Re: call_rcu from trace_preempt

Steven Rostedt
2015-06-16T15:43:54Z

On Tue, 16 Jun 2015 07:16:26 -0700
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com> wrote:

> > Just for the record: Using a thread for freeing the memory is curing the
> > problem without the need to modify rcu_is_watching.
>
> I must confess to liking this approach better than guaranteeing full-up
> reentrancy in call_rcu() and kfree_rcu(). ;-)
>

Then reentrancy must be really bad if you prefer a spinning thread that
polls constantly just to free an item ;-)

-- Steve