linux-kernel - Re: [PATCH v3 0/5] powerpc/perf: Add json file support for hv

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Date:   Fri, 17 Jul 2020 10:55:36 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     kajoljain <kjain@...ux.ibm.com>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>, peterz@...radead.org,
        mingo@...hat.com, mark.rutland@....com,
        alexander.shishkin@...ux.intel.com, pc@...ibm.com,
        namhyung@...nel.org, ak@...ux.intel.com, yao.jin@...ux.intel.com,
        linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org,
        irogers@...gle.com, maddy@...ux.ibm.com,
        ravi.bangoria@...ux.ibm.com, anju@...ux.vnet.ibm.com,
        kan.liang@...ux.intel.com, nasastry@...ibm.com
Subject: Re: [PATCH v3 0/5] powerpc/perf: Add json file support for hv_24x7
 core level events

On Fri, Jul 17, 2020 at 01:41:22PM +0530, kajoljain wrote:
> 
> 
> On 7/16/20 8:52 PM, Arnaldo Carvalho de Melo wrote:
> > Em Thu, Jul 16, 2020 at 03:12:11PM +0530, Kajol Jain escreveu:
> >> Patchset enhance current runtime parameter support. It introduces new
> >> fields like "PerChip" and "PerCore" similar to the field "PerPkg" which is
> >> used to specify perpkg events. 
> >>
> >> The "PerCore" and "PerChip" specifies whether its core or chip events.
> >> Based on which we can decide which runtime parameter user want to
> >> access. Now character  '?' can refers different parameter based on user
> >> requirement.
> >>
> >> Initially, every time we want to add new terms like chip, core, thread
> >> etc, we need to create corrsponding fields in pmu_events and event
> >> struct.
> >> This patchset adds an enum called 'aggr_mode_class' which store all these
> >> aggregation like perpkg/percore. It also adds new field 'AggregationMode'
> >> to capture these terms.
> >> Now, if user wants to add any new term, they just need to add it in
> >> the enum defined. I try to test it with  my current setup.
> >>
> >> I also need to replace PerPkg field to AggregationMode in all the
> >> x86 uncore json files. It will great if Andi and team can test it
> >> and let me know if they have any concerns.
> >>
> >> Changelog:
> >> v2 -> v3:
> >> - Did some nits changes suggested by Jiri include correction of
> >>   indentation, and making PerCore/PerChip values forward after
> >>   PerPkg as 1 in the enum.
> >> - Rebase the patchset on Arnaldo's tmp.perf/core branch.
> >> - Change RFC tag
> > 
> > Hey, have anybody provided Acked-by/Reviewed-by for previous revisions
> > of this patchset? If so you could have collected them for patches
> > without changes, was that the case?
> 
> Hi Arnaldo,
>       I did get "Acked-by: Ian Rogers" on my initial prototype which I send in my RFC.
> Link to the patch: https://lkml.org/lkml/2020/7/5/399
> 
> After that, I break it down and made some nits changes as suggested by Jiri, that's why I didn't
> add his Acked-by tag.
> Ian should I add it, if it seems fine to you.

I posted one more comment and I'd also like to hear from
guys maintainng json list on intel side that they are ok
with this, mainly the change introduced in:

  pmu-events/x86/uncore: Replace PerPkg field to AggregationMode in x86 json files

Andi?

thanks,
jirka