Re: [Qemu-devel] [RFC] create a single workqueue for each vm to update vm irq routing table

Paolo Bonzini
2013-11-28T11:10:54Z

Il 28/11/2013 12:09, Gleb Natapov ha scritto:
> > - if there are no callbacks, but there are readers, synchronize_srcu
> > busy-loops for some time checking if the readers complete. After a
> > while (20 us for synchronize_srcu, 120 us for
> > synchronize_srcu_expedited) it gives up and starts using a workqueue to
> > poll every millisecond. This should never happen unless
>
> Unless what ? :) Unless reader is scheduled out?

Yes. Or unless my brain is scheduled out in the middle of a sentence.

Paolo