Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755595Ab3F1QDd (ORCPT ); Fri, 28 Jun 2013 12:03:33 -0400 Received: from mail-pb0-f45.google.com ([209.85.160.45]:57138 "EHLO mail-pb0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755382Ab3F1QDb (ORCPT ); Fri, 28 Jun 2013 12:03:31 -0400 Message-ID: <51CDB3CB.8040304@gmail.com> Date: Fri, 28 Jun 2013 10:03:23 -0600 From: David Ahern User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:17.0) Gecko/20130620 Thunderbird/17.0.7 MIME-Version: 1.0 To: Ingo Molnar CC: Jiri Olsa , Peter Zijlstra , Namhyung Kim , Arnaldo Carvalho de Melo , Paul Mackerras , Namhyung Kim , LKML Subject: Re: [PATCH] perf tools: Fixup for removing -f option in perf record References: <1372307120-737-1-git-send-email-namhyung@kernel.org> <20130627093609.GO28407@twins.programming.kicks-ass.net> <20130627103931.GA5534@gmail.com> <20130627104750.GB27378@dyad.programming.kicks-ass.net> <20130628094738.GA28751@krava.brq.redhat.com> <51CD9AE4.6060307@gmail.com> <20130628153736.GA462@gmail.com> In-Reply-To: <20130628153736.GA462@gmail.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 Content-Length: 1066 Lines: 30 On 6/28/13 9:37 AM, Ingo Molnar wrote: > > * David Ahern wrote: > >> On 6/28/13 3:47 AM, Jiri Olsa wrote: >>>>> I thought -f was the implied default for ages? >>>> >>>> OK.. I've been dutifully typing it all this while :-) >>> >>> The '-f' option in record command had no affect.. myabe it got >>> depreceated when we started to backup perf.data to perf.data.old..? >> >> Way back in 2010, 2.6.34 kernel - 7865e817 commit. I've been typing >> the -f for while too. Now about the need for the pesky -f on the >> analysis side.... > > That's only needed when perf.data is owned by a different user, right? > Yes, why not let file permissions dictate of uid x can read uid y files? Why does perf need to have that restriction? For example, QA collects the data files, developers analyze them. David -- 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/