linux-kernel - [RFC PATCH 0/3] Aggregate task utilization only on root cfs

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Date:	Wed,  1 Jun 2016 20:39:19 +0100
From:	Dietmar Eggemann <dietmar.eggemann@....com>
To:	Peter Zijlstra <peterz@...radead.org>, linux-kernel@...r.kernel.org
Cc:	Vincent Guittot <vincent.guittot@...aro.org>,
	Ben Segall <bsegall@...gle.com>,
	Morten Rasmussen <morten.rasmussen@....com>,
	Yuyang Du <yuyang.du@...el.com>
Subject: [RFC PATCH 0/3] Aggregate task utilization only on root cfs_rq

This is an alternative approach to '[RFC PATCH v2] sched: reflect
sched_entity movement into task_group's utilization' which requires
'[RFC PATCH] sched: fix hierarchical order in rq->leaf_cfs_rq_list'

The patch-set doesn't currently handle the impact of cfs throttling on
utilization.

[patch 1] sched/fair: Aggregate task utilization only on root cfs_rq

 Prevent the utilization signal maintenance for se/cfs_rq representing
 task groups other than root task group.

[patch 2] sched/fair: Sync se with root cfs_rq

 Make sure that the se (of a task) is in sync with the root cfs_rq

[patch 3] sched/fair: Change @running of __update_load_avg() to
          @update_util

 Pass the information whether utilization (besides load) has to be
 maintained for the container element of @sa.

Dietmar Eggemann (3):
  sched/fair: Aggregate task utilization only on root cfs_rq
  sched/fair: Sync se with root cfs_rq
  sched/fair: Change @running of __update_load_avg() to @update_util

 kernel/sched/fair.c | 81 ++++++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 61 insertions(+), 20 deletions(-)

-- 
1.9.1