Re: [PATCH 1/4 v4] sched/pelt: Move pelt related code in a dedicated file

[Dietmar Eggemann]

On 03/16/2018 12:25 PM, Vincent Guittot wrote:
> We want to track rt_rq's utilization as a part of the estimation of the
> whole rq's utilization. This is necessary because rt tasks can steal
> utilization to cfs tasks and make them lighter than they are.
> As we want to use the same load tracking mecanism for both and prevent
> useless dependency between cfs and rt code, pelt code is moved in a
> dedicated file.

This would mean that we introduce function calls into the cfs scheduler 
fast-path, something we avoided so far (e.g. the cpu and frequency 
invariance hooks). Are we OK with that?

Quentin mentioned this already during v3 review back in December.

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