From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1751410AbdKUOge (ORCPT <rfc822;w@1wt.eu>);
        Tue, 21 Nov 2017 09:36:34 -0500
Received: from mx1.redhat.com ([209.132.183.28]:60232 "EHLO mx1.redhat.com"
        rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
        id S1751115AbdKUOgd (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
        Tue, 21 Nov 2017 09:36:33 -0500
Date: Tue, 21 Nov 2017 12:36:29 -0200
From: Arnaldo Carvalho de Melo <acme@redhat.com>
To: Stephane Eranian <eranian@google.com>
Cc: Milian Wolff <milian.wolff@kdab.com>,
        LKML <linux-kernel@vger.kernel.org>, Jiri Olsa <jolsa@redhat.com>,
        Peter Zijlstra <peterz@infradead.org>, mingo@elte.hu,
        Andi Kleen <ak@linux.intel.com>, David Ahern <dsahern@gmail.com>
Subject: Re: [RFC] perf script: modify field selection option
Message-ID: <20171121143629.GB2187@redhat.com>
References: <CABPqkBQtXcbaimPYf9-QNHQgakJFx7SjGStbDLZ1wKPYYSxzZg@mail.gmail.com>
 <1733994.9IGknXt0fT@agathebauer>
 <CABPqkBQAA+_QVHALf0d8Ry4PuhygmgBsuSGVNXbRqtSoRJxE5Q@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CABPqkBQAA+_QVHALf0d8Ry4PuhygmgBsuSGVNXbRqtSoRJxE5Q@mail.gmail.com>
X-Url: http://acmel.wordpress.com
User-Agent: Mutt/1.5.20 (2009-12-10)
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Tue, 21 Nov 2017 14:36:33 +0000 (UTC)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

Em Mon, Nov 20, 2017 at 03:21:01PM -0800, Stephane Eranian escreveu:
> On Mon, Nov 20, 2017 at 2:50 PM, Milian Wolff <milian.wolff@kdab.com> wrote:
> > On Montag, 20. November 2017 21:53:04 CET Stephane Eranian wrote:
> >> Hi,
> >>
> >> I have been using the perf script -F option on the latest perf and I
> >> find it not very convenient to use. I appreciate the + and - prefix to
> >> field names to add or suppress them. But most of the time, I want to
> >> print only one or two fields and I have to guess which ones are there
> >> by default so I can suppress them. I think there should be a way to
> >> say: start from no fields. I understand why you have default to
> >> maintain compatibility with older perf script but I would like a
> >> syntax to say: remove defaults. For instance:
> >>
> >> $ perf script -F --,+ip,+syms .....
> >>
> >> Where -- would mean drop all defaults.
> >>
> >> Any better suggestions?
> >
> > Isn't `perf script -F ip,sym` what you want? Note the lack of any '+':
> >
> > $ perf script -F ip,sym | head -n 5
> >
> >                   206aad x86_pmu_enable
> >                   380591 ctx_resched
> >                   380b46 __perf_event_enable
> >                   378716 event_function
> >
> Ah, yes, looks like it.
> problem solved then.
> Thanks.

Even more intuitive :-)

- Arnaldo