linux-kernel - sched: ARM: arch_scale_freq

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Message-ID: <CAKfTPtB3sLWq5fHOTrFg6vfHSKnz2i17oYx9Btr0u_tWV2bsjQ@mail.gmail.com>
Date:	Thu, 6 Oct 2011 13:36:21 +0200
From:	Vincent Guittot <vincent.guittot@...aro.org>
To:	linux-kernel@...r.kernel.org,
	LAK <linux-arm-kernel@...ts.infradead.org>,
	linaro-dev@...ts.linaro.org
Subject: sched: ARM: arch_scale_freq_power

I work to link the cpu_power of ARM cores to their frequency by using
arch_scale_freq_power. It's explained in the kernel that cpu_power is
used to distribute load on cpus and a cpu with more cpu_power will
pick up more load. The default value is SCHED_POWER_SCALE and I
increase the value if I want a cpu to have more load than another one.
Is there an advised range for cpu_power value as well as some time
scale constraints for updating the cpu_power value ?
I'm also wondering why this scheduler feature is currently disable by default ?

Regards,
Vincent
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