linux-kernel - RE: Memory allocation modifications in ibm

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Message-ID: <1283401092.16240.8.camel@pasglop>
Date:	Thu, 02 Sep 2010 14:18:12 +1000
From:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:	Jonathan Haws <Jonathan.Haws@....usu.edu>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-net@...r.kernel.org" <linux-net@...r.kernel.org>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>
Subject: RE: Memory allocation modifications in ibm_newemac driver

On Wed, 2010-09-01 at 22:04 +0000, Jonathan Haws wrote:
> Okay, I think I have all the issues worked out and can now send and
> receive any size packet without a hiccup.  I have tested this in our
> system setup as well with data being sent out to disk and did not see
> any problems there either (since it only ever allocates a single page,
> never more).
> 
> Is this something that may be wanted in the mainline?  I have not run
> full benchmarks, but I anticipate that my modified driver is slightly
> slower than the mainline driver because we keep track of an SKB ring,
> as well as a ring of pages and allocate both on each packet received.

Well, it won't hurt to post the patch to review :-)

Make sure to CC me as I more/less maintain that driver.

Cheers,
Ben.


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