Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965159AbVKBSME (ORCPT ); Wed, 2 Nov 2005 13:12:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965161AbVKBSME (ORCPT ); Wed, 2 Nov 2005 13:12:04 -0500 Received: from mailout.stusta.mhn.de ([141.84.69.5]:8722 "HELO mailout.stusta.mhn.de") by vger.kernel.org with SMTP id S965159AbVKBSMD (ORCPT ); Wed, 2 Nov 2005 13:12:03 -0500 Date: Wed, 2 Nov 2005 19:12:01 +0100 From: Adrian Bunk To: Dave Jones , Linus Torvalds , Roland Dreier , Andrew Morton , zippel@linux-m68k.org, ak@suse.de, rmk+lkml@arm.linux.org.uk, tony.luck@gmail.com, paolo.ciarrocchi@gmail.com, linux-kernel@vger.kernel.org Subject: Re: New (now current development process) Message-ID: <20051102181201.GB4272@stusta.de> References: <20051031160557.7540cd6a.akpm@osdl.org> <20051031163408.41a266f3.akpm@osdl.org> <52y847abjm.fsf@cisco.com> <52u0eva8yu.fsf@cisco.com> <52ll07a844.fsf@cisco.com> <20051102174852.GB1899@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20051102174852.GB1899@redhat.com> User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1729 Lines: 43 On Wed, Nov 02, 2005 at 12:48:52PM -0500, Dave Jones wrote: > On Wed, Nov 02, 2005 at 07:54:04AM -0800, Linus Torvalds wrote: > > > > For your last suggestion, maybe someone can automate running Andi's > > > bloat-o-meter? I think the hard part is maintaining comparable configs. > > > > Yes. And we should probably make -Os the default. Apparently Fedora > > already does that by just forcibly hacking the Kconfig files. > > (excuse any typos, this wireless connection is god-awful) > We do. We rip out the dependancyon CONFIG_EMBEDDED, and build > with OPTIMISE_FOR_SIZE set. At least we usually do. > Once every so often, we hit something which throws a spanner > in the works, like the "x86-64 doesn't boot any more" problem > that was fixed by the patch that Alexandre posted earlier > this week. > > Most of the time now, when we hit bugs with -Os, it seems to be due > to broken asm constraints in the kernel rather than actual > gcc bugs, but of course, they also occur from time to time, > whereas the same code works just fine with -O2. > I think part of th reason for this is exactly because it > doesn't get a great deal of testing. Is the usage of -Os in Fedora based on actual measurements? > Dave cu Adrian -- "Is there not promise of rain?" Ling Tan asked suddenly out of the darkness. There had been need of rain for many days. "Only a promise," Lao Er said. Pearl S. Buck - Dragon Seed - 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/