Re: [linux-pm] [patch] pm: fix runtime powermanagement's /sys interface

Patrick Mochel
2006-01-05T21:48:06Z

On Thu, 5 Jan 2006, Scott E. Preece wrote:

> --===============26103097005026354==
>
>
> My inclination would be to have the sysfs interface know generic terms,
> with the implementation mapping them to device-specific terms. It ought
> to be possible to build portable tools that don't have to know about
> device-specific states and have the device interfaces (in sysfs) do the
> necessary translation.

Userspace should do the translation. You should give the user the ability
to specify simple, meaningful states, like "on" and "off". But, it should
be the tools itself that are mapping those requests to valid input for the
sysfs files.

Why force the translation into the kernel, and provide more opportunities
for error in parsing the sysfs files? Do it in userspace, and you can
afford much more flexibility and portability.

Thanks,

Patrick