Re: [PATCH 0/3] sched: migrate_disable() vs per-CPU access safety checks

[Thomas Gleixner]

On Wed, Jul 21 2021 at 12:51, Valentin Schneider wrote:
> Hi folks,
>
> I've hit a few warnings when taking v5.13-rt1 out for a spin on my arm64
> Juno. Those are due to regions that become preemptible under PREEMPT_RT, but
> remain safe wrt per-CPU accesses due to migrate_disable() + a sleepable lock.
>
> This adds a helper that looks at not just preemptability but also affinity and
> migrate disable, and plasters the warning sites.

Nice!

I just pulled that into the RT queue and it will show up with the next
release.

Thanks,

        tglx