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Date: Fri, 14 Mar 2008 23:47:05 +0100 From: "Dmitry Adamushko" <dmitry.adamushko@...il.com> To: "Hiroshi Shimamoto" <h-shimamoto@...jp.nec.com> Cc: "Peter Zijlstra" <peterz@...radead.org>, "Ingo Molnar" <mingo@...e.hu>, linux-kernel@...r.kernel.org, linux-rt-users@...r.kernel.org, hpj@...la.net, stable <stable@...nel.org> Subject: Re: [PATCH] sched: fix race in schedule On 14/03/2008, Hiroshi Shimamoto <h-shimamoto@...jp.nec.com> wrote: > > [ ... ] > > >> But maybe there is something esle that would be exposed by the > >> 'rq->curr = rq->idle' manipulation... I can't provide examples right > >> now though (I need to think on it). > > > > I share your concerns, I don't really like it either. Just spewing out > > ideas here - bad ideas it seems :-/ > > > > Ingo also suggested moving the balance calls right before > > deactivate_task(), but that gives a whole other set of head-aches. > > > > > Well, what will we do about this issue? > I see you're thinking to fix inconsistency in scheduler, right? > I agree about it. > > However, I don't think it's good to remain this issue long time in > the -stable kernel. > > Could you please let me know what I can do? IMHO, the safest solution for the time being (and esp. for -stable) would be to proceed with Hiroshi's patch. It looks safe and it does fix a real problem. > > Hiroshi Shimamoto > -- Best regards, Dmitry Adamushko -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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