From mboxrd@z Thu Jan 1 00:00:00 1970 From: Francis Moreau Subject: Re: perf-probe: issue with latest fedora kernel Date: Mon, 13 Dec 2010 15:16:05 +0100 Message-ID: References: <20101209153548.GA11820@ghostprotocols.net> <20101213125837.GB5407@ghostprotocols.net> <4D0627F4.1030605@hitachi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-ww0-f44.google.com ([74.125.82.44]:53657 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757642Ab0LMOQM (ORCPT ); Mon, 13 Dec 2010 09:16:12 -0500 Received: by wwa36 with SMTP id 36so6361439wwa.1 for ; Mon, 13 Dec 2010 06:16:10 -0800 (PST) In-Reply-To: <4D0627F4.1030605@hitachi.com> (Masami Hiramatsu's message of "Mon, 13 Dec 2010 23:04:36 +0900") Sender: linux-perf-users-owner@vger.kernel.org List-ID: To: Masami Hiramatsu Cc: Arnaldo Carvalho de Melo , linux-perf-users@vger.kernel.org, 2nddept-manager@sdl.hitachi.co.jp Masami Hiramatsu writes: > (2010/12/13 22:08), Francis Moreau wrote: >> Arnaldo Carvalho de Melo writes: >> >>> Em Mon, Dec 13, 2010 at 11:02:52AM +0100, Francis Moreau escreveu: > >>>> Arnaldo Carvalho de Melo writes: >>>>> Em Thu, Dec 09, 2010 at 04:00:08PM +0100, Francis Moreau escreveu: >>>>>> I'm trying to use perf-probe(1) with the latest F14 kernel >>>>>> (2.6.35.9-64.fc14.x86_64). >>> >>>>>> I also installed kernel-debug-debuginfo-2.6.35.9-64.fc14.x86_64 which >>>>>> contains the running vmlinux image AFAICT. >>> >>>>> Can you try using: >>> >>>>> $ perf probe -k /usr/lib/debug/lib/modules/2.6.35.9-64.fc14.x86_64.debug/vmlinux >>> >>>>> So that it tries it directly instead of looking into the buildid cache? >>> >>>> Does anybody know where I can report this issue to Fedora community ? >>> >>> Please create a ticket at: >>> >>> http://bugzilla.redhat.com >>> >>> More specifically: >>> >>> https://bugzilla.redhat.com/enter_bug.cgi?product=Fedora >>> >>> Mention this changeset: >>> >>> http://git.kernel.org/?p=linux/kernel/git/acme/linux-2.6.git;a=commit;h=34d2ea084a3bce03d73ffe64350db2813f07260c >>> >>> It will make the -k argument work. >>> >>> There is another that will look automatically at this location, but I >>> haven't merged yet, will post here when done. >> >> Hmm, I don't think that any patches recently posted in response of this >> thread will solve the problem. > > I agree with you. > >> The primarily concern here, is that the running kernel has a different >> build-id than the debug image installed by the corresponding debug >> package. >> >> I think it's a distrib issue, hence my question about Fedora report. > > Yes, that is just for fedora people who can easily check > how to reproduce and make sure the problem is here. > Then they can try to solve the problem until the issue > is resolved. I created this report: https://bugzilla.redhat.com/show_bug.cgi?id=662653 Thanks -- Francis