linux-kernel - [PATCH RFC v3 12/12] perf metricgroup: Support adding metrics for system PMUs

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Message-ID: <1588852671-61996-13-git-send-email-john.garry@huawei.com>
Date:   Thu, 7 May 2020 19:57:51 +0800
From:   John Garry <john.garry@...wei.com>
To:     <peterz@...radead.org>, <mingo@...hat.com>, <acme@...nel.org>,
        <mark.rutland@....com>, <alexander.shishkin@...ux.intel.com>,
        <jolsa@...hat.com>, <namhyung@...nel.org>
CC:     <will@...nel.org>, <ak@...ux.intel.com>, <linuxarm@...wei.com>,
        <linux-kernel@...r.kernel.org>, <qiangqing.zhang@....com>,
        <irogers@...gle.com>, <robin.murphy@....com>,
        <zhangshaokun@...ilicon.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        John Garry <john.garry@...wei.com>
Subject: [PATCH RFC v3 12/12] perf metricgroup: Support adding metrics for system PMUs

Currently only adding metrics for core- or uncore-based events is
supported. Extend this for system events.

Signed-off-by: John Garry <john.garry@...wei.com>
---
 tools/perf/util/metricgroup.c | 39 +++++++++++++++++++++++++++++++++++----
 1 file changed, 35 insertions(+), 4 deletions(-)

diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index ecf14aa01a59..4062bb33912a 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -598,6 +598,25 @@ static int metricgroup__add_metric_pmu_event(struct pmu_event *pe,
 	return 0;
 }
 
+struct metricgroup_add_iter_data {
+	const char *metric;
+	struct strbuf *events;
+	struct list_head *group_list;
+	int *ret;
+};
+
+static int metricgroup__add_metric_sys_event_iter(struct pmu_event *pe,
+						  void *data)
+{
+	struct metricgroup_add_iter_data *d = data;
+
+	if (!match_pe_metric(pe, d->metric))
+		return 0;
+
+	return (*d->ret = metricgroup__add_metric_pmu_event(pe, d->events,
+							    d->group_list));
+}
+
 static int metricgroup__add_metric(const char *metric, struct strbuf *events,
 				   struct list_head *group_list)
 {
@@ -605,10 +624,7 @@ static int metricgroup__add_metric(const char *metric, struct strbuf *events,
 	struct pmu_event *pe;
 	int i, ret = -EINVAL;
 
-	if (!map)
-		return 0;
-
-	for (i = 0; ; i++) {
+	for (i = 0; map; i++) {
 		pe = &map->table[i];
 
 		if (!pe->name && !pe->metric_group && !pe->metric_name)
@@ -623,6 +639,21 @@ static int metricgroup__add_metric(const char *metric, struct strbuf *events,
 				return ret;
 		}
 	}
+
+	{
+		struct metricgroup_iter_data data = {
+			.fn = metricgroup__add_metric_sys_event_iter,
+			.data = (void *) &(struct metricgroup_add_iter_data){
+				.metric = metric,
+				.events = events,
+				.group_list = group_list,
+				.ret = &ret,
+			},
+		};
+
+		pmu_for_each_sys_event(metricgroup__sys_event_iter, &data);
+	}
+
 	return ret;
 }
 
-- 
2.16.4