Re: [PATCH rcu v2 15/20] kernel/notifier: Remove CONFIG_SRCU

[Wysocki, Rafael J]

On 1/13/2023 1:11 AM, Paul E. McKenney wrote:
> Now that the SRCU Kconfig option is unconditionally selected, there is
> no longer any point in conditional compilation based on CONFIG_SRCU.
> Therefore, remove the #ifdef.
>
> Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
> Cc: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>
> Cc: "Michał Mirosław" <mirq-linux@xxxxxxxxxxxx>
> Cc: Borislav Petkov <bp@xxxxxxx>
> Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
> Reviewed-by: John Ogness <john.ogness@xxxxxxxxxxxxx>

Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>


> ---
>   kernel/notifier.c | 3 ---
>   1 file changed, 3 deletions(-)
>
> diff --git a/kernel/notifier.c b/kernel/notifier.c
> index ab75637fd904f..d353e4b5402d7 100644
> --- a/kernel/notifier.c
> +++ b/kernel/notifier.c
> @@ -456,7 +456,6 @@ int raw_notifier_call_chain(struct raw_notifier_head *nh,
>   }
>   EXPORT_SYMBOL_GPL(raw_notifier_call_chain);
>   
> -#ifdef CONFIG_SRCU
>   /*
>    *	SRCU notifier chain routines.    Registration and unregistration
>    *	use a mutex, and call_chain is synchronized by SRCU (no locks).
> @@ -573,8 +572,6 @@ void srcu_init_notifier_head(struct srcu_notifier_head *nh)
>   }
>   EXPORT_SYMBOL_GPL(srcu_init_notifier_head);
>   
> -#endif /* CONFIG_SRCU */
> -
>   static ATOMIC_NOTIFIER_HEAD(die_chain);
>   
>   int notrace notify_die(enum die_val val, const char *str,