linux-kernel - Re: [PATCH v2] hungtask: add filter kthread

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Message-Id: <20210805164328.58213d35e45d81c363b2135e@linux-foundation.org>
Date:   Thu, 5 Aug 2021 16:43:28 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     chenguanyou <chenguanyou9338@...il.com>
Cc:     mhocko@...e.com, chenguanyou@...omi.com, gpiccoli@...onical.com,
        keescook@...omium.org, linux-kernel@...r.kernel.org,
        lukas.bulwahn@...il.com, vbabka@...e.cz
Subject: Re: [PATCH v2] hungtask: add filter kthread

On Thu,  5 Aug 2021 22:47:20 +0800 chenguanyou <chenguanyou9338@...il.com> wrote:

> > Either those kernel threads should be fixed to use less sleep or
> > annotate the sleep properly (TASK_IDLE).
> 
> The API for debugging when we no need care kernel threads state.
> 

Please explain this point in more detail?