Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263295AbTF3Xsi (ORCPT ); Mon, 30 Jun 2003 19:48:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263311AbTF3Xsi (ORCPT ); Mon, 30 Jun 2003 19:48:38 -0400 Received: from holly.csn.ul.ie ([136.201.105.4]:41412 "EHLO holly.csn.ul.ie") by vger.kernel.org with ESMTP id S263295AbTF3Xsg (ORCPT ); Mon, 30 Jun 2003 19:48:36 -0400 Date: Tue, 1 Jul 2003 01:02:57 +0100 (IST) From: Mel Gorman X-X-Sender: mel@skynet To: Zwane Mwaikambo Cc: Linux Kernel Mailing List Subject: Re: [BUG] 2.5.73 Scheduling while atomic with taskfile IO and high memory In-Reply-To: Message-ID: References: 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 Content-Length: 1189 Lines: 35 On Mon, 30 Jun 2003, Zwane Mwaikambo wrote: > Could you try selecting your specific IDE chipset (or all), it doesn't > look like PIO is getting along famously with various other bits. I also > noticed TCQ, do you have any TCQ capable IDE devices? > Tried many things, in no particular order o PCI chipsets disabled o Disabled TCQ (device doesn't support it anyway) o DMA disabled and ide_setup_dma() stub function added so it'll compile o PCI Generic chipset support enabled o Intel PIIX chipset support enabled o All chipset under the sun supported All come up with the same errors. The following workarounds let it boot o Removing inc_preempt_count() and dec_preempt_count() from kmap_atomic() and kunmap_atomic() o Disabling high memory o Disabling taskfile IO A quickie patch to sched.c shows that preempt_count() keeps incrementing for each time the sleeping while atomic message is printed by the cpu_idle() thread -- Mel Gorman - 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/