Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755429Ab3H1VqZ (ORCPT ); Wed, 28 Aug 2013 17:46:25 -0400 Received: from shards.monkeyblade.net ([149.20.54.216]:50172 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753024Ab3H1VqY (ORCPT ); Wed, 28 Aug 2013 17:46:24 -0400 Date: Wed, 28 Aug 2013 17:46:22 -0400 (EDT) Message-Id: <20130828.174622.268609863849057534.davem@davemloft.net> To: eliezer.tamir@linux.intel.com Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, eliezer@tamir.org.il Subject: Re: [PATCH net] net: add cpu_relax to busy poll loop From: David Miller In-Reply-To: <20130825072346.31655.84970.stgit@ladj378.jer.intel.com> References: <20130825072346.31655.84970.stgit@ladj378.jer.intel.com> X-Mailer: Mew version 6.5 on Emacs 24.1 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.1 (shards.monkeyblade.net [0.0.0.0]); Wed, 28 Aug 2013 14:46:24 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 680 Lines: 18 From: Eliezer Tamir Date: Sun, 25 Aug 2013 10:23:46 +0300 > Add a cpu_relaxt to sk_busy_loop. > > Julie Cummings reported performance issues when hyperthreading is on. > Arjan van de Ven observed that we should have a cpu_relax() in the > busy poll loop. > > Reported-by: Julie Cummings > Signed-off-by: Eliezer Tamir Applied, thank you. -- 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/