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From:   Michael Ellerman <mpe@ellerman.id.au>
To:     Segher Boessenkool <segher@kernel.crashing.org>,
        "Paul A. Clarke" <pc@us.ibm.com>
Cc:     Kajol Jain <kjain@linux.ibm.com>, maddy@linux.vnet.ibm.com,
        rnsastry@linux.ibm.com, linuxppc-dev@lists.ozlabs.org,
        linux-kernel@vger.kernel.org, acme@kernel.org,
        linux-perf-users@vger.kernel.org, atrajeev@linux.vnet.ibm.com,
        jolsa@redhat.com
Subject: Re: [PATCH] perf vendor events power10: Add metric events json file
 for power10 platform
In-Reply-To: <20211007184337.GN10333@gate.crashing.org>
References: <20211006073119.276340-1-kjain@linux.ibm.com>
 <20211006173248.GA7389@li-24c3614c-2adc-11b2-a85c-85f334518bdb.ibm.com>
 <20211007134750.GA243632@li-24c3614c-2adc-11b2-a85c-85f334518bdb.ibm.com>
 <20211007184337.GN10333@gate.crashing.org>
Date:   Fri, 08 Oct 2021 16:58:52 +1100
Message-ID: <875yu8njkz.fsf@mpe.ellerman.id.au>
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Segher Boessenkool <segher@kernel.crashing.org> writes:
> On Thu, Oct 07, 2021 at 08:47:50AM -0500, Paul A. Clarke wrote:
>> On Wed, Oct 06, 2021 at 12:32:48PM -0500, Paul A. Clarke wrote:
>> > > +    {
>> > > +        "BriefDescription": "Average cycles per instruction when the instruction finishes at dispatch",
>> > 
>> > I'm not sure what that means.
>> 
>> After doing a bit of research, I think it might be a bit more clear as:
>> "Average cycles per instruction when the NTF instruction finishes at dispatch"
>
> Is "next to finish" some defined and/or sensible term in this context?
> Or do you mean NTC here?  Or what :-)

Yeah I am also more familiar with NTC.

But those descriptions originally come from a spreadsheet we're given,
and they do include NTF as an acronym.

eg. search for NTF in here:

  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/tools/perf/pmu-events/arch/powerpc/power9/metrics.json

From the context it does presumably mean "next to finish".

cheers