linux-kernel - Re: [PATCH] Mark timer_stats as incompatible with multiple pid namespaces

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Message-ID: <20071213090102.GB1926@elte.hu>
Date:	Thu, 13 Dec 2007 10:01:02 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Linux Containers <containers@...ts.osdl.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Mark timer_stats as incompatible with multiple pid
	namespaces


* Eric W. Biederman <ebiederm@...ssion.com> wrote:

> /proc/timer_stats currently reports the user of a timer by pid, which 
> is a reasonable approach.  However if you are not in the initial pid 
> namespace the pid that is reported is nonsense.
> 
> Therefore until we can make timer_stats pid namespace safe just 
> disable it in the build if pid namespace support is selected so we at 
> least know we have a conflict.

What the heck??? Please solve this properly instead of hiding it. 
/proc/timer_stats is damn useful and it's a must-have for powertop to 
work.

	Ingo
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