[PATCH v5 2/4] eal: allow applications to report their cpu usage

[Konstantin Ananyev]

> Konstantin Ananyev, Feb 06, 2023 at 21:34:
> > Yes, app knows what resources it wants to free.
> > But it has no way to know *when* it is safe to free them.
> > Just a bit more explanation:
> > App invokes your function which resets global value of CB.
> > How would it know that after return from this function none
> > other thread still not executing this CB right now?
> > And how determine when this thread will finish with executing CB function?
> > That's why it might be easier simply not allow to reset it at all....
> 
> Ok I see. But what should we do to prevent this? Simply ignore the
> request and log a warning?

That's seems like simplest choice to me...
Or if you still prefer to allow it - put a special comment that it is user
responsibility to handle such possible race-condition (inside his CB function or so).