Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750961AbVK2JcI (ORCPT ); Tue, 29 Nov 2005 04:32:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750995AbVK2JcH (ORCPT ); Tue, 29 Nov 2005 04:32:07 -0500 Received: from mx2.mail.elte.hu ([157.181.151.9]:8901 "EHLO mx2.mail.elte.hu") by vger.kernel.org with ESMTP id S1750961AbVK2JcG (ORCPT ); Tue, 29 Nov 2005 04:32:06 -0500 Date: Tue, 29 Nov 2005 10:32:31 +0100 From: Ingo Molnar To: Lee Revell Cc: Thomas Gleixner , linux-kernel , david singleton Subject: Re: 2.6.14-rt15: cannot build with !PREEMPT_RT Message-ID: <20051129093231.GA5028@elte.hu> References: <1133031912.5904.12.camel@mindpipe> <1133034406.32542.308.camel@tglx.tec.linutronix.de> <20051127123052.GA22807@elte.hu> <1133141224.4909.1.camel@mindpipe> <20051128114852.GA3391@elte.hu> <1133189789.5228.7.camel@mindpipe> <20051128160052.GA29540@elte.hu> <1133217651.4678.2.camel@mindpipe> <1133230103.5640.0.camel@mindpipe> <20051129072922.GA21696@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20051129072922.GA21696@elte.hu> User-Agent: Mutt/1.4.2.1i 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=ALL_TRUSTED,AWL autolearn=no SpamAssassin version=3.0.3 -2.8 ALL_TRUSTED Did not pass through any untrusted hosts 1.3 AWL AWL: From: address is in the auto white-list X-ELTE-VirusStatus: clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1117 Lines: 30 * Ingo Molnar wrote: > * Lee Revell wrote: > > > On Mon, 2005-11-28 at 17:40 -0500, Lee Revell wrote: > > > 2.6.11-RT-V0.7.40-04 works > > > > and 2.6.12-RT-V0.7.51-28 does not. > > thanks. I have further narrowed it down from this point: your .config > breaks from the 51-01 to the 51-02 kernel (on my testbox). ok, fixed this one, it was the CURRENT_PTR optimization on UP that broke if 4K stacks were enabled. (i disabled the optimization for now) But interestingly, your .config unearthed 2 other serious bugs (!) as well: the spin_unlock_irq() upon printk was incorrect for !PREEMPT_RT, and there was an assert introduced by the get-rid-of-bitlocks ext3 patches which was invalid on UP && !PREEMPT_RT. We had these bugs for quite some time. I've released -rt21 with these fixes, does it work better for you? 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/