linux-kernel - Re: [PATCH 1/4] fastboot: Asynchronous function calls to speed up kernel boot

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Message-ID: <20090104110932.6563cc6d@infradead.org>
Date:	Sun, 4 Jan 2009 11:09:32 -0800
From:	Arjan van de Ven <arjan@...radead.org>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
	mingo@...e.hu, fweisbec@...il.com, linux-scsi@...r.kernel.org,
	linux-ide@...r.kernel.org, linux-acpi@...r.kernel.org,
	akpm@...ux-foundation.org
Subject: Re: [PATCH 1/4] fastboot: Asynchronous function calls to speed up
 kernel boot

On Sun, 04 Jan 2009 20:05:26 +0100
Andi Kleen <andi@...stfloor.org> wrote:

> Surely the thread should die again boot up? On module load
> synchronisity is usually not a problem.

sadly that's not correct in practice based on the fast boot work we've
done.

> 
> Personally I think it would be better to make this more generic.
> Various subsystems have thread pool implementations now, 

sort of kinda. If a good one appears I'd be happy to build on top of
that, assuming it's generic enough.

> and this
> is just another variant that except for the sequence stuff
> isn't all that much different. So it would be better to have 
> a generic worker thread manager that just supports these
> barriers too.

... or maybe think about seeing this system as exactly that thread
manager?


-- 
Arjan van de Ven 	Intel Open Source Technology Centre
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org
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