Re: [PATCH] hungtask: add filter kthread/check comm

[Andrew Morton]

On Fri, 21 May 2021 21:25:44 +0800 chenguanyou <chenguanyou9338@xxxxxxxxx> wrote:

> Some kernel threads are always in D state, when we enable hung_task,
> it will misjudge, we should skip these to narrow the scope.
> 
> exp mtk mobilephone:
> root            435   435      2       0      0 mtk_lpm_monitor_thread 0 D LPM-0
> root            436   436      2       0      0 mtk_lpm_monitor_thread 0 D LPM-1
> root            437   437      2       0      0 mtk_lpm_monitor_thread 0 D LPM-2
> root            438   438      2       0      0 mtk_lpm_monitor_thread 0 D LPM-3
> root            439   439      2       0      0 mtk_lpm_monitor_thread 0 D LPM-4
> root            440   440      2       0      0 mtk_lpm_monitor_thread 0 D LPM-5
> root            441   441      2       0      0 mtk_lpm_monitor_thread 0 D LPM-6
> root            442   442      2       0      0 mtk_lpm_monitor_thread 0 D LPM-7

Maybe convert these threads to use TASK_IDLE?