[PATCH v2 2/2] cpufreq/schedutil: add rt utilization tracking

From	Vincent Guittot <vincent.guittot@linaro.org>
Newsgroups	linux.kernel
Subject	[PATCH v2 2/2] cpufreq/schedutil: add rt utilization tracking
Date	2017-06-19 11:00 +0200
Message-ID	<tU0Hn-n6-3@gated-at.bofh.it> (permalink)
References	<tU0Hn-n6-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

add both cfs and rt utilization when selecting an OPP as rt can preempt and
steal cfs's running time
---
 kernel/sched/cpufreq_schedutil.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c
:if expand("%") == ""|browse confirm w|else|confirm w|endif
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;
 }
 
-- 
2.7.4

Back to linux.kernel | Previous | Next | Find similar | Unroll thread

Thread

[PATCH v2 2/2] cpufreq/schedutil: add rt utilization tracking Vincent Guittot <vincent.guittot@linaro.org> - 2017-06-19 11:00 +0200

csiph-web