From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 16907 invoked by alias); 10 Oct 2006 16:40:08 -0000 Received: (qmail 16895 invoked by uid 22791); 10 Oct 2006 16:40:07 -0000 X-Spam-Status: No, hits=-1.2 required=5.0 tests=AWL,BAYES_00,SPF_HELO_PASS,SPF_PASS,UNPARSEABLE_RELAY 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; Tue, 10 Oct 2006 16:40:04 +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 k9AGdvP5024562; Tue, 10 Oct 2006 12:39:57 -0400 Received: from pobox.toronto.redhat.com (pobox.toronto.redhat.com [172.16.14.4]) by int-mx1.corp.redhat.com (8.12.11.20060308/8.12.11) with ESMTP id k9AGdvZ0013839; Tue, 10 Oct 2006 12:39:57 -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 k9AGdvY7031393; Tue, 10 Oct 2006 12:39:57 -0400 Received: from ton.toronto.redhat.com (ton.toronto.redhat.com [172.16.14.15]) by touchme.toronto.redhat.com (Postfix) with ESMTP id 28768800002; Tue, 10 Oct 2006 12:39:57 -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 k9AGduwt032594; Tue, 10 Oct 2006 12:39:56 -0400 Received: (from fche@localhost) by ton.toronto.redhat.com (8.13.1/8.13.1/Submit) id k9AGdtnC032574; Tue, 10 Oct 2006 12:39:55 -0400 X-Authentication-Warning: ton.toronto.redhat.com: fche set sender to fche@redhat.com using -f To: Li Guanglei Cc: "systemtap@sourceware.org" Subject: Re: put probes on a specific line References: <452B0EEB.5020206@cn.ibm.com> From: fche@redhat.com (Frank Ch. Eigler) Date: Tue, 10 Oct 2006 16:40:00 -0000 In-Reply-To: <452B0EEB.5020206@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-q4/txt/msg00066.txt.bz2 Li Guanglei writes: > I ever thought that kernel.function("*@kernel/signal.c:734") will > put a probe on line 734. But after testing and reading the stapprobes > man page, that actually refers to any functions within the > "kernel/signal.c" file that span line 734, i.e, it equals to > kernel.function("send_signal"). So it seems to me the only way to put > probe on a specific line is to use kernel.statements(0x....). [...] Not so: kernel.statement() accepts the same string-based specification of a probe point as kernel.function() does: kernel.statement("*@kernel/signal.c:734") The "function" and "statement" terms are intentional and significant. - FChE