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=-2.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no 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 809BFC433DF for ; Fri, 12 Jun 2020 16:03:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4AD54207F7 for ; Fri, 12 Jun 2020 16:03:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="gzTXSx88" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726309AbgFLQDn (ORCPT ); Fri, 12 Jun 2020 12:03:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42256 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726108AbgFLQDm (ORCPT ); Fri, 12 Jun 2020 12:03:42 -0400 Received: from mail-pj1-x1030.google.com (mail-pj1-x1030.google.com [IPv6:2607:f8b0:4864:20::1030]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 846AEC03E96F for ; Fri, 12 Jun 2020 09:03:42 -0700 (PDT) Received: by mail-pj1-x1030.google.com with SMTP id a45so4341650pje.1 for ; Fri, 12 Jun 2020 09:03:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=2PKPk7BQfppfNr7O5EBp2nwpc5uqRbW/+JPiDE2SzHo=; b=gzTXSx88SmeQROG5/rGF7+StSAeA8oieFghvZiWRXbsX0YrIDy6ZLYFtzpEQtqm7QT j9lg6c7oS2UP0q7Iw3M6MOt2bmEB004fbzsC58/BqPpUmVDLElY/NOHMhrQHLjbI11Ju jGCwCQUrcu2XqrbsIx3BMvnm4sJBsZI6iRFVvEiFdcgkcHFleXct5bJ3C7hTuw6/07ZV vcluFltq1gR7/RtS5iW5InpEDUPnHaGihu6oe3MzewquFXcGwB/RBBWmtXXwmjz8iKud 8b7zcMHKQUxRudHvmMtf6PKgmIz4Kv0MVxY9dhZSvQm7AWFAJu20+uDM3OtaRdHSECQQ Lc/Q== 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=2PKPk7BQfppfNr7O5EBp2nwpc5uqRbW/+JPiDE2SzHo=; b=s6xFSL4aMDJvKW08GoWa3mgqRozJx+HFi/3LWZ5O7q0TFyw7XK3RulmbWffa+cq2BL E39KjNIMsQqW6LXrRVX229Cc0N+GjmKksj95ZZeNtToBaDbw/xdedZTTw3kzGokwledI RW7/d/+YUHm96UsSerayY7Aco9Ia1osLCHXfWHyInhQBv7WiEwn9Kxl9K2BkoRxFQWwn /YEqTlUQjYzhFJZ1YklWmqD/AuuzMM51u/3tiyorZUBhYJ+9J8DXEdWp04qmUAOWywSt K3QknSpu/zL7SFiBx7oCYxaEqdgJl4uyaeqB/3+m1Itkf9pg6giAQy+vShg4eMnzcDyI GcNQ== X-Gm-Message-State: AOAM531UofuFsUFHDjAfCXSucVhaWaRYKe7kTje6UDMW5Xo5s0wPU42J dDvgG/XRFsZhYW5J02ibVWU= X-Google-Smtp-Source: ABdhPJwG6QKhN5cTOdTvAF2ijD+ToA4XjdemGeBA1Y9qXvZuwAPSipLJGT8MuHp8NJ/Dd0Udn0cN+A== X-Received: by 2002:a17:90a:e08f:: with SMTP id q15mr14574510pjy.178.1591977821425; Fri, 12 Jun 2020 09:03:41 -0700 (PDT) Received: from localhost ([49.205.221.68]) by smtp.gmail.com with ESMTPSA id h8sm10524409pjb.1.2020.06.12.09.03.40 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Fri, 12 Jun 2020 09:03:40 -0700 (PDT) Date: Fri, 12 Jun 2020 21:33:38 +0530 From: afzal mohammed To: Nicolas Pitre Cc: Russell King - ARM Linux admin , Arnd Bergmann , Linus Walleij , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, Catalin Marinas , Will Deacon Subject: Re: [RFC 0/3] ARM: copy_{from,to}_user() for vmsplit 4g/4g Message-ID: <20200612160338.GA31501@afzalpc> References: <20200612160112.GA27659@afzalpc> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200612160112.GA27659@afzalpc> User-Agent: Mutt/1.9.3 (2018-01-21) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Fri, Jun 12, 2020 at 09:31:12PM +0530, afzal mohammed wrote: > 512 1K 4K 16K 32K 64K 1M > > normal 30 46 89 95 90 85 65 > > uaccess_w_memcpy 28.5 45 85 92 91 85 65 > > w/ series 22 36 72 79 78 75 61 For the sake of completeness all in MB/s, w/ various 'dd' 'bs' sizes. Regards afzal