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Subject: Re: + high-res-timers-utilize-tsc-clocksource-again.patch added to
	-mm tree
From: Daniel Walker <dwalker@mvista.com>
To: linux-kernel@vger.kernel.org
Cc: tglx@linutronix.de, mingo@elte.hu
In-Reply-To: <200612010114.kB11EvV3027260@shell0.pdx.osdl.net>
References: <200612010114.kB11EvV3027260@shell0.pdx.osdl.net>
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Date: Tue, 12 Dec 2006 08:46:09 -0800
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> +
> +	if (pm == last_pm) {
> +		interval_tsc = now_tsc - last_tsc;
> +		interval_tsc *= HZ;
> +		do_div(interval_tsc, cpu_khz*1000);
> +	} else {
> +		if (pm < last_pm)
> +			pm += ACPI_PM_OVRRUN;
> +		pm_delta = pm - last_pm;
> +		interval_tsc = (((u64) pm_delta) * pm_multiplier) >> 22;
> +		do_div(interval_tsc, TICK_NSEC);
> +	}



What is this accomplishing? My TSC gets marked unstable, and it's not
unstable, in addition I have HRT off .. The else clause above just
doesn't seem right ..

Daniel