1 files changed, 3 insertions, 8 deletions

diff --git a/arch/ia64/kernel/time.c b/arch/ia64/kernel/time.c
index 351df5850309..80ff9acc5edf 100644
--- a/arch/ia64/kernel/time.c
+++ b/arch/ia64/kernel/time.c
@@ -104,20 +104,15 @@ void vtime_task_switch(struct task_struct *prev)
 {
         struct thread_info *pi = task_thread_info(prev);
         struct thread_info *ni = task_thread_info(current);
-        cputime_t delta_stime;
-        __u64 now;
-
-        now = ia64_get_itc();
 
-        delta_stime = cycle_to_cputime(pi->ac_stime + (now - pi->ac_stamp));
         if (idle_task(smp_processor_id()) != prev)
-                account_system_time(prev, 0, delta_stime, delta_stime);
+                vtime_account_system(prev);
         else
-                account_idle_time(delta_stime);
+                vtime_account_idle(prev);
 
         vtime_account_user(prev);
 
-        pi->ac_stamp = ni->ac_stamp = now;
+        pi->ac_stamp = ni->ac_stamp;
         ni->ac_stime = ni->ac_utime = 0;
 }