sched/cputime: Fix omitted ticks passed in parameter

Commit:

  f9bcf1e0 ("sched/cputime: Fix steal time accounting")

... fixes a leak on steal time accounting but forgets to account
the ticks passed in parameters, assuming there is only one to
take into account.

Let's consider that parameter back.
Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com>
Acked-by: NWanpeng Li <kernellwp@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Radim <rkrcmar@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wanpeng Li <wanpeng.li@hotmail.com>
Cc: linux-tip-commits@vger.kernel.org
Link: http://lkml.kernel.org/r/20160811125822.GB4214@lerougeSigned-off-by: NIngo Molnar <mingo@kernel.org>

kernel/sched/cputime.c

@@ -509,12 +509,13 @@ void account_process_tick(struct task_struct *p, int user_tick)
 void account_idle_ticks(unsigned long ticks)
 {
 	cputime_t cputime, steal;
+
 	if (sched_clock_irqtime) {
 		irqtime_account_idle_ticks(ticks);
 		return;
 	}
 
-	cputime = cputime_one_jiffy;
+	cputime = jiffies_to_cputime(ticks);
 	steal = steal_account_process_time(cputime);
 
 	if (steal >= cputime)