v4.19.13 snapshot.
diff --git a/tools/perf/ui/util.h b/tools/perf/ui/util.h
new file mode 100644
index 0000000..5e44223
--- /dev/null
+++ b/tools/perf/ui/util.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _PERF_UI_UTIL_H_
+#define _PERF_UI_UTIL_H_ 1
+
+#include <stdarg.h>
+
+int ui__getch(int delay_secs);
+int ui__popup_menu(int argc, char * const argv[]);
+int ui__help_window(const char *text);
+int ui__dialog_yesno(const char *msg);
+int ui__question_window(const char *title, const char *text,
+ const char *exit_msg, int delay_secs);
+
+struct perf_error_ops {
+ int (*error)(const char *format, va_list args);
+ int (*warning)(const char *format, va_list args);
+};
+
+int perf_error__register(struct perf_error_ops *eops);
+int perf_error__unregister(struct perf_error_ops *eops);
+
+#endif /* _PERF_UI_UTIL_H_ */