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diff --git a/src/tuning/tunable.h b/src/tuning/tunable.h
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+/*
+ * Copyright 2010, Intel Corporation
+ *
+ * This file is part of PowerTOP
+ *
+ * This program file is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program in a file named COPYING; if not, write to the
+ * Free Software Foundation, Inc,
+ * 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA
+ * or just google for it.
+ *
+ * Authors:
+ *	Arjan van de Ven <arjan@linux.intel.com>
+ */
+#ifndef _INCLUDE_GUARD_TUNABLE_H
+#define _INCLUDE_GUARD_TUNABLE_H
+
+#include <vector>
+
+#include "../lib.h"
+
+using namespace std;
+
+#define TUNE_GOOD    1
+#define TUNE_BAD     -1
+#define TUNE_UNFIXABLE -2
+#define TUNE_UNKNOWN 0
+#define TUNE_NEUTRAL 0
+
+class tunable {
+
+	char good_string[128];
+	char bad_string[128];
+	char neutral_string[128];
+protected:
+	char toggle_good[4096];
+	char toggle_bad[4096];
+public:
+	char desc[4096];
+	double score;
+
+	tunable(void);
+	tunable(const char *str, double _score, const char *good = "", const char *bad = "", const char *neutral ="");
+	virtual ~tunable() {};
+
+	virtual int good_bad(void) { return TUNE_NEUTRAL; }
+
+	virtual char *result_string(void)
+	{
+		switch (good_bad()) {
+		case TUNE_GOOD:
+			return good_string;
+		case TUNE_BAD:
+		case TUNE_UNFIXABLE:
+			return bad_string;
+		}
+		return neutral_string;
+	}
+
+
+	virtual const char *description(void) { return desc; };
+
+	virtual void toggle(void) { };
+
+	virtual const char *toggle_script(void) { return NULL; }
+};
+
+extern vector<class tunable *> all_tunables;
+extern vector<class tunable *> all_untunables;
+
+#endif