linux-kernel - [PATCH v3 0/3] optimization, clean-up about fair.c

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Date:	Tue,  6 Aug 2013 17:36:40 +0900
From:	Joonsoo Kim <iamjoonsoo.kim@....com>
To:	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-kernel@...r.kernel.org, Mike Galbraith <efault@....de>,
	Paul Turner <pjt@...gle.com>, Alex Shi <alex.shi@...el.com>,
	Preeti U Murthy <preeti@...ux.vnet.ibm.com>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Morten Rasmussen <morten.rasmussen@....com>,
	Namhyung Kim <namhyung@...nel.org>,
	Joonsoo Kim <js1304@...il.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: [PATCH v3 0/3] optimization, clean-up about fair.c

Patch 1 is for removing one division operation with multiplication.
Patch 2,3 is for clean-up related to load_balance(), there is improvement
in terms of code size and readability may be also improved.

Feel free to give a comment for this patchset.

It's tested on v3.10.
On v3.11-rc3, it can be compiled properly.

* Change from v2
[2/3]: set initial value 1 to should_balance in rebalance_domains()
	as Vincent commented
[3/3]: not overwrite sum_weighted_load to represent load_per_task.
	Instead, use newly load_per_task as Preeti commented

* Change from v1
Remove 2 patches, because I'm not sure they are right.

Joonsoo Kim (3):
  sched: remove one division operation in find_buiest_queue()
  sched: factor out code to should_we_balance()
  sched: clean-up struct sd_lb_stat

 kernel/sched/fair.c |  326 +++++++++++++++++++++++++--------------------------
 1 file changed, 162 insertions(+), 164 deletions(-)

-- 
1.7.9.5

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