ia64: Reuse system and user vtime accounting functions on task switch

To avoid code duplication.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>

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;
 }