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From: Peter Zijlstra <peterz@infradead.org>
To: liyueyi <liyueyi@live.com>
Cc: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org,
	liyueyi <liyueyi@xiaomi.com>
Subject: Re: [PATCH] kthread: set kthread state to TASK_IDLE.
Date: Wed, 1 Apr 2020 11:39:04 +0200	[thread overview]
Message-ID: <20200401093904.GX20713@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <DM6PR11MB3531D3B164357B2DC476102DDFC90@DM6PR11MB3531.namprd11.prod.outlook.com>

On Wed, Apr 01, 2020 at 02:52:15PM +0800, liyueyi wrote:
> From: liyueyi <liyueyi@xiaomi.com>
> 
> Currently kthread() sleeps in TASK_UNINTERRUPTIBLE state waiting
> for the first wakeup, it may be detected by DETECT_HUNG_TASK if
> the first wakeup is coming later. Since kernel has introduced
> TASK_IDLE, change kthread state to TASK_IDLE.

How the heck can that ever happen anyway? Is this some virt
brain-damage?

And how is it not a real problem when it takes this long? 

  reply	other threads:[~2020-04-01  9:39 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-01  6:52 [PATCH] kthread: set kthread state to TASK_IDLE liyueyi
2020-04-01  9:39 ` Peter Zijlstra [this message]
     [not found]   ` <DM6PR11MB3531904888FBD86F4ED43009DFC90@DM6PR11MB3531.namprd11.prod.outlook.com>
2020-04-01 11:12     ` Peter Zijlstra
2020-04-01 12:27       ` Yueyi Li

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