linux-kernel - Re: [PATCH 5/9] Thermal: Create 'mapX' sysfs node for a zone

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Date:	Thu, 10 Jan 2013 06:28:29 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	"R, Durgadoss" <durgadoss.r@...el.com>
Cc:	"Zhang, Rui" <rui.zhang@...el.com>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"eduardo.valentin@...com" <eduardo.valentin@...com>,
	"hongbo.zhang@...aro.org" <hongbo.zhang@...aro.org>,
	"wni@...dia.com" <wni@...dia.com>
Subject: Re: [PATCH 5/9] Thermal: Create 'mapX' sysfs node for a zone

On Thu, Jan 10, 2013 at 12:50:20PM +0000, R, Durgadoss wrote:
> > -----Original Message-----
> > From: linux-pm-owner@...r.kernel.org [mailto:linux-pm-
> > owner@...r.kernel.org] On Behalf Of Greg KH
> > Sent: Tuesday, January 08, 2013 12:51 AM
> > To: R, Durgadoss
> > Cc: Zhang, Rui; linux-pm@...r.kernel.org; linux-kernel@...r.kernel.org;
> > eduardo.valentin@...com; hongbo.zhang@...aro.org; wni@...dia.com
> > Subject: Re: [PATCH 5/9] Thermal: Create 'mapX' sysfs node for a zone
> > 
> > On Mon, Jan 07, 2013 at 12:43:22PM +0530, Durgadoss R wrote:
> > > This patch creates a thermal map sysfs node under
> > > /sys/class/thermal/zoneX/. This contains
> > > entries named map0, map1 .. mapN. Each map has the
> > > following space separated values:
> > > trip_type sensor_name cdev_name trip_mask weights
> > 
> > sysfs file are always "one value per file".  This seems to violate that
> > rule, so please rework this.
> 
> These values together represent the binding information of
> sensors and cooling devices in a zone. That's why we put
> them in a single file.

That doesn't matter, it's still multiple values in a single file that
has to be parsed now.

> >From our previous discussion, I understand we can support
> a lot of nodes in sysfs. So, I will work with Rui to see how we can
> split this in a meaningful way.
> 
> Something like:
> map0_trip_type
> map0_sensor_name
> map0_cdev_name
> map0_mask
> etc..

That would be much better.

thanks,

greg k-h
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