linux-kernel - Re: Overview of concurrency managed workqueue

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Message-ID: <87fx0jo0z6.fsf@basil.nowhere.org>
Date:	Sat, 19 Jun 2010 10:55:41 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Tejun Heo <tj@...nel.org>
Cc:	Andy Walls <awalls@...metrocast.net>,
	Daniel Walker <dwalker@...eaurora.org>, mingo@...e.hu,
	linux-kernel@...r.kernel.org, jeff@...zik.org,
	akpm@...ux-foundation.org, rusty@...tcorp.com.au,
	cl@...ux-foundation.org, dhowells@...hat.com,
	arjan@...ux.intel.com, johannes@...solutions.net, oleg@...hat.com,
	axboe@...nel.dk
Subject: Re: Overview of concurrency managed workqueue

Tejun Heo <tj@...nel.org> writes:
>
> Wouldn't that be better served by cpu_stop?

No the error handling has to be able to sleep to take VM
locks. That's the whole point its handed off to a
workqueue. Otherwise it could be done directly.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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