Re: [PATCH 2/2] rcu: Don't dump the stalled CPU on where RCU GP kthread last ran twice

[Paul E. McKenney]

On Mon, Jul 10, 2023 at 03:55:16PM -0400, Joel Fernandes wrote:
> On Mon, Jul 10, 2023 at 3:06 PM Paul E. McKenney <paulmck@xxxxxxxxxx> wrote:
> >
> > On Wed, Jul 05, 2023 at 03:30:20PM +0800, Zhen Lei wrote:
> > > The stacks of all stalled CPUs will be dumped. If the CPU on where RCU GP
> > > kthread last ran is stalled, its stack does not need to be dumped again.
> > >
> > > Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx>
> >
> > This one looks good.  Please feel free to rebase it before 1/2 and repost.
> 
> Just a small comment:
> I wondered if this would make it harder to identify which stack among
> the various CPU stacks corresponds to the one the GP kthread is
> running on. However, this line does print the CPU number of the
> thread, so it is perhaps not an issue:
> 
>                 pr_err("%s kthread starved for %ld jiffies! g%ld f%#x
> %s(%d) ->state=%#x ->cpu=%d\n",
> 
> Reviewed-by: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx>

Thank you!  Zhen Lei, please feel free to add Joel's Reviewed-by on your
next posting.

							Thanx, Paul