On Saturday, August 15, 2015 02:48:17 PM Peter Zijlstra wrote:

So this OPP thing, I think that got mentioned once earlier in this patch
set, wth is that?

OPP stands for Operating Performance Points.  It is a library for representing
working clock-voltage combinations.

Described in Documentation/power/opp.txt (but may be outdated as there's some
work on it going on).

CC Viresh who's working on it right now.

Thanks,
Rafael