[Blackfin] arch: actually implement get_cycles function

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 11 insertions, 6 deletions

diff --git a/include/asm-blackfin/timex.h b/include/asm-blackfin/timex.h
index 828590117f51..22b0806161bb 100644
--- a/include/asm-blackfin/timex.h
+++ b/include/asm-blackfin/timex.h
@@ -1,18 +1,23 @@
-/* blackfin architecture timex specifications: Lineo Inc. 2001
+/*
+ * asm-blackfin/timex.h: cpu cycles!
  *
- * Based on: include/asm-m68knommu/timex.h
+ * Copyright 2004-2008 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
  */
 
-#ifndef _ASMBLACKFIN_TIMEX_H
-#define _ASMBLACKFIN_TIMEX_H
+#ifndef _ASM_BLACKFIN_TIMEX_H
+#define _ASM_BLACKFIN_TIMEX_H
 
 #define CLOCK_TICK_RATE 1000000 /* Underlying HZ */
 
-typedef unsigned long cycles_t;
+typedef unsigned long long cycles_t;
 
 static inline cycles_t get_cycles(void)
 {
-        return 0;
+        unsigned long tmp, tmp2;
+        __asm__("%0 = cycles; %1 = cycles2;" : "=d"(tmp), "=d"(tmp2));
+        return tmp | ((cycles_t)tmp2 << 32);
 }
 
 #endif