[PATCH 05/19] perf metric: Add macros for iterating map events

Jiri Olsa
2020-07-19T18:13:52Z

Adding following macros to iterate events and metric:
map_for_each_event(__pe, __idx, __map)
- iterates over all pmu_events_map events
map_for_each_metric(__pe, __idx, __map, __metric)
- iterates over all metrics that match __metric argument

and use it in metricgroup__add_metric function. Macros
will be be used from other places in following changes.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/util/metricgroup.c | 77 ++++++++++++++++++-----------------
1 file changed, 40 insertions(+), 37 deletions(-)

diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index df0356ec120d..b37008fc253c 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -614,6 +614,17 @@ static int __metricgroup__add_metric(struct list_head *group_list,
return 0;
}

+#define map_for_each_event(__pe, __idx, __map) \
+ for (__idx = 0, __pe = &__map->table[__idx]; \
+ __pe->name || __pe->metric_group || __pe->metric_name; \
+ __pe = &__map->table[++__idx])
+
+#define map_for_each_metric(__pe, __idx, __map, __metric) \
+ map_for_each_event(__pe, __idx, __map) \
+ if (__pe->metric_expr && \
+ (match_metric(__pe->metric_group, __metric) || \
+ match_metric(__pe->metric_name, __metric)))
+
static int metricgroup__add_metric(const char *metric, bool metric_no_group,
struct strbuf *events,
struct list_head *group_list,
@@ -624,49 +635,41 @@ static int metricgroup__add_metric(const char *metric, bool metric_no_group,
int i, ret;
bool has_match = false;

- for (i = 0; ; i++) {
- pe = &map->table[i];
-
- if (!pe->name && !pe->metric_group && !pe->metric_name) {
- /* End of pmu events. */
- if (!has_match)
- return -EINVAL;
- break;
- }
- if (!pe->metric_expr)
- continue;
- if (match_metric(pe->metric_group, metric) ||
- match_metric(pe->metric_name, metric)) {
- has_match = true;
- pr_debug("metric expr %s for %s\n", pe->metric_expr, pe->metric_name);
-
- if (!strstr(pe->metric_expr, "?")) {
- ret = __metricgroup__add_metric(group_list,
- pe,
- metric_no_group,
- 1);
- if (ret)
- return ret;
- } else {
- int j, count;
+ map_for_each_metric(pe, i, map, metric) {
+ pr_debug("metric expr %s for %s\n", pe->metric_expr, pe->metric_name);
+ has_match = true;
+
+ if (!strstr(pe->metric_expr, "?")) {
+ ret = __metricgroup__add_metric(group_list,
+ pe,
+ metric_no_group,
+ 1);
+ if (ret)
+ return ret;
+ } else {
+ int j, count;

- count = arch_get_runtimeparam();
+ count = arch_get_runtimeparam();

- /* This loop is added to create multiple
- * events depend on count value and add
- * those events to group_list.
- */
+ /* This loop is added to create multiple
+ * events depend on count value and add
+ * those events to group_list.
+ */

- for (j = 0; j < count; j++) {
- ret = __metricgroup__add_metric(
- group_list, pe,
- metric_no_group, j);
- if (ret)
- return ret;
- }
+ for (j = 0; j < count; j++) {
+ ret = __metricgroup__add_metric(
+ group_list, pe,
+ metric_no_group, j);
+ if (ret)
+ return ret;
}
}
}
+
+ /* End of pmu events. */
+ if (!has_match)
+ return -EINVAL;
+
list_for_each_entry(eg, group_list, nd) {
if (events->len > 0)
strbuf_addf(events, ",");
--
2.25.4