RE: [PATCH V1 01/13] selftests/resctrl: Fix feature detection

From: Prakhya, Sai Praneeth
Date: Mon Mar 09 2020 - 18:51:21 EST


Hi Reinette,

> -----Original Message-----
> From: Reinette Chatre <reinette.chatre@xxxxxxxxx>
> Sent: Monday, March 9, 2020 3:34 PM

[SNIP]

> > That's a good point and makes sense to me. I think we could fix it in
> > two ways 1. grep for strings in dmesg but that will still leave
> > ambiguity in deciding b/w mbm and cqm because kernel prints "resctrl: L3
> monitoring detected" for both the features 2. Check in "info" directory
> > a. For cat_l3, we could search for info/L3
> > b. For mba, we could search for info/MB
> > c. For cqm and mbm, we could search for specified string in
> > info/L3_MON/mon_features
> >
> > I think option 2 might be better because it can handle all cases, please let me
> know what you think.
>
> I agree. For the reasons you mention and also that (1) may not be possible if the
> loglevel prevents those lines from being printed.

Makes sense. I will work on the fix.

Regards,
Sai