1 files changed, 94 insertions, 14 deletions

diff --git a/tools/perf/pmu-events/empty-pmu-events.c b/tools/perf/pmu-events/empty-pmu-events.c
index 480e8f0d30c8..a938b74cf487 100644
--- a/tools/perf/pmu-events/empty-pmu-events.c
+++ b/tools/perf/pmu-events/empty-pmu-events.c
@@ -11,7 +11,7 @@
 #include <string.h>
 #include <stddef.h>
 
-static const struct pmu_event pme_test_soc_cpu[] = {
+static const struct pmu_event pmu_events__test_soc_cpu[] = {
 	{
 		.name = "l3_cache_rd",
 		.event = "event=0x40",
@@ -106,6 +106,14 @@ static const struct pmu_event pme_test_soc_cpu[] = {
 		.topic = "branch",
 	},
 	{
+		.name = 0,
+		.event = 0,
+		.desc = 0,
+	},
+};
+
+static const struct pmu_metric pmu_metrics__test_soc_cpu[] = {
+	{
 		.metric_expr	= "1 / IPC",
 		.metric_name	= "CPI",
 	},
@@ -170,9 +178,8 @@ static const struct pmu_event pme_test_soc_cpu[] = {
 		.metric_name	= "L1D_Cache_Fill_BW",
 	},
 	{
-		.name = 0,
-		.event = 0,
-		.desc = 0,
+		.metric_expr = 0,
+		.metric_name = 0,
 	},
 };
 
@@ -181,6 +188,11 @@ struct pmu_events_table {
 	const struct pmu_event *entries;
 };
 
+/* Struct used to make the PMU metric table implementation opaque to callers. */
+struct pmu_metrics_table {
+	const struct pmu_metric *entries;
+};
+
 /*
  * Map a CPU to its table of PMU events. The CPU is identified by the
  * cpuid field, which is an arch-specific identifier for the CPU.
@@ -192,7 +204,8 @@ struct pmu_events_table {
 struct pmu_events_map {
 	const char *arch;
 	const char *cpuid;
-	const struct pmu_events_table table;
+	const struct pmu_events_table event_table;
+	const struct pmu_metrics_table metric_table;
 };
 
 /*
@@ -203,12 +216,14 @@ static const struct pmu_events_map pmu_events_map[] = {
 	{
 		.arch = "testarch",
 		.cpuid = "testcpu",
-		.table = { pme_test_soc_cpu },
+		.event_table = { pmu_events__test_soc_cpu },
+		.metric_table = { pmu_metrics__test_soc_cpu },
 	},
 	{
 		.arch = 0,
 		.cpuid = 0,
-		.table = { 0 },
+		.event_table = { 0 },
+		.metric_table = { 0 },
 	},
 };
 
@@ -254,9 +269,7 @@ static const struct pmu_sys_events pmu_sys_event_tables[] = {
 int pmu_events_table_for_each_event(const struct pmu_events_table *table, pmu_event_iter_fn fn,
 				    void *data)
 {
-	for (const struct pmu_event *pe = &table->entries[0];
-	     pe->name || pe->metric_group || pe->metric_name;
-	     pe++) {
+	for (const struct pmu_event *pe = &table->entries[0]; pe->name; pe++) {
 		int ret = fn(pe, table, data);
 
 		if (ret)
@@ -265,7 +278,19 @@ int pmu_events_table_for_each_event(const struct pmu_events_table *table, pmu_ev
 	return 0;
 }
 
-const struct pmu_events_table *perf_pmu__find_table(struct perf_pmu *pmu)
+int pmu_metrics_table_for_each_metric(const struct pmu_metrics_table *table, pmu_metric_iter_fn fn,
+				      void *data)
+{
+	for (const struct pmu_metric *pm = &table->entries[0]; pm->metric_expr; pm++) {
+		int ret = fn(pm, table, data);
+
+		if (ret)
+			return ret;
+	}
+	return 0;
+}
+
+const struct pmu_events_table *perf_pmu__find_events_table(struct perf_pmu *pmu)
 {
 	const struct pmu_events_table *table = NULL;
 	char *cpuid = perf_pmu__getcpuid(pmu);
@@ -285,7 +310,35 @@ const struct pmu_events_table *perf_pmu__find_table(struct perf_pmu *pmu)
 			break;
 
 		if (!strcmp_cpuid_str(map->cpuid, cpuid)) {
-			table = &map->table;
+			table = &map->event_table;
+			break;
+		}
+	}
+	free(cpuid);
+	return table;
+}
+
+const struct pmu_metrics_table *perf_pmu__find_metrics_table(struct perf_pmu *pmu)
+{
+	const struct pmu_metrics_table *table = NULL;
+	char *cpuid = perf_pmu__getcpuid(pmu);
+	int i;
+
+	/* on some platforms which uses cpus map, cpuid can be NULL for
+	 * PMUs other than CORE PMUs.
+	 */
+	if (!cpuid)
+		return NULL;
+
+	i = 0;
+	for (;;) {
+		const struct pmu_events_map *map = &pmu_events_map[i++];
+
+		if (!map->cpuid)
+			break;
+
+		if (!strcmp_cpuid_str(map->cpuid, cpuid)) {
+			table = &map->metric_table;
 			break;
 		}
 	}
@@ -299,17 +352,39 @@ const struct pmu_events_table *find_core_events_table(const char *arch, const ch
 	     tables->arch;
 	     tables++) {
 		if (!strcmp(tables->arch, arch) && !strcmp_cpuid_str(tables->cpuid, cpuid))
-			return &tables->table;
+			return &tables->event_table;
+	}
+	return NULL;
+}
+
+const struct pmu_metrics_table *find_core_metrics_table(const char *arch, const char *cpuid)
+{
+	for (const struct pmu_events_map *tables = &pmu_events_map[0];
+	     tables->arch;
+	     tables++) {
+		if (!strcmp(tables->arch, arch) && !strcmp_cpuid_str(tables->cpuid, cpuid))
+			return &tables->metric_table;
 	}
 	return NULL;
 }
 
 int pmu_for_each_core_event(pmu_event_iter_fn fn, void *data)
 {
+	for (const struct pmu_events_map *tables = &pmu_events_map[0]; tables->arch; tables++) {
+		int ret = pmu_events_table_for_each_event(&tables->event_table, fn, data);
+
+		if (ret)
+			return ret;
+	}
+	return 0;
+}
+
+int pmu_for_each_core_metric(pmu_metric_iter_fn fn, void *data)
+{
 	for (const struct pmu_events_map *tables = &pmu_events_map[0];
 	     tables->arch;
 	     tables++) {
-		int ret = pmu_events_table_for_each_event(&tables->table, fn, data);
+		int ret = pmu_metrics_table_for_each_metric(&tables->metric_table, fn, data);
 
 		if (ret)
 			return ret;
@@ -340,3 +415,8 @@ int pmu_for_each_sys_event(pmu_event_iter_fn fn, void *data)
 	}
 	return 0;
 }
+
+int pmu_for_each_sys_metric(pmu_metric_iter_fn fn __maybe_unused, void *data __maybe_unused)
+{
+	return 0;
+}