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Subject: Re: [RFC/PATCH 1/2] cpuidle: Allow idle-states to be disabled at
 start
To: Daniel Lezcano <daniel.lezcano@linaro.org>,
        "Gautham R. Shenoy" <ego@linux.vnet.ibm.com>,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        Michael Neuling <michael.neuling@au1.ibm.com>,
        Paul Mackerras <paulus@samba.org>,
        Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
References: <cover.1471557381.git.ego@linux.vnet.ibm.com>
 <48afad7788300482c047fc35e70ca8e4bf31a5ac.1471557381.git.ego@linux.vnet.ibm.com>
 <57BDB2D8.4080507@linaro.org>
Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
        Anton Blanchard <anton@samba.org>, linux-pm@vger.kernel.org
From: Balbir Singh <bsingharora@gmail.com>
Message-ID: <fe9a9667-cbbb-8fa2-5db0-2edd3220ca7b@gmail.com>
Date: Thu, 25 Aug 2016 00:48:38 +1000
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On 25/08/16 00:44, Daniel Lezcano wrote:
> On 08/19/2016 12:26 AM, Gautham R. Shenoy wrote:
>> From: "Gautham R. Shenoy" <ego@linux.vnet.ibm.com>
>>
>> Currently all the idle states registered by a cpu-idle driver are
>> enabled by default. This patch adds a mechanism which allows the
>> driver to hint if an idle-state should start in a disabled state. The
>> cpu-idle core will use this hint to appropriately initialize the
>> usage->disable knob of the CPU device idle state.
> 
> Why do you need to do that ?
> 

I think patch 2/2 explains the reason as it uses this infrastructure

Balbir Singh