On 23.07.2014 18:31, Michel Dänzer wrote: > On 23.07.2014 18:25, Peter Zijlstra wrote: >> On Wed, Jul 23, 2014 at 10:28:19AM +0200, Peter Zijlstra wrote: >> >>> Of course, the other thing that patch did is clear sgp->power (now >>> sgc->capacity). >> >> Hmm, re-reading the thread there isn't a clear confirmation its this >> patch at all. Could you perhaps bisect this to either verify it is >> indeed that patch we're talking about: >> >> caffcdd8d27b ("sched: Do not zero sg->cpumask and sg->sgp->power in >> build_sched_groups()") >> >> or find which patch is causing this. > > It can take a long time for the problem to occur, so I need to run at > least for one or two days to be at least somewhat sure a given kernel is > not affected. > > I'll try reproducing the problem with your previous suggestions first,
Just happened again, with your robustness patch and setting sg->sgc->capacity = 0. > but if I manage to do that, I guess there's no alternative to bisecting... I hope the assembly output I sent earlier helps, I'm afraid bisecting this could be painful. -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Mesa and X developer -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/