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Subject[PATCH 3/3] perf tools metric: Don't include duration_time in group
Date
From: Andi Kleen <ak@linux.intel.com>

The Memory_BW metric generates groups including duration_time,
which maps to a software event.

For some reason this makes the group always not count.

Always put duration_time outside a group when generating metrics.
It's always the same time, so no need to group it.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
tools/perf/util/metricgroup.c | 19 +++++++++++++++++--
1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index 1c85c9624c58..17ec05e17e7b 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -410,6 +410,7 @@ static int metricgroup__add_metric(const char *metric, struct strbuf *events,
const char **ids;
int idnum;
struct egroup *eg;
+ bool no_group = false;

pr_debug("metric expr %s for %s\n", pe->metric_expr, pe->metric_name);

@@ -420,11 +421,25 @@ static int metricgroup__add_metric(const char *metric, struct strbuf *events,
strbuf_addf(events, ",");
for (j = 0; j < idnum; j++) {
pr_debug("found event %s\n", ids[j]);
+ /*
+ * Duration time maps to a software event and can make
+ * groups not count. Always use it outside a
+ * group.
+ */
+ if (!strcmp(ids[j], "duration_time")) {
+ if (j > 0)
+ strbuf_addf(events, "}:W,");
+ strbuf_addf(events, "duration_time");
+ no_group = true;
+ continue;
+ }
strbuf_addf(events, "%s%s",
- j == 0 ? "{" : ",",
+ j == 0 || no_group ? "{" : ",",
ids[j]);
+ no_group = false;
}
- strbuf_addf(events, "}:W");
+ if (!no_group)
+ strbuf_addf(events, "}:W");

eg = malloc(sizeof(struct egroup));
if (!eg) {
--
2.20.1
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