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()
Thanks.
