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,MAILING_LIST_MULTI,SPF_PASS, T_DKIMWL_WL_MED,USER_IN_DEF_DKIM_WL 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 094FFC28CF6 for ; Wed, 1 Aug 2018 17:19:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AE05620844 for ; Wed, 1 Aug 2018 17:19:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="rRmicLnC" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AE05620844 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405105AbeHATFn (ORCPT ); Wed, 1 Aug 2018 15:05:43 -0400 Received: from mail-it0-f65.google.com ([209.85.214.65]:51208 "EHLO mail-it0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2405086AbeHATFl (ORCPT ); Wed, 1 Aug 2018 15:05:41 -0400 Received: by mail-it0-f65.google.com with SMTP id e14-v6so10757020itf.1 for ; Wed, 01 Aug 2018 10:19:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=qOq4WvBmeZlY85xBt25SnCQUzD/nMxJn7FGpt0yo1Hg=; b=rRmicLnCJGJEUiX6v39D+iUQ9QJPnGd/SzYYkBYkqeY/OvpADhk/vYTq5xk64cMvcs g5YZG+N7oikaLh7i0ZxuT+eQGg67RqgtL+99lUybiZRguZvkvqvgMBWrrud/85+VOqvx PNenZrtqVJHE0NesUstQfV/VQA0QwOqe9t8xWMkIBKNbVgx1dyIGAUR8RofvRPAAY/Oq 8n0r8gSTdhAVSfsFX7HRNmrnDkXAoYETvyb2tWgNCpMb7X5sOw2FiMGeieTkrRB79Rkh SOeCGmAGreOTm/E8HbQOl5Zaf4qoQKsxSLAJNoSDd2ATp5/Oi06J8BozExHBIpTnycg+ Xbxw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=qOq4WvBmeZlY85xBt25SnCQUzD/nMxJn7FGpt0yo1Hg=; b=Fa507h75Njz05Qj3ym5qokFiSC2ldGLl8jOsVY4NtI5Z6kLJJWgrZJMVP3xkla7gch wIypYL4HNEpjRSGxgPfNu+5QAbZgVRvqWQ14hwys59rS3VsJ3a8bvOj6jQTaE4VT0bv/ 3mlT9oJB833Qddd84AwNeWMIOFKpiU8ZsM0mjV5Xrwa1GGcldEdKupS/3Ul121QSHr+r DfAdJ9J+GJQHmzr5ycaKYQzpXsXhUEY8SJ6IGbw1b7H3FVnMQP5T7GcBjptZjAzSKQ+q n7bY2q19428Z8qyf1iJTjjTmPCDE81qRMLG8hBCw8k29L/e0peORlOpGLJyrjQqIC24+ y9Hg== X-Gm-Message-State: AOUpUlFVma1/cbkGszeY7iOkRlg/UfNJCvr1Y6MXVY2hHWb4yydGPdXE tbMuowCdqjkgfkQj8PTX3u7hv/klUwtYReYYSdq3bA== X-Google-Smtp-Source: AAOMgpd/Rlsj2INJ2Y3xelF8qiA9JmxstdN70WNXP5/tVnhi9+Z0d9K9Gdw7rR+TbA7e1Ph+j4DedMhe8ocLFrprEKg= X-Received: by 2002:a24:6f0e:: with SMTP id x14-v6mr4272363itb.139.1533143940871; Wed, 01 Aug 2018 10:19:00 -0700 (PDT) MIME-Version: 1.0 References: <01000164f169bc6b-c73a8353-d7d9-47ec-a782-90aadcb86bfb-000000@email.amazonses.com> <30ee6c72-dc90-275a-8e23-54221f393cb0@virtuozzo.com> <01000164f60f3f12-b1253c6e-ee57-49fc-aed8-0944ab4fd7a2-000000@email.amazonses.com> <01000164f64bd525-be13e04f-18a9-4f7f-a44b-0c0fcec33b71-000000@email.amazonses.com> In-Reply-To: From: Eric Dumazet Date: Wed, 1 Aug 2018 10:18:49 -0700 Message-ID: Subject: Re: SLAB_TYPESAFE_BY_RCU without constructors (was Re: [PATCH v4 13/17] khwasan: add hooks implementation) To: Dmitry Vyukov Cc: Eric Dumazet , Christoph Lameter , Andrey Ryabinin , Linus Torvalds , "Theodore Ts'o" , jack@suse.com, linux-ext4@vger.kernel.org, Greg Kroah-Hartman , Pablo Neira Ayuso , Jozsef Kadlecsik , Florian Westphal , David Miller , netfilter-devel@vger.kernel.org, coreteam@netfilter.org, netdev , Gerrit Renker , dccp@vger.kernel.org, jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com, rodrigo.vivi@intel.com, airlied@linux.ie, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, Alexey Kuznetsov , Hideaki YOSHIFUJI , Ursula Braun , linux-s390@vger.kernel.org, LKML , Andrew Morton , linux-mm , Andrey Konovalov Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Aug 1, 2018 at 9:47 AM Dmitry Vyukov wrote: > > Proving with numbers is required for a claimed performance improvement > at the cost of code degradation/increase. For a win-win change there > is really nothing to prove. You have to _prove_ it is a win-win. It is not sufficient to claim it is a win-win. Sorry, but I do have bugs to take care of.