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

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Message-ID: <536A22D2.5070104@roeck-us.net>
Date:	Wed, 07 May 2014 05:10:58 -0700
From:	Guenter Roeck <linux@...ck-us.net>
To:	Jean Delvare <jdelvare@...e.de>
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

On 05/07/2014 12:13 AM, Jean Delvare wrote:
> Hi Guenter,
>
> 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.

Guenter

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