[RFC][PATCH 0/7] OMAP4 cpuidle cleanup

Daniel Lezcano daniel.lezcano at linaro.org
Wed Mar 21 09:51:33 UTC 2012


On 03/21/2012 10:36 AM, Shilimkar, Santosh wrote:
> On Wed, Mar 21, 2012 at 2:57 PM, Daniel Lezcano
> <daniel.lezcano at linaro.org>  wrote:
>> This patchset is a proposition to improve a bit the code.
>> The changes are code cleanup and does not change the behavior of the
>> driver itself.
>>
> Thanks. Will have a look at your series.

Cool, thanks.

>> A couple a things call my intention. Why the cpuidle device is set for cpu0 only
> Because the mainline code CPUIDLE is supported along with CPUhotplug.
> This is going to change though with Couple CPUIDLE and corresponding
> OMAP updates.

Ok, thanks for the information. I will look deeper. What happens to cpu1 
when it is online and has nothing to do ?

>> and why the WFI is not used ?
>>
> I didn't get this question. Do you mean the generic WFI?

yes.

> If yes, then, it's mainly because OMAP need additional
> custom barriers.

Ah, ok. I am not sure if it is possible but that may be cool if we can 
call cpu_do_idle instead with additional barrier.


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