diff options
Diffstat (limited to 'tools/perf/pmu-events/jevents.py')
| -rwxr-xr-x | tools/perf/pmu-events/jevents.py | 60 |
1 files changed, 53 insertions, 7 deletions
diff --git a/tools/perf/pmu-events/jevents.py b/tools/perf/pmu-events/jevents.py index f57a8f274025..12e80bb7939b 100755 --- a/tools/perf/pmu-events/jevents.py +++ b/tools/perf/pmu-events/jevents.py @@ -37,6 +37,8 @@ _pending_metrics = [] _pending_metrics_tblname = None # Global BigCString shared by all structures. _bcs = None +# Map from the name of a metric group to a description of the group. +_metricgroups = {} # Order specific JsonEvent attributes will be visited. _json_event_attributes = [ # cmp_sevent related attributes. @@ -51,9 +53,9 @@ _json_event_attributes = [ # Attributes that are in pmu_metric rather than pmu_event. _json_metric_attributes = [ - 'metric_name', 'metric_group', 'metric_expr', 'metric_threshold', 'desc', - 'long_desc', 'unit', 'compat', 'metricgroup_no_group', 'aggr_mode', - 'event_grouping' + 'pmu', 'metric_name', 'metric_group', 'metric_expr', 'metric_threshold', + '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'] @@ -305,6 +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: @@ -391,11 +394,11 @@ def read_json_events(path: str, topic: str) -> Sequence[JsonEvent]: except BaseException as err: print(f"Exception processing {path}") raise - metrics: list[Tuple[str, metric.Expression]] = [] + metrics: list[Tuple[str, str, metric.Expression]] = [] for event in events: event.topic = topic if event.metric_name and '-' not in event.metric_name: - metrics.append((event.metric_name, event.metric_expr)) + metrics.append((event.pmu, event.metric_name, event.metric_expr)) updates = metric.RewriteMetricsInTermsOfOthers(metrics) if updates: for event in events: @@ -512,6 +515,17 @@ def preprocess_one_file(parents: Sequence[str], item: os.DirEntry) -> None: if not item.is_file() or not item.name.endswith('.json'): return + if item.name == 'metricgroups.json': + metricgroup_descriptions = json.load(open(item.path)) + for mgroup in metricgroup_descriptions: + assert len(mgroup) > 1, parents + description = f"{metricgroup_descriptions[mgroup]}\\000" + mgroup = f"{mgroup}\\000" + _bcs.add(mgroup) + _bcs.add(description) + _metricgroups[mgroup] = description + return + topic = get_topic(item.name) for event in read_json_events(item.path, topic): if event.name: @@ -548,7 +562,7 @@ def process_one_file(parents: Sequence[str], item: os.DirEntry) -> None: # Ignore other directories. If the file name does not have a .json # extension, ignore it. It could be a readme.txt for instance. - if not item.is_file() or not item.name.endswith('.json'): + if not item.is_file() or not item.name.endswith('.json') or item.name == 'metricgroups.json': return add_events_table_entries(item, get_topic(item.name)) @@ -911,6 +925,38 @@ int pmu_for_each_sys_metric(pmu_metric_iter_fn fn, void *data) } """) +def print_metricgroups() -> None: + _args.output_file.write(""" +static const int metricgroups[][2] = { +""") + for mgroup in sorted(_metricgroups): + description = _metricgroups[mgroup] + _args.output_file.write( + f'\t{{ {_bcs.offsets[mgroup]}, {_bcs.offsets[description]} }}, /* {mgroup} => {description} */\n' + ) + _args.output_file.write(""" +}; + +const char *describe_metricgroup(const char *group) +{ + int low = 0, high = (int)ARRAY_SIZE(metricgroups) - 1; + + while (low <= high) { + int mid = (low + high) / 2; + const char *mgroup = &big_c_string[metricgroups[mid][0]]; + int cmp = strcmp(mgroup, group); + + if (cmp == 0) { + return &big_c_string[metricgroups[mid][1]]; + } else if (cmp < 0) { + low = mid + 1; + } else { + high = mid - 1; + } + } + return NULL; +} +""") def main() -> None: global _args @@ -993,7 +1039,7 @@ struct compact_pmu_event { print_mapping_table(archs) print_system_mapping_table() - + print_metricgroups() if __name__ == '__main__': main() |