Comment # 54 on bug 109955 from Sylvain BERTRAND

power management related code is in amdgpu, then the right place is here, the
"dri" and
"amdgfx" mailing lists (aka linux gpu driver mailing lists).

As far as I am concerned, when I play dota2, I always switch the GPU dpm to
high and the CPU freq governor to perf (because, all those things steal a
significant amount of fps... actually, I do switch my GPU dpm to high just in
case it would be nasty like the cpu governor).