Re: [PATCH] tracing: Add trace_trigger kernel command line option

[Steven Rostedt]

On Thu, 20 Oct 2022 10:55:12 -0700
"Paul E. McKenney" <paulmck@xxxxxxxxxx> wrote:

> > synchronize_rcu() {
> >     rcu_poll_gp_seq_start_unlocked() {
> > 	struct rcu_node *rnp = rcu_get_root();
> > 
> > 	if (rcu_init_invoked()) {
> > 		lockdep_assert_irqs_enabled();
> > 		raw_spin_lock_irq_rcu_node(rnp);
> > 	}
> > 	rcu_poll_gp_seq_start(snap);
> > 	if (rcu_init_invoked())
> > 		raw_spin_unlock_irq_rcu_node(rnp);  <<-- Interrupts enabled here
> >    }  
> 
> Thank you for digging into this!
> 
> Does the following help?

It does indeed!

I can remove the early_boot_irqs_disabled checks if you can add this to
this rc cycle and mark it stable.

-- Steve