From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764933AbXKOSHl (ORCPT ); Thu, 15 Nov 2007 13:07:41 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758061AbXKOSHd (ORCPT ); Thu, 15 Nov 2007 13:07:33 -0500 Received: from www.tglx.de ([62.245.132.106]:58470 "EHLO www.tglx.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757613AbXKOSHc (ORCPT ); Thu, 15 Nov 2007 13:07:32 -0500 Date: Thu, 15 Nov 2007 19:07:11 +0100 (CET) From: Thomas Gleixner To: Sam Ravnborg cc: Adrian Bunk , mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org Subject: Re: [2.6 patch] x86: revert X86_HT semantics change In-Reply-To: <20071115180436.GA23517@uranus.ravnborg.org> Message-ID: References: <20071115161703.GR4250@stusta.de> <20071115180436.GA23517@uranus.ravnborg.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 15 Nov 2007, Sam Ravnborg wrote: > On Thu, Nov 15, 2007 at 05:17:03PM +0100, Adrian Bunk wrote: > > The x86 unification resulted in CONFIG_X86_HT no longer being > > set if (X86_32 && MK8). > Yup - my bad. I wrongly assumed MK8 was an X86_64 thing. > > Thanks for fixing this. > > > > After grep'ing through the tree I think the problem is that different > > places have different assumptions about the semantics of CONFIG_X86_HT, > > either: > > - hyperthreading or > > - multicore > > and the SCHED_SMT and SCHED_MC dependencies are just one of the > > symptoms. > > > > This should be sorted out properly, but until then we should keep the > > 2.6.23 status quo. > > > > Signed-off-by: Adrian Bunk > Acked-by: Sam Ravnborg > > I assume Thomas & Co will forward the patch. After looking what does what and fixing it. Right now this patch is not a 1:1 replacement of the .23 status quo, as it now makes SCHED_SMT and SCHED_HT depend on !MK8 for 64bit. tglx