Subject: Re: [PATCH 1/3] Updated dynamic tick patches - Fix lost
	tick	calculation in timer_pm.c
From: Lee Revell <rlrevell@joe-job.com>
To: Parag Warudkar <kernel-stuff@comcast.net>
Cc: vatsa@in.ibm.com, linux-kernel@vger.kernel.org, arjan@infradead.org,
       s0348365@sms.ed.ac.uk, kernel@kolivas.org, tytso@mit.edu,
       cfriesen@nortel.com, trenn@suse.de, george@mvista.com,
       johnstul@us.ibm.com, akpm@osdl.org
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	 <43193169.3090801@comcast.net>
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Date: Sat, 03 Sep 2005 01:30:23 -0400
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On Sat, 2005-09-03 at 01:15 -0400, Parag Warudkar wrote:
> Lee Revell wrote:
> 
> > Are lost ticks really that common? If so, any idea what's disabling
> >
> >interrupts for so long (or if it's a hardware issue)?  And if not, it
> >seems like you'd need an artificial way to simulate lost ticks in order
> >to test this stuff.
> >
> >Lee
> >  
> >
> Yes - I know many people with laptops who have this lost ticks problem. 
> So no simulation and/or
> special efforts required.  If anyone wants a test bed - my laptop is the 
> perfect instrument.
> 
> In my case the rip is always as acpi_processor_idle now a days. Earlier 
> it used to be at acpi_ec_read.

Ah, OK, I forgot about SMM traps.

Lee

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