linux-kernel - Re: [PATCH] perf tools: do not complain if root is owning perf.data

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Message-ID: <20090826182459.GD13632@elte.hu>
Date:	Wed, 26 Aug 2009 20:24:59 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Pierre Habouzit <pierre.habouzit@...ersec.com>
Cc:	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf tools: do not complain if root is owning perf.data


* Pierre Habouzit <pierre.habouzit@...ersec.com> wrote:

> This improves patch fa6963b24 so that perf.data stuff that has 
> been dumped as root can be read (annotate/report) by a user 
> without the use of the --force.
> 
> Rationale is that root has plenty of ways to screw us (usually) 
> that do not require twisted schemes involving specially crafting a 
> perf.data.
> 
> Signed-off-by: Pierre Habouzit <pierre.habouzit@...ersec.com>
> ---
>  tools/perf/builtin-annotate.c |    4 ++--
>  tools/perf/builtin-report.c   |    4 ++--
>  2 files changed, 4 insertions(+), 4 deletions(-)

Ok, this makes sense - but i think we should do this in .32 only, 
with a Cc: <stable@...nel.org> backport tag for .31.1.

Mind doing it against the latest perfcounters tree, which can be 
found in -tip:

  http://people.redhat.com/mingo/tip.git/README

your current version does not apply cleanly as the surrounding code 
has changed a bit already.

Thanks,

	Ingo
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