1 files changed, 31 insertions, 0 deletions
diff --git a/tools/perf/ui/helpline.h b/tools/perf/ui/helpline.h
new file mode 100644
index 000000000..8f775a053
--- /dev/null
+++ b/tools/perf/ui/helpline.h
@@ -0,0 +1,31 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _PERF_UI_HELPLINE_H_
+#define _PERF_UI_HELPLINE_H_ 1
+
+#include <stdio.h>
+#include <stdarg.h>
+
+#include "../util/cache.h"
+
+struct ui_helpline {
+	void (*pop)(void);
+	void (*push)(const char *msg);
+	int  (*show)(const char *fmt, va_list ap);
+};
+
+extern struct ui_helpline *helpline_fns;
+
+void ui_helpline__init(void);
+
+void ui_helpline__pop(void);
+void ui_helpline__push(const char *msg);
+void ui_helpline__vpush(const char *fmt, va_list ap);
+void ui_helpline__fpush(const char *fmt, ...);
+void ui_helpline__puts(const char *msg);
+void ui_helpline__printf(const char *fmt, ...);
+int  ui_helpline__vshow(const char *fmt, va_list ap);
+
+extern char ui_helpline__current[512];
+extern char ui_helpline__last_msg[];
+
+#endif /* _PERF_UI_HELPLINE_H_ */