From: Dan Malek <dan@mvista.com>
To: Graham Stoney <greyham@research.canon.com.au>
Cc: Brian Ford <ford@vss.fsi.com>, linuxppc-embedded@lists.linuxppc.org
Subject: Re: 2.5 or 2.4 kernel profiling
Date: Thu, 14 Dec 2000 11:58:15 -0500 [thread overview]
Message-ID: <3A38FC27.CE7F7F24@mvista.com> (raw)
In-Reply-To: 20001214182126.E8430@brixi.research.canon.com.au
Graham Stoney wrote:
> > The advantage of Graham's DMA into skbufs isn't that the driver doesn't
> > copy/sum, it is that later when the IP stack does it we get burst transfers
> > into cache.
>
> But we get burst transfers into cache in either case,
No, because I originally allocated the receive buffers uncached.
Only cached/copyback pages will burst on the bus. The CPM DMA will
always burst.
-- Dan
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2000-12-14 16:58 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.GSO.4.21.0012071148420.515-100000@eos>
2000-12-07 18:11 ` 2.5 or 2.4 kernel profiling Brian Ford
2000-12-08 17:41 ` diekema_jon
2000-12-08 18:24 ` Brian Ford
2000-12-11 0:45 ` Graham Stoney
2000-12-11 15:27 ` Brian Ford
2000-12-12 2:36 ` Graham Stoney
2000-12-12 3:26 ` Dan Malek
2000-12-12 7:28 ` Graham Stoney
2000-12-12 16:32 ` Brian Ford
2000-12-12 16:58 ` Dan Malek
2000-12-12 17:17 ` Brian Ford
2000-12-12 21:03 ` Dan Malek
2000-12-13 1:15 ` Graham Stoney
2000-12-13 16:14 ` Dan Malek
2000-12-13 17:23 ` Arto Vuori
2000-12-13 17:33 ` Dan Malek
2000-12-13 17:55 ` Arto Vuori
2000-12-13 22:08 ` Brian Ford
2000-12-13 22:45 ` Jerry Van Baren
2000-12-13 22:53 ` Dan Malek
2000-12-14 17:29 ` FEC/FCC driver issues Brian Ford
2000-12-14 7:21 ` 2.5 or 2.4 kernel profiling Graham Stoney
2000-12-14 16:58 ` Dan Malek [this message]
2000-12-15 0:18 ` Graham Stoney
2000-12-12 15:26 ` Brian Ford
2000-12-12 17:12 ` Jerry Van Baren
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