linux-kernel - [Query-CPUIdle]: Not much activity in C0 state

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Date:	Tue, 27 Aug 2013 15:53:01 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Daniel Lezcano <daniel.lezcano@...aro.org>
Cc:	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Lists linaro-kernel <linaro-kernel@...ts.linaro.org>,
	Suresh.Srinivasan@....com,
	Amit Kucheria <amit.kucheria@...aro.org>,
	Sudeep KarkadaNagesha <Sudeep.KarkadaNagesha@....com>
Subject: [Query-CPUIdle]: Not much activity in C0 state

Hi Guys,

I was trying to run following on my thinkpad:

watch -n1 cat /sys/devices/system/cpu/cpu*/cpuidle/state*/usage

I can see lots of activities on State 1-4, but not much on state 0..
I thought we should enter this state as soon as we come out to
non-idle state.. And so this count must be changing quite rapidly.

Is this a bug?

--
viresh
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