[ltp] Re: HPET timer on thinkpads?

[Phil K.]

Joerg Platte wrote:
> Am Montag, 22. Oktober 2007 schrieb Henrique de Moraes Holschuh:
>> On Mon, 22 Oct 2007, Alex Deucher wrote:
>>> I don't think the t4x laptops have hpet timers.  the t43 might, but
>>> the t40-42 are too old.
>> The T43 does have an HPET, but you need patches in the -rt (real-time)
>> kernel to force-enable it.  And I am not sure it actually saves any power
>> in the specific case of the T43.
>>
>> I don't know about the earlier T4x models.  Check Intel documentation for
>> the ICH and MCH chips on those ThinkPads, if you really want to know.
> 
> My T40p has a HPET timer, but I need the -hrt patch to enable it.
> 
> regards,
> Jörg

The Hrtimer-Patchset fixes the HPET-Detection for my t43. The
Hrtimer-Patchset is included in the rt-Patchset. You can try building a
Vanilla-Kernel with the HPET-Patchset which is avaliable from
http://www.kernel.org/pub/linux/kernel/people/tglx/hrtimers/

Good luck,

Phil