Re: [PATCH v3 tip/core/rcu 3/9] rcu: Add synchronous grace-period waiting for RCU-tasks

[Oleg Nesterov]

On 07/31, Paul E. McKenney wrote:
>
> +void synchronize_rcu_tasks(void)
> +{
> +	/* Complain if the scheduler has not started.  */
> +	rcu_lockdep_assert(!rcu_scheduler_active,
> +			   "synchronize_rcu_tasks called too soon");
> +
> +	/* Wait for the grace period. */
> +	wait_rcu_gp(call_rcu_tasks);
> +}

Btw, what about CONFIG_PREEMPT=n ?

I mean, can't synchronize_rcu_tasks() be synchronize_sched() in this
case?

Oleg.

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