From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net-next v2 0/2] ovs: introduce arch-specific fast hashing improvements Date: Thu, 12 Dec 2013 16:12:41 -0500 (EST) Message-ID: <20131212.161241.862399141932943486.davem@davemloft.net> References: <1386860946-1621-1-git-send-email-ffusco@redhat.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: jesse@nicira.com, netdev@vger.kernel.org, dev@openvswitch.org, dborkman@redhat.com To: ffusco@redhat.com Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:39797 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751526Ab3LLVMr (ORCPT ); Thu, 12 Dec 2013 16:12:47 -0500 In-Reply-To: <1386860946-1621-1-git-send-email-ffusco@redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Francesco Fusco Date: Thu, 12 Dec 2013 16:09:04 +0100 > We are introducing a fast hash function (see patch1) that can be > used in the context of OpenVSwitch to reduce the hashing footprint > (patch2). For details, please see individual patches! No objections from my side, I'll let the x86 folks get a chance to review this. I can add this optimization on sparc64 chips that have the crc instructions too. I think we'll need to add implementations hash_3words, hash_2words, and hash_1word when we try to take advantage of this in the networking more generally.