm.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Mar 26, 2019 at 04:41:20PM -0700, Paul E. McKenney wrote: > Given that synchronize_rcu_expedited() is supported, this commit adds > support for synchronize_srcu_expedited(). > > Signed-off-by: Paul E. McKenney > --- > tools/memory-model/linux-kernel.def | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/tools/memory-model/linux-kernel.def b/tools/memory-model/linux-kernel.def > index 0c3f0ef486f4..551eeaa389d4 100644 > --- a/tools/memory-model/linux-kernel.def > +++ b/tools/memory-model/linux-kernel.def > @@ -51,6 +51,7 @@ synchronize_rcu_expedited() { __fence{sync-rcu}; } > srcu_read_lock(X) __srcu{srcu-lock}(X) > srcu_read_unlock(X,Y) { __srcu{srcu-unlock}(X,Y); } > synchronize_srcu(X) { __srcu{sync-srcu}(X); } > +synchronize_srcu_expedited(X) { __srcu{sync-srcu}(X); } This and the other patches from the series do not apply to "tip/core/rcu" (from the Subject), but this seems straightforward enough: Acked-by: Andrea Parri Andrea > > // Atomic > atomic_read(X) READ_ONCE(*X) > -- > 2.17.1 >