diff mbox series

[2/2] cpufreq/schedutil: add rt utilization tracking

Message ID 1495616452-7582-3-git-send-email-vincent.guittot@linaro.org
State Superseded
Headers show
Series track rt rq utilization | expand

Commit Message

Vincent Guittot May 24, 2017, 9 a.m. UTC 
Add both cfs_rq and rt_rq's utilization when selecting an OPP for cfs task
as rt task can preempt and steal cfs's running time.
This prevent frequency drops when rt tasks steal running time to cfs tasks
which appear lower than they are.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>

---
 kernel/sched/cpufreq_schedutil.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
2.7.4
diff mbox series

Patch

diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c
index 622eed1..bc292b92 100644
--- a/kernel/sched/cpufreq_schedutil.c
+++ b/kernel/sched/cpufreq_schedutil.c
@@ -164,7 +164,7 @@  static void sugov_get_util(unsigned long *util, unsigned long *max)
 
 	cfs_max = arch_scale_cpu_capacity(NULL, smp_processor_id());
 
-	*util = min(rq->cfs.avg.util_avg, cfs_max);
+	*util = min(rq->cfs.avg.util_avg + rq->rt.avg.util_avg, cfs_max);
 	*max = cfs_max;
 }