[PATCH v5 05/10] cpufreq/schedutil: get max utilization

Vincent Guittot
2018-05-25T13:14:27Z

Now that we have both the dl class bandwidth requirement and the dl class
utilization, we can use the max of the 2 values when agregating the
utilization of the CPU.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
---
kernel/sched/sched.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 4526ba6..0eb07a8 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -2194,7 +2194,11 @@ static inline void cpufreq_update_util(struct rq *rq, unsigned int flags) {}
#ifdef CONFIG_CPU_FREQ_GOV_SCHEDUTIL
static inline unsigned long cpu_util_dl(struct rq *rq)
{
- return (rq->dl.running_bw * SCHED_CAPACITY_SCALE) >> BW_SHIFT;
+ unsigned long util = (rq->dl.running_bw * SCHED_CAPACITY_SCALE) >> BW_SHIFT;
+
+ util = max_t(unsigned long, util, READ_ONCE(rq->avg_dl.util_avg));
+
+ return util;
}

static inline unsigned long cpu_util_cfs(struct rq *rq)
--
2.7.4