Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759414AbXEKDW7 (ORCPT ); Thu, 10 May 2007 23:22:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757576AbXEKDWw (ORCPT ); Thu, 10 May 2007 23:22:52 -0400 Received: from h80ad2262.async.vt.edu ([128.173.34.98]:52679 "EHLO h80ad2262.async.vt.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751473AbXEKDWv (ORCPT ); Thu, 10 May 2007 23:22:51 -0400 X-Greylist: delayed 1766 seconds by postgrey-1.27 at vger.kernel.org; Thu, 10 May 2007 23:22:51 EDT X-Mailer: exmh version 2.7.2 01/07/2005 with nmh-1.2 To: Andrew Morton , "John W. Linville" Cc: linux-kernel@vger.kernel.org, "James P. Ketrenos" Subject: Re: 2.6.21-mm2 - 100% CPU on ksoftirqd/1 In-Reply-To: Your message of "Wed, 09 May 2007 12:08:43 EDT." <4123.1178726923@turing-police.cc.vt.edu> From: Valdis.Kletnieks@vt.edu References: <20070509012322.199f292b.akpm@linux-foundation.org> <4123.1178726923@turing-police.cc.vt.edu> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1178851964_3480P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Thu, 10 May 2007 22:52:44 -0400 Message-ID: <5314.1178851964@turing-police.cc.vt.edu> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1800 Lines: 46 --==_Exmh_1178851964_3480P Content-Type: text/plain; charset=us-ascii On Wed, 09 May 2007 12:08:43 EDT, Valdis.Kletnieks@vt.edu said: > On Wed, 09 May 2007 01:23:22 PDT, Andrew Morton said: > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.21/2.6.21-mm2/ > > Boots up to multiuser mostly OK. However... > > It comes up with a screaming ksoftirqd - usually /1 but one boot had /0. > Just sitting there, 100% CPU according to 'top'. Tried 'echo t > /proc/sysrq-trigger' to get > a trace, but it was always running on the other CPU - even after I reniced > it down to 19 and launched 2 'for(;;)' C programs to suck the cycles. It would > be failing to get any CPU - until I did the 'echo t' and then it would be > "running" again. Anybody got any good debugging ideas here? OK, finally tracked this one down - the out-of-tree iwlwifi git tree for the Intel 3945ABG card had some disagreements with the 2.6.21-mm2 git-wireless.patch Unfortunately, the last known-working for this was -r5-mm2, as I didn't test -rc6-mm* or -rc7-mm* for this (I hit other issues with those so I didn't notice this one). I'll try to work up some of those tomorrow and see if I can narrow it down at least a *little* bit. --==_Exmh_1178851964_3480P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Exmh version 2.5 07/13/2001 iD8DBQFGQ9p8cC3lWbTT17ARAqriAJ0ZLzDHf7w4i958KtQsGc6FCu6FrwCg0G+w uBaiusJuOiNZkWPihaCegKk= =hDeS -----END PGP SIGNATURE----- --==_Exmh_1178851964_3480P-- - 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/