linux-kernel - Re: [PATCH] kthread: set kthread state to TASK

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Message-ID: <DM6PR11MB3531E5C5F509766C47CFF880DFC90@DM6PR11MB3531.namprd11.prod.outlook.com>
Date:   Wed, 1 Apr 2020 20:27:00 +0800
From:   Yueyi Li <liyueyi@...e.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        liyueyi <liyueyi@...omi.com>
Subject: Re: [PATCH] kthread: set kthread state to TASK_IDLE.



On 2020/4/1 19:12, Peter Zijlstra wrote:
> 
> A: Because it messes up the order in which people normally read text.
> Q: Why is top-posting such a bad thing?
> A: Top-posting.
> Q: What is the most annoying thing in e-mail?
> 
> On Wed, Apr 01, 2020 at 10:40:28AM +0000, Li Yueyi wrote:
>> I create a kthread to do some work will trigger system restart, i don`t wake it up immediately but wakeup it in a HW irq handler.
>> So this kthread sleeps in TASK_UNINTERRUPTIBLE state until the HW irq coming up.
>>
>> Did i do something wrong?
>> Should i wake it up immediately and then call wait_event_xxxx function to sleep it?
> 
> This!
> Oh~, Sorry about top-posting and....thanks for your answer!