linux-kernel - Re: sched: fix compilation warning on !SMP

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Message-ID: <CAKfTPtDNmSXmeQD_2TJ6r4rsiH-s8VY-pjSf5=dfA6zMt9s_pg@mail.gmail.com>
Date:	Tue, 31 Jan 2012 09:46:12 +0100
From:	Vincent Guittot <vincent.guittot@...aro.org>
To:	Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: sched: fix compilation warning on !SMP

2012/1/31 Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>:
> From: Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
>
>  CC      kernel/sched/fair.o
> kernel/sched/fair.c:218:36: warning: 'max_load_balance_interval' defined but not used [-Wunused-variable]
>
> Signed-off-by: Hiroshi Shimamoto <h-shimamoto@...jp.nec.com>
> CC: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> CC: Vincent Guittot <vincent.guittot@...aro.org>
> ---
>  kernel/sched/fair.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
> index 8e77a6b..4ab60a2 100644
> --- a/kernel/sched/fair.c
> +++ b/kernel/sched/fair.c
> @@ -215,8 +215,6 @@ calc_delta_mine(unsigned long delta_exec, unsigned long weight,
>
>  const struct sched_class fair_sched_class;
>
> -static unsigned long __read_mostly max_load_balance_interval = HZ/10;
> -
>  /**************************************************************
>  * CFS operations on generic schedulable entities:
>  */
> @@ -3086,6 +3084,8 @@ static bool yield_to_task_fair(struct rq *rq, struct task_struct *p, bool preemp
>  * Fair scheduling class load-balancing methods:
>  */
>
> +static unsigned long __read_mostly max_load_balance_interval = HZ/10;
> +

Sorry for moving it out of SMP. Thanks for fixing this

>  /*
>  * pull_task - move a task from a remote runqueue to the local runqueue.
>  * Both runqueues must be locked.
> --
> 1.7.7.6
>
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