--- /dev/null
+#ifndef _ASM_X86_IST_H
+#define _ASM_X86_IST_H
+
+/*
+ * Include file for the interface to IST BIOS
+ * Copyright 2002 Andy Grover <andrew.grover@intel.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+
+#include <linux/types.h>
+
+struct ist_info {
+ __u32 signature;
+ __u32 command;
+ __u32 event;
+ __u32 perf_level;
+};
+
+#ifdef __KERNEL__
+
+extern struct ist_info ist_info;
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_X86_IST_H */