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-rw-r--r--arch/um/include/shared/timetravel.h22
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/um/include/shared/timetravel.h b/arch/um/include/shared/timetravel.h
new file mode 100644
index 0000000000..e5c3d69f1b
--- /dev/null
+++ b/arch/um/include/shared/timetravel.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019-2021 Intel Corporation
+ */
+#ifndef _UM_TIME_TRAVEL_H_
+#define _UM_TIME_TRAVEL_H_
+
+enum time_travel_mode {
+ TT_MODE_OFF,
+ TT_MODE_BASIC,
+ TT_MODE_INFCPU,
+ TT_MODE_EXTERNAL,
+};
+
+#if defined(UML_CONFIG_UML_TIME_TRAVEL_SUPPORT) || \
+ defined(CONFIG_UML_TIME_TRAVEL_SUPPORT)
+extern enum time_travel_mode time_travel_mode;
+#else
+#define time_travel_mode TT_MODE_OFF
+#endif /* (UML_)CONFIG_UML_TIME_TRAVEL_SUPPORT */
+
+#endif /* _UM_TIME_TRAVEL_H_ */