Re: [REGRESSION] osnoise: "eventpoll: Replace rwlock with spinlock" causes ~50µs noise spikes on isolated PREEMPT_RT cores

Greg KH
2026-03-26T14:52:44Z

On Thu, Mar 26, 2026 at 04:00:57PM +0200, Ionut Nechita (Wind River) wrote:
> Hi,
>
> I'm reporting a regression introduced by commit 0c43094f8cc9
> ("eventpoll: Replace rwlock with spinlock"), backported to stable 6.12.y.

Does this regression also show up in the 6.18 release and newer? If so,
please work to address it there first, as that is where it needs to be
handled first.

thanks,

greg k-h