From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Dino Klein" <zagzag-lists-zY4eFNvK5D9If6P1QZMOBw@public.gmane.org>
Subject: Re: cat /proc/acpi/processor/CPU0/power
Date: Sun, 25 Apr 2004 17:01:23 +0000
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To: Nate Grey <nate-XtQPfPCVGG7srOwW+9ziJQ@public.gmane.org>, acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
List-Id: linux-acpi@vger.kernel.org

this is for informational purposes; if you want to know about C-states, then check section 8 in the ACPI specs.
The bus master activity value will change to non-zero values when there is BM activity in the system. BM activity affects the use of C3, which  your chipset doesn't support.

> -----Original Message-----
> From: Nate Grey [mailto:nate-XtQPfPCVGG7srOwW+9ziJQ@public.gmane.org]
> Sent: Sunday, April 25, 2004 10:36 AM
> To: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
> Subject: [ACPI] cat /proc/acpi/processor/CPU0/power
> 
> Hi guys, I'd like to what this mean, and if I can use it to do something on 
> the processor. 
> Thank you. Bye
> 
> ($:~)=> cat /proc/acpi/processor/CPU0/power
> active state:            C2
> default state:           C1
> bus master activity:     00000000
> states:
>     C1:                  promotion[C2] demotion[--] latency[000] 
> usage[00095790]
>    *C2:                  promotion[--] demotion[C1] latency[099] 
> usage[00801998]
>     C3:                  <not supported>
> 
> 
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