lkml.org 
[lkml]   [2015]   [Jul]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v10 3/7] sched: Implement update_blocked_averages() for CONFIG_FAIR_GROUP_SCHED=n
Date
The load and the util of idle cpus must be updated periodically in
order to decay the blocked part.

If CONFIG_FAIR_GROUP_SCHED is not set, the load and util of idle cpus
are not decayed and stay at the values set before becoming idle.

Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org>
Reviewed-by: Yuyang Du <yuyang.du@intel.com>
---
kernel/sched/fair.c | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 452c932..3e9bccf 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5877,6 +5877,16 @@ static unsigned long task_h_load(struct task_struct *p)
#else
static inline void update_blocked_averages(int cpu)
{
+ struct rq *rq = cpu_rq(cpu);
+ struct cfs_rq *cfs_rq = &rq->cfs;
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&rq->lock, flags);
+ update_rq_clock(rq);
+
+ update_cfs_rq_load_avg(cfs_rq_clock_task(cfs_rq), cfs_rq);
+
+ raw_spin_unlock_irqrestore(&rq->lock, flags);
}

static unsigned long task_h_load(struct task_struct *p)
--
2.1.4


\
 
 \ /
  Last update: 2015-07-15 10:21    [W:0.132 / U:1.860 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site