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Re: memcpy and prefetch

To: David Daney <>
Subject: Re: memcpy and prefetch
From: Ralf Baechle <>
Date: Wed, 28 Jan 2009 10:37:53 +0000
Cc: Michael Sundius <>,, "VomLehn, David" <>,
In-reply-to: <>
Original-recipient: rfc822;
References: <> <>
User-agent: Mutt/1.5.18 (2008-05-17)
On Tue, Jan 27, 2009 at 03:07:45PM -0800, David Daney wrote:

> The Cavium OCTEON port overrides the default memcpy and does use  
> prefetch.  It was recently merged (2.6.29-rc2).  Look at octeon-memcpy.S
> I have thought that memcpy could be generated by mm/page.c as copy_page  
> and clear_page are.

No, these two only generate copy_page and clear_page.  I and Thiemo were
considering to extend this to a full memcopy however.


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