linux-kernel - [PATCH v2 0/3] sched/fair: Skip attach and detach for new group task in task_move_group

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Message-Id: <1464647577-23057-1-git-send-email-yuyang.du@intel.com>
Date:	Tue, 31 May 2016 06:32:53 +0800
From:	Yuyang Du <yuyang.du@...el.com>
To:	peterz@...radead.org, mingo@...nel.org,
	linux-kernel@...r.kernel.org
Cc:	bsegall@...gle.com, pjt@...gle.com, morten.rasmussen@....com,
	vincent.guittot@...aro.org, dietmar.eggemann@....com,
	Yuyang Du <yuyang.du@...el.com>
Subject: [PATCH v2 0/3] sched/fair: Skip attach and detach for new group task in task_move_group_fair()

Hi Peter,

Vincent reported this problem, which is there for a while.

The first patch is cleanup as well as paving the way to the fix.

Regarding the fix in the second patch, it seems the vruntime part
in the detach and attach does not make sense for new task too, so
I also avoided it.

Thanks,
Yuyang

--
Yuyang Du (3):
  sched/fair: Clean up attach_entity_load_avg()
  sched/fair: Skip detach and attach new group task
  sched/fair: Add inline to detach_entity_load_evg()

 kernel/sched/auto_group.c |    2 +-
 kernel/sched/core.c       |    8 +++---
 kernel/sched/fair.c       |   61 ++++++++++++++++++++++++---------------------
 kernel/sched/sched.h      |    4 +--
 4 files changed, 40 insertions(+), 35 deletions(-)

-- 
1.7.9.5