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Date: Wed, 9 Sep 2015 11:45:26 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Morten Rasmussen <morten.rasmussen@....com>
Cc: Vincent Guittot <vincent.guittot@...aro.org>,
Dietmar Eggemann <dietmar.eggemann@....com>,
Steve Muckle <steve.muckle@...aro.org>,
"mingo@...hat.com" <mingo@...hat.com>,
"daniel.lezcano@...aro.org" <daniel.lezcano@...aro.org>,
"yuyang.du@...el.com" <yuyang.du@...el.com>,
"mturquette@...libre.com" <mturquette@...libre.com>,
"rjw@...ysocki.net" <rjw@...ysocki.net>,
Juri Lelli <Juri.Lelli@....com>,
"sgurrappadi@...dia.com" <sgurrappadi@...dia.com>,
"pang.xunlei@....com.cn" <pang.xunlei@....com.cn>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 5/6] sched/fair: Get rid of scaling utilization by
capacity_orig
On Wed, Sep 09, 2015 at 11:43:05AM +0200, Peter Zijlstra wrote:
> Sadly that makes the code worse; I get 14 mul instructions where
> previously I had 11.
FWIW I count like:
objdump -d defconfig-build/kernel/sched/fair.o |
awk '/<[^>]*>:/ { p=0 }
/<update_blocked_averages>:/ { p=1 }
{ if (p) print $0 }' |
cut -d\: -f2- | grep mul | wc -l
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