Messages in this thread | | | Date | Thu, 13 Feb 2014 15:40:00 +0530 | From | Preeti U Murthy <> | Subject | Re: [PATCH V2 2/3] sched: Fix race in idle_balance() |
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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@linux.vnet.ibm.com> >
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