linux-kernel - Re: [PATCH v2] perf script python: Add the ins

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Message-ID: <ZrUrZOp1w5-8wjQM@x1>
Date: Thu, 8 Aug 2024 17:32:36 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Adrian Hunter <adrian.hunter@...el.com>
Cc: Zixian Cai <fzczx123@...il.com>, Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>, Namhyung Kim <namhyung@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>, Ian Rogers <irogers@...gle.com>,
	"Liang, Kan" <kan.liang@...ux.intel.com>,
	James Clark <james.clark@...aro.org>,
	Paran Lee <p4ranlee@...il.com>, Ben Gainey <ben.gainey@....com>,
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] perf script python: Add the ins_lat field to event
 handler

On Thu, Aug 08, 2024 at 06:50:16PM +0300, Adrian Hunter wrote:
> On 8/08/24 16:32, Zixian Cai wrote:
> > For example, when using the Alder Lake PMU memory load event, the instruction latency is stored in ins_lat, while the cache latency is stored in weight.
> > 
> > This patch reports the ins_lat field for Python scripting.
> > 
> > Signed-off-by: Zixian Cai <fzczx123@...il.com>
> 
> Minor comments, otherwise:
> 
> Reviewed-by: Adrian Hunter <adrian.hunter@...el.com>

Thanks, I'm then waiting for a v3 with those comments addressed and your
Reviewed-by tag collected,

Thanks,

- Arnaldo
 
> > ---
> > v2) rebase on top of perf-tools-next
> > 
> >  tools/perf/util/scripting-engines/trace-event-python.c | 5 ++++-
> >  1 file changed, 4 insertions(+), 1 deletion(-)
> > 
> > diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
> > index fb00f3ad6815..c9e8dbd6feb5 100644
> > --- a/tools/perf/util/scripting-engines/trace-event-python.c
> > +++ b/tools/perf/util/scripting-engines/trace-event-python.c
> > @@ -888,6 +888,8 @@ static PyObject *get_perf_sample_dict(struct perf_sample *sample,
> >  	set_sample_read_in_dict(dict_sample, sample, evsel);
> >  	pydict_set_item_string_decref(dict_sample, "weight",
> >  			PyLong_FromUnsignedLongLong(sample->weight));
> > +	pydict_set_item_string_decref(dict_sample, "ins_lat",
> > +			PyLong_FromUnsignedLongLong(sample->ins_lat));
> 
> ins_lat is u16 so it could be PyLong_FromUnsignedLong()
> 
> >  	pydict_set_item_string_decref(dict_sample, "transaction",
> >  			PyLong_FromUnsignedLongLong(sample->transaction));
> >  	set_sample_datasrc_in_dict(dict_sample, sample);
> > @@ -1317,7 +1319,7 @@ static void python_export_sample_table(struct db_export *dbe,
> >  	struct tables *tables = container_of(dbe, struct tables, dbe);
> >  	PyObject *t;
> > 
> > -	t = tuple_new(27);
> > +	t = tuple_new(28);
> > 
> >  	tuple_set_d64(t, 0, es->db_id);
> >  	tuple_set_d64(t, 1, es->evsel->db_id);
> > @@ -1346,6 +1348,7 @@ static void python_export_sample_table(struct db_export *dbe,
> >  	tuple_set_s32(t, 24, es->sample->flags);
> >  	tuple_set_d64(t, 25, es->sample->id);
> >  	tuple_set_d64(t, 26, es->sample->stream_id);
> > +	tuple_set_s32(t, 27, es->sample->ins_lat);
> 
> ins_lat is u16 so it could be tuple_set_u32()
> 
> > 
> >  	call_object(tables->sample_handler, t, "sample_table");
> > 
> > --
> > 2.25.1
> >