On Mon, 22 Jul 2019, William Cohen wrote:

> I noticed that the newer linux kernel provide uncore counters for arm64 
> processors much like the x86 processors:
> 
> https://www.kernel.org/doc/html/latest/admin-guide/perf/
> 
> Is there any thoughts/suggestions about adding uncore support for arm64?  
> These events are visible to perf but not available in libpfm or papi.
> For example I got access to RHEL8 cn9xx machine running a 4.18.0 kernel with 
> the following processor:

In theory the perf_event_uncode component in PAPI shuld just-work assuming 
the arm64 uncore events match the interface for the x86 ones.

PAPI however depends on libpfm4 support before the events will appear.

I don't think I currently have access to a sufficiently advanced arm64 
machine that has uncore support.

Vince


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