ARM: Realview/Versatile: separate out common sched_clock()

Provide a common sched_clock() implementation for Versatile and
Realview.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 0 insertions, 22 deletions

diff --git a/arch/arm/mach-versatile/core.c b/arch/arm/mach-versatile/core.c
index b68ddd349f12..490fc7597bb6 100644
--- a/arch/arm/mach-versatile/core.c
+++ b/arch/arm/mach-versatile/core.c
@@ -28,7 +28,6 @@
 #include <linux/amba/clcd.h>
 #include <linux/amba/pl061.h>
 #include <linux/amba/mmci.h>
-#include <linux/cnt32_to_63.h>
 #include <linux/io.h>
 
 #include <asm/clkdev.h>
@@ -227,27 +226,6 @@ void __init versatile_map_io(void)
         iotable_init(versatile_io_desc, ARRAY_SIZE(versatile_io_desc));
 }
 
-#define VERSATILE_REFCOUNTER    (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_24MHz_OFFSET)
-
-/*
- * This is the Versatile sched_clock implementation.  This has
- * a resolution of 41.7ns, and a maximum value of about 35583 days.
- *
- * The return value is guaranteed to be monotonic in that range as
- * long as there is always less than 89 seconds between successive
- * calls to this function.
- */
-unsigned long long sched_clock(void)
-{
-        unsigned long long v = cnt32_to_63(readl(VERSATILE_REFCOUNTER));
-
-        /* the <<1 gets rid of the cnt_32_to_63 top bit saving on a bic insn */
-        v *= 125<<1;
-        do_div(v, 3<<1);
-
-        return v;
-}
-
 
 #define VERSATILE_FLASHCTRL    (__io_address(VERSATILE_SYS_BASE) + VERSATILE_SYS_FLASH_OFFSET)