Re: [PATCH 2/7] rcu: limit PREEMPT_RCU configurations

[Sebastian Andrzej Siewior]

On 2024-10-09 11:24:09 [-0700], Paul E. McKenney wrote:
> In order to support systems that currently run CONFIG_PREEMPT=n that
…
> Or am I once again missing your point?

The change is:
| config PREEMPT_RCU
|        bool
|-       default y if PREEMPTION
|+       default y if (PREEMPT || PREEMPT_RT || PREEMPT_DYNAMIC)

Now:
- CONFIG_PREEMPT select PREEMPT_BUILD
- PREEMPT_RT select CONFIG_PREEMPTION
- PREEMPT_DYNAMIC selects PREEMPT_BUILD

and PREEMPT_BUILD select CONFIG_PREEMPTION

so in the end, this change is a nop, right?

> 							Thanx, Paul

Sebastian