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

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Message-Id: <20100208223540.3cdabe44.akpm@linux-foundation.org>
Date:	Mon, 8 Feb 2010 22:35:40 -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 07:06:38 +0100 Eric Dumazet <eric.dumazet@...il.com> wrote:

> After this patch, I believe that scheduler is allowed to migrate
> dst_gc_task() to an idle cpu.

No, keventd threads are each pinned to a single CPU (kthread_bind() in
start_workqueue_thread()), so dst_gc_task() gets run on the CPU which
ran schedule_delayed_work() and no other.

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