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diff --git a/include/mach/task_info.h b/include/mach/task_info.h
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+/* 
+ * Mach Operating System
+ * Copyright (c) 1993-1987 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/*
+ *	Machine-independent task information structures and definitions.
+ *
+ *	The definitions in this file are exported to the user.  The kernel
+ *	will translate its internal data structures to these structures
+ *	as appropriate.
+ *
+ */
+
+#ifndef	_MACH_TASK_INFO_H_
+#define	_MACH_TASK_INFO_H_
+
+#include <mach/machine/vm_types.h>
+#include <mach/time_value.h>
+
+/*
+ *	Generic information structure to allow for expansion.
+ */
+typedef	integer_t	*task_info_t;		/* varying array of int */
+
+#define	TASK_INFO_MAX	(1024)		/* maximum array size */
+typedef	integer_t	task_info_data_t[TASK_INFO_MAX];
+
+/*
+ *	Currently defined information structures.
+ */
+#define	TASK_BASIC_INFO		1	/* basic information */
+
+struct task_basic_info {
+	integer_t	suspend_count;	/* suspend count for task */
+	integer_t	base_priority;	/* base scheduling priority */
+	vm_size_t	virtual_size;	/* number of virtual pages */
+	vm_size_t	resident_size;	/* number of resident pages */
+	time_value_t	user_time;	/* total user run time for
+					   terminated threads */
+	time_value_t	system_time;	/* total system run time for
+					   terminated threads */
+};
+
+typedef struct task_basic_info		task_basic_info_data_t;
+typedef struct task_basic_info		*task_basic_info_t;
+#define	TASK_BASIC_INFO_COUNT	\
+		(sizeof(task_basic_info_data_t) / sizeof(natural_t))
+
+
+#define	TASK_EVENTS_INFO	2	/* various event counts */
+
+struct task_events_info {
+	natural_t		faults;		/* number of page faults */
+	natural_t		zero_fills;	/* number of zero fill pages */
+	natural_t		reactivations;	/* number of reactivated pages */
+	natural_t		pageins;	/* number of actual pageins */
+	natural_t		cow_faults;	/* number of copy-on-write faults */
+	natural_t		messages_sent;	/* number of messages sent */
+	natural_t		messages_received; /* number of messages received */
+};
+typedef struct task_events_info		task_events_info_data_t;
+typedef struct task_events_info		*task_events_info_t;
+#define	TASK_EVENTS_INFO_COUNT	\
+		(sizeof(task_events_info_data_t) / sizeof(natural_t))
+
+#define	TASK_THREAD_TIMES_INFO	3	/* total times for live threads -
+					   only accurate if suspended */
+
+struct task_thread_times_info {
+	time_value_t	user_time;	/* total user run time for
+					   live threads */
+	time_value_t	system_time;	/* total system run time for
+					   live threads */
+};
+
+typedef struct task_thread_times_info	task_thread_times_info_data_t;
+typedef struct task_thread_times_info	*task_thread_times_info_t;
+#define	TASK_THREAD_TIMES_INFO_COUNT	\
+		(sizeof(task_thread_times_info_data_t) / sizeof(natural_t))
+
+/*
+ * Flavor definitions for task_ras_control
+ */
+#define TASK_RAS_CONTROL_PURGE_ALL			0
+#define TASK_RAS_CONTROL_PURGE_ONE			1
+#define TASK_RAS_CONTROL_PURGE_ALL_AND_INSTALL_ONE	2
+#define TASK_RAS_CONTROL_INSTALL_ONE			3
+
+#endif	/* _MACH_TASK_INFO_H_ */
+