On Thu, Apr 30, 2026 at 11:49:02AM +0530, Samir M wrote:
>
> On 29/04/26 11:21 pm, Shrikanth Hegde wrote:
> > Hi Samir.
> >
> > On 4/29/26 3:46 PM, Samir M wrote:
> > >
> > > Hi Boqun,
> > >
> > > Thank you for pointing me to the existing patches. I have tested
> > > both Paul's patch [1] and TJ's workqueue patch [2] on my PowerPC
> > > system (80 CPUs), and can confirm that the workqueue lockup issue is
> > > not observed.
> > >
> >
> > Can you try only paul's patch and confirm if the issue is fixed?
> >
>
> Hi Shrikanth,
>
> I have verified Paul’s “alone” patch, and it resolves the issue no workqueue
> lockups are observed.
Thank you, Samir! May I add your Tested-by?
Thanx, Paul
> Regards,
> Samir.
>
>
> > > Test Environment:
> > > - System: PowerPC with 80 CPUs ( e.g. PowerPC LPARs with 80 online
> > > and 384 possible CPUs)
> > > - Kernel version: Latest upstream (7.1-rc1)
> > >
> > > Regression Testing Results:
> > > All tests completed successfully with no issues observed:
> > > - Hackbench
> > > - Kernel selftests
> > > - LTP scheduler tests
> > >
> > > The workqueue lockup that was previously occurring is no longer
> > > present with the patches applied.
> > >
> > > References:
> > > [1]: https://lore.kernel.org/rcu/ed1fa6cd-7343-4ca3-8b9d-
> > > d699ca496f83@paulmck-laptop/
> > > [2]: https://lore.kernel.org/rcu/[email protected]/
> > >
> > > Best regards,
> > > Samir
> >
