Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267285AbUJSRbr (ORCPT ); Tue, 19 Oct 2004 13:31:47 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S269630AbUJSR2U (ORCPT ); Tue, 19 Oct 2004 13:28:20 -0400 Received: from dfw-gate3.raytheon.com ([199.46.199.232]:13937 "EHLO dfw-gate3.raytheon.com") by vger.kernel.org with ESMTP id S267285AbUJSRRT (ORCPT ); Tue, 19 Oct 2004 13:17:19 -0400 Subject: Re: [patch] Real-Time Preemption, -RT-2.6.9-rc4-mm1-U6 To: Ingo Molnar Cc: Bill Huey , Adam Heath , "K.R. Foley" , linux-kernel@vger.kernel.org, Florian Schmidt , Fernando Pablo Lopez-Lezcano , Lee Revell , Rui Nuno Capela , Thomas Gleixner , Michal Schmidt X-Mailer: Lotus Notes Release 5.0.8 June 18, 2001 Message-ID: From: Mark_H_Johnson@raytheon.com Date: Tue, 19 Oct 2004 12:14:47 -0500 X-MIMETrack: Serialize by Router on RTSHOU-DS01/RTS/Raytheon/US(Release 6.5.2|June 01, 2004) at 10/19/2004 12:14:51 PM MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII X-SPAM: 0.00 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1609 Lines: 49 >i have released the -U6 Real-Time Preemption patch: > > http://redhat.com/~mingo/realtime-preempt/realtime-preempt-2.6.9-rc4-mm1-U6 Booted to single user and was able to get some network operations going with this version (w/ previously mentioned update). However, at the step where I start CUPS, I got a number of traces on the display referring to parport_pc related function calls [but I don't use a parallel printer...]. It ended with: NMI Watchdog detected LOCKUP on CPU1, eip c0139b22, registers: [not sure you want the all the details, I'll put a few key items in and can try to reproduce on request] Modules linked in: parport_pc lp parport autofs4 sunrpc 8139too mii dm_mod uhci_hcd ext3 jbd CPU: 1 ... EIP is at sub_preempt_count+0x82/0xa0 ... Process ksoftirqd/1 (pid:5 ...) Pid: 1825, comm: modprobe ... CPU: 0 ... EIP is at flush_tlb_others+0x90/0xf0 (stack trace shows sys_init_module, parport_pc_init, ... parport_announce_port, mcount, parport_pc_probe_port, parport_announce_port, __mcount, parport_daisy_init, ... parport_wait_event, down_write_interruptible, error_code, show_stack, etc.) preempt count: 00010006 ... console shuts up... Alt-Sysrq keys are recognized (displays command) but don't display any data. Will send whatever made it into to the system log shortly. --Mark H Johnson - 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/