linux-kernel - [PATCH 07/10] perf tools: Collect other metrics in struct metric

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Date:   Fri, 26 Jun 2020 21:47:17 +0200
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Michael Petlan <mpetlan@...hat.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        John Garry <john.garry@...wei.com>,
        "Paul A. Clarke" <pc@...ibm.com>,
        Stephane Eranian <eranian@...gle.com>,
        Ian Rogers <irogers@...gle.com>
Subject: [PATCH 07/10] perf tools: Collect other metrics in struct metric_expr

Add 'other' metrics into struct metric_expr object,
so they are accessible when computing the metric.

Storing just name and expression itself, so the metric
can be resolved and computed.

Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
 tools/perf/util/metricgroup.c | 27 +++++++++++++++++++++++++++
 tools/perf/util/metricgroup.h |  6 ++++++
 2 files changed, 33 insertions(+)

diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index f88fd667cc78..a5d5dcc1b805 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -83,6 +83,7 @@ static void metric_event_delete(struct rblist *rblist __maybe_unused,
 	struct metric_expr *expr, *tmp;
 
 	list_for_each_entry_safe(expr, tmp, &me->head, nd) {
+		free(expr->metric_other);
 		free(expr);
 	}
 
@@ -243,6 +244,7 @@ static int metricgroup__setup_events(struct list_head *groups,
 
 	list_for_each_entry (eg, groups, nd) {
 		struct evsel **metric_events;
+		struct metric_other *other = NULL;
 
 		metric_events = calloc(sizeof(void *),
 				hashmap__size(&eg->pctx.ids) + 1);
@@ -274,6 +276,31 @@ static int metricgroup__setup_events(struct list_head *groups,
 			free(metric_events);
 			break;
 		}
+
+		/*
+		 * Collect and store collected 'other' expressions
+		 * for metric processing.
+		 */
+		if (eg->other_cnt) {
+			struct eother *eo;
+
+			other = zalloc(sizeof(struct metric_other) * (eg->other_cnt + 1));
+			if (!other) {
+				ret = -ENOMEM;
+				free(metric_events);
+				free(other);
+				break;
+			}
+
+			i = 0;
+			list_for_each_entry(eo, &eg->other, list) {
+				other[i].metric_name = eo->metric_name;
+				other[i].metric_expr = eo->metric_expr;
+				i++;
+			}
+		};
+
+		expr->metric_other = other;
 		expr->metric_expr = eg->metric_expr;
 		expr->metric_name = eg->metric_name;
 		expr->metric_unit = eg->metric_unit;
diff --git a/tools/perf/util/metricgroup.h b/tools/perf/util/metricgroup.h
index 8315bd1a7da4..3a1e320cb2d3 100644
--- a/tools/perf/util/metricgroup.h
+++ b/tools/perf/util/metricgroup.h
@@ -18,12 +18,18 @@ struct metric_event {
 	struct list_head head; /* list of metric_expr */
 };
 
+struct metric_other {
+	const char *metric_name;
+	const char *metric_expr;
+};
+
 struct metric_expr {
 	struct list_head nd;
 	const char *metric_expr;
 	const char *metric_name;
 	const char *metric_unit;
 	struct evsel **metric_events;
+	struct metric_other *metric_other;
 	int runtime;
 };
 
-- 
2.25.4