linux-kernel - Re: [PATCH 06/16] sched: SCHED

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Message-ID: <4F85ACA5.1050902@gmail.com>
Date:	Wed, 11 Apr 2012 18:09:09 +0200
From:	Juri Lelli <juri.lelli@...il.com>
To:	Steven Rostedt <rostedt@...dmis.org>
CC:	Hillf Danton <dhillf@...il.com>, peterz@...radead.org,
	tglx@...utronix.de, mingo@...hat.com, oleg@...hat.com,
	fweisbec@...il.com, darren@...art.com, johan.eker@...csson.com,
	p.faure@...tech.ch, linux-kernel@...r.kernel.org,
	claudio@...dence.eu.com, michael@...rulasolutions.com,
	Fabio Checconi <fchecconi@...il.com>,
	Tommaso Cucinotta <tommaso.cucinotta@...up.it>,
	Nicola Manica <nicola.manica@...i.unitn.it>,
	Luca Abeni <luca.abeni@...tn.it>,
	Dhaval Giani <dhaval.giani@...il.com>, hgu1972@...il.com,
	paulmck@...ux.vnet.ibm.com, Dario Faggioli <raistlin@...ux.it>,
	Insop Song <insop.song@...csson.com>, liming.wang@...driver.com
Subject: Re: [PATCH 06/16] sched: SCHED_DEADLINE push and pull logic

On 04/11/2012 06:00 PM, Steven Rostedt wrote:
> On Sun, 2012-04-08 at 22:20 +0200, Juri Lelli wrote:
>>>
>>>>>> +#ifdef CONFIG_SMP
>>>>>> +       /*
>>>>>> +        * In the unlikely case current and p have the same deadline
>>>>>> +        * let us try to decide what's the best thing to do...
>>>>>> +        */
>>>>>> +       if ((s64)(p->dl.deadline - rq->curr->dl.deadline) == 0&&
>>>>>> +           !need_resched())
>>>>>
>>>>> please recheck !need_resched(), say rq->curr need reschedule?
>>>>
>>>> Sorry, I don't get this..
>>>>
>>> Perhaps smp_processor_id() != rq->cpu
>>>
>>
>> need_resched is actually checked...
>>
>
> I guess what Hillf is trying to say is,
>
> s/!need_resched()/!test_tsk_need_resched(rq->curr)/
>

Yep, I finally got (and changed) it ;-).

Thanks,

- Juri
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