Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752198AbZAFKRd (ORCPT ); Tue, 6 Jan 2009 05:17:33 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750792AbZAFKRX (ORCPT ); Tue, 6 Jan 2009 05:17:23 -0500 Received: from mx3.mail.elte.hu ([157.181.1.138]:56497 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750738AbZAFKRX (ORCPT ); Tue, 6 Jan 2009 05:17:23 -0500 Date: Tue, 6 Jan 2009 11:17:10 +0100 From: Ingo Molnar To: Andi Kleen Cc: akpm@linux-foundation.org, x86@kernel.org, linux-kernel@vger.kernel.org, "H. Peter Anvin" Subject: Re: [PATCH] [3/5] Mark complex bitops.h inlines as __always_inline Message-ID: <20090106101710.GA22134@elte.hu> References: <200901051236.281008835@firstfloor.org> <20090104233640.6A7453E6653@basil.firstfloor.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20090104233640.6A7453E6653@basil.firstfloor.org> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 627 Lines: 20 * Andi Kleen wrote: > Hugh Dickins noticed that older gcc versions when the kernel is built > for code size didn't inline some of the bitops. Older GCCs have a whole lot more problems than suboptimal inlining decisions. Your patch is wrong because it prevents a good compiler from doing the right inlining decisions. So why should i apply this? Ingo -- 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/