* perf tool pmuevents: About arm64 a76 JSON
@ 2019-10-02 15:37 John Garry
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From: John Garry @ 2019-10-02 15:37 UTC (permalink / raw)
To: James.Clark
Cc: Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo,
Mark Rutland, Jiri Olsa, Namhyung Kim, seanvk.dev,
Florian Fainelli, wcohen, Ganapatrao Kulkarni, Will Deacon,
linux-kernel
Hi,
I noticed that the JSON to support a76 pmu events was added recently.
May I ask why we add explicit support for the common architectural and
microarch events (event id 0x0-0x3f), when they would be already
available from the kernel pmuv3 driver?
The ampere emag jsons do similar. Others don't.
The only advantage I see is that we have an event description, but I am
sure how useful that is.
Cheers,
John
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