linux-kernel - Re: [PATCH] perf vendor events: Add Arm Neoverse V2 PMU events

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Message-ID: <dcf5d62d-8163-dfee-a6b7-e75207650551@huawei.com>
Date:   Fri, 21 Oct 2022 11:47:18 +0100
From:   John Garry <john.garry@...wei.com>
To:     James Clark <james.clark@....com>,
        <linux-perf-users@...r.kernel.org>, <acme@...nel.org>
CC:     <linux-kernel@...r.kernel.org>, <nick.forrington@....com>,
        <al.grant@....com>, Will Deacon <will@...nel.org>,
        Mike Leach <mike.leach@...aro.org>,
        Leo Yan <leo.yan@...aro.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        "Namhyung Kim" <namhyung@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH] perf vendor events: Add Arm Neoverse V2 PMU events

On 20/10/2022 14:45, James Clark wrote:
> Rename the neoverse-n2 folder to make it clear that it includes V2, and
> add V2 to mapfile.csv. V2 has the same events as N2, visible by running
> the following command in the ARM-software/data github repo [1]:
> 
>    diff pmu/neoverse-v2.json pmu/neoverse-n2.json | grep code
> 
> Testing:
> 
>    $ perf test pmu
> 
>    10: PMU events                                           :
>    10.1: PMU event table sanity                             : Ok
>    10.2: PMU event map aliases                              : Ok
>    10.3: Parsing of PMU event table metrics                 : Ok
>    10.4: Parsing of PMU event table metrics with fake PMUs  : Ok
> 
> [1]:https://github.com/ARM-software/data
> 
> Signed-off-by: James Clark<james.clark@....com>
> ---

This looks ok. Out of curiosity, do you know how the naming works for 
these neoverse cores? Were "n" a predecessor to "v"?

thanks,
John