On Wed, Mar 26, 2003 at 10:42:23AM +0100, Jan Dittmer wrote:
> Greg KH wrote:
> As an example of the changes necessary, here's a patch against the i2c
> >cvs version of the eeprom.c driver that converts it over to use sysfs,
> >instead of the /proc and sysctl interface. It's still a bit rough, but
> >you should get the idea of where I'm wanting to go with this. As you
> >can see, it takes about 100 lines of code off of this driver, which is
> >nice.
> >
> I thought about doing something like this for adding sysfs support.
> Should the voltages and other data appear as integer or as floats in
> sysfs tree? (ie. 1.20V or 120cV)
floats are a pain!
As we should have only one value per file, why not just "know" the units
of the file, so that we don't have to mess with a decimal point. Makes
the kernel a lot simpler and smaller, and then userspace can easily
parse the number and do any needed conversions.
> And what should be written back? I think the /proc interface expects
> floats...
Again, I would vote for simple integers.
And good documentation about what each file's units are :)
thanks,
greg k-h
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