From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jarek Poplawski Subject: Re: BUG: soft lockup detected on CPU#0! (2.6.18.2 plus hacks) Date: Wed, 10 Jan 2007 13:50:48 +0100 Message-ID: <20070110125048.GB2611@ff.dom.local> References: <20070104.123333.91315611.davem@davemloft.net> <459EB627.5040606@candelatech.com> <20070108065346.GA1665@ff.dom.local> <45A277E6.6000904@candelatech.com> <20070108100350.1187a3dc@freekitty> <20070109081045.GA1703@ff.dom.local> <20070110090411.GA1589@ff.dom.local> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Ben Greear , David Miller , herbert@gondor.apana.org.au, dlstevens@us.ibm.com, netdev@vger.kernel.org Return-path: Received: from mx2.go2.pl ([193.17.41.42]:38410 "EHLO poczta.o2.pl" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932787AbXAJMsy (ORCPT ); Wed, 10 Jan 2007 07:48:54 -0500 To: Stephen Hemminger Content-Disposition: inline In-Reply-To: <20070110090411.GA1589@ff.dom.local> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Wed, Jan 10, 2007 at 10:04:11AM +0100, Jarek Poplawski wrote: ... > It looks like you're talking about the right thing > and I'm a fool again! Now I try to find why I even > had to pay for this. I read again and again adequate > chapters from R. Love and C. Benvenuti's books, see > a lot about kernel preemption in 2.6, but can't see > anything about preemption disabled in ioctls - maybe > I'm blind or they are badly translated. Now I look > into "Linux Device Drivers", see ch. 6 about ioctls, > blocking I/O and RCU, but nothing about preemption > disabled again. Maybe this is omited because it's > obvious to people who started hacking with earlier > kernels? ... or maybe it's even more complicated... For the time being, I revoke my critique of these books. Jarek P.