Re: [ANNOUNCE] v5.6.2-rt1

[Juri Lelli]

On 15/04/20 13:12, Sebastian Andrzej Siewior wrote:
> On 2020-04-08 09:00:13 [+0200], Juri Lelli wrote:
> > Hi,
> Hi,
> 
> > On 03/04/20 19:04, Sebastian Andrzej Siewior wrote:
> > > Dear RT folks!
> > > 
> > > I'm pleased to announce the v5.6.2-rt1 patch set. 
> > > 
> > > Changes since v5.4.28-rt19:
> > > 
> > >   - Rebase to v5.6.2
> > 
> > I was reviewing the new set and I couldn't find v5.4.28-rt19
> > 6dbbc833c99f ("mm: perform lru_add_drain_all() remotely"). Don't think
> > it has been squashed either.
> > 
> > Am I wrong? If not, why was that left out?
> 
> I was going to drop it from v5.4 but kept it last minute. I announced in
> 	https://lkml.kernel.org/r/20200309171350.kjb3pdjazhxm2li2@xxxxxxxxxxxxx
> 
> that the problem it fixes is not limited to RT so we need a solution for
> both config switches. The current plan for local-locks is not to work
> cross CPU because it breaks the local_irq_save() / preempt_disable()
> replacement which is something this patch relies on.
> The worker triggered via vmstat_update() is also blocked if the user
> task runs at an elevated priority for longer time.

OK. Thanks for clarifying.

Best,

Juri