Re: [PATCH v11 10/14] module: kallsyms: Fix suspicious rcu usage
From: Aaron Tomlin
Date: Tue Jun 28 2022 - 12:30:30 EST
On Mon 2022-06-27 23:56 -0400, Steven Rostedt wrote:
> > + preempt_enable();
>
> ^^^^^^^^^^^^^^^^^
>
> This just introduced an unbounded latency and will fail PREEMPT_RT.
>
Hi Steve,
Sorry about that!
If I understand correctly, there is absolutely no need to explicitly
disable preemption in this context. I will use: rcu_read_lock() and
rcu_read_unlock(), respectively, which will then be suitable for the
preemptible RCU implementation.
Kind regards,
--
Aaron Tomlin