From: Pavel Roskin <proski@gnu.org>
To: Christoph Hellwig <hch@infradead.org>
Cc: benh@kernel.crashing.org, Dave Airlie <airlied@gmail.com>,
Pekka Paalanen <pq@iki.fi>,
linux-kernel@vger.kernel.org, jbeulich@novell.com
Subject: Re: Replacement for page fault notifiers?
Date: Wed, 09 Jan 2008 15:41:08 -0500 [thread overview]
Message-ID: <1199911268.11485.18.camel@dv> (raw)
In-Reply-To: <20080109202644.GA5514@infradead.org>
On Wed, 2008-01-09 at 20:26 +0000, Christoph Hellwig wrote:
> On Wed, Jan 09, 2008 at 03:24:16PM -0500, Pavel Roskin wrote:
> > I just assumed (wrongly, as it seems) that the API change didn't remove
> > any useful functionality.
>
> No, this was exactly the correct assumption. Out of tree modules simply
> don't count.
>
> > The problem is that mmiotrace only makes sense in combination with
> > non-free drivers, and I'm not sure it would be welcome in the kernel
> > even if you say so.
>
> It can trace every driver in theory although it's of course not
> really interesting for free drivers. But it's not actually
> functionality used by the drivers but functionlity to trace the drivers
> so it's quite different anyway.
OK, that's reassuring. Maybe it could be used for profiling or to find
bugs that are not obvious otherwise.
--
Regards,
Pavel Roskin
next prev parent reply other threads:[~2008-01-09 20:41 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-08 19:06 Replacement for page fault notifiers? Pekka Paalanen
2008-01-08 20:32 ` Christoph Hellwig
2008-01-08 22:13 ` Dave Airlie
2008-01-09 0:26 ` Benjamin Herrenschmidt
2008-01-09 18:18 ` Pavel Roskin
2008-01-09 18:21 ` Christoph Hellwig
2008-01-09 19:58 ` Benjamin Herrenschmidt
2008-01-09 20:22 ` Christoph Hellwig
2008-01-10 0:42 ` Arjan van de Ven
2008-01-10 0:47 ` Andi Kleen
2008-01-10 0:55 ` Arjan van de Ven
2008-01-10 0:58 ` Benjamin Herrenschmidt
2008-01-10 1:01 ` Andi Kleen
2008-01-10 0:56 ` Benjamin Herrenschmidt
2008-01-10 2:03 ` Matt Mackall
2008-01-10 2:21 ` Pavel Roskin
2008-01-10 2:30 ` Matt Mackall
2008-01-10 18:44 ` Pekka Paalanen
2008-01-09 20:24 ` Pavel Roskin
2008-01-09 20:26 ` Christoph Hellwig
2008-01-09 20:41 ` Pavel Roskin [this message]
2008-01-09 20:44 ` Valdis.Kletnieks
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