linux-kernel - [patch v6 8/8] sched: remove blocked_load

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Message-Id: <1368199049-2798-9-git-send-email-alex.shi@intel.com>
Date:	Fri, 10 May 2013 23:17:29 +0800
From:	Alex Shi <alex.shi@...el.com>
To:	mingo@...hat.com, peterz@...radead.org, tglx@...utronix.de,
	akpm@...ux-foundation.org, bp@...en8.de, pjt@...gle.com,
	namhyung@...nel.org, efault@....de, morten.rasmussen@....com
Cc:	vincent.guittot@...aro.org, preeti@...ux.vnet.ibm.com,
	viresh.kumar@...aro.org, linux-kernel@...r.kernel.org,
	alex.shi@...el.com, mgorman@...e.de, riel@...hat.com,
	wangyun@...ux.vnet.ibm.com
Subject: [patch v6 8/8] sched: remove blocked_load_avg in tg

blocked_load_avg sometime is too heavy and far bigger than runnable load
avg. that make balance make wrong decision. So better don't consider it.

Signed-off-by: Alex Shi <alex.shi@...el.com>
---
 kernel/sched/fair.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 91e60ac..75c200c 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -1339,7 +1339,7 @@ static inline void __update_cfs_rq_tg_load_contrib(struct cfs_rq *cfs_rq,
 	struct task_group *tg = cfs_rq->tg;
 	s64 tg_contrib;
 
-	tg_contrib = cfs_rq->runnable_load_avg + cfs_rq->blocked_load_avg;
+	tg_contrib = cfs_rq->runnable_load_avg;
 	tg_contrib -= cfs_rq->tg_load_contrib;
 
 	if (force_update || abs64(tg_contrib) > cfs_rq->tg_load_contrib / 8) {
-- 
1.7.5.4

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