linux-kernel - Re: [PATCH v6 2/4] perf jevents: Add python converter script

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Date:   Wed, 29 Jun 2022 17:56:40 +0100
From:   John Garry <john.garry@...wei.com>
To:     Ian Rogers <irogers@...gle.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        "Namhyung Kim" <namhyung@...nel.org>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
        "Felix Fietkau" <nbd@....name>, Qi Liu <liuqi115@...wei.com>,
        Like Xu <likexu@...cent.com>, <linux-kernel@...r.kernel.org>,
        <linux-perf-users@...r.kernel.org>,
        Nick Forrington <nick.forrington@....com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        James Clark <james.clark@....com>,
        Andrew Kilroy <andrew.kilroy@....com>,
        "Paul A . Clarke" <pc@...ibm.com>, Will Deacon <will@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        <ananth.narayan@....com>, <ravi.bangoria@....com>,
        <santosh.shukla@....com>, <sandipan.das@....com>,
        Caleb Biggers <caleb.biggers@...el.com>,
        Perry Taylor <perry.taylor@...el.com>,
        Kshipra Bopardikar <kshipra.bopardikar@...el.com>
CC:     Stephane Eranian <eranian@...gle.com>,
        Ian Rogers <rogers.email@...il.com>,
        Thomas Richter <tmricht@...ux.ibm.com>
Subject: Re: [PATCH v6 2/4] perf jevents: Add python converter script

On 27/06/2022 03:57, Ian Rogers wrote:
> +
> +    def unit_to_pmu(unit: str) -> str:
> +      """Convert a JSON Unit to Linux PMU name."""
> +      if not unit:
> +        return None
> +      # Comment brought over from jevents.c:
> +      # it's not realistic to keep adding these, we need something more scalable ...

Since we're converting to python it might be a good idea to consider 
this - ever have an ideas on something better?

Thanks,
John

> +      table = {
> +          'CBO': 'uncore_cbox',
> +          'QPI LL': 'uncore_qpi',
> +          'SBO': 'uncore_sbox',
> +          'iMPH-U': 'uncore_arb',
> +          'CPU-M-CF': 'cpum_cf',
> +          'CPU-M-SF': 'cpum_sf',
> +          'UPI LL': 'uncore_upi',
> +          'hisi_sicl,cpa': 'hisi_sicl,cpa',
> +          'hisi_sccl,ddrc': 'hisi_sccl,ddrc',
> +          'hisi_sccl,hha': 'hisi_sccl,hha',
> +          'hisi_sccl,l3c': 'hisi_sccl,l3c',
> +          'imx8_ddr': 'imx8_ddr',
> +          'L3PMC': 'amd_l3',
> +          'DFPMC': 'amd_df',
> +          'cpu_core': 'cpu_core',
> +          'cpu_atom': 'cpu_atom',
> +      }
> +      return table[unit] if unit in table else f'uncore_{unit.lower()}'
> +