From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 1542 invoked by alias); 3 Apr 2006 16:00:49 -0000 Received: (qmail 1535 invoked by uid 22791); 3 Apr 2006 16:00:49 -0000 X-Spam-Status: No, hits=-2.6 required=5.0 tests=AWL,BAYES_00,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; Mon, 03 Apr 2006 16:00:45 +0000 Received: from int-mx1.corp.redhat.com (int-mx1.corp.redhat.com [172.16.52.254]) by mx1.redhat.com (8.12.11.20060308/8.12.11) with ESMTP id k33G0hJh027457; Mon, 3 Apr 2006 12:00:43 -0400 Received: from pobox.toronto.redhat.com (pobox.toronto.redhat.com [172.16.14.4]) by int-mx1.corp.redhat.com (8.12.11.20060308/8.11.6) with ESMTP id k33G0fVH002314; Mon, 3 Apr 2006 12:00:41 -0400 Received: from touchme.toronto.redhat.com (IDENT:postfix@touchme.toronto.redhat.com [172.16.14.9]) by pobox.toronto.redhat.com (8.12.8/8.12.8) with ESMTP id k33G0flO024520; Mon, 3 Apr 2006 12:00:41 -0400 Received: from ton.toronto.redhat.com (ton.toronto.redhat.com [172.16.14.15]) by touchme.toronto.redhat.com (Postfix) with ESMTP id 24D208002B7; Mon, 3 Apr 2006 12:00:41 -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 k33G0e0r014612; Mon, 3 Apr 2006 12:00:40 -0400 Received: (from fche@localhost) by ton.toronto.redhat.com (8.13.1/8.13.1/Submit) id k33G0eLG014609; Mon, 3 Apr 2006 12:00:40 -0400 X-Authentication-Warning: ton.toronto.redhat.com: fche set sender to fche@redhat.com using -f To: Li Guanglei Cc: systemtap@sources.redhat.com Subject: Re: adding statements in alias definition as epilogue References: <4430EA16.8020702@cn.ibm.com> From: fche@redhat.com (Frank Ch. Eigler) Date: Mon, 03 Apr 2006 16:00:00 -0000 In-Reply-To: <4430EA16.8020702@cn.ibm.com> Message-ID: User-Agent: Gnus/5.0808 (Gnus v5.8.8) Emacs/21.3 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2006-q2/txt/msg00016.txt.bz2 Li Guanglei writes: > [...] What I want is to let user specify whether to log backtrace in his > scripts, like the following: > stap -e "probe addevent.tskdispatch.cpuidle { backtrace=1 } [...] > But unfortunately, it won't work because "backtrace=1" is added after > "log_cpuidle_tracedata(HOOKID_TASK_CPUIDLE, backtrace)". [...] You can have two alias definitions: probe addevent.tskdispatch.cpuidle.backtrace = addevent.tskdispatch.cpuidle { backtrace = 1 } probe addevent.tskdispatch.cpuidle = .... { if (backtrace) log_more (); } - FChE