linux-kernel - Re: [PATCH 1/2] hwmon: Enhance the sysfs API for power meters.

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Date:	Fri, 7 Aug 2009 20:09:06 +0200
From:	Pavel Machek <pavel@....cz>
To:	"Darrick J. Wong" <djwong@...ibm.com>
Cc:	Len Brown <lenb@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	lm-sensors <lm-sensors@...sensors.org>,
	linux-acpi <linux-acpi@...r.kernel.org>,
	Zhang Rui <rui.zhang@...el.com>
Subject: Re: [PATCH 1/2] hwmon: Enhance the sysfs API for power meters.


> @@ -365,6 +373,16 @@ power[1-*]_average_lowest	Historical average minimum power use
>  				Unit: microWatt
>  				RO
>  
> +power[1-*]_average_max		A notification is sent when power use
> +				rises above this value.
> +				Unit: microWatt
> +				RW
> +

How is the notification sent?

> +power[1-*]_average_min		A notification is sent when power use
> +				sinks below this value.
> +				Unit: microWatt
> +				RW

And what is this good for? Will it wake from sleep? Will it wake from
C3?

...seems like good way to prevent deep sleep states.

> +power[1-*]_cap			If power use rises above this limit, the
> +				system should take action to reduce
> power use.

System as in 'hw'? Or who? And how?
								Pavel
-- 
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