Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752285AbbHUWAT (ORCPT ); Fri, 21 Aug 2015 18:00:19 -0400 Received: from mail-pa0-f51.google.com ([209.85.220.51]:36367 "EHLO mail-pa0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751683AbbHUWAR (ORCPT ); Fri, 21 Aug 2015 18:00:17 -0400 From: Feng Kan To: 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 Cc: Feng Kan Subject: [PATCH V4 0/2] arm64: copy to/in/from user optimization Date: Fri, 21 Aug 2015 15:00:58 -0700 Message-Id: <1440194458-4837-1-git-send-email-fkan@apm.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1314 Lines: 31 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 second 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. V4 Change: - base the copy template file on the existing memcpy.S - convert copy*.s to user copy template - conver the memcpy to use the copy template. Feng Kan (2): arm64: copy_to-from-in_user optimization using copy template arm64: Change memcpy in kernel to use the copy template file arch/arm64/lib/copy_from_user.S | 78 +++++++++------- arch/arm64/lib/copy_in_user.S | 66 ++++++++------ arch/arm64/lib/copy_template.S | 196 ++++++++++++++++++++++++++++++++++++++++ arch/arm64/lib/copy_to_user.S | 66 ++++++++------ arch/arm64/lib/memcpy.S | 179 ++++++------------------------------ 5 files changed, 340 insertions(+), 245 deletions(-) create mode 100644 arch/arm64/lib/copy_template.S -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/