linux-kernel - [PATCH 0/4] ACPI / PM: Export power information to user space

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Date:	Tue, 22 Jan 2013 03:15:52 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"Kristen C. Accardi" <kristen.c.accardi@...el.com>,
	Len Brown <lenb@...nel.org>
Subject: [PATCH 0/4] ACPI / PM: Export power information to user space

On Monday, January 21, 2013 02:03:03 PM Rafael J. Wysocki wrote:
> On Monday, January 21, 2013 01:48:55 AM Rafael J. Wysocki wrote:
> > On Sunday, January 20, 2013 03:51:40 PM Rafael J. Wysocki wrote:
> > > Hi Greg,
> > > 
> > > The following patch series is about exporting ACPI power resources to user
> > > space that will be necessary for PM diagnostics on new platforms (powertop is
> > > the target).  Still, existing systems can also benefit from that, like my
> > > oldish HP nx6325 on which the patches have been tested.
> > > 
> > > Patch [1/3] shouldn't be really controverisal, as it only makes it possible
> > > to read power resources' reference counters from user space in a quite
> > > straightforward way.
> > > 
> > > Patch [3/3], however, exposes lists of power resources associated with
> > > different power states of devices using ACPI PM as sysfs subdirectories
> > > containing symbolic links and that requires some sysfs changes made by
> > > patch [2/3].
> > > 
> > > Admittedly, my sysfs skills are limited so please let me know if those
> > > changes make sense and are acceptable from your perspective.  If not, then
> > > please kindly advise what I can do instead of them.
> > > 
> > > The patches apply on top of the current linux-next branch of the linux-pm.git
> > > tree.
> > 
> > Refreshed with Documentation/ABI files as requested.
> 
> Well, that version wasn't really a good one, due to mistakes in the docs
> mostly, so a new one follows (with better docs hopefully).
> 
> Besides, I thought I'd include a patch that exposes ACPI power state
> information, because it kind of belongs to the lot.  It goes as the new [1/4].
> 
> [2/4] is the previous [1/3] and so on.

Here it goes again after the changes we discussed earlier today.

I think I've addressed all of the comments, but if I overlooked something,
please let me know.

Thanks,
Rafael


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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