Re: [RFC/PATCHSET 00/19] perf stat: Cleanup counter aggregation (v1)

[Andi Kleen]

On 10/10/2022 10:35 PM, Namhyung Kim wrote:
> Hello,
>
> Current perf stat code is somewhat hard to follow since it handles
> many combinations of PMUs/events for given display and aggregation
> options.  This is my attempt to clean it up a little. ;-)


My main concern would be subtle regressions since there are so many 
different combinations and way to travel through the code, and a lot of 
things are not covered by unit tests. When I worked on the code it was 
difficult to keep it all working. I assume you have some way to 
enumerate them all and tested that the output is identical?

-Andi