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perf stat,jevents: Introduce Default tags for the default mode

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Introduce a new metricgroup, Default, to tag all the metric groups which
will be collected in the default mode.

Add a new field, DefaultMetricgroupName, in the JSON file to indicate
the real metric group name. It will be printed in the default output
to replace the event names.

There is nothing changed for the output format.

On SPR, both TopdownL1 and TopdownL2 are displayed in the default
output.

On ARM, Intel ICL and later platforms (before SPR), only TopdownL1 is
displayed in the default output.

Suggested-by: Stephane Eranian <eranian@google.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ahmad Yasin <ahmad.yasin@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230615135315.3662428-4-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Kan Liang 2023-06-15 06:53:10 -07:00 committed by Arnaldo Carvalho de Melo
parent 969a466144
commit b0a9e8f81f
4 changed files with 12 additions and 4 deletions
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4
tools/perf/builtin-stat.c
View File

@ -2154,14 +2154,14 @@ static int add_default_attributes(void)
* Add TopdownL1 metrics if they exist. To minimize
* multiplexing, don't request threshold computation.
*/
if (metricgroup__has_metric(pmu, "TopdownL1")) {
if (metricgroup__has_metric(pmu, "Default")) {
struct evlist *metric_evlist = evlist__new();
struct evsel *metric_evsel;
if (!metric_evlist)
return -1;
if (metricgroup__parse_groups(metric_evlist, pmu, "TopdownL1",
if (metricgroup__parse_groups(metric_evlist, pmu, "Default",
/*metric_no_group=*/false,
/*metric_no_merge=*/false,
/*metric_no_threshold=*/true,

5
tools/perf/pmu-events/jevents.py
View File

@ -54,8 +54,8 @@ _json_event_attributes = [
# Attributes that are in pmu_metric rather than pmu_event.
_json_metric_attributes = [
'pmu', 'metric_name', 'metric_group', 'metric_expr', 'metric_threshold',
'desc', 'long_desc', 'unit', 'compat', 'metricgroup_no_group', 'aggr_mode',
'event_grouping'
'desc', 'long_desc', 'unit', 'compat', 'metricgroup_no_group',
'default_metricgroup_name', 'aggr_mode', 'event_grouping'
]
# Attributes that are bools or enum int values, encoded as '0', '1',...
_json_enum_attributes = ['aggr_mode', 'deprecated', 'event_grouping', 'perpkg']
@ -307,6 +307,7 @@ class JsonEvent:
self.metric_name = jd.get('MetricName')
self.metric_group = jd.get('MetricGroup')
self.metricgroup_no_group = jd.get('MetricgroupNoGroup')
self.default_metricgroup_name = jd.get('DefaultMetricgroupName')
self.event_grouping = convert_metric_constraint(jd.get('MetricConstraint'))
self.metric_expr = None
if 'MetricExpr' in jd:

1
tools/perf/pmu-events/pmu-events.h
View File

@ -61,6 +61,7 @@ struct pmu_metric {
const char *desc;
const char *long_desc;
const char *metricgroup_no_group;
const char *default_metricgroup_name;
enum aggr_mode_class aggr_mode;
enum metric_event_groups event_grouping;
};

6
tools/perf/util/metricgroup.c
View File

@ -137,6 +137,11 @@ struct metric {
* output.
*/
const char *metric_unit;
/**
* Optional name of the metric group reported
* if the Default metric group is being processed.
*/
const char *default_metricgroup_name;
/** Optional null terminated array of referenced metrics. */
struct metric_ref *metric_refs;
/**
@ -219,6 +224,7 @@ static struct metric *metric__new(const struct pmu_metric *pm,
m->pmu = pm->pmu ?: "cpu";
m->metric_name = pm->metric_name;
m->default_metricgroup_name = pm->default_metricgroup_name;
m->modifier = NULL;
if (modifier) {
m->modifier = strdup(modifier);