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From:   chenguanyou <chenguanyou9338@gmail.com>
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Subject: Re:[PATCH v2] hungtask: add filter kthread
Date:   Thu,  5 Aug 2021 22:47:20 +0800
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> 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.

Guanyou.Chen