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Date: Tue, 18 Feb 2014 10:37:08 +0800 From: Alex Shi <alex.shi@...aro.org> To: mingo@...hat.com, peterz@...radead.org, morten.rasmussen@....com CC: vincent.guittot@...aro.org, daniel.lezcano@...aro.org, fweisbec@...il.com, linux@....linux.org.uk, tony.luck@...el.com, fenghua.yu@...el.com, james.hogan@...tec.com, alex.shi@...aro.org, jason.low2@...com, viresh.kumar@...aro.org, hanjun.guo@...aro.org, linux-kernel@...r.kernel.org, tglx@...utronix.de, akpm@...ux-foundation.org, arjan@...ux.intel.com, pjt@...gle.com, fengguang.wu@...el.com, linaro-kernel@...ts.linaro.org, wangyun@...ux.vnet.ibm.com Subject: Re: [PATCH v2 0/11] remove cpu_load in rq On 02/17/2014 09:55 AM, Alex Shi wrote: > The cpu_load decays on time according past cpu load of rq. The sched_avg also decays tasks' load on time. Now we has 2 kind decay for cpu_load. That is a kind of redundancy. And increase the system load by decay calculation. This patch try to remove the cpu_load decay. > > There are 5 load_idx used for cpu_load in sched_domain. busy_idx and idle_idx are not zero usually, but newidle_idx, wake_idx and forkexec_idx are all zero on every arch. A shortcut to remove cpu_Load decay in the first patch. just one line patch for this change. > > V2, > 1, This version do some tuning on load bias of target load, to maximum match current code logical. > 2, Got further to remove the cpu_load in rq. > 3, Revert the patch 'Limit sd->*_idx range on sysctl' since no needs Any comments for this? :) > > Any testing/comments are appreciated. > > This patch rebase on latest tip/master. > The git tree for this patchset at: > git@...hub.com:alexshi/power-scheduling.git noload > > Thanks > Alex > -- Thanks Alex -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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