linux-kernel - Re: [PATCH] firmware: speed up request

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Message-ID: <20090128194534.457d58cd@lxorguk.ukuu.org.uk>
Date:	Wed, 28 Jan 2009 19:45:34 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Andrey Borzenkov <arvidjaar@...l.ru>
Cc:	Ira Snyder <iws@...o.caltech.edu>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] firmware: speed up request_firmware()

> Some drivers cache firmware in memory. Doubing the amount of needed memory 
> definitely would not be the best idea. Check drivers/net/wireless for 
> examples.

A lot of drivers could perfectly happily exist with a simple iterator
helper and being returned sg lists of pages. It seems that for big
firmwares at least there is a root cause which is deeper than how you
grow your vmalloc buffer.

Alan
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