2 files changed, 30 insertions, 0 deletions
diff --git a/tools/perf/arch/nds32/util/Build b/tools/perf/arch/nds32/util/Build
new file mode 100644
index 000000000..d0bc205fe
--- /dev/null
+++ b/tools/perf/arch/nds32/util/Build
@@ -0,0 +1 @@
+perf-y += header.o
diff --git a/tools/perf/arch/nds32/util/header.c b/tools/perf/arch/nds32/util/header.c
new file mode 100644
index 000000000..ef9dbdbe7
--- /dev/null
+++ b/tools/perf/arch/nds32/util/header.c
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (C) 2005-2017 Andes Technology Corporation
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <api/fs/fs.h>
+#include "header.h"
+
+#define STR_LEN 1024
+
+char *get_cpuid_str(struct perf_pmu *pmu)
+{
+	/* In nds32, we only have one cpu */
+	char *buf = NULL;
+	struct cpu_map *cpus;
+	const char *sysfs = sysfs__mountpoint();
+
+	if (!sysfs || !pmu || !pmu->cpus)
+		return NULL;
+
+	buf = malloc(STR_LEN);
+	if (!buf)
+		return NULL;
+
+	cpus = cpu_map__get(pmu->cpus);
+	sprintf(buf, "0x%x", cpus->nr - 1);
+	cpu_map__put(cpus);
+	return buf;
+}