From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753627AbbJFPhz (ORCPT ); Tue, 6 Oct 2015 11:37:55 -0400 Received: from foss.arm.com ([217.140.101.70]:53011 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752327AbbJFPhx (ORCPT ); Tue, 6 Oct 2015 11:37:53 -0400 Date: Tue, 6 Oct 2015 16:37:49 +0100 From: Catalin Marinas To: Feng Kan Cc: patches@apm.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, philipp.tomsich@theobroma-systems.com, dann.frazier@canonical.com, tim.gardner@canonical.com, craig.magina@canonical.com, soni.trilok.oss@gmail.com Subject: Re: [PATCH V5 0/2] copy to/in/from user optimization Message-ID: <20151006153748.GD3069@e104818-lin.cambridge.arm.com> References: <1443034539-1848-1-git-send-email-fkan@apm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1443034539-1848-1-git-send-email-fkan@apm.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Sep 23, 2015 at 11:55:37AM -0700, Feng Kan wrote: > This coverts all copy in/from/to user file to use the copy template file. > The copy template file is based on the memcpy.S. The first patch converts > the memcpy to use the copy template as well. Overnight trinity test and > 10G iperf was used to test correctness and performance. Noticeable > iperf improvement (~30%) on the receive side. > > V5 Changes: > 1. Switch patch ordering. > 2. Simplify assembly code and use fixed large tags in marco > 3. Fixed indentation issue. > > Feng Kan (2): > arm64: Change memcpy in kernel to use the copy template file > arm64: copy_to-from-in_user optimization using copy template Queued for 4.4 (subject to passing my LTP testing). Thanks. -- Catalin