Do not call cpufreq trigger on other CPUs.

-ck

---
 kernel/sched/bfs.c       |   10 +---------
 kernel/sched/bfs_sched.h |   13 -------------
 2 files changed, 1 insertion(+), 22 deletions(-)

Index: linux-4.7-ck5/kernel/sched/bfs.c
===================================================================
--- linux-4.7-ck5.orig/kernel/sched/bfs.c	2016-09-23 08:33:01.317717573 +1000
+++ linux-4.7-ck5/kernel/sched/bfs.c	2016-09-23 08:33:01.314717591 +1000
@@ -1018,21 +1018,13 @@ void set_task_cpu(struct task_struct *p,
 	 */
 	smp_wmb();
 	if (p->on_rq) {
-		struct rq *rq;
+		struct rq *rq = task_rq(p);
 
-		/*
-		 * set_task_cpu can be set on other CPUs so call cpufreq_trigger
-		 * explicitly telling it what CPU is being updated as the value
-		 * of soft_affined has changed.
-		 */
-		rq = task_rq(p);
 		rq->soft_affined--;
 		update_load_avg(rq);
-		other_cpufreq_trigger(tcpu, grq.niffies, rq->load_avg);
 		rq = cpu_rq(cpu);
 		rq->soft_affined++;
 		update_load_avg(rq);
-		other_cpufreq_trigger(cpu, grq.niffies, rq->load_avg);
 	}
 	task_thread_info(p)->cpu = cpu;
 }
Index: linux-4.7-ck5/kernel/sched/bfs_sched.h
===================================================================
--- linux-4.7-ck5.orig/kernel/sched/bfs_sched.h	2016-09-23 08:33:01.317717573 +1000
+++ linux-4.7-ck5/kernel/sched/bfs_sched.h	2016-09-23 08:33:01.315717585 +1000
@@ -207,23 +207,10 @@ static inline void cpufreq_trigger(u64 t
        if (data)
                data->func(data, time, util, SCHED_CAPACITY_SCALE);
 }
-
-static inline void other_cpufreq_trigger(int cpu, u64 time, unsigned long util)
-{
-       struct update_util_data *data;
-
-       data = rcu_dereference_sched(*per_cpu_ptr(&cpufreq_update_util_data, cpu));
-       if (data)
-               data->func(data, time, util, SCHED_CAPACITY_SCALE);
-}
 #else
 static inline void cpufreq_trigger(u64 time, unsigned long util)
 {
 }
-
-static inline void other_cpufreq_trigger(int cpu, u64 time, unsigned long util)
-{
-}
 #endif /* CONFIG_CPU_FREQ */
 
 #ifdef arch_scale_freq_capacity