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From: Pekka Paalanen <pq@iki.fi>
To: Ingo Molnar <mingo@elte.hu>
Cc: Pekka Paalanen <pq@iki.fi>,
	linux-kernel@vger.kernel.org,
	Christoph Hellwig <hch@infradead.org>,
	Arjan van de Ven <arjan@infradead.org>,
	Pavel Roskin <proski@gnu.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [RFC 1/3] mmiotrace full patch, preview 3
Date: Tue, 29 Apr 2008 23:40:21 +0300	[thread overview]
Message-ID: <20080429234021.071f7948@daedalus.pq.iki.fi> (raw)
In-Reply-To: <20080428214504.5c359195@daedalus.pq.iki.fi>

On Mon, 28 Apr 2008 21:45:04 +0300
Pekka Paalanen <pq@iki.fi> wrote:

> The current state is that mmiotrace seems to work fine, also on SMP,
> but on SMP there's a chance to miss events due to CPUs racing. At last
> the log produced via ftrace framework is up-to-spec. Inserting user
> comments (markers in mmiotrace-parlance) into the log is not yet
> supported. All in all, after some more testing on my part, IMHO this
> is in a mergeable state.

Ok, looks like I won't be able to do more testing than what I did today.
The sched-devel/latest tree has changes that break the out-of-tree DRM,
so I cannot test with Nouveau, and most likely the proprietary driver
will not work either. A very nice test would be to enable mmiotracing
as early in boot as convinient, but I don't know how to achieve that
with the ftrace framework.

I did notice two bugs in mmiotrace while looking at ioremap.c, so
I will follow here with three patches.

Tested with the patches and sched-devel/latest of
Tue, 29 Apr 2008 11:47:55 +0000
using testmmiotrace.ko and things looked fine.


Thanks.

-- 
Pekka Paalanen
http://www.iki.fi/pq/

  parent reply	other threads:[~2008-04-29 20:40 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-04-28 18:45 Pekka Paalanen
2008-04-28 18:55 ` [RFC 2/3] " Pekka Paalanen
2008-04-28 18:58 ` [RFC 1/3] " Pekka Paalanen
2008-04-28 19:02   ` [RFC 3/3] " Pekka Paalanen
2008-04-28 20:05 ` [RFC 1/3] " Ingo Molnar
2008-04-29 20:40 ` Pekka Paalanen [this message]
2008-04-29 20:43   ` [PATCH 1/3] x86 mmiotrace: fix page-unaligned ioremaps Pekka Paalanen
2008-04-29 20:45   ` [PATCH 2/3] x86 mmiotrace: use resource_size_t for phys addresses Pekka Paalanen
2008-04-29 20:46   ` [PATCH 3/3] mmiotrace: rename kmmio_probe::user_data to :private Pekka Paalanen
2008-04-29 20:52     ` Ingo Molnar
2008-05-01 15:38       ` [PATCH] x86 mmiotrace: page level is unsigned Pekka Paalanen
2008-05-01 17:45   ` [RFC 1/3] mmiotrace full patch, preview 3 Pekka Paalanen

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