4 files changed, 11 insertions, 22 deletions

diff --git a/include/linux/sched.h b/include/linux/sched.h
index 68a0e84463a0..6f6c56f63c68 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -291,10 +291,14 @@ extern int runqueue_is_locked(int cpu);
 #if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
 extern void nohz_balance_enter_idle(int cpu);
 extern void set_cpu_sd_state_idle(void);
-extern int get_nohz_timer_target(void);
+extern int get_nohz_timer_target(int pinned);
 #else
 static inline void nohz_balance_enter_idle(int cpu) { }
 static inline void set_cpu_sd_state_idle(void) { }
+static inline int get_nohz_timer_target(int pinned)
+{
+        return smp_processor_id();
+}
 #endif
 
 /*
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 09094361dce5..d55092ceee29 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -168,19 +168,6 @@ struct hrtimer_clock_base *lock_hrtimer_base(const struct hrtimer *timer,
         }
 }
 
-
-/*
- * Get the preferred target CPU for NOHZ
- */
-static int hrtimer_get_target(int this_cpu, int pinned)
-{
-#ifdef CONFIG_NO_HZ_COMMON
-        if (!pinned && get_sysctl_timer_migration() && idle_cpu(this_cpu))
-                return get_nohz_timer_target();
-#endif
-        return this_cpu;
-}
-
 /*
  * With HIGHRES=y we do not migrate the timer when it is expiring
  * before the next event on the target cpu because we cannot reprogram
@@ -214,7 +201,7 @@ switch_hrtimer_base(struct hrtimer *timer, struct hrtimer_clock_base *base,
         struct hrtimer_clock_base *new_base;
         struct hrtimer_cpu_base *new_cpu_base;
         int this_cpu = smp_processor_id();
-        int cpu = hrtimer_get_target(this_cpu, pinned);
+        int cpu = get_nohz_timer_target(pinned);
         int basenum = base->index;
 
 again:
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index b46131ef6aab..c0339e206cc2 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -555,12 +555,15 @@ void resched_cpu(int cpu)
  * selecting an idle cpu will add more delays to the timers than intended
  * (as that cpu's timer base may not be uptodate wrt jiffies etc).
  */
-int get_nohz_timer_target(void)
+int get_nohz_timer_target(int pinned)
 {
         int cpu = smp_processor_id();
         int i;
         struct sched_domain *sd;
 
+        if (pinned || !get_sysctl_timer_migration() || !idle_cpu(cpu))
+                return cpu;
+
         rcu_read_lock();
         for_each_domain(cpu, sd) {
                 for_each_cpu(i, sched_domain_span(sd)) {
diff --git a/kernel/timer.c b/kernel/timer.c
index 8e503fec1fba..1d35ddadc045 100644
--- a/kernel/timer.c
+++ b/kernel/timer.c
@@ -760,12 +760,7 @@ __mod_timer(struct timer_list *timer, unsigned long expires,
 
         debug_activate(timer, expires);
 
-        cpu = smp_processor_id();
-
-#if defined(CONFIG_NO_HZ_COMMON) && defined(CONFIG_SMP)
-        if (!pinned && get_sysctl_timer_migration() && idle_cpu(cpu))
-                cpu = get_nohz_timer_target();
-#endif
+        cpu = get_nohz_timer_target(pinned);
         new_base = per_cpu(tvec_bases, cpu);
 
         if (base != new_base) {