Re: RCU red-black tree (was: Re: [PATCH 4/6] kvm tools: Add rwlock wrapper)

Sasha Levin
2011-05-31T13:20:39Z

On Tue, 2011-05-31 at 15:09 +0200, Ingo Molnar wrote:
> * Sasha Levin <levinsasha928@gmail.com> wrote:
>
> > I've started working on converting our MMIO code to use RCU rbtree.
>
> Well, why would we want to switch the MMIO code away from the brlock
> right now? mmio tree reconfigurations are very, very rare.
>
> Won't something like the qcow cache be more suitable for that? That
> has both frequent read and write activities.

We don't have a qcow cache at the moment :)

It was either the MMIO or the ioport tree. We don't have to pull them
into our master tree either - it's mostly a proof of concept I'm doing
on a separate tree.

--

Sasha.