sched: avoid unnecessary multiplication and division

Avoid unnecessary multiplication and division when load scaling factor
is 1024.

Change-Id: If3cb63a77feaf49cc69ddec7f41cc3c1cabbfc5a
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index fa04d61ad70a..183dca8f05d8 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1034,8 +1034,10 @@ static inline u64 scale_load_to_cpu(u64 task_load, int cpu)
 {
 	struct rq *rq = cpu_rq(cpu);
 
-	task_load *= (u64)rq->load_scale_factor;
-	task_load /= 1024;
+	if (rq->load_scale_factor != 1024) {
+		task_load *= (u64)rq->load_scale_factor;
+		task_load /= 1024;
+	}
 
 	return task_load;
 }