linux-kernel - Re: [RFC PATCH 1/1] perf tools: Add 'm' event modifier for counting machine

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Message-ID: <4b655bf8-ce56-ffe6-78b6-1f949b8df11f@linux.intel.com>
Date:   Tue, 11 Jan 2022 10:52:35 -0800
From:   Andi Kleen <ak@...ux.intel.com>
To:     Nikita Shubin <nikita.shubin@...uefel.me>
Cc:     Atish Patra <atishp@...osinc.com>, linux-riscv@...ts.infradead.org,
        linux@...ro.com, Nikita Shubin <n.shubin@...ro.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@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Kajol Jain <kjain@...ux.ibm.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Jin Yao <yao.jin@...ux.intel.com>,
        Ian Rogers <irogers@...gle.com>,
        John Garry <john.garry@...wei.com>,
        Riccardo Mancini <rickyman7@...il.com>,
        Madhavan Srinivasan <maddy@...ux.ibm.com>,
        Song Liu <song@...nel.org>, linux-perf-users@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 1/1] perf tools: Add 'm' event modifier for counting
 machine


>   
>    u - user-space counting
>    k - kernel counting
> + m - machine counting


You really need to explain what "machine counting" actually is, as well 
that is likely irrelevant for most CPUs.

I also didn't see that anywhere in the commit logs.

-Andi