Possible Bug on find_energy_efficient_cpu.

Hi guys!

I was studying your code about EAS on CFS and I saw something that made me thinking.

In your code in fair.c ::find_energy_efficient_cpu() at line 6293 there is this instruction:

base_energy_pd = compute_energy(p, -1, pd);

So in base_energy_pd there is the energy consumed by the core without p.

After this there is at line 6317

prev_delta = compute_energy(p, prev_cpu, pd);

That compute the energy with p on core prev_cpu.

My question is: Is safe do this operation without checking that OPP is the same? Could p on prev_cpu rising the OPP of the entire pd?

Thanks a lot!