[patch V2 10/10] timer: Always queue timers on the local CPU

[Thomas Gleixner]

The timer pull model is in place so we can remove the heuristics which try
to guess the best target CPU at enqueue/modification time.

All non pinned timers are queued on the local cpu in the seperate storage
and eventually pulled at expiry time to a remote cpu.

Signed-off-by: Richard Cochran <rcoch...@linutronix.de>
Signed-off-by: Anna-Maria Gleixner <anna-ma...@linutronix.de>
Signed-off-by: Thomas Gleixner <t...@linutronix.de>

---
 kernel/time/timer.c |   20 +-------------------
 1 file changed, 1 insertion(+), 19 deletions(-)

--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -857,18 +857,6 @@ static inline struct timer_base *get_tim
 }
 
 #ifdef CONFIG_NO_HZ_COMMON
-static inline struct timer_base *
-get_target_base(struct timer_base *base, unsigned tflags)
-{
-#ifdef CONFIG_SMP
-       if ((tflags & TIMER_PINNED) || !base->migration_enabled)
-               return get_timer_this_cpu_base(tflags);
-       return get_timer_cpu_base(tflags, get_nohz_timer_target());
-#else
-       return get_timer_this_cpu_base(tflags);
-#endif
-}
-
 static inline void forward_timer_base(struct timer_base *base)
 {
        unsigned long jnow = READ_ONCE(jiffies);
@@ -890,12 +878,6 @@ static inline void forward_timer_base(st
                base->clk = base->next_expiry;
 }
 #else
-static inline struct timer_base *
-get_target_base(struct timer_base *base, unsigned tflags)
-{
-       return get_timer_this_cpu_base(tflags);
-}
-
 static inline void forward_timer_base(struct timer_base *base) { }
 #endif
 
@@ -985,7 +967,7 @@ static inline int
        if (!ret && pending_only)
                goto out_unlock;
 
-       new_base = get_target_base(base, timer->flags);
+       new_base = get_timer_this_cpu_base(timer->flags);
 
        if (base != new_base) {
                /*