diff -r be0bfd58d574 xen/common/sched_credit.c
--- a/xen/common/sched_credit.c	Wed Jun 24 19:45:56 2009 +0100
+++ b/xen/common/sched_credit.c	Thu Jul 02 22:28:47 2009 +0100
@@ -1340,8 +1340,7 @@
 
     spc = CSCHED_PCPU(smp_processor_id());
 
-    set_timer(&spc->ticker, now + MILLISECS(CSCHED_MSECS_PER_TICK)
-            - now % MILLISECS(CSCHED_MSECS_PER_TICK) );
+    set_timer(&spc->ticker, now + MILLISECS(CSCHED_MSECS_PER_TICK));
 }
 
 struct scheduler sched_credit_def = {