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perf/arm-cmn: cmn updates, cmn650/700 support

Jeremy Linton requested to merge jlinton/centos-stream-9:cmn650p into main

Merge Request Required Information

Summary of Changes

Description of problem: The latest batch of arm servers are utilizing CMN-650/700 (gravaton3 for example). The cmn-700 PMU driver updates landed in 5.19, so these patches should be backported for 9.3.

Given how many cores these machines have, the CMN counters can be an important tool in finding (and fixing?) performance issues.

Approved Bugzilla Ticket

All submissions to CentOS Stream must reference an approved ticket in Red Hat Bugzilla. Please follow the CentOS Stream contribution documentation for how to file this ticket and have it approved.

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2118804

Although it is an approved BZ? I don't think that is possible to tell yet, without actually being a RH employee (or is that the pm-rhel field that is visible at the moment?)

Signed-off-by: Jeremy Linton jlinton@redhat.com

Edited by Jeremy Linton

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