On Mon, Jan 02, 2023 at 11:34:44AM +0100, gregkh@xxxxxxxxxxxxxxxxxxx wrote:
>
> The patch below does not apply to the 5.15-stable tree.
> If someone wants it applied there, or to any other stable or longterm
> tree, then please email the backport, including the original git commit
> id to <stable@xxxxxxxxxxxxxxx>.
>
> Possible dependencies:
>
> 1c0908d8e441 ("rtmutex: Add acquire semantics for rtmutex lock acquisition slow path")
> ee042be16cb4 ("locking: Apply contention tracepoints in the slow path")
> d257cc8cb8d5 ("locking/rwsem: Make handoff bit handling more consistent")
> 7cdacc5f52d6 ("locking/rwsem: Disable preemption for spinning region")
>
> thanks,
>
> greg k-h
>
Hi Greg,
I don't plan to backport this to -stable. It's PREEMPT_RT-specific so
anyone how needs it are managing their own OOT patches. The prerequisites
are not -stable material so ideally anyone backporting would be functionally
verifying their target workloads still works ok and meets deadlines. Normal
users of stable kernels are not impacted by the bug this patch fixes.
--
Mel Gorman
SUSE Labs
