linux-kernel - Re: [PATCH] libata: use single threaded work queue

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Message-ID: <4A8D35E1.2070707@s5r6.in-berlin.de>
Date:	Thu, 20 Aug 2009 13:39:13 +0200
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Tejun Heo <htejun@...il.com>, Jeff Garzik <jeff@...zik.org>,
	Jens Axboe <jens.axboe@...cle.com>, Mark Lord <liml@....ca>,
	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: Re: [PATCH] libata: use single threaded work queue

Alan Cox wrote:
> Somewhat simpler for the general case would be to implement
> 
> create_workqueue(min_threads,max_threads, max_thread_idle_time);
> queue_work_within();
> 
> at which point you can queue work to the workqueue but with a per
> workqueue timing running so you know when you might need to create a new
> thread if the current work hasn't finished. Idle threads would then sleep
> and either expire or pick up new work
[...]

Sounds a lot like kernel/slow-work.c / include/linux/slow-work.h to me
(as Ben already pointed out).
-- 
Stefan Richter
-=====-==--= =--- =-=--
http://arcgraph.de/sr/
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