1 files changed, 45 insertions, 0 deletions
diff --git a/tools/perf/arch/arm64/util/pmu.c b/tools/perf/arch/arm64/util/pmu.c
new file mode 100644
index 000000000000..2a4eab2d160e
--- /dev/null
+++ b/tools/perf/arch/arm64/util/pmu.c
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <internal/cpumap.h>
+#include "../../../util/cpumap.h"
+#include "../../../util/header.h"
+#include "../../../util/pmu.h"
+#include "../../../util/pmus.h"
+#include <api/fs/fs.h>
+#include <math.h>
+
+const struct pmu_metrics_table *pmu_metrics_table__find(void)
+{
+	struct perf_pmu *pmu;
+
+	/* Metrics aren't currently supported on heterogeneous Arm systems */
+	if (perf_pmus__num_core_pmus() > 1)
+		return NULL;
+
+	/* Doesn't matter which one here because they'll all be the same */
+	pmu = perf_pmus__find_core_pmu();
+	if (pmu)
+		return perf_pmu__find_metrics_table(pmu);
+
+	return NULL;
+}
+
+double perf_pmu__cpu_slots_per_cycle(void)
+{
+	char path[PATH_MAX];
+	unsigned long long slots = 0;
+	struct perf_pmu *pmu = perf_pmus__find_core_pmu();
+
+	if (pmu) {
+		perf_pmu__pathname_scnprintf(path, sizeof(path),
+					     pmu->name, "caps/slots");
+		/*
+		 * The value of slots is not greater than 32 bits, but
+		 * filename__read_int can't read value with 0x prefix,
+		 * so use filename__read_ull instead.
+		 */
+		filename__read_ull(path, &slots);
+	}
+
+	return slots ? (double)slots : NAN;
+}