Re: [PATCH 2.6.12] amd76x_pm: C2 powersaving for AMD K7

From: Tony Lindgren
Date: Tue Jun 21 2005 - 15:30:09 EST

* Joerg Sommrey <jo@xxxxxxxxxx> [050620 13:54]:
> This is a processor idle module for AMD SMP 760MP(X) based systems.
> The patch was originally written by Tony Lindgren and has been around
> since 2002. It enables C2 mode on AMD SMP systems and thus saves
> about 70 - 90 W of energy in the idle mode compared to the default idle
> mode. The idle function has been rewritten and now should be free of
> locking issues and is independent from the number of CPUs. The impact
> from this module on the system clock has been reduced.
> This patch can also be found at

Cool. Just once comment:

> +// #define AMD76X_NTH 1
> +// #define AMD76X_POS 1
> +// #define AMD76X_C3 1

How about separating all this ifdef code into a separate debug patch on top
of the amd_76x_pm patch? Or just leave it out as I don't think anybody is
using it. It would shrink down the patch quite a bit and make it more

I won't be able to access my dual athlon box until September, so I'm not
much of help with this module :)


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