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
prev parent 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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