[RFC PATCH 14/30 v3] ppc clock accumulate fix

[Steven Rostedt]

The following is a quick and dirty fix for powerpc so it includes
cycle_accumulated in its calculation. It relies on the fact that the
powerpc clocksource is a 64bit counter (don't have to worry about
multiple overflows), so the subtraction should be safe.

Signed-off-by: John Stultz <johnstul@xxxxxxxxxx>
Signed-off-by: Steven Rostedt <srostedt@xxxxxxxxxx>
---
 arch/powerpc/kernel/time.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Index: linux-compile.git/arch/powerpc/kernel/time.c
===================================================================
--- linux-compile.git.orig/arch/powerpc/kernel/time.c	2008-01-14 13:13:43.000000000 -0500
+++ linux-compile.git/arch/powerpc/kernel/time.c	2008-01-14 13:14:13.000000000 -0500
@@ -773,7 +773,8 @@ void update_vsyscall(struct timespec *wa
 	stamp_xsec = (u64) xtime.tv_nsec * XSEC_PER_SEC;
 	do_div(stamp_xsec, 1000000000);
 	stamp_xsec += (u64) xtime.tv_sec * XSEC_PER_SEC;
-	update_gtod(clock->cycle_last, stamp_xsec, t2x);
+	update_gtod(clock->cycle_last-clock->cycle_accumulated,
+		    stamp_xsec, t2x);
 }
 
 void update_vsyscall_tz(void)

-- 
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/