timers: Move __run_timers() function

Move __run_timers() below __next_timer_interrupt() and next_pending_bucket()
in preparation for __run_timers() NOHZ optimization.

No functional change.
Signed-off-by: NAnna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Chris Mason <clm@fb.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: George Spelvin <linux@sciencehorizons.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160704094342.271872665@linutronix.deSigned-off-by: NIngo Molnar <mingo@kernel.org>

kernel/time/timer.c

@@ -1277,32 +1277,6 @@ static int collect_expired_timers(struct timer_base *base,
 	return levels;
 }
 
-/**
- * __run_timers - run all expired timers (if any) on this CPU.
- * @base: the timer vector to be processed.
- */
-static inline void __run_timers(struct timer_base *base)
-{
-	struct hlist_head heads[LVL_DEPTH];
-	int levels;
-
-	if (!time_after_eq(jiffies, base->clk))
-		return;
-
-	spin_lock_irq(&base->lock);
-
-	while (time_after_eq(jiffies, base->clk)) {
-
-		levels = collect_expired_timers(base, heads);
-		base->clk++;
-
-		while (levels--)
-			expire_timers(base, heads + levels);
-	}
-	base->running_timer = NULL;
-	spin_unlock_irq(&base->lock);
-}
-
 #ifdef CONFIG_NO_HZ_COMMON
 /*
  * Find the next pending bucket of a level. Search from @offset + @clk upwards
@@ -1472,6 +1446,32 @@ void update_process_times(int user_tick)
 	run_posix_cpu_timers(p);
 }
 
+/**
+ * __run_timers - run all expired timers (if any) on this CPU.
+ * @base: the timer vector to be processed.
+ */
+static inline void __run_timers(struct timer_base *base)
+{
+	struct hlist_head heads[LVL_DEPTH];
+	int levels;
+
+	if (!time_after_eq(jiffies, base->clk))
+		return;
+
+	spin_lock_irq(&base->lock);
+
+	while (time_after_eq(jiffies, base->clk)) {
+
+		levels = collect_expired_timers(base, heads);
+		base->clk++;
+
+		while (levels--)
+			expire_timers(base, heads + levels);
+	}
+	base->running_timer = NULL;
+	spin_unlock_irq(&base->lock);
+}
+
 /*
  * This function runs timers and the timer-tq in bottom half context.
  */