From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Woodhouse Subject: Re: [patch 4/4] Configure out IGMP support Date: Fri, 01 Aug 2008 20:41:55 +0100 Message-ID: <1217619715.3454.488.camel@pmac.infradead.org> References: <20080731092703.661994657@free-electrons.com> <20080731093221.565015353@free-electrons.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20080731093221.565015353@free-electrons.com> Sender: linux-embedded-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" To: Thomas Petazzoni Cc: linux-kernel@vger.kernel.org, linux-embedded@vger.kernel.org, michael@free-electrons.com, Matt Mackall , netdev@vger.kernel.org, davem@davemloft.net, akpm@linux-foundation.org On Thu, 2008-07-31 at 11:27 +0200, Thomas Petazzoni wrote: > This patchs adds the CONFIG_IGMP option which allows to remove support > for the Internet Group Management Protocol, used in > multicast. Multicast is not necessarly used by applications, > particularly on embedded devices. As this is a size-reduction option, > it depends on CONFIG_EMBEDDED. It allows to save ~10 kilobytes of > kernel code/data: The config option probably lives in net/Kconfig, not init/Kconfig. And please could you make it clear how this interacts with IP_MULTICAST? We already have a CONFIG_IP_MULTICAST option, for which the help text says "For more people, it's safe to say N'. And I think it defaults to that too. What more does CONFIG_IGMP remove? It's not made clear by the help text. -- dwmw2