Re: [PATCH 1/7] ICH Force HPET: Make generic time capable ofswitching broadcast timer

From: Andrew Morton
Date: Sat Jun 23 2007 - 12:54:17 EST


> On Fri, 22 Jun 2007 13:38:22 -0700 Venki Pallipadi <venkatesh.pallipadi@xxxxxxxxx> wrote:
> Auto-detect the presence of HPET on ICH5 or newer platforms and enable
> HPET for broadcast timer. This gives a bigger upperlimit for tickless time
> tick and improves the power consumption in comparison to PIT as broadcast timer.
>
> This patch:
>
> Change the broadcast timer, if a timer with higher rating becomes available.
>

so... is this the mysterious patchset which will get NOHZ working
on my little Vaio?

I _think_ what's going on here is that your code will go and poke the
hardware to enable the hpet even f the BIOS decided to hide its presence.
Is that correct? If so, perhaps the changelog should mention this
explicitly.

> Applies over linux-2.6.22-rc4-mm2 +
> tglx's patch-2.6.22-rc4-mm2-hrt4 patch

Oh. Well that tears that then.

Thomas, can I assume that you'll send all this stuff back at me?
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/