linux-kernel - [PATCH RFC v5 11/13] perf metricgroup: Support printing metric groups for system PMUs

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Message-ID: <1604666153-4187-12-git-send-email-john.garry@huawei.com>
Date:   Fri, 6 Nov 2020 20:35:51 +0800
From:   John Garry <john.garry@...wei.com>
To:     <acme@...nel.org>, <will@...nel.org>, <mark.rutland@....com>,
        <jolsa@...hat.com>, <irogers@...gle.com>, <leo.yan@...aro.org>,
        <peterz@...radead.org>, <mingo@...hat.com>,
        <alexander.shishkin@...ux.intel.com>, <namhyung@...nel.org>,
        <mathieu.poirier@...aro.org>
CC:     <linuxarm@...wei.com>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <qiangqing.zhang@....com>,
        <zhangshaokun@...ilicon.com>, <linux-imx@....com>,
        <kjain@...ux.ibm.com>, John Garry <john.garry@...wei.com>
Subject: [PATCH RFC v5 11/13] perf metricgroup: Support printing metric groups for system PMUs

Currently printing metricgroups for core- or uncore-based events matched
by CPUID is supported.

Extend this for system events.

Signed-off-by: John Garry <john.garry@...wei.com>
---
 tools/perf/util/metricgroup.c | 64 ++++++++++++++++++++++++++++++++---
 1 file changed, 60 insertions(+), 4 deletions(-)

diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
index 64fbb96eb7b5..e0445ebf59e5 100644
--- a/tools/perf/util/metricgroup.c
+++ b/tools/perf/util/metricgroup.c
@@ -559,6 +559,49 @@ static int metricgroup__print_pmu_event(struct pmu_event *pe,
 	return 0;
 }
 
+struct metricgroup_print_sys_idata {
+	struct strlist *metriclist;
+	bool metricgroups;
+	char *filter;
+	bool raw;
+	bool details;
+	struct rblist *groups;
+};
+
+typedef int (*metricgroup_sys_event_iter_fn)(struct pmu_event *pe, void *);
+
+struct metricgroup_iter_data {
+	metricgroup_sys_event_iter_fn fn;
+	void *data;
+};
+
+static int metricgroup__sys_event_iter(struct pmu_event *pe, void *data)
+{
+	struct metricgroup_iter_data *d = data;
+	struct perf_pmu *pmu = NULL;
+
+	if (!pe->metric_expr || !pe->compat)
+		return 0;
+
+	while ((pmu = perf_pmu__scan(pmu))) {
+
+		if (!pmu->id || strcmp(pmu->id, pe->compat))
+			continue;
+
+		return d->fn(pe, d->data);
+	}
+
+	return 0;
+}
+
+static int metricgroup__print_sys_event_iter(struct pmu_event *pe, void *data)
+{
+	struct metricgroup_print_sys_idata *d = data;
+
+	return metricgroup__print_pmu_event(pe, d->metricgroups, d->filter, d->raw,
+				     d->details, d->groups, d->metriclist);
+}
+
 void metricgroup__print(bool metrics, bool metricgroups, char *filter,
 			bool raw, bool details)
 {
@@ -569,9 +612,6 @@ void metricgroup__print(bool metrics, bool metricgroups, char *filter,
 	struct rb_node *node, *next;
 	struct strlist *metriclist = NULL;
 
-	if (!map)
-		return;
-
 	if (!metricgroups) {
 		metriclist = strlist__new(NULL, NULL);
 		if (!metriclist)
@@ -582,7 +622,7 @@ void metricgroup__print(bool metrics, bool metricgroups, char *filter,
 	groups.node_new = mep_new;
 	groups.node_cmp = mep_cmp;
 	groups.node_delete = mep_delete;
-	for (i = 0; ; i++) {
+	for (i = 0; map; i++) {
 		pe = &map->table[i];
 
 		if (!pe->name && !pe->metric_group && !pe->metric_name)
@@ -595,6 +635,22 @@ void metricgroup__print(bool metrics, bool metricgroups, char *filter,
 			return;
 	}
 
+	{
+		struct metricgroup_iter_data data = {
+			.fn = metricgroup__print_sys_event_iter,
+			.data = (void *) &(struct metricgroup_print_sys_idata){
+				.metriclist = metriclist,
+				.metricgroups = metricgroups,
+				.filter = filter,
+				.raw = raw,
+				.details = details,
+				.groups = &groups,
+			},
+		};
+
+		pmu_for_each_sys_event(metricgroup__sys_event_iter, &data);
+	}
+
 	if (!filter || !rblist__empty(&groups)) {
 		if (metricgroups && !raw)
 			printf("\nMetric Groups:\n\n");
-- 
2.26.2