[PATCH v2 1/7] perf metricgroup: Always place duration_time last

Ian Rogers
2020-05-20T18:21:07Z

If a metric contains the duration_time event then the event is placed
outside of the metric's group of events. Rather than split the group,
make it so the duration_time is immediately after the group.

Signed-off-by: Ian Rogers <irogers@google.com>
---
tools/perf/util/metricgroup.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index a16f60da06ab..7a43ee0a2e40 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -410,8 +410,8 @@ static void metricgroup__add_metric_weak_group(struct strbuf *events,
struct expr_parse_ctx *ctx)
{
struct hashmap_entry *cur;
- size_t bkt, i = 0;
- bool no_group = false;
+ size_t bkt;
+ bool no_group = true, has_duration = false;

hashmap__for_each_entry((&ctx->ids), cur, bkt) {
pr_debug("found event %s\n", (const char *)cur->key);
@@ -421,20 +421,20 @@ static void metricgroup__add_metric_weak_group(struct strbuf *events,
* group.
*/
if (!strcmp(cur->key, "duration_time")) {
- if (i > 0)
- strbuf_addf(events, "}:W,");
- strbuf_addf(events, "duration_time");
- no_group = true;
+ has_duration = true;
continue;
}
strbuf_addf(events, "%s%s",
- i == 0 || no_group ? "{" : ",",
+ no_group ? "{" : ",",
(const char *)cur->key);
no_group = false;
- i++;
}
- if (!no_group)
+ if (!no_group) {
strbuf_addf(events, "}:W");
+ if (has_duration)
+ strbuf_addf(events, ",duration_time");
+ } else if (has_duration)
+ strbuf_addf(events, "duration_time");
}

static void metricgroup__add_metric_non_group(struct strbuf *events,
--
2.26.2.761.g0e0b3e54be-goog