From: Tejun Heo <tj@kernel.org>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: bbee <bumble.bee@xs4all.nl>, linux-ide@vger.kernel.org, alan@redhat.com
Subject: Re: pata_ninja32 plea
Date: Sun, 05 Oct 2008 05:21:43 +0900 [thread overview]
Message-ID: <48E7D057.8040604@kernel.org> (raw)
In-Reply-To: <20081004183010.0809322b@lxorguk.ukuu.org.uk>
Alan Cox wrote:
>> is something that will make it perform great on linux, all it would take is
>> someone with a lot more clue than me to take a look at it.
>>
>> Anyone willing to take a look? Alan?
>
> There is siome minimal information in the FreeBSD driver but they never
> got DMA to work properly AFAIK. If you want DMA support you'll have to go
> do the work to document DMA mode and I suspect it would be quite
> substantial work.
~10MB/s w/ < 25% cpu load doesn't sound like DMA. It sounds more like
32bit PIO, no?
--
tejun
prev parent reply other threads:[~2008-10-04 20:23 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-04 17:17 pata_ninja32 plea bbee
2008-10-04 17:30 ` Alan Cox
2008-10-04 20:21 ` Tejun Heo [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=48E7D057.8040604@kernel.org \
--to=tj@kernel.org \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=alan@redhat.com \
--cc=bumble.bee@xs4all.nl \
--cc=linux-ide@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.