From mboxrd@z Thu Jan 1 00:00:00 1970 From: Masami Hiramatsu Subject: Re: perf-probe: issue with latest fedora kernel Date: Mon, 13 Dec 2010 23:04:36 +0900 Message-ID: <4D0627F4.1030605@hitachi.com> References: <20101209153548.GA11820@ghostprotocols.net> <20101213125837.GB5407@ghostprotocols.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from mail7.hitachi.co.jp ([133.145.228.42]:44413 "EHLO mail7.hitachi.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932086Ab0LMOEm (ORCPT ); Mon, 13 Dec 2010 09:04:42 -0500 In-Reply-To: Sender: linux-perf-users-owner@vger.kernel.org List-ID: To: Francis Moreau Cc: Arnaldo Carvalho de Melo , linux-perf-users@vger.kernel.org, 2nddept-manager@sdl.hitachi.co.jp (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. Thank you, -- Masami HIRAMATSU 2nd Dept. Linux Technology Center Hitachi, Ltd., Systems Development Laboratory E-mail: masami.hiramatsu.pt@hitachi.com