From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753149AbaKJOUa (ORCPT ); Mon, 10 Nov 2014 09:20:30 -0500 Received: from mail-pd0-f171.google.com ([209.85.192.171]:40392 "EHLO mail-pd0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752791AbaKJOU3 (ORCPT ); Mon, 10 Nov 2014 09:20:29 -0500 Message-ID: <5460C9B3.4060705@gmail.com> Date: Mon, 10 Nov 2014 07:20:35 -0700 From: David Ahern User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Namhyung Kim CC: Arnaldo Carvalho de Melo , Peter Zijlstra , Ingo Molnar , Paul Mackerras , Namhyung Kim , LKML , Jiri Olsa , Adrian Hunter Subject: Re: [PATCH 1/3] perf tools: Allow vmlinux to fallback to kallsyms on NO_LIBELF=1 References: <1415337606-2186-1-git-send-email-namhyung@kernel.org> <545CE36C.7040906@gmail.com> <87a93zv6yi.fsf@sejong.aot.lge.com> In-Reply-To: <87a93zv6yi.fsf@sejong.aot.lge.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/10/14, 12:40 AM, Namhyung Kim wrote: > Hi David, > > On Fri, 07 Nov 2014 08:21:16 -0700, David Ahern wrote: >> On 11/6/14, 10:20 PM, Namhyung Kim wrote: >>> It worked w/o libelf, but recent change to use vmlinux for kernel >>> symbols break it. >> >> Do you know the recent change (commit id) that broke it? > > Nope. I tried to find it but failed - older versions seems also have > the problem and some of them could not run perf record. Anyway it looks > like depending some external condition and broken for a while. :( OK. I have a segfault issue when analyzing a mips file offbox and it is related to kernel symbol processing. I was not able to find past version of perf that worked - though limited by the file version checks added around v3.6. David