linux-kernel - Re: [PATCH -next] sched: make sched_set_stop

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Date:   Sat, 29 May 2021 10:36:41 +0800
From:   Bixuan Cui <cuibixuan@...wei.com>
To:     <mingo@...hat.com>, <peterz@...radead.org>,
        <juri.lelli@...hat.com>, <vincent.guittot@...aro.org>
CC:     <dietmar.eggemann@....com>, <rostedt@...dmis.org>,
        <bsegall@...gle.com>, <mgorman@...e.de>, <bristot@...hat.com>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] sched: make sched_set_stop_task() static



On 2021/5/29 10:29, Bixuan Cui wrote:
> make W=1 generates the following warning for kernel/sched/core.c:
> warning: no previous prototype for ‘sched_set_stop_task’ [-Wmissing-prototypes]
> 
> Signed-off-by: Bixuan Cui <cuibixuan@...wei.com>
> ---
>  kernel/sched/core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/kernel/sched/core.c b/kernel/sched/core.c
> index adea0b1e8036..1c1e9612018b 100644
> --- a/kernel/sched/core.c
> +++ b/kernel/sched/core.c
> @@ -3209,7 +3209,7 @@ int select_task_rq(struct task_struct *p, int cpu, int wake_flags)
>  	return cpu;
>  }
>  
> -void sched_set_stop_task(int cpu, struct task_struct *stop)
> +static void sched_set_stop_task(int cpu, struct task_struct *stop)
>  {
>  	static struct lock_class_key stop_pi_lock;
>  	struct sched_param param = { .sched_priority = MAX_RT_PRIO - 1 };
Hi, This patch will cause compilation errors. Please ignore it. :-(

Thanks
Bixuan Cui



>