linux-kernel - Re: [PATCH RFC v1 2/3] perf: Add perf_event

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Date:   Thu, 25 Aug 2022 14:43:42 -0500
From:   Rob Herring <robh@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Ingo Molnar <mingo@...hat.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Mark Rutland <mark.rutland@....com>,
        Will Deacon <will@...nel.org>, Jiri Olsa <jolsa@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-perf-users <linux-perf-users@...r.kernel.org>
Subject: Re: [PATCH RFC v1 2/3] perf: Add perf_event_attr::config3

On Thu, Aug 25, 2022 at 2:31 PM Arnaldo Carvalho de Melo
<acme@...nel.org> wrote:
>
> Em Thu, Aug 25, 2022 at 01:08:01PM -0500, Rob Herring escreveu:
> > Arm SPEv1.2 adds another 64-bits of event filtering control. As the
> > existing perf_event_attr::configN fields are all used up for SPE PMU, an
> > additional field is needed. Add a new 'config3' field.
>
> Try not to have tools/ and kernel code in the same patch, else you'll
> burden kernel developers into testing tools/, which so far has been
> refrained.

I knew that, but assumed the header was special...

Rob