Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751942AbWI3U3a (ORCPT ); Sat, 30 Sep 2006 16:29:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751938AbWI3U3a (ORCPT ); Sat, 30 Sep 2006 16:29:30 -0400 Received: from smtp.osdl.org ([65.172.181.4]:60546 "EHLO smtp.osdl.org") by vger.kernel.org with ESMTP id S1751936AbWI3U33 (ORCPT ); Sat, 30 Sep 2006 16:29:29 -0400 Date: Sat, 30 Sep 2006 13:28:14 -0700 (PDT) From: Linus Torvalds To: Al Viro cc: Eric Rannaud , Linux Kernel Mailing List , Ingo Molnar , Andrew Morton , nagar@watson.ibm.com, Chandra Seetharaman , Andi Kleen , Jan Beulich Subject: Re: BUG-lockdep and freeze (was: Arrr! Linux 2.6.18) In-Reply-To: <20060930202117.GO29920@ftp.linux.org.uk> Message-ID: References: <5f3c152b0609301220p7a487c7dw456d007298578cd7@mail.gmail.com> <20060930202117.GO29920@ftp.linux.org.uk> 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: 841 Lines: 21 On Sat, 30 Sep 2006, Al Viro wrote: > > Oh, so _that_ is what it is supposed to do? I've seen it when it went > in, tried to read, barfed and chalked it up to KDB or itanic braindamage > (both have turds of that genre). Didn't realize that lockdep used it too... Well, anything that shows or needs a back-trace. By definition, it's pretty much just debug code. I sure as hell hope we don't have any actual _semantics_ that depend on back-traces, like the broken asynchronous C++ exception handling code etc that people have in user space (what a total brain-damage _that_ is!). Linus - 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/