From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266914AbUHTTLQ (ORCPT ); Fri, 20 Aug 2004 15:11:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S268678AbUHTTID (ORCPT ); Fri, 20 Aug 2004 15:08:03 -0400 Received: from zeus.kernel.org ([204.152.189.113]:36506 "EHLO zeus.kernel.org") by vger.kernel.org with ESMTP id S268683AbUHTTFm (ORCPT ); Fri, 20 Aug 2004 15:05:42 -0400 Date: Fri, 20 Aug 2004 11:53:51 -0600 From: martin rumori To: Lee Revell Cc: jackit-devel , Ingo Molnar , linux-kernel Subject: Re: problems with volunteer preempt patch WAS: little NPTL SCHED_FIFO test program Message-ID: <20040820175351.GA2302@amadora.tejo> Mail-Followup-To: Lee Revell , jackit-devel , Ingo Molnar , linux-kernel References: <200408172102.00964.pnambic@unu.nu> <20040818004633.35eb6501@mango.fruits.de> <200408180100.04955.pnambic@unu.nu> <20040818023546.03e79fc4@mango.fruits.de> <1092794828.813.49.camel@krustophenia.net> <20040818050708.54a27a7e@mango.fruits.de> <1092987523.10063.62.camel@krustophenia.net> <20040820092042.GA2496@amadora.tejo> <1092994979.10063.80.camel@krustophenia.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1092994979.10063.80.camel@krustophenia.net> User-Agent: Mutt/1.5.6+20040803i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Aug 20, 2004 at 05:42:59AM -0400, Lee Revell wrote: > On Fri, 2004-08-20 at 05:20, martin rumori wrote: > > tried to compile 2.6.8.1 with volunteer-preempt-P5 (latest), but > > wasn't able to boot into the new kernel. shows some lines of ACPI.... > I think you have an off-by-one error. The latest version is -P4. o.k., you're right. this time it's really -P5 :-) > Try the 'noacpi' boot option. Also, try disabling all power > management. I know this is not realistic for a laptop, it's just for > debugging purposes. tried it with the options, no success. built a kernel without powermanagement and without cpu speedstep at all. exactly the same behavior, directly after unpacking the kernel at the beginning of startup: 0 MB highmem 511 mb lowmem available ACPI RSDP ..... ..... ACPI build 1 zone list Detected Processor... Memory ... ... Checking if processor honors the WP bit even in supervisor mode... ok. --- that's it. freezes for 1-2 seconds after this last message, then reboots. tried to write down these contents of the screen, as far as i could recognize them during the short period of time. i am wondering especially about the ACPI messages, as ACPI is completely switched off now. second (minor) issue: when having enabled CONFIG_PREEMPT_VOLUNTARY(=y) but not CONFIG_PREEMPT_TIMING(=n), i get the following when linking: LD init/built-in.o LD .tmp_vmlinux1 arch/i386/kernel/built-in.o(.text+0x2da1): In function `do_nmi': : undefined reference to `__trace' arch/i386/kernel/built-in.o(.text+0x342c): In function `do_IRQ': : undefined reference to `__trace' arch/i386/mm/built-in.o(.text+0x705): In function `do_page_fault': : undefined reference to `__trace' make: *** [.tmp_vmlinux1] Error 1 maybe latency.o is not included when linking without CONFIG_PREEMPT_TIMING? bests, martin