linux-kernel - Re: [PATCH] mm: fix vmstat_update to keep scheduling itself on all cores

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Message-ID: <alpine.DEB.2.00.1203140908010.5485@router.home>
Date:	Wed, 14 Mar 2012 09:09:39 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Gilad Ben-Yossef <gilad@...yossef.com>
cc:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mel@....ul.ie>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Andi Kleen <ak@...ux.intel.com>, Linux-MM <linux-mm@...ck.org>
Subject: Re: [PATCH] mm: fix vmstat_update to keep scheduling itself on all
 cores

On Wed, 14 Mar 2012, Gilad Ben-Yossef wrote:

> We set up per-cpu work structures for vmstat and schedule them on
> each cpu when they go online only to re-schedule them on the general
> work queue when they first run.

schedule_delayed_work queues on the current cpu unless the
WQ_UNBOUND flag is set. Which is not set for vmstat_work.

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