[PATCH 12/14] perf tools: Add test_generic_metric function

Jiri Olsa
2020-05-24T22:43:10Z

Adding test_generic_metric that prepares and runs given metric
over the data from psswd struct runtime_stat object.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/util/stat-shadow.c | 14 ++++++++++++++
tools/perf/util/stat.h | 3 +++
2 files changed, 17 insertions(+)

diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c
index 27be7ce2fff4..8fdef47005e6 100644
--- a/tools/perf/util/stat-shadow.c
+++ b/tools/perf/util/stat-shadow.c
@@ -842,6 +842,20 @@ static void generic_metric(struct perf_stat_config *config,
expr__ctx_clear(&pctx);
}

+double test_generic_metric(struct metric_expr *mexp, int cpu, struct runtime_stat *st)
+{
+ struct expr_parse_ctx pctx;
+ double ratio;
+
+ if (prepare_metric(mexp->metric_events, &pctx, cpu, st) < 0)
+ return 0.;
+
+ if (expr__parse(&ratio, &pctx, mexp->metric_expr, 1))
+ return 0.;
+
+ return ratio;
+}
+
void perf_stat__print_shadow_stats(struct perf_stat_config *config,
struct evsel *evsel,
double avg, int cpu,
diff --git a/tools/perf/util/stat.h b/tools/perf/util/stat.h
index f75ae679eb28..6911c7249199 100644
--- a/tools/perf/util/stat.h
+++ b/tools/perf/util/stat.h
@@ -230,4 +230,7 @@ perf_evlist__print_counters(struct evlist *evlist,
struct target *_target,
struct timespec *ts,
int argc, const char **argv);
+
+struct metric_expr;
+double test_generic_metric(struct metric_expr *mexp, int cpu, struct runtime_stat *st);
#endif
--
2.25.4