Re: [PATCH] rcu: Fix missing TICK_DEP_MASK_RCU_EXP dependency check

From: Paul E. McKenney
Date: Mon Jan 09 2023 - 14:29:18 EST


On Sat, Jan 07, 2023 at 10:39:22PM +0100, Frederic Weisbecker wrote:
> On Wed, Dec 21, 2022 at 12:16:34PM -0800, Paul E. McKenney wrote:
> > On Tue, Dec 20, 2022 at 10:16:25PM +0800, Zqiang wrote:
> > > This commit add TICK_DEP_MASK_RCU_EXP dependency check in
> > > check_tick_dependency(), fix commit df1e849ae4559 ("rcu: Enable
> > > tick for nohz_full CPUs slow to provide expedited QS").
> > >
> > > Signed-off-by: Zqiang <qiang1.zhang@xxxxxxxxx>
> >
> > Again, good eyes, thank you!!!
> >
> > I have queued this for further review and testing, given that it affects
> > pretty much only RCU. However, if someone else would rather take it:
> >
> > Acked-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
>
> Thanks for picking it up! Please also add the following tags:
>
> Fixes: df1e849ae455 ("rcu: Enable tick for nohz_full CPUs slow to provide expedited QS")
> Acked-by: Frederic Weisbecker <frederic@xxxxxxxxxx>

Thank you for looking it over! I will apply these on my next rebase.

Thanx, Paul