linux-kernel - [PATCH 4/7 v2] sched/balancing: Fix comments (trying to) refer to NOHZ_BALANCE

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Message-ID: <ZeG6u2dOEXOqtvZw@gmail.com>
Date: Fri, 1 Mar 2024 12:23:39 +0100
From: Ingo Molnar <mingo@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: Peter Zijlstra <peterz@...radead.org>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Dietmar Eggemann <dietmar.eggemann@....com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Valentin Schneider <vschneid@...hat.com>
Subject: [PATCH 4/7 v2] sched/balancing: Fix comments (trying to) refer to
 NOHZ_BALANCE_KICK


* Ingo Molnar <mingo@...nel.org> wrote:

> Fix two typos:
> 
>  - There's no such thing as 'nohz_balancing_kick', the
>    flag is named 'BALANCE' and is capitalized:  NOHZ_BALANCE_KICK.
> 
>  - Likewise there's no such thing as a 'pending nohz_balance_kick'
>    either, the NOHZ_BALANCE_KICK flag is all upper-case.
> 
> Signed-off-by: Ingo Molnar <mingo@...nel.org>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Vincent Guittot <vincent.guittot@...aro.org>
> Cc: Dietmar Eggemann <dietmar.eggemann@....com>
> Cc: Linus Torvalds <torvalds@...ux-foundation.org>
> Cc: Valentin Schneider <vschneid@...hat.com>
> ---
>  kernel/sched/fair.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
> index 934ace69eb30..31838b9dcf36 100644
> --- a/kernel/sched/fair.c
> +++ b/kernel/sched/fair.c
> @@ -12410,14 +12410,14 @@ static int newidle_balance(struct rq *this_rq, struct rq_flags *rf)
>  
>  /*
>   * run_rebalance_domains is triggered when needed from the scheduler tick.
> - * Also triggered for nohz idle balancing (with nohz_balancing_kick set).
> + * Also triggered for NOHZ idle balancing (with NOHZ_BALANCING_KICK set).

    s/NOHZ_BALANCING_KICK
     /NOHZ_BALANCE_KICK

As the changelog says.

This change got squashed into the wrong patch later in the rest of this series
that I haven't posted yet. Find -v2 below.

Thanks,

	Ingo

===============>
From: Ingo Molnar <mingo@...nel.org>
Date: Fri, 1 Mar 2024 11:30:42 +0100
Subject: [PATCH] sched/balancing: Fix comments (trying to) refer to NOHZ_BALANCE_KICK

Fix two typos:

 - There's no such thing as 'nohz_balancing_kick', the
   flag is named 'BALANCE' and is capitalized:  NOHZ_BALANCE_KICK.

 - Likewise there's no such thing as a 'pending nohz_balance_kick'
   either, the NOHZ_BALANCE_KICK flag is all upper-case.

Signed-off-by: Ingo Molnar <mingo@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Vincent Guittot <vincent.guittot@...aro.org>
Cc: Dietmar Eggemann <dietmar.eggemann@....com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Valentin Schneider <vschneid@...hat.com>
---
 kernel/sched/fair.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 934ace69eb30..4c46bffb6a7a 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -12410,14 +12410,14 @@ static int newidle_balance(struct rq *this_rq, struct rq_flags *rf)
 
 /*
  * run_rebalance_domains is triggered when needed from the scheduler tick.
- * Also triggered for nohz idle balancing (with nohz_balancing_kick set).
+ * Also triggered for NOHZ idle balancing (with NOHZ_BALANCE_KICK set).
  */
 static __latent_entropy void run_rebalance_domains(struct softirq_action *h)
 {
 	struct rq *this_rq = this_rq();
 	enum cpu_idle_type idle = this_rq->idle_balance;
 	/*
-	 * If this CPU has a pending nohz_balance_kick, then do the
+	 * If this CPU has a pending NOHZ_BALANCE_KICK, then do the
 	 * balancing on behalf of the other idle CPUs whose ticks are
 	 * stopped. Do nohz_idle_balance *before* rebalance_domains to
 	 * give the idle CPUs a chance to load balance. Else we may