linux-kernel - Re: perf: regression with PERF_EVENT_IOC

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Date:	Sat, 28 May 2011 12:22:24 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Vince Weaver <vweaver1@...s.utk.edu>
Cc:	linux-kernel@...r.kernel.org, mingo@...e.hu, paulus@...ba.org,
	acme@...hat.com
Subject: Re: perf: regression with PERF_EVENT_IOC_REFRESH

On Fri, 2011-05-27 at 23:38 -0400, Vince Weaver wrote:
> on that note (and while trying to document exactly what the ioctls do) it 
> seems that a PERF_EVENT_IOC_REFRESH with an argument of anything higher 
> than one does not work on kernels 2.6.36 and newer.  The behavior acts
> as if 1 was passed, even if you pass in, say, 3.

Urgh, no that should definitely work. Thanks for the test-case, I'll
work on that (probably not until Monday though, but who knows).
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