linux-kernel - Re: [PATCH 1/4] sched/fair: Introduce sched_entity::dont

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Message-ID: <20160620142823.GH30154@twins.programming.kicks-ass.net>
Date:	Mon, 20 Jun 2016 16:28:23 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Jiri Olsa <jolsa@...nel.org>
Cc:	Ingo Molnar <mingo@...nel.org>,
	lkml <linux-kernel@...r.kernel.org>,
	James Hartsock <hartsjc@...hat.com>,
	Rik van Riel <riel@...hat.com>,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>,
	Kirill Tkhai <ktkhai@...allels.com>
Subject: Re: [PATCH 1/4] sched/fair: Introduce sched_entity::dont_balance

On Mon, Jun 20, 2016 at 02:15:11PM +0200, Jiri Olsa wrote:
> Adding dont_balance bool into struct sched_entity,
> to mark tasks which are rebalanced based on affinity.
> 
> It's used only when REBALANCE_AFFINITY feature is
> switched on. The code functionality of this feature
> is introduced in following patch.
> 
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>
> ---
>  include/linux/sched.h   |  2 ++
>  kernel/sched/fair.c     | 21 ++++++++++++++++++---
>  kernel/sched/features.h |  1 +
>  3 files changed, 21 insertions(+), 3 deletions(-)
> 
> diff --git a/include/linux/sched.h b/include/linux/sched.h
> index dee41bf59e6b..0e6ac882283b 100644
> --- a/include/linux/sched.h
> +++ b/include/linux/sched.h
> @@ -1331,6 +1331,8 @@ struct sched_entity {
>  
>  	u64			nr_migrations;
>  
> +	bool			dont_balance;

Never use bool in structures.