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

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Message-Id: <E1LSFhF-0002OC-00.arvidjaar-mail-ru@mx5.mail.ru>
Date:	Wed, 28 Jan 2009 22:03:25 +0300
From:	Andrey Borzenkov <arvidjaar@...l.ru>
To:	Ira Snyder <iws@...o.caltech.edu>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] firmware: speed up request_firmware()

Ira Snyder wrote:

> 
> Without this patch, loading a 12MB firmware image (FPGA bitfiles) called
> vmalloc() approximately 3000 times. With the patch, vmalloc() is only
> called 13 times, however, some memory is wasted until firmware_release()
> is called. Usually, this happens very quickly, so it shouldn't be a
> problem.
> 

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.
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