On Friday 20 Nov 2020 at 14:49:04 (+0530), Viresh Kumar wrote: > This is unlikely to be an issue on systems where cpufreq policies are > shared between multiple CPUs, because in those cases the policy > utilization is computed as the maximum of the CPU utilization values > over the whole policy and if that turns out to be low, reducing the > frequency for the policy most likely is a good idea anyway.
Hmm, I'm not sure I agree with this actually. We may be migrating the task to a different policy altogether. And even if we migrate to another CPU in the current policy, the task util_avg may be small just because it was packed with other tasks on a rq, which means it may not increase the util of the destination rq by much. ISTR Douglas' EM-based schedutil boosting series was addressing that at some point, I'll go have a look back at that discussion...
