Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757950AbZJLTI1 (ORCPT ); Mon, 12 Oct 2009 15:08:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757626AbZJLTI1 (ORCPT ); Mon, 12 Oct 2009 15:08:27 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:33987 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757479AbZJLTI0 (ORCPT ); Mon, 12 Oct 2009 15:08:26 -0400 Date: Mon, 12 Oct 2009 21:07:07 +0200 From: Ingo Molnar To: Frederic Weisbecker Cc: Masami Hiramatsu , Steven Rostedt , lkml , systemtap , DLE , Thomas Gleixner , Arnaldo Carvalho de Melo , Mike Galbraith , Paul Mackerras , Peter Zijlstra , Christoph Hellwig , Ananth N Mavinakayanahalli , Jim Keniston , "Frank Ch. Eigler" Subject: Re: [PATCH tracing/kprobes v3 6/7] perf: Add perf probe subcommand for kprobe-event setup helper Message-ID: <20091012190707.GJ17138@elte.hu> References: <20091007222733.1684.32035.stgit@dhcp-100-2-132.bos.redhat.com> <20091007222822.1684.3251.stgit@dhcp-100-2-132.bos.redhat.com> <20091012190303.GA4748@nowhere> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20091012190303.GA4748@nowhere> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.5 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2145 Lines: 49 * Frederic Weisbecker wrote: > On Wed, Oct 07, 2009 at 06:28:23PM -0400, Masami Hiramatsu wrote: > > Add perf probe subcommand for kprobe-event setup helper to perf command. > > This allows user to define kprobe events by C expressions (C line numbers, > > C function names, and C local variables). > > > > > My libdwarf.h and dwarf.h are available through and > , these are in /usr/include > > But even by fixing the include path in the makefile and probe-finder.h, > I get the following build error: > > util/probe-finder.c: In function ‘die_get_entrypc’: > util/probe-finder.c:222: erreur: ‘Dwarf_Ranges’ undeclared (first use in this function) > util/probe-finder.c:222: erreur: (Each undeclared identifier is reported only once > util/probe-finder.c:222: erreur: for each function it appears in.) > util/probe-finder.c:222: erreur: ‘ranges’ undeclared (first use in this function) > cc1: warnings being treated as errors > util/probe-finder.c:223: erreur: ISO C90 forbids mixed declarations and code > util/probe-finder.c:247: erreur: implicit declaration of function ‘dwarf_get_ranges’ > util/probe-finder.c:247: erreur: nested extern declaration of ‘dwarf_get_ranges’ > util/probe-finder.c:251: erreur: implicit declaration of function ‘dwarf_ranges_dealloc’ > util/probe-finder.c:251: erreur: nested extern declaration of ‘dwarf_ranges_dealloc’ > make: *** [util/probe-finder.o] Erreur 1 > > > I remember we talked about that before, but I don't remember well why it happened. > This is because of a libdwarf version or something, right? > > Which one should I pick? Mine is: > > libdwarf.h > > $Revision: #9 $ $Date: 2008/01/17 $ if it's possible to still have a single set of APIs it would be nice to auto-detect and massage all these libdwarf versions into a single backend within perf. Ingo -- 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/