RE: [PATCH] x86/resctrl: mba_MBps: Fall back to total b/w if local b/w unavailable

[Luck, Tony]

> > What I meant was I think it would be enough to just give the function
> > you added a name that's more specific to the Mbps controller use case.
> > For example, get_mba_sc_mbm_state().
>
> I actually liked this idea. Add a new function get_mba_sc_mbm_state. That
> way we exactly know why this function is used. I see you already sent a v2
> making the event global. Making it global may not be good idea. Can you
> please update the patch and resend. Also please add the comment about why
> you are adding that function.

Can you explain why you don't like the global? If there is a better name for it,
or a better comment for what it does, or you think the code that sets the value
could be clearer, then I'm happy to make changes there.

Which events are supported by a system is a static property. Figuring out once
at "init" time which event to use for mba_MBps seems a better choice than
re-checking for each of possibly hundreds of RMIDs every second. Even though
the check is cheap, it is utterly pointless.

-Tony