Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755387AbZAIT0Z (ORCPT ); Fri, 9 Jan 2009 14:26:25 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752986AbZAIT0O (ORCPT ); Fri, 9 Jan 2009 14:26:14 -0500 Received: from one.firstfloor.org ([213.235.205.2]:40474 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752344AbZAIT0N (ORCPT ); Fri, 9 Jan 2009 14:26:13 -0500 Date: Fri, 9 Jan 2009 20:40:26 +0100 From: Andi Kleen To: Richard Guenther Cc: Andi Kleen , Linus Torvalds , Matthew Wilcox , Dirk Hohndel , "H. Peter Anvin" , Ingo Molnar , jim owens , Chris Mason , Peter Zijlstra , Steven Rostedt , paulmck@linux.vnet.ibm.com, Gregory Haskins , Andrew Morton , Linux Kernel Mailing List , linux-fsdevel , linux-btrfs , Thomas Gleixner , Nick Piggin , Peter Morreale , Sven Dietrich , jh@suse.cz Subject: Re: [patch] measurements, numbers about CONFIG_OPTIMIZE_INLINING=y impact Message-ID: <20090109194026.GM26290@one.firstfloor.org> References: <20090109084620.3c711aad@infradead.org> <20090109172011.GD26290@one.firstfloor.org> <20090109172801.GC6936@parisc-linux.org> <20090109174719.GG26290@one.firstfloor.org> <20090109173914.GD6936@parisc-linux.org> <20090109181952.GI26290@one.firstfloor.org> <84fc9c000901091059v65265413wda053d3ce5b0d17a@mail.gmail.com> <20090109192158.GK26290@one.firstfloor.org> <84fc9c000901091110n2f5565b7mecf9acec35cf5a0@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <84fc9c000901091110n2f5565b7mecf9acec35cf5a0@mail.gmail.com> User-Agent: Mutt/1.4.2.1i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 812 Lines: 25 On Fri, Jan 09, 2009 at 08:10:20PM +0100, Richard Guenther wrote: > On Fri, Jan 9, 2009 at 8:21 PM, Andi Kleen wrote: > >> GCC 4.3 should be good in compiling the > >> kernel with default -Os settings. > > > > It's unfortunately not. It doesn't inline a lot of simple asm() inlines > > for example. > > Reading Ingos posting with the actual numbers states the opposite. Hugh had some numbers upto 4.4.0 20090102 in http://thread.gmane.org/gmane.linux.kernel/775254/focus=777231 which demonstrated the problem. -Andi -- ak@linux.intel.com -- 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/