From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752474AbXCLX4J (ORCPT ); Mon, 12 Mar 2007 19:56:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752463AbXCLX4J (ORCPT ); Mon, 12 Mar 2007 19:56:09 -0400 Received: from colin.muc.de ([193.149.48.1]:4790 "EHLO mail.muc.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752489AbXCLX4H (ORCPT ); Mon, 12 Mar 2007 19:56:07 -0400 Date: 13 Mar 2007 00:56:05 +0100 Date: Tue, 13 Mar 2007 00:56:05 +0100 From: Andi Kleen To: Rusty Russell Cc: lkml - Kernel Mailing List , arjan@infradead.org Subject: Re: CONFIG_REORDER Kconfig help strange sentence. Message-ID: <20070312235605.GA14444@muc.de> References: <1173741484.10618.25.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1173741484.10618.25.camel@localhost.localdomain> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Mar 13, 2007 at 10:18:03AM +1100, Rusty Russell wrote: > OK, this confused me: > > Function reordering (REORDER) [N/y/?] (NEW) ? > > This option enables the toolchain to reorder functions for a more > optimal TLB usage. If you have pretty much any version of binutils, > this can increase your kernel build time by roughly one minute. > > "If you have pretty much any version of binutils"? Huh? > > You mean "This will slow your kernel build by about a minute"? Yes. Lots of sections seem to trigger some quadratic behaviour in ld. It might be fixed in some unreleased CVS version though (not 100% sure) -Andi