FRV: Add basic performance counter support

Add basic performance counter support to the FRV arch.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/frv/Kconfig

@@ -7,6 +7,7 @@ config FRV
 	default y
 	select HAVE_IDE
 	select HAVE_ARCH_TRACEHOOK
+	select HAVE_PERF_COUNTERS
 
 config ZONE_DMA
 	bool

arch/frv/include/asm/perf_counter.h

@@ -0,0 +1,17 @@
+/* FRV performance counter support
+ *
+ * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#ifndef _ASM_PERF_COUNTER_H
+#define _ASM_PERF_COUNTER_H
+
+#define PERF_COUNTER_INDEX_OFFSET	0
+
+#endif /* _ASM_PERF_COUNTER_H */

arch/frv/lib/Makefile

@@ -5,4 +5,4 @@
 lib-y := \
 	__ashldi3.o __lshrdi3.o __muldi3.o __ashrdi3.o __negdi2.o __ucmpdi2.o \
 	checksum.o memcpy.o memset.o atomic-ops.o atomic64-ops.o \
-	outsl_ns.o outsl_sw.o insl_ns.o insl_sw.o cache.o
+	outsl_ns.o outsl_sw.o insl_ns.o insl_sw.o cache.o perf_counter.o

arch/frv/lib/perf_counter.c

@@ -0,0 +1,19 @@
+/* Performance counter handling
+ *
+ * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+
+#include <linux/perf_counter.h>
+
+/*
+ * mark the performance counter as pending
+ */
+void set_perf_counter_pending(void)
+{
+}