From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23087 invoked by alias); 29 Nov 2011 17:19:35 -0000 Received: (qmail 23078 invoked by uid 22791); 29 Nov 2011 17:19:34 -0000 X-SWARE-Spam-Status: No, hits=-2.5 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00,SARE_SUB_GETRID,TW_OC X-Spam-Check-By: sourceware.org Received: from localhost (HELO sourceware.org) (127.0.0.1) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Tue, 29 Nov 2011 17:19:22 +0000 From: "jistone at redhat dot com" To: systemtap@sourceware.org Subject: [Bug tapsets/13450] get rid of most/all probe-alias "?" (optional) markup Date: Tue, 29 Nov 2011 19:03:00 -0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: systemtap X-Bugzilla-Component: tapsets X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: jistone at redhat dot com X-Bugzilla-Status: NEW X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: systemtap at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Changed-Fields: CC Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 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: 2011-q4/txt/msg00241.txt.bz2 http://sourceware.org/bugzilla/show_bug.cgi?id=13450 Josh Stone changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jistone at redhat dot com --- Comment #1 from Josh Stone 2011-11-29 17:18:48 UTC --- (In reply to comment #0) > It quietly fails when the underlying bar probe point is not present. That's not true: $ stap -e 'probe foo = bar ? {} probe foo {}' -p2 semantic error: no match while resolving probe point foo Pass 2: analysis failed. Try again with another '--vp 01' option. The optional tag on the alias allows a user to possibly match the probe with a wildcard, but carry on if it doesn't resolve. $ stap -e 'probe bar = foo ? {} probe b* {}' -p2 -u # probes begin /* <- b* */ vs. $ stap -e 'probe bar = foo {} probe b* {}' -p2 -u semantic error: probe point mismatch at position 0 (alternatives: __nfs __scheduler __signal __tcpmib __vm _linuxmib _signal _sunrpc _syscall _vfs bar begin begin(number) end end(number) error error(number) generic ioblock ioblock_trace ioscheduler ioscheduler_trace ipmib irq_handler kernel kprobe kprocess linuxmib module(string) nd_syscall netdev never nfs nfsd perf process process(number) process(string) procfs procfs(string) scheduler scsi signal socket softirq stap staprun sunrpc syscall tcp tcpmib timer tty udp vfs vm workqueue): identifier 'foo' at :1:13 while resolving probe point foo source: probe bar = foo {} probe b* {} ^ Pass 2: analysis failed. Try again with another '--vp 01' option. -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug.