linux-kernel - Re: [PATCH v2] freezer, sched: report the frozen task stat as 'D'

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Message-ID: <Z1xkFq9WIeF-MvHr@slm.duckdns.org>
Date: Fri, 13 Dec 2024 06:43:02 -1000
From: Tejun Heo <tj@...nel.org>
To: Chen Ridong <chenridong@...weicloud.com>
Cc: mingo@...hat.com, peterz@...radead.org, juri.lelli@...hat.com,
	vincent.guittot@...aro.org, dietmar.eggemann@....com,
	rostedt@...dmis.org, bsegall@...gle.com, mgorman@...e.de,
	vschneid@...hat.com, mkoutny@...e.com, roman.gushchin@...ux.dev,
	linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
	chenridong@...wei.com, wangweiyang2@...wei.com
Subject: Re: [PATCH v2] freezer, sched: report the frozen task stat as 'D'

On Fri, Dec 13, 2024 at 11:03:32AM +0000, Chen Ridong wrote:
...
> diff --git a/include/linux/sched.h b/include/linux/sched.h
> index d380bffee2ef..dbe0cb97461f 100644
> --- a/include/linux/sched.h
> +++ b/include/linux/sched.h
> @@ -1630,8 +1630,9 @@ static inline unsigned int __task_state_index(unsigned int tsk_state,
>  	 * We're lying here, but rather than expose a completely new task state
>  	 * to userspace, we can make this appear as if the task has gone through
>  	 * a regular rt_mutex_lock() call.
> +	 * Report the frozen task uninterruptible.
>  	 */
> -	if (tsk_state & TASK_RTLOCK_WAIT)
> +	if (tsk_state & TASK_RTLOCK_WAIT || tsk_state & TASK_FROZEN)

Can you please add ()'s so that it's if ((a & b) || (c & d))? Other than
that,

Acked-by: Tejun Heo <tj@...nel.org>

Thanks.

-- 
tejun