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From: Dietmar Eggemann <dietmar.eggemann@arm.com>
To: vincent.donnefort@arm.com, mingo@redhat.com, peterz@infradead.org
Cc: linux-kernel@vger.kernel.org, valentin.schneider@arm.com,
	Vincent Guittot <vincent.guittot@linaro.org>
Subject: Re: [PATCH] sched: Remove unused last_load_update_tick rq member
Date: Fri, 20 Mar 2020 14:44:55 +0100	[thread overview]
Message-ID: <e400d0b1-173f-bcfd-40c0-2e473e14e7ae@arm.com> (raw)
In-Reply-To: <1584710495-308969-1-git-send-email-vincent.donnefort@arm.com>

+ Vincent Guittot

On 20.03.20 14:21, vincent.donnefort@arm.com wrote:
> From: Vincent Donnefort <vincent.donnefort@arm.com>
> 
> The commit 5e83eafbfd3b ("sched/fair: Remove the rq->cpu_load[] update
> code") eliminated the use case for rq->last_load_update_tick. Removing
> it.
> 
> Signed-off-by: Vincent Donnefort <vincent.donnefort@arm.com>
> 
> diff --git a/kernel/sched/core.c b/kernel/sched/core.c
> index 1a9983d..c41ee26 100644
> --- a/kernel/sched/core.c
> +++ b/kernel/sched/core.c
> @@ -6685,7 +6685,6 @@ void __init sched_init(void)
>  
>  		rq_attach_root(rq, &def_root_domain);
>  #ifdef CONFIG_NO_HZ_COMMON
> -		rq->last_load_update_tick = jiffies;
>  		rq->last_blocked_load_update_tick = jiffies;
>  		atomic_set(&rq->nohz_flags, 0);
>  #endif
> diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
> index 9ea6478..6e14fad 100644
> --- a/kernel/sched/sched.h
> +++ b/kernel/sched/sched.h
> @@ -860,7 +860,6 @@ struct rq {
>  #endif
>  #ifdef CONFIG_NO_HZ_COMMON
>  #ifdef CONFIG_SMP
> -	unsigned long		last_load_update_tick;
>  	unsigned long		last_blocked_load_update_tick;
>  	unsigned int		has_blocked_load;
>  #endif /* CONFIG_SMP */

Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>

  reply	other threads:[~2020-03-20 13:44 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-20 13:21 vincent.donnefort
2020-03-20 13:44 ` Dietmar Eggemann [this message]
2020-03-20 13:57   ` Vincent Guittot
2020-04-08 12:20 ` [tip: sched/urgent] sched/core: Remove unused rq::last_load_update_tick tip-bot2 for Vincent Donnefort

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