linux-kernel - Re: [PATCH 4/4][RFC] perf_counter: Allow sharing of output channels

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Date:	Wed, 19 Aug 2009 22:41:48 +1000
From:	Paul Mackerras <paulus@...ba.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Mike Galbraith <efault@....de>, linux-kernel@...r.kernel.org,
	stephane eranian <eranian@...glemail.com>
Subject: Re: [PATCH 4/4][RFC] perf_counter: Allow sharing of output channels

Ingo Molnar writes:

> Time to add a new sys_perf_counter_chattr() syscall and deprecate 
> the ioctls?

Hmmm... if 2.6.31 goes out with the ioctls, I think we should leave
them in for a long time.  I've never seen what the problem with ioctl
is anyway.  At least, I don't see how a new multi-function syscall
would be any better.

Paul.
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