linux-kernel - Re: [PATCH 07/41] cpuset: Set up interface for nohz flag

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Message-ID: <1336494356.8226.32.camel@twins>
Date:	Tue, 08 May 2012 18:25:56 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Christoph Lameter <cl@...ux.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Geoff Levand <geoff@...radead.org>,
	linaro-sched-sig@...ts.linaro.org,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Stephen Hemminger <shemminger@...tta.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Chris Metcalf <cmetcalf@...era.com>,
	Gilad Ben Yossef <gilad@...yossef.com>,
	Hakan Akkan <hakanakkan@...il.com>,
	Alessio Igor Bogani <abogani@...nel.org>,
	Avi Kivity <avi@...hat.com>,
	Max Krasnyansky <maxk@...lcomm.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...nel.org>
Subject: Re: [PATCH 07/41] cpuset: Set up interface for nohz flag

On Tue, 2012-05-08 at 18:16 +0200, Peter Zijlstra wrote:
> No, it simply doesn't (and cannot) know this.. well it could but I think
> its an NP-hard problem. The way its been solved is by means of explicit
> configuration using cpusets. 

Yeah, it looks like a combinatorics problem. Anyway, even if we could
solve that problem we'd still end up with the cpuset infrastructure.
Only auto-magically configured instead of manually.
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