linux-kernel - Re: [PATCH v2 15/27] rcu: Rename rcu_dynticks_eqs_online() into rcu_watching_eqs

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Date: Tue, 7 May 2024 00:18:23 +0200
From: Frederic Weisbecker <frederic@...nel.org>
To: Valentin Schneider <vschneid@...hat.com>
Cc: rcu@...r.kernel.org, linux-kernel@...r.kernel.org,
	"Paul E. McKenney" <paulmck@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Neeraj Upadhyay <quic_neeraju@...cinc.com>,
	Joel Fernandes <joel@...lfernandes.org>,
	Josh Triplett <josh@...htriplett.org>,
	Boqun Feng <boqun.feng@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
	Lai Jiangshan <jiangshanlai@...il.com>,
	Zqiang <qiang.zhang1211@...il.com>
Subject: Re: [PATCH v2 15/27] rcu: Rename rcu_dynticks_eqs_online() into
 rcu_watching_eqs_online()

Le Tue, Apr 30, 2024 at 11:17:19AM +0200, Valentin Schneider a écrit :
> The context_tracking.state RCU_DYNTICKS subvariable has been renamed to
> RCU_WATCHING, reflect that change in the related helpers.
> 
> Signed-off-by: Valentin Schneider <vschneid@...hat.com>
> ---
>  kernel/rcu/tree.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
> index bb0d9dd8b6d3a..fe2beb7d2e82d 100644
> --- a/kernel/rcu/tree.c
> +++ b/kernel/rcu/tree.c
> @@ -280,7 +280,7 @@ void rcu_softirq_qs(void)
>  }
>  
>  /*
> - * Reset the current CPU's ->dynticks counter to indicate that the
> + * Reset the current CPU's RCU_WATCHING counter to indicate that the
>   * newly onlined CPU is no longer in an extended quiescent state.
>   * This will either leave the counter unchanged, or increment it
>   * to the next non-quiescent value.
> @@ -289,7 +289,7 @@ void rcu_softirq_qs(void)
>   * of the ->dynticks counter are manipulated only by the corresponding CPU,
>   * or when the corresponding CPU is offline.
>   */
> -static void rcu_dynticks_eqs_online(void)
> +static void rcu_watching_eqs_online(void)

Or simply rcu_watching_online?

Thanks.

>  {
>  	if (ct_rcu_watching() & CT_RCU_WATCHING)
>  		return;
> @@ -5051,7 +5051,7 @@ void rcutree_report_cpu_starting(unsigned int cpu)
>  	rnp = rdp->mynode;
>  	mask = rdp->grpmask;
>  	arch_spin_lock(&rcu_state.ofl_lock);
> -	rcu_dynticks_eqs_online();
> +	rcu_watching_eqs_online();
>  	raw_spin_lock(&rcu_state.barrier_lock);
>  	raw_spin_lock_rcu_node(rnp);
>  	WRITE_ONCE(rnp->qsmaskinitnext, rnp->qsmaskinitnext | mask);
> -- 
> 2.43.0
>