Blackfin: initial perf_event support

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

arch/blackfin/Kconfig

@@ -24,11 +24,13 @@ config BLACKFIN
 	select HAVE_FUNCTION_TRACER
 	select HAVE_FUNCTION_TRACE_MCOUNT_TEST
 	select HAVE_IDE
+	select HAVE_IRQ_WORK
 	select HAVE_KERNEL_GZIP if RAMKERNEL
 	select HAVE_KERNEL_BZIP2 if RAMKERNEL
 	select HAVE_KERNEL_LZMA if RAMKERNEL
 	select HAVE_KERNEL_LZO if RAMKERNEL
 	select HAVE_OPROFILE
+	select HAVE_PERF_EVENTS
 	select ARCH_WANT_OPTIONAL_GPIOLIB
 	select HAVE_GENERIC_HARDIRQS
 	select GENERIC_ATOMIC64

arch/blackfin/include/asm/bfin_pfmon.h

+/*
+ * Blackfin Performance Monitor definitions
+ *
+ * Copyright 2005-2011 Analog Devices Inc.
+ *
+ * Licensed under the ADI BSD license or GPL-2 (or later).
+ */
+
+#ifndef __ASM_BFIN_PFMON_H__
+#define __ASM_BFIN_PFMON_H__
+
+/* PFCTL Masks */
+#define PFMON_MASK	0xff
+#define PFCEN_MASK	0x3
+#define PFCEN_DISABLE	0x0
+#define PFCEN_ENABLE_USER	0x1
+#define PFCEN_ENABLE_SUPV	0x2
+#define PFCEN_ENABLE_ALL	(PFCEN_ENABLE_USER | PFCEN_ENABLE_SUPV)
+
+#define PFPWR_P	0
+#define PEMUSW0_P	2
+#define PFCEN0_P	3
+#define PFMON0_P	5
+#define PEMUSW1_P	13
+#define PFCEN1_P	14
+#define PFMON1_P	16
+#define PFCNT0_P	24
+#define PFCNT1_P	25
+
+#define PFPWR	(1 << PFPWR_P)
+#define PEMUSW(n, x)	((x) << ((n) ? PEMUSW1_P : PEMUSW0_P))
+#define PEMUSW0	PEMUSW(0, 1)
+#define PEMUSW1	PEMUSW(1, 1)
+#define PFCEN(n, x)	((x) << ((n) ? PFCEN1_P : PFCEN0_P))
+#define PFCEN0	PFCEN(0, PFCEN_MASK)
+#define PFCEN1	PFCEN(1, PFCEN_MASK)
+#define PFCNT(n, x)	((x) << ((n) ? PFCNT1_P : PFCNT0_P))
+#define PFCNT0	PFCNT(0, 1)
+#define PFCNT1	PFCNT(1, 1)
+#define PFMON(n, x)	((x) << ((n) ? PFMON1_P : PFMON0_P))
+#define PFMON0	PFMON(0, PFMON_MASK)
+#define PFMON1	PFMON(1, PFMON_MASK)
+
+#endif

arch/blackfin/include/asm/perf_event.h

+#define MAX_HWEVENTS 2

arch/blackfin/kernel/Makefile

@@ -33,6 +33,7 @@ obj-$(CONFIG_EARLY_PRINTK)           += shadow_console.o
 obj-$(CONFIG_STACKTRACE)             += stacktrace.o
 obj-$(CONFIG_DEBUG_VERBOSE)          += trace.o
 obj-$(CONFIG_BFIN_PSEUDODBG_INSNS)   += pseudodbg.o
+obj-$(CONFIG_PERF_EVENTS)            += perf_event.o
 
 # the kgdb test puts code into L2 and without linker
 # relaxation, we need to force long calls to/from it