>Meaning I'll need some way to distinguish between the interface versions, >or a minimum kernel version considered safe for a particular interface. > >I'll add the code in question to the examples section in /usr/share/doc >for the time being, OK?
Just don't support the old interface, it's beeing phased out before having ever beeing merged in an official tree (only -ac and mine for a few weeks). I'll merge the pmac cpufreq support with Marcelo once the cpufreq core will be there, which should happen once Linus accepts it in 2.5 Ben.
