linux-kernel - [RT] [RFC] simple SMI detector

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Message-Id: <1232751312.3990.59.camel@perihelion.bos.jonmasters.org>
Date:	Fri, 23 Jan 2009 17:55:12 -0500
From:	Jon Masters <jcm@...hat.com>
To:	linux-rt-users@...r.kernel.org
Cc:	LKML <linux-kernel@...r.kernel.org>,
	williams <williams@...hat.com>,
	"Luis Claudio R. Goncalves" <lgoncalv@...hat.com>
Subject: [RT] [RFC] simple SMI detector

Folks,

Here's a simple SMI detector we've been playing around with internally.
In case anyone wants to play with it, and especially help clean it up :)

SMI events are particularly unhelpful on Real Time systems because we
effectively have the CPU stolen from under us. We can't prevent this
easily without BIOS vendors/system vendor co-operation, but we can help
to diagnose and log that these are occuring...which can be very helpful
too.

Cheers,

Jon.

View attachment "add_smi_detector_module.patch" of type "text/x-patch" (11004 bytes)