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Hi, Dmitry
I had rewritten the coverage filter to support the interfaces you mentioned in the mailing list.
Since you have not yet decided how to integrate weighted kernel state into weighted PC.
I separate a patch that only has the coverage filter but no weighted PC.
So, should I send another PR? Or psuh to your "dvyukov:hardenedlinux-harbian-qa" branch?
Or rewrite code and push untill you totally determined how to integrate these features?

Please send a new PR.
Starting without weighted PCs is better in either case, huge changes are hard to review, iterate and integrate.