Re: [PREEMPT RT] SLUB and split softirq lock for v3.2-rt

Thomas Gleixner
2013-02-13T17:41:48Z

On Wed, 13 Feb 2013, Steven Rostedt wrote:

> On Wed, 2013-02-13 at 17:11 +0100, Sebastian Andrzej Siewior wrote:
> > 3.2-rt is a long term supported kernel, which lacks two RT features
> > from 3.6: SLUB support and the split softirq lock implementation.
> >
> > SLUB has a way better performance than SLAB on RT and the split
> > softirq lock implementation is necessary especially for realtime
> > networking applications.
> >
> > The following patch series backports these features to 3.2-rt.
> >
> > Steven, could you please apply these patches to a separate
> > 3.2-rt-features branch?
>
> Is it possible to separate these two features into two different patch
> sets. I would like to apply the softirq changes first, and then apply
> the slub changes.
>
> Although it looks as though the first half is softirq only 1-8, and the
> second half is slub related 9-16. If that's the case, I'll just pull in
> 1-8 first, play with them, and then do 9-16.

That's correct.