Re: [RFC v1 00/14] Implement call_rcu_lazy() and miscellaneous fixes

[Uladzislau Rezki <urezki@gmail.com>]

> On Thu, May 12, 2022 at 10:37 AM Uladzislau Rezki <urezki@gmail.com> wrote:
> >
> > > On Thu, May 12, 2022 at 03:56:37PM +0200, Uladzislau Rezki wrote:
> > > > Never mind. I port it into 5.10
> > >
> > > Oh, this is on mainline. Sorry about that. If you want I have a tree here for
> > > 5.10 , although that does not have the kfree changes, everything else is
> > > ditto.
> > > https://github.com/joelagnel/linux-kernel/tree/rcu-nocb-4
> > >
> > No problem. kfree_rcu two patches are not so important in this series.
> > So i have backported them into my 5.10 kernel because the latest kernel
> > is not so easy to up and run on my device :)
> 
> Actually I was going to write here, apparently some tests are showing
> kfree_rcu()->call_rcu_lazy() causing possible regression. So it is
> good to drop those for your initial testing!
> 
Yep, i dropped both. The one that make use of call_rcu_lazy() seems not
so important for kfree_rcu() because we do batch requests there anyway.
One thing that i would like to improve in kfree_rcu() is a better utilization
of page slots.

I will share my results either tomorrow or on Monday. I hope that is fine.

--
Uladzislau Rezki