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Subject: Re: Acceleration for map_copy_from on powerpc 512x
From: Kenneth Johansson <kenneth@southpole.se>
To: Fortini Matteo <matteo.fortini@mta.it>
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Date: Wed, 21 Oct 2009 16:30:53 +0200
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On Mon, 2009-10-19 at 09:52 +0200, Fortini Matteo wrote:

> I didn't find a cleaner way than just #ifdef'ing the map_copy_from call 
> and substitute with my call on relevant cases. I wonder if there is a 
> cleaner way.

Remove the call to simple_map_init() and do it manually in your driver
with your own functions.

> And yes, as soon as I've cleaned up the code a little bit, I will 
> definitely post a patch about it.
> 
> Moreover: a huge benefit would come from exploiting DMA on these 
> transfers, 

probably depends on the block size if it's a gain or not. What is the
size you normally see.