linux-kernel - Re: [patch] make pit clocksource continuous

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Message-ID:  <pan.2007.05.13.17.55.45@free.fr>
Date:	Sun, 13 May 2007 17:55:45 +0000 (UTC)
From:	Matthieu CASTET <castet.matthieu@...e.fr>
To:	linux-kernel@...r.kernel.org
Subject:  Re: [patch] make pit clocksource continuous

Hi,

On Sun, 13 May 2007 19:36:12 +0200, Thomas Gleixner wrote:

> On Sun, 2007-05-13 at 21:23 +0400, Stas Sergeev wrote:
>> Hello.
>> 
>> Thomas Gleixner wrote:
>> >> Does this mean that on even an older
>> >> boards (without acpi at all) the hrtimers won't work?
>> > Not if PIT is the only clocksource available.
>> So you mean it can work without both the pm_timer and hpet? Sorry for
>> bothering you too much, but I am trying to use the hrtimers in my
>> driver module, so I'd like to know all the corner-cases.
> 
> It does _NOT_ work without pm_timer or hpet for the reasons explained
> before.
there something I don't understand : "pm_timer or hpet" aren't 
clockevent ?

Without acpi there should be still pit and tsc as clocksource ?

Also while talking about clockevent why rtc couldn't be used for that ?


Thanks

Matthieu

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