[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [xen-unstable test] 56759: regressions - FAIL
>>> On 29.05.15 at 18:32, <ian.campbell@xxxxxxxxxx> wrote: > On Wed, 2015-05-27 at 17:04 +0100, Ian Campbell wrote: >> Looking at the netback side though it seems like netback_remove is >> switching to state=Closed _before_ it calls kobject_uevent(..., >> KOBJ_OFFLINE) and it is this which generates the call to netback_uevent >> which tries and fails to read script and produces the error message. > > I've just sent out a patch which fixes this issue, although I am still > at a loss to explain why we have only started seeing this now and only > under such specific circumstances. > >> I'm still slightly concerned that perhaps the new spinlock stuff has >> some sort of bad behaviour either on arndale specifically or more >> generally for ARM systems which has pushed this particular case over the >> edge. > > I did run some benchmarks (hackbench+fio on arndale domU and hackbench > on midway dom0) with and without the ticket locks and the results were > close enough that I'm basically not too worried that there is something > wrong with the ticket locks on ARM. > > It still niggles somewhat not to have a good theory about why this > change had this seemingly random effect, but I've not got any good ideas > for avenues to explore and I've got other things to do so I think I'll > leave it at that. So should we then re-instate the ticket lock patches? Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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