linux-kernel - Re: [perfmon] Re: [perfmon2] perfmon2 merge news

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Message-ID: <20071114191556.GA32238@one.firstfloor.org>
Date:	Wed, 14 Nov 2007 20:15:56 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Philippe Elie <phil.el@...adoo.fr>
Cc:	William Cohen <wcohen@...hat.com>,
	Andi Kleen <andi@...stfloor.org>,
	Stephane Eranian <eranian@....hp.com>, akpm@...l.org,
	Robert Richter <robert.richter@....com>, gregkh@...e.de,
	linux-kernel@...r.kernel.org
Subject: Re: [perfmon] Re: [perfmon2] perfmon2 merge news

> BTW, isn't rdpmc only enable for ring 0 on linux ? I remember a patch
> to disable it, dunno if it has been applied.

Obviously -- without a system call to set up performance counters it
would be fairly useless. But of course once such system calls are in
they should be able to trigger the bit for each process.

-Andi
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