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From: Dave Jones <davej@codemonkey.org.uk>
To: John Levon <levon@movementarian.org>
Cc: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>,
	torvalds@osdl.org, linux-kernel@vger.kernel.org, "Mallick,
	Asit K" <asit.k.mallick@intel.com>
Subject: Re: [PATCH] Use of Performance Monitoring Counters based on Model number
Date: Wed, 16 Jul 2003 19:05:35 +0100	[thread overview]
Message-ID: <20030716180535.GB26192@suse.de> (raw)
In-Reply-To: <20030716171956.GC19910@compsoc.man.ac.uk>

On Wed, Jul 16, 2003 at 06:19:56PM +0100, John Levon wrote:

 > > Attached is a small patch to make Linux kernel use of performance
 > > monitoring MSRs based on known processor models. Future processor
 > > implementation models may not support the same MSR layout.
 > If you're going to do this you should fix up arch/i386/oprofile/ to
 > error out similarly at least

It'd also be nice to let the user know why things aren't working
instead of silent failure. A simple

	printk (KERN_INFO "Performance counter support for this CPU not yet added.\n");

Should do the trick.

		Dave

      reply	other threads:[~2003-07-16 17:57 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-07-16 17:07 [PATCH] Use of Performance Monitoring Counters based on Model number Pallipadi, Venkatesh
2003-07-16 17:19 ` John Levon
2003-07-16 18:05   ` Dave Jones [this message]

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