Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753271AbYHQJbi (ORCPT ); Sun, 17 Aug 2008 05:31:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752109AbYHQJba (ORCPT ); Sun, 17 Aug 2008 05:31:30 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:45666 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751669AbYHQJb3 (ORCPT ); Sun, 17 Aug 2008 05:31:29 -0400 Date: Sun, 17 Aug 2008 11:31:15 +0200 From: Ingo Molnar To: Johannes Weiner Cc: Alexey Dobriyan , torvalds@osdl.org, akpm@osdl.org, linux-kernel@vger.kernel.org, Peter Zijlstra Subject: Re: [PATCH] De-macro spin_trylock_irq, spin_trylock_irqsave, write_trylock_irqsave Message-ID: <20080817093114.GA21303@elte.hu> References: <20080816095951.GA19926@martell.zuzino.mipt.ru> <20080816134600.GC20652@elte.hu> <20080816210439.GB5151@martell.zuzino.mipt.ru> <87pro8psk1.fsf@skyscraper.fehenstaub.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87pro8psk1.fsf@skyscraper.fehenstaub.lan> 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: 924 Lines: 23 * Johannes Weiner wrote: > >> (but it would also be hugely invasive, with not much upside with > >> tons of downside like years of migration fallout and having to > >> rewrite hundreds of kernel hacking books ;-) ) > > > > I want my money back for scheduler chapter from "Understanding the > > Linux Kernel"! > > I agree that this argument of Ingo's is not a very good one... ;) i see the smiley, but still - there's a huge difference between the "pain" caused by a much better scheduler [ hey, did you expect me to say anything else? ;-) ] and a rather arbitrary value->pointer parametering change to a core API that is used _everywhere_. 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/