From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762226Ab2FHRNb (ORCPT ); Fri, 8 Jun 2012 13:13:31 -0400 Received: from mail-yw0-f46.google.com ([209.85.213.46]:39592 "EHLO mail-yw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754929Ab2FHRNa (ORCPT ); Fri, 8 Jun 2012 13:13:30 -0400 Message-ID: <4FD232B7.7080905@gmail.com> Date: Fri, 08 Jun 2012 11:13:27 -0600 From: David Ahern User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:12.0) Gecko/20120428 Thunderbird/12.0.1 MIME-Version: 1.0 To: Tim Chen CC: Arnaldo Carvalho de Melo , linux-kernel , ak@linux.intel.com, Stephane Eranian Subject: Re: Does perf inject preserve call chain data? References: <1337712585.3796.186.camel@schen9-DESK> <4FBC0C10.8010801@gmail.com> <20120608143843.GA9954@infradead.org> <1339173896.3796.230.camel@schen9-DESK> In-Reply-To: <1339173896.3796.230.camel@schen9-DESK> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 6/8/12 10:44 AM, Tim Chen wrote: > On Fri, 2012-06-08 at 11:38 -0300, Arnaldo Carvalho de Melo wrote: >> Em Tue, May 22, 2012 at 03:58:40PM -0600, David Ahern escreveu: >>> On 5/22/12 12:49 PM, Tim Chen wrote: >>>> Arnaldo, >>>> >>>> Wonder if perf inject munged the call chain data from perf record? >>>> >>>> When I do >>>> perf record -a -g -o - sleep 5 |perf inject -v -b | perf report -g -i - >>>> I get a complain from perf report >>>> >>>> Warning: >>>> Selected -g but no callchain data. Did you call 'perf record' without -g? >>>> >>> >>> I believe the root cause is that the event list is not written to >>> the pipe. Using Arnaldo's git repo as of today (has fixes from >>> Stephane) this hack shows the info is there and can be processed. >> >> How things stand here? Tim, did this fix things for you? If so, David, >> please resend with a proper subject line and a Tested-by: Tim, ok? >> >> Thanks, >> >> - Arnaldo >> > > It didn't fix things for me when I was testing on a westmere-ex machine. > I got > > # ./perf record -a -g -o - sleep 5 |perf inject -v -b | perf report -g -i - > incompatible file format > incompatible file formatincompatible file formatselected -g but no callchain data. Did you call perf record without -g? > > Testing was done on 3.5.0-rc1. Is ./ needed in front of the second and third invocations are do you have ./ in the PATH? David