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Subject: Re: [RFC][PATCH] create workqueue threads only when needed
From: Daniel Walker <dwalker@fifo99.com>
To: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>, linux-kernel@vger.kernel.org,
       Andrew Morton <akpm@linux-foundation.org>,
       Lai Jiangshan <laijs@cn.fujitsu.com>,
       Peter Zijlstra <a.p.zijlstra@chello.nl>,
       Steven Rostedt <rostedt@goodmis.org>
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Date: Mon, 02 Feb 2009 06:49:00 -0800
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On Tue, 2009-01-27 at 01:17 +0100, Frederic Weisbecker wrote:

> All of the workqueues with 0 work inserted do nothing. 
> For several reasons:
> 
> _ Unneeded built drivers for my system that create workqueue(s) when they init
> _ Services which need their own workqueue, for several reasons, but who receive
>   very rare jobs (often never)
> _ ...?
> 

Some of the workqueues you have on your system can be removed just by
tuning your kernel config. It's more desirable to be able to remove the
whole unused feature since that's all unused memory beyond just
thread .. 

Daniel