From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 9741 invoked by alias); 6 Jul 2007 14:59:45 -0000 Received: (qmail 9732 invoked by uid 22791); 6 Jul 2007 14:59:45 -0000 X-Spam-Status: No, hits=-2.4 required=5.0 tests=AWL,BAYES_00,DK_POLICY_SIGNSOME,SPF_HELO_PASS,SPF_PASS X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (66.187.233.31) by sourceware.org (qpsmtpd/0.31) with ESMTP; Fri, 06 Jul 2007 14:59:41 +0000 Received: from int-mx1.corp.redhat.com (int-mx1.corp.redhat.com [172.16.52.254]) by mx1.redhat.com (8.13.1/8.13.1) with ESMTP id l66ExdQ1002519 for ; Fri, 6 Jul 2007 10:59:39 -0400 Received: from pobox.toronto.redhat.com (pobox.toronto.redhat.com [172.16.14.4]) by int-mx1.corp.redhat.com (8.13.1/8.13.1) with ESMTP id l66ExdHM019470 for ; Fri, 6 Jul 2007 10:59:39 -0400 Received: from touchme.toronto.redhat.com (IDENT:postfix@touchme.toronto.redhat.com [172.16.14.9]) by pobox.toronto.redhat.com (8.12.11.20060308/8.12.11) with ESMTP id l66ExdAj027547 for ; Fri, 6 Jul 2007 10:59:39 -0400 Received: from ton.toronto.redhat.com (ton.toronto.redhat.com [172.16.14.15]) by touchme.toronto.redhat.com (Postfix) with ESMTP id 34BD4800004 for ; Fri, 6 Jul 2007 10:59:39 -0400 (EDT) Received: from ton.toronto.redhat.com (localhost.localdomain [127.0.0.1]) by ton.toronto.redhat.com (8.13.1/8.13.1) with ESMTP id l66Excps019690 for ; Fri, 6 Jul 2007 10:59:38 -0400 Received: (from fche@localhost) by ton.toronto.redhat.com (8.13.1/8.13.1/Submit) id l66Exc2g019689 for systemtap@sources.redhat.com; Fri, 6 Jul 2007 10:59:38 -0400 Date: Fri, 06 Jul 2007 14:59:00 -0000 From: "Frank Ch. Eigler" To: systemtap@sources.redhat.com Subject: Re: proposed instruction trace support in SystemTap Message-ID: <20070706145938.GG24475@redhat.com> References: <4689826A.9040902@us.ibm.com> <20070706124619.GB22827@us.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070706124619.GB22827@us.ibm.com> User-Agent: Mutt/1.4.1i Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2007-q3/txt/msg00027.txt.bz2 Hi - On Fri, Jul 06, 2007 at 08:46:19AM -0400, grundy wrote: > [...] Maybe we could support two levels of disarmed? One would be > probepoints removed as discussed, the other could be probe points > in, complete handler not firing (just enough to say "we're not > active" and return). The latter is essentially the same as having an "if" conditional within the probe handler - after all, we're already paying the price of dispatching the exception. What I'm proposing is that we allow it *outside* too, to represent the former case. - FChE