linux-kernel - Re: [PATCH v12 2/5] perf: Add a counter for number of user access events in context

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Message-ID: <87zgpl9rqq.ffs@tglx>
Date:   Tue, 30 Nov 2021 23:57:17 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Rob Herring <robh@...nel.org>, Will Deacon <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     Jonathan Corbet <corbet@....net>,
        Catalin Marinas <catalin.marinas@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Borislav Petkov <bp@...en8.de>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-perf-users@...r.kernel.org
Subject: Re: [PATCH v12 2/5] perf: Add a counter for number of user access
 events in context

On Wed, Oct 27 2021 at 15:16, Rob Herring wrote:
> For controlling user space counter access, we need to know if any event
> in a context (currently scheduled or not) is using user space counters.

Who is 'we'?

Come on. How is someone without context supposed to figure out that 'we'
means ARM64 when staring at that changelog a year later?

Is it really that hard to write coherent changelogs which make sense on
their own and actually follow Documentation/process/ which exists for a
reason?

Thanks,

        tglx