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

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Date:	Sun, 13 May 2007 18:50:25 +0200
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Stas Sergeev <stsp@...et.ru>
Cc:	Linux kernel <linux-kernel@...r.kernel.org>
Subject: Re: [patch] make pit clocksource continuous

On Sun, 2007-05-13 at 20:48 +0400, Stas Sergeev wrote:
> Hello.
> 
> Thomas Gleixner wrote:
> > You need either pm_timer or hpet in order to switch to highres /
> > dynticks. Are those enabled in the kernel config ?
> Yes, both were enabled.
> However, since this board is very old
> (bios is dated 2000), I had "acpi=off".
> Now removing that, makes the hrtimers to
> work.
> 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.

	tglx


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