netdev - Re: [PATCH] dst: call cond_resched() in dst_gc

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Message-Id: <20100208233115.456d847c.akpm@linux-foundation.org>
Date:	Mon, 8 Feb 2010 23:31:15 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Stephen Hemminger <shemminger@...tta.com>,
	David Miller <davem@...emloft.net>, pstaszewski@...are.pl,
	netdev@...r.kernel.org
Subject: Re: [PATCH] dst: call cond_resched() in dst_gc_task()

On Tue, 09 Feb 2010 08:20:36 +0100 Eric Dumazet <eric.dumazet@...il.com> wrote:

> I suppose offlining a cpu migrates its works to another (online) cpu ?

Sort of, effectively.  The workqueue code runs all the pending works on
the to-be-offlined CPU and then it's done.

schedule_delayed_work() starts out with a timer, and the timer code
_does_ perform migration off the going-away CPU.
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