From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH 1/2] bonding: fix incorrect transmit queue offset Date: Wed, 23 Feb 2011 15:54:51 -0800 (PST) Message-ID: <20110223.155451.70202591.davem@davemloft.net> References: <20110223230844.GA16476@linuxace.com> <20110223.151357.245408084.davem@davemloft.net> <1298504269.2211.503.camel@localhost> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: kernel@linuxace.com, andy@greyhouse.net, netdev@vger.kernel.org, fubar@us.ibm.com To: bhutchings@solarflare.com Return-path: Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:60194 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753289Ab1BWXyP (ORCPT ); Wed, 23 Feb 2011 18:54:15 -0500 In-Reply-To: <1298504269.2211.503.camel@localhost> Sender: netdev-owner@vger.kernel.org List-ID: From: Ben Hutchings Date: Wed, 23 Feb 2011 23:37:49 +0000 > On Wed, 2011-02-23 at 15:13 -0800, David Miller wrote: >> From: Phil Oester >> Date: Wed, 23 Feb 2011 15:08:44 -0800 >> >> > On Wed, Feb 23, 2011 at 02:42:49PM -0500, Andy Gospodarek wrote: >> >> + * destination queue. Using a helper function skips the a call to >> > >> > s/the a/a/ or s/the a/the/ >> > >> >> + while (txq >= dev->real_num_tx_queues) { >> >> + /* let the user know if we do not have enough tx queues */ >> >> + if (net_ratelimit()) >> >> + pr_warning("%s selects invalid tx queue %d. Consider" >> >> + " setting module option tx_queues > %d.", >> >> + dev->name, txq, dev->real_num_tx_queues); >> >> + txq -= dev->real_num_tx_queues; >> >> + } >> > >> > Think this would be better as a WARN_ONCE, as otherwise syslog will still >> > get flooded with this - even when ratelimited. See get_rps_cpu in >> > net/core/dev.c as an example.o >> >> Agreed. > > This shouldn't WARN at all. It is perfectly valid (though non-optimal) > to have different numbers of queues on two different multiqueue devices. That's also a good point.