linux-kernel - Re: [PATCH 0/3] cpuidle: Rework the handling of the poll state

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Message-ID: <335d33b3-832a-1588-c007-16110dbef33e@linaro.org>
Date:   Tue, 29 Aug 2017 09:13:20 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Sudeep Holla <sudeep.holla@....com>
Cc:     Linux PM <linux-pm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Len Brown <len.brown@...el.com>,
        Linux ACPI <linux-acpi@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>
Subject: Re: [PATCH 0/3] cpuidle: Rework the handling of the poll state

On 28/08/2017 23:17, Rafael J. Wysocki wrote:
> On Thursday, August 24, 2017 11:48:19 AM CEST Sudeep Holla wrote:
>>
>> On 23/08/17 22:18, Rafael J. Wysocki wrote:
>>> Hi,
>>>
>>> On x86 the fist idle state is a polling one, but the way it is set up is far
>>> from straightforward and then it is avoided by governors in rather somewhat
>>> convoluted fashion.
>>>
>>> Make this more clear by explicitly flagging that state as "polling" and
>>> checking its flag where it needs to be avoided instead of using
>>> arch-dependent numbering of idle states (patch [1/3]), move the
>>> polling state code from driver.c to a separate C file (patch [2/3]) and
>>> move the initialization of it from the core to the relevant cpuidle drivers -
>>> ACPI and intel_idle (patch [3/3]).
>>>
>>
>> Tested this on ARM64 platform(both DT and ACPI/LPI) and everything
>> continues to work fine.
>> Tested-by: Sudeep Holla <sudeep.holla@....com>
> 
> Thanks Sudeep!
> 
> I haven't seen any more comments on this which I'm taking as a green light for
> it, so I'm going to queue it up for 4.14.

Acked-by: Daniel Lezcano <daniel.lezcano@...aro.org>


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