Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759165Ab0FKIae (ORCPT ); Fri, 11 Jun 2010 04:30:34 -0400 Received: from one.firstfloor.org ([213.235.205.2]:43505 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757275Ab0FKIac (ORCPT ); Fri, 11 Jun 2010 04:30:32 -0400 Date: Fri, 11 Jun 2010 10:30:28 +0200 From: Andi Kleen To: Ingo Molnar Cc: Andi Kleen , Peter Zijlstra , Jason Baron , linux-kernel@vger.kernel.org, mathieu.desnoyers@polymtl.ca, hpa@zytor.com, tglx@linutronix.de, rostedt@goodmis.org, roland@redhat.com, rth@redhat.com, mhiramat@redhat.com, fweisbec@gmail.com, avi@redhat.com, davem@davemloft.net, vgoyal@redhat.com, sam@ravnborg.org, Linus Torvalds , Arjan van de Ven Subject: Re: [PATCH 03/13] jump label v9: x86 support Message-ID: <20100611083028.GE6864@basil.fritz.box> References: <1276171930.2077.200.camel@twins> <20100610121440.GA20130@elte.hu> <20100610132616.GA19561@basil.fritz.box> <20100610153742.GA9118@elte.hu> <20100610162453.GF19561@basil.fritz.box> <20100611081256.GA20217@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100611081256.GA20217@elte.hu> User-Agent: Mutt/1.5.17 (2007-11-01) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1318 Lines: 37 > What you are arguing for is a 'bloaty code generator by default' model and > that model sucks. I am arguing for a "non sucky code by default" model. It is widely known that "sucky code by default" sucks already, that is why the big distros made their choice. Anyways luckily the default is all config options so we don't need to agree on this (and the best choice likely varies by workload too) > Possibly, but not without substantiating the rather vague statements you have > made so far. Yes, more data with recent builds is needed for concrete changes. BTW afaik the "icache over everything" model was never really substantiated by all that much data either, just somehow it became dogma. I must say I was a bit burned by doing annotations -- i added unlikely() originally and as far as I can see most unlikely()s are quite useless today because they do nothing the compiler doesn't do already so I would prefer to not repeat that. So my personal preference is actually less annotations over more. -Andi -- ak@linux.intel.com -- Speaking for myself only. -- 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/