RE: [RFC PATCH v7 0/6] TPEBS counting mode support

[Wang, Weilin]

> -----Original Message-----
> From: Namhyung Kim <namhyung@xxxxxxxxxx>
> Sent: Monday, April 22, 2024 12:10 PM
> To: Wang, Weilin <weilin.wang@xxxxxxxxx>
> Cc: Ian Rogers <irogers@xxxxxxxxxx>; Arnaldo Carvalho de Melo
> <acme@xxxxxxxxxx>; Peter Zijlstra <peterz@xxxxxxxxxxxxx>; Ingo Molnar
> <mingo@xxxxxxxxxx>; Alexander Shishkin
> <alexander.shishkin@xxxxxxxxxxxxxxx>; Jiri Olsa <jolsa@xxxxxxxxxx>; Hunter,
> Adrian <adrian.hunter@xxxxxxxxx>; Kan Liang <kan.liang@xxxxxxxxxxxxxxx>;
> linux-perf-users@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Taylor, Perry
> <perry.taylor@xxxxxxxxx>; Alt, Samantha <samantha.alt@xxxxxxxxx>; Biggers,
> Caleb <caleb.biggers@xxxxxxxxx>
> Subject: Re: [RFC PATCH v7 0/6] TPEBS counting mode support
> 
> Hello Weilin,
> 
> On Tue, Apr 2, 2024 at 2:45 PM <weilin.wang@xxxxxxxxx> wrote:
> >
> > From: Weilin Wang <weilin.wang@xxxxxxxxx>
> >
> > Changes in v7:
> > - Update code and comments for better code quality [Namhyung]
> > - Add a separate commit for perf data [Namhyung]
> > - Update retire latency print function to improve alignment [Namhyung]
> >
> > v6: https://lore.kernel.org/all/20240329191224.1046866-1-
> weilin.wang@xxxxxxxxx/
> 
> In general, I think you need to explain what exactly TPEBS is and why
> you want to do this for TPEBS.  Maybe somewhere in the documentation.
> 
Hi Namhyung,

Ok, I will work on this. I had explanations in about TPEBS in the first version of 
the code patch. I will add that in a more propriate place. 

Thanks,
Weilin

> Thanks,
> Namhyung
> 

> >
> > Weilin Wang (6):
> >   perf stat: Parse and find tpebs events when parsing metrics to prepare
> >     for perf record sampling
> >   perf data: Allow to use given fd in data->file.fd
> >   perf stat: Fork and launch perf record when perf stat needs to get
> >     retire latency value for a metric.
> >   perf stat: Add retire latency values into the expr_parse_ctx to
> >     prepare for final metric calculation
> >   perf stat: Add retire latency print functions to print out at the very
> >     end of print out
> >   perf vendor events intel: Add MTL metric json files
> >
> >  tools/perf/builtin-stat.c                     |  249 +-
> >  .../arch/x86/meteorlake/metricgroups.json     |  127 +
> >  .../arch/x86/meteorlake/mtl-metrics.json      | 2551 +++++++++++++++++
> >  tools/perf/util/data.c                        |    7 +-
> >  tools/perf/util/metricgroup.c                 |   87 +-
> >  tools/perf/util/metricgroup.h                 |   22 +-
> >  tools/perf/util/stat-display.c                |   69 +
> >  tools/perf/util/stat-shadow.c                 |   19 +
> >  tools/perf/util/stat.h                        |    4 +
> >  9 files changed, 3115 insertions(+), 20 deletions(-)
> >  create mode 100644 tools/perf/pmu-
> events/arch/x86/meteorlake/metricgroups.json
> >  create mode 100644 tools/perf/pmu-events/arch/x86/meteorlake/mtl-
> metrics.json
> >
> > --
> > 2.43.0
> >
> >