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=-7.6 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_PASS, T_DKIMWL_WL_HIGH,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 D668DC04A6B for ; Mon, 6 May 2019 19:43:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A9DDE2087F for ; Mon, 6 May 2019 19:43:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1557171826; bh=fkykrPqq1AyG9f/lspkH1gX1Wp1cjpn28NIiHvjTAuI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=rWchirfWulxYE2uSBHfSp4GTIjHWui/yNLqz19feLtbxl+m/xlZUPW4pfCNuPboIv TnLDvwF+zfuQh/IWZXbw7Sl+ZfctBDj4leDBfytuqPgvLfWMEdGLaF6pHUw/TfDiKv spGivbGu1EM+RGg2OqQvXK4PDmYAvjJ4we7n8JEs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726608AbfEFTnp (ORCPT ); Mon, 6 May 2019 15:43:45 -0400 Received: from mail-wr1-f66.google.com ([209.85.221.66]:34988 "EHLO mail-wr1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726175AbfEFTnp (ORCPT ); Mon, 6 May 2019 15:43:45 -0400 Received: by mail-wr1-f66.google.com with SMTP id w12so5378725wrp.2 for ; Mon, 06 May 2019 12:43:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-disposition:content-transfer-encoding:in-reply-to :user-agent; bh=hdQK4zeXJdKAqwIz6ylcK7HoOO8NEuJPBT9FxY26xd8=; b=Mco/GNEDGXkBn81HrESqzeOpPljTOGYV6OeTxdLuWuJ21abaW14Lt2Dl1pyLFAfphJ JDv0VHonxXAAuOmGd8iJrgwQvV1CbBCgciz5SLYDiolZVLPg1/gUDhm06zF/eMR32OrZ JFXp7sxmCnGKvl/rYYgdUOnQESgec+Kv7CnNglfWpveLcH0Z6sPqv5RpO59q9ayq2R/9 3OCeOrf6F5QXmf4Y+W3rYHp8xY1mckbQDwkkIqGR9yPPDd1m7VoBnfK0kUBjNI7ErH8L 5EM8yymmXjT5k9LyDfNkwrQ4EXen+tJjXIu50/cWyl6IJpYRtqct8yRndJpO8CU+y5Sv Fwzw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :references:mime-version:content-disposition :content-transfer-encoding:in-reply-to:user-agent; bh=hdQK4zeXJdKAqwIz6ylcK7HoOO8NEuJPBT9FxY26xd8=; b=pAYXY9IUqLTRDzPYARUUc4RxURLyQ+HjRYP2lSC4SeETAB4a7zg3SYRmz1Of3zJIQP IYD2pX1iyOiZdc3hUFoqAW3ZGJbS6e8nyGb/pu4JmWHNbyI3S9vSvXVLz7ePcsh2tAdv EkKnJLHv74a5qrmAEQwBd3N1InaA4m2wCJ6y58g5SDzEv+VmPuGY5j5tmHf7frfDRvlO Fm7aoMKDIh5lg5A/peCiSdmFRzpVzYuptJVaIK8I3P4kEQePo+wCOZsTiVIjnx+k3xz3 reiUH8BlgKrcGim6vtEy9QWggO8otOI3GbFuCQO5863ihQwReaWQL4dYt+7H6p9Uxcjj +HbA== X-Gm-Message-State: APjAAAV2drBS0hZtB+y/EILJd8sbc5FkrwxNeZgcO1T/NLNfaKz8/0V1 EXEbXHJEwTtBI0DGYJb5zZo= X-Google-Smtp-Source: APXvYqzc79vDyEk4ZenL4HoBaD6mvQFsQwD9nqX0lKa4VMK7ZBUlfZ50ZmWuc+CDMEh5d8gCZ9JuIQ== X-Received: by 2002:a5d:434c:: with SMTP id u12mr13913404wrr.92.1557171822968; Mon, 06 May 2019 12:43:42 -0700 (PDT) Received: from gmail.com (2E8B0CD5.catv.pool.telekom.hu. [46.139.12.213]) by smtp.gmail.com with ESMTPSA id j10sm33590971wrb.0.2019.05.06.12.43.41 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Mon, 06 May 2019 12:43:41 -0700 (PDT) Date: Mon, 6 May 2019 21:43:39 +0200 From: Ingo Molnar To: Waiman Long Cc: Linus Torvalds , linux-kernel@vger.kernel.org, Peter Zijlstra , Will Deacon , Thomas Gleixner , Andrew Morton Subject: Re: [GIT PULL] locking changes for v5.2 Message-ID: <20190506194339.GA20938@gmail.com> References: <20190506085014.GA130963@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Waiman Long wrote: > On 5/6/19 4:50 AM, Ingo Molnar wrote: > > Linus, > > > > Please pull the latest locking-core-for-linus git tree from: > > > > git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git locking-core-for-linus > > > > # HEAD: d671002be6bdd7f77a771e23bf3e95d1f16775e6 locking/lockdep: Remove unnecessary unlikely() > > > > [ Dependency note: this tree depends on commits also in the RCU tree, > > please disregard this pull request if you weren't able to pull the RCU > > tree for some reason. ] > > > > Here are the locking changes in this cycle: > > > > - rwsem unification and simpler micro-optimizations to prepare for more > > intrusive (and more lucrative) scalability improvements in v5.3 > > (Waiman Long) > > Is it possible to pull in also my "locking/rwsem: Prevent decrement of > reader count before  increment" patch for 5.2? The rests can wait until 5.3. Sure - how close is this to a straight: git revert 70800c3c0cc5 ? If it's close enough then please resubmit this as a 'Revert "..."' patch, which I'll queue up in locking/urgent. It also is a performance, not a correctness fix, and should probably get a Cc: stable as well, right? In any case it doesn't directly affect the locking/core bits pull request for Linus, 70800c3c0cc5 is already upstream. Thanks, Ingo