update_blocked_averages in trigger_loadbalancer every 19ms instead

of every tick.
hamadmarri · Nov 14, 2021 · a178508 · a178508
1 parent 4989ab2
commit a178508
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Showing 2 changed files with 10 additions and 3 deletions.
diff --git a/kernel/sched/bs.c b/kernel/sched/bs.c
@@ -1058,7 +1058,16 @@ void trigger_load_balance(struct rq *this_rq)
 	if (unlikely(on_null_domain(this_rq) || !cpu_active(cpu_of(this_rq))))
 		return;
 
-	update_blocked_averages(this_rq->cpu);
+#ifdef CONFIG_TT_ACCOUNTING_STATS
+	if (time_after_eq(jiffies, this_rq->next_balance)) {
+		/* scale ms to jiffies */
+		unsigned long interval = msecs_to_jiffies(19);
+
+		this_rq->next_balance = jiffies + interval;
+		update_blocked_averages(this_rq->cpu);
+	}
+#endif
+
 	nohz_balancer_kick(this_rq);
 }
 

diff --git a/kernel/sched/bs_nohz.h b/kernel/sched/bs_nohz.h
@@ -686,6 +686,4 @@ static __latent_entropy void run_rebalance_domains(struct softirq_action *h)
 	 */
 	if (nohz_idle_balance(this_rq, idle))
 		return;
-
-	update_blocked_averages(this_rq->cpu);
 }
-Original file line number
+Diff line change
@@ Expand Up @@
     	 */
     	if (nohz_idle_balance(this_rq, idle))
     		return;
-    	update_blocked_averages(this_rq->cpu);
     }