linux-kernel - Re: [PATCH] workqueue: Introduce show_freeze_workqueues

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Date:   Fri, 17 Mar 2023 12:16:22 -1000
From:   Tejun Heo <tj@...nel.org>
To:     Jungseung Lee <js07.lee@...sung.com>
Cc:     Lai Jiangshan <jiangshanlai@...il.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Pavel Machek <pavel@....cz>, Len Brown <len.brown@...el.com>,
        linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
        bw365.lee@...sung.com, yw85.kim@...sung.com,
        huijin.park@...sung.com
Subject: Re: [PATCH] workqueue: Introduce show_freeze_workqueues_busy

Hello,

A few nits.

On Wed, Mar 15, 2023 at 09:45:57PM +0900, Jungseung Lee wrote:
> diff --git a/kernel/power/process.c b/kernel/power/process.c
> index 6c1c7e5..590550f 100644
> --- a/kernel/power/process.c
> +++ b/kernel/power/process.c
> @@ -93,7 +93,7 @@ static int try_to_freeze_tasks(bool user_only)
>  		       todo - wq_busy, wq_busy);
>  
>  		if (wq_busy)
> -			show_all_workqueues();
> +			show_freeze_workqueues_busy();

Maybe name this show_freezable_workqueues()?

> @@ -5043,7 +5043,7 @@ static void show_one_worker_pool(struct worker_pool *pool)
>  /**
>   * show_all_workqueues - dump workqueue state
>   *
> - * Called from a sysrq handler or try_to_freeze_tasks() and prints out
> + * Called from a sysrq handler and prints out
>   * all busy workqueues and pools.

Can you reflow the comment to 80-col?

> +/**
> + * show_freeze_workqueues_busy - dump freezable workqueue state
> + *
> + * Called from try_to_freeze_tasks() and prints out
> + * all freezable workqueues still busy.

Ditto.

Thanks.

-- 
tejun