On Tue, Sep 29, 2020 at 03:29:27PM -0400, Joel Fernandes (Google) wrote:
> Currently, rcu_cpu_starting() checks to see if the RCU core expects a
> quiescent state from the incoming CPU. However, the current interaction
> between RCU quiescent-state reporting and CPU-hotplug operations should
> mea
Currently, rcu_cpu_starting() checks to see if the RCU core expects a
quiescent state from the incoming CPU. However, the current interaction
between RCU quiescent-state reporting and CPU-hotplug operations should
mean that the incoming CPU never needs to report a quiescent state.
First, the outgo
On Fri, Aug 07, 2020 at 11:37:32AM -0400, Joel Fernandes wrote:
> Hi Paul,
>
> On Thu, Jul 30, 2020 at 08:48:25PM -0700, Paul E. McKenney wrote:
> [...]
> > > And I could make the comment here as:
> > > /*
> > >* Delete QS reporting from here, by June 2021, if the warning does not
> > >*
Hi Paul,
On Thu, Jul 30, 2020 at 08:48:25PM -0700, Paul E. McKenney wrote:
[...]
> > And I could make the comment here as:
> > /*
> > * Delete QS reporting from here, by June 2021, if the warning does not
> > * fire. Leave the warning indefinitely. Check RCU design requirements
> >
On Thu, Jul 30, 2020 at 09:42:22PM -0400, Joel Fernandes wrote:
> On Thu, Jul 30, 2020 at 09:21:59AM -0700, Paul E. McKenney wrote:
> > On Wed, Jul 29, 2020 at 11:02:20PM -0400, Joel Fernandes (Google) wrote:
> > > Add a warning if CPU being onlined did not report QS already. This is to
> > > simpl
On Thu, Jul 30, 2020 at 09:21:59AM -0700, Paul E. McKenney wrote:
> On Wed, Jul 29, 2020 at 11:02:20PM -0400, Joel Fernandes (Google) wrote:
> > Add a warning if CPU being onlined did not report QS already. This is to
> > simplify the code in the CPU onlining path and also to make clear about
> > w
On Thu, Jul 30, 2020 at 09:21:59AM -0700, Paul E. McKenney wrote:
> On Wed, Jul 29, 2020 at 11:02:20PM -0400, Joel Fernandes (Google) wrote:
> > Add a warning if CPU being onlined did not report QS already. This is to
> > simplify the code in the CPU onlining path and also to make clear about
> > w
On Wed, Jul 29, 2020 at 11:02:20PM -0400, Joel Fernandes (Google) wrote:
> Add a warning if CPU being onlined did not report QS already. This is to
> simplify the code in the CPU onlining path and also to make clear about
> where QS is reported. The act of QS reporting in CPU onlining path is
> is
Add a warning if CPU being onlined did not report QS already. This is to
simplify the code in the CPU onlining path and also to make clear about
where QS is reported. The act of QS reporting in CPU onlining path is
is likely unnecessary as shown by code reading and testing with
rcutorture's TREE03
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