linux-kernel - Re: [PATCH 2/2] perf vendor events intel: Update event list for Snowridgex

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Date:   Wed, 8 Jun 2022 08:49:45 -0400
From:   "Liang, Kan" <kan.liang@...ux.intel.com>
To:     zhengjun.xing@...ux.intel.com, acme@...nel.org,
        peterz@...radead.org, mingo@...hat.com,
        alexander.shishkin@...el.com, jolsa@...hat.com
Cc:     linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        irogers@...gle.com, adrian.hunter@...el.com, ak@...ux.intel.com
Subject: Re: [PATCH 2/2] perf vendor events intel: Update event list for
 Snowridgex



On 6/8/2022 2:34 AM, zhengjun.xing@...ux.intel.com wrote:
>       {
> -        "BriefDescription": "write requests to memory controller. Derived from unc_m_cas_count.wr",
> +        "BriefDescription": "All DRAM write CAS commands issued",
>           "Counter": "0,1,2,3",
>           "CounterType": "PGMABLE",
>           "EventCode": "0x04",
> -        "EventName": "LLC_MISSES.MEM_WRITE",

The old convertor tool creates many alias to replace the event in the 
event list. The LLC_MISSES.MEM_WRITE event is one of them.
There is no problem to add the original event name. But I think we 
should keep both alias and the original name, in case someone already 
used the alias in their script.


> +        "EventName": "UNC_M_CAS_COUNT.WR",
>           "PerPkg": "1",
> -        "ScaleUnit": "64Bytes",
>           "UMask": "0x30",
>           "Unit": "iMC"
>       },

Thanks,
Kan