Re: [PATCH] [RFC] rcu/tree: Reduce wake up for synchronize_rcu() common case

[Frederic Weisbecker]

Le Thu, Mar 07, 2024 at 06:48:51PM -0500, Joel Fernandes (Google) a écrit :
> In the synchronize_rcu() common case, we will have less than
> SR_MAX_USERS_WAKE_FROM_GP number of users per GP. Waking up the kworker
> is pointless just to free the last injected wait head since at that point,
> all the users have already been awakened.
> 
> Introduce a new counter to track this and prevent the wakeup in the
> common case.
> 
> Signed-off-by: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx>

Reviewed-by: Frederic Weisbecker <frederic@xxxxxxxxxx>