Re: [PATCH V2 2/3] sched: Fix race in idle_balance()

[Preeti U Murthy]

Hi,

On 02/13/2014 01:15 PM, Alex Shi wrote:
> On 02/11/2014 07:11 PM, Daniel Lezcano wrote:
>> On 02/10/2014 10:24 AM, Preeti Murthy wrote:
>>> HI Daniel,
>>>
>>> Isn't the only scenario where another cpu can put an idle task on
>>> our runqueue,
>>
>> Well, I am not sure to understand what you meant, but I assume you are
>> asking if it is possible to have a task to be pulled when we are idle,
>> right ?
>>
>> This patch fixes the race when the current cpu is *about* to enter idle
>> when calling schedule().
> 
> Preeti said the she didn't see a possible to insert a task on the cpu.
> 
> I also did a quick check, maybe task come from wakeup path?

Yes this is possible. Thanks for pointing this :)

Reviewed-by: Preeti U Murthy <preeti@xxxxxxxxxxxxxxxxxx>
> 

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