add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/tools/perf/util/setns.c
..
..
@@ -1,4 +1,6 @@
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-#include "util.h"
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+// SPDX-License-Identifier: LGPL-2.1
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+
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+#include "namespaces.h"
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 #include <unistd.h>
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 #include <sys/syscall.h>
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