On Thu, Aug 11, 2016 at 11:03:47AM -0700, Steve Muckle wrote:

On Wed, Aug 10, 2016 at 03:49:07AM +0200, Rafael J. Wysocki wrote:

quoted

Index: linux-pm/kernel/sched/fair.c
===================================================================

--- linux-pm.orig/kernel/sched/fair.c
+++ linux-pm/kernel/sched/fair.c

@@ -2875,11 +2875,8 @@ static inline void update_tg_load_avg(st
 
 static inline void cfs_rq_util_change(struct cfs_rq *cfs_rq)
 {
-	struct rq *rq = rq_of(cfs_rq);
-	int cpu = cpu_of(rq);
-
-	if (cpu == smp_processor_id() && &rq->cfs == cfs_rq) {
-		unsigned long max = rq->cpu_capacity_orig;
+	if (&this_rq()->cfs == cfs_rq) {
+		struct rq *rq = rq_of(cfs_rq);
 
 		/*
 		 * There are a few boundary cases this might miss but it should

@@ -2897,8 +2894,8 @@ static inline void cfs_rq_util_change(st
 		 *
 		 * See cpu_util().
 		 */
-		cpufreq_update_util(rq_clock(rq),
-				    min(cfs_rq->avg.util_avg, max), max);
+		if (cpu_of(rq) == smp_processor_id())

Isn't this test against smp_processor_id() redundant since
this_rq()->cfs == cfs_rq?

Sorry, I see this is modified in the next patch.