Re: [PATCH] idle: Remove stale RCU comment

["Wysocki, Rafael J" <rafael.j.wysocki@intel.com>]

On 6/3/2024 5:30 PM, Christian Loehle wrote:
> The call of rcu_idle_enter() from within cpuidle_idle_call() was
> removed in commit 1098582a0f6c ("sched,idle,rcu: Push rcu_idle deeper
> into the idle path") which makes the comment out of place.
>
> Signed-off-by: Christian Loehle <christian.loehle@arm.com>

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


> ---
>   kernel/sched/idle.c | 6 ------
>   1 file changed, 6 deletions(-)
>
> diff --git a/kernel/sched/idle.c b/kernel/sched/idle.c
> index 6135fbe83d68..3cc1a592d9a1 100644
> --- a/kernel/sched/idle.c
> +++ b/kernel/sched/idle.c
> @@ -179,12 +179,6 @@ static void cpuidle_idle_call(void)
>   		return;
>   	}
>   
> -	/*
> -	 * The RCU framework needs to be told that we are entering an idle
> -	 * section, so no more rcu read side critical sections and one more
> -	 * step to the grace period
> -	 */
> -
>   	if (cpuidle_not_available(drv, dev)) {
>   		tick_nohz_idle_stop_tick();
>