[PATCH 5/5] ARM: exynos: enable/disable cpuidle when cpu1 is down/up

Daniel Lezcano daniel.lezcano at linaro.org
Tue Jan 15 07:56:19 EST 2013

On 01/10/2013 11:33 PM, amit daniel kachhap wrote:
> On Thu, Jan 10, 2013 at 1:32 PM, Daniel Lezcano <daniel.lezcano at free.fr> wrote:
>> On 01/10/2013 09:07 PM, amit daniel kachhap wrote:
>>> Hi Daniel,
>> Hi Amit Daniel,
>>> This hotplug noifiers looks fine. I suppose it should add extra state
>>> C1 in cpu0. If it is done like below than for normal cases(when all
>>> cpu's are online) there wont be any statistics for C0 state
>> I guess you meant state 0 which is WFI, right ?
>> C0 state is the intel semantic for cpu fully turned on.
> Yes I meant C0 as wfi
>>> also which
>>> is required. Other patches look good.
>> Ok, that makes sense to have statistics even if they are only doing WFI.
>> Then the patch 4/5 is not ok, no ?
> yes I suppose patch 4 and patch 5 are related and depends how you
> frame patch 5. I think it is better to create C0/C1 sysfs and other
> things in the beginning because it is a filesystem call and may
> increase the cpu hotplug time which is not worth. May be if cpuidle
> framework exposes some API to enable/disable states then it is better.
> For patch 1,2 and 3,
> Acked-by: Amit Daniel Kachhap <amit.daniel at samsung.com>

Hi Kukjin,

is it possible to take these patches [1-3/5] ?

The patches [3-4/5] could be ignored.

  -- Daniel

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