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SubjectRe: [PATCH 2/2] perf vendor events riscv: add T-HEAD C9xx JSON file
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On Tue, 2023-05-16 at 17:45 +0800, Inochi Amaoto wrote:
> > Do c906 and c910 have same HPM events ?
> >
> > https://github.com/T-head-Semi/openc906/blob/main/C906_RTL_FACTORY/gen_rtl/pmu/rtl/aq_hpcp_top.v
> >
> > and
> >
> >
> > https://github.com/T-head-Semi/openc910/blob/main/C910_RTL_FACTORY/gen_rtl/pmu/rtl/ct_hpcp_top.v
> >
> > Look different to me - am i missing something ?
>
> Yes, they as different, but event ids are compatible. See [1] p.99
> and [2] p.73.
>
> It seems I forgot extra event index from C906. I will fix in the v2.
>
> [1]
> https://github.com/T-head-Semi/openc910/blob/main/doc/%E7%8E%84%E9%93%81C910%E7%94%A8%E6%88%B7%E6%89%8B%E5%86%8C.pdf
> [2]
> https://github.com/T-head-Semi/openc906/blob/main/doc/%E7%8E%84%E9%93%81C906%E7%94%A8%E6%88%B7%E6%89%8B%E5%86%8C.pdf

They are not the same - they are different in many ways. And c906 list
seems more complete to me.

I think you should drop wildcard (it shouldn't be used anyway) then and
name it c906.

"0x5b7-0x0-0x0,v1,t-head/c906,core" would match both c906 and c910.


>
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