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diff --git a/include/asm-ppc64/pmc.h b/include/asm-ppc64/pmc.h
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+/*
+ * pmc.h
+ * Copyright (C) 2004 David Gibson, IBM Corporation
+ *
+ * This program 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#ifndef _PPC64_PMC_H
+#define _PPC64_PMC_H
+
+#include <asm/ptrace.h>
+
+typedef void (*perf_irq_t)(struct pt_regs *);
+
+int reserve_pmc_hardware(perf_irq_t new_perf_irq);
+void release_pmc_hardware(void);
+
+#endif /* _PPC64_PMC_H */
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