[Re: [linux-yocto] [PATCH v5.10 0/1] Add ACPI fixup for rcu_nocb/nohz "N" 
alias] On 10/05/2021 (Mon 23:03) Bruce Ashfield wrote:

> In message: [PATCH v5.10 0/1] Add ACPI fixup for rcu_nocb/nohz "N" alias
> on 07/05/2021 Paul Gortmaker wrote:
> 
> > Bruce, Yocto kernel folks,
> > 
> > This is a fixup to reconcile the nohz behaviour with the rcu_nocbs
> > behaviour when the "N" alias is used for NR_CPUS.
> > 
> > It works in conjunction with the earlier Yocto-5.10 series here:
> > 
> > https://lists.yoctoproject.org/g/linux-yocto/message/9604
> > 
> > The fix has been in linux-next since April 22nd (and hence has no obvious
> > issues) and is on its way to inclusion in mainline via paulmck:
> > 
> > https://lore.kernel.org/lkml/20210422212448.GJ975577@paulmck-ThinkPad-P17-Gen-1/
> > 
> > ...but as we both know, the opening of the v5.14 merge window is
> > roughly two months away, so I'd like to accelerate the fix into Yocto's
> > v5.10 kernel now, rather than wait for mainline.
> > 
> > If somehow some issue does crop up between now and mainline, I will of
> > course re-align our Yocto v5.10 tree to match what lands in mainline.
> 
> merged to v5.10/standard/*
> 
> The next refernce kernel (spring release) will likely be 5.13 based, so
> we'll want to queue up a port to those kernels as well, if they end up
> being of interest.

The mainline v5.13 has the content from message/9604 above already, so
in theory I can route this fix through linux-stable for v5.13 backport
around the time v5.13 finalizes and v5.14 opens and takes this fix into
mainline -- making it one less thing you have to futz with.

P.
--

> 
> Bruce
> 
> > 
> > Thanks,
> > Paul.
> > 
> > ---
> > 
> > Paul Gortmaker (1):
> >   sched/isolation: reconcile rcu_nocbs= and nohz_full=
> > 
> >  kernel/sched/isolation.c | 4 +---
> >  1 file changed, 1 insertion(+), 3 deletions(-)
> > 
> > -- 
> > 2.25.1
> > 

> 
> 
> 

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