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-rw-r--r--tools/perf/util/namespaces.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/util/namespaces.h b/tools/perf/util/namespaces.h
index 15a5a276c478..004430c0de93 100644
--- a/tools/perf/util/namespaces.h
+++ b/tools/perf/util/namespaces.h
@@ -13,6 +13,10 @@
#include <linux/refcount.h>
#include <linux/types.h>
+#ifndef HAVE_SETNS_SUPPORT
+int setns(int fd, int nstype);
+#endif
+
struct namespaces_event;
struct namespaces {
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