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-rw-r--r--tools/perf/arch/nds32/util/Build1
-rw-r--r--tools/perf/arch/nds32/util/header.c29
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;
+}