linux-kernel - Re: [lm-sensors] coretemp.0 folder contents changed

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Message-ID: <20140509095708.0f566c34@endymion.delvare>
Date:	Fri, 9 May 2014 09:57:08 +0200
From:	Jean Delvare <jdelvare@...e.de>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
	"Yu, Fenghua" <fenghua.yu@...el.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	lm-sensors@...sensors.org
Subject: Re: [lm-sensors] coretemp.0 folder contents changed

Hi Guenter,

On Wed, 07 May 2014 05:10:58 -0700, Guenter Roeck wrote:
> On 05/07/2014 12:13 AM, Jean Delvare wrote:
> > On Tue, 06 May 2014 06:32:15 -0700, Guenter Roeck wrote:
> >> Can we implement a similar approach to network devices and make hwmon
> >> path names (ie the /sys/class/hwmon/XXX path name) configurable via udev ?
> >> Might be worth exploring.
> >
> > This is one possibility indeed. The good thing is that libsensors makes
> > no assumption on hwmon class device names, so we can change the names
> > without breaking any application which uses libsensors. Scripts
> > accessing sysfs directly may break though (pwmconfig would, for
> > example.)
> >
> > We'll have to be careful when choosing the new names, and make sure
> > there is no name space collision. Network interface renaming has caused
> > a great deal of trouble out there.
>
> Agreed. I'll try to find some time to play with it.
> 
> > Another approach, which I have in mind for quite some time already but
> > could never find the time to implement, would be a small helper binary
> > which would look-up hwmon devices by libsensors-like name (and the
> > other way around too.) Scripts could use it to benefit from libsensors
> > persistent names.
>
> Still needs that binary, though.

I have a proof of concept ready, I'll post it in a minute.

-- 
Jean Delvare
SUSE L3 Support
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