Re: Regression in 2.6.27 caused by commit bfc0f59

[Thomas Gleixner]

On Mon, 1 Sep 2008, Larry Finger wrote:
> The timed sleep is as accurate as I can measure.
> 
> I put in some test prints. The value of pm2 is zero when the else branch of
> the "if (hpet)" is entered; however, pm1 is 15768471. When we reach the
> do_div(tsc2, tsc1) statement, tsc2 is zero, which I think means that the two
> calls to tsc_read_refs() are returning the same junk value.

Ok, so the pmtimer is probably detected later as unusable and disabled.
Please check your logs for: 
"PM-Timer had inconsistent results:"

Thanks,

	tglx
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