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Date: Sun, 1 Feb 2009 21:19:09 -0800
From: Arjan van de Ven <arjan@infradead.org>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>, 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>
Subject: Re: [RFC][PATCH] create workqueue threads only when needed
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On Mon, 02 Feb 2009 08:37:41 +1100
Benjamin Herrenschmidt <benh@kernel.crashing.org> wrote:

> 
> > I don't know, most of those I've looked on are not documented about
> > the reason for a private workqueue. I guess most of them can use
> > the usual kevent.
> 
> The main problem with kevent is that it gets clogged up.
> 
> That's were thread pools kick in ... tried using Dave Howells slow
> work ?

async function calls are pretty much the same and actually in mainlinme.
Dave Howells stuff in addition plays some extremely weird refcounting
games that I cannot imagine anyone but him needing...