On Wed, Jun 1, 2022 at 10:12 AM Frederic Weisbecker <frederic@xxxxxxxxxx> wrote:
>
> On Mon, May 30, 2022 at 10:54:26AM -0400, Joel Fernandes wrote:
> > >> +void call_rcu_lazy(struct rcu_head *head_rcu, rcu_callback_t func)
> > >> +{
> > >> + struct lazy_rcu_head *head = (struct lazy_rcu_head *)head_rcu;
> > >> + struct rcu_lazy_pcp *rlp;
> > >> +
> > >> + preempt_disable();
> > >> + rlp = this_cpu_ptr(&rcu_lazy_pcp_ins);
> > >> + preempt_enable();
> > >>
> > > Can we get rid of such explicit disabling/enabling preemption?
> >
> > Ok I'll try. Last I checked, something needs to disable preemption to
> > prevent warnings with sampling the current processor ID.
>
> raw_cpu_ptr()
Indeed, thanks!
- Joel
