From: Eric Dumazet <eric.dumazet@gmail.com>
To: Dmitry Antipov <dmitry.antipov@linaro.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Module/kthread/printk question/problem
Date: Thu, 02 Feb 2012 10:58:18 +0100 [thread overview]
Message-ID: <1328176698.2279.8.camel@edumazet-HP-Compaq-6005-Pro-SFF-PC> (raw)
In-Reply-To: <4F2A55E0.3040404@linaro.org>
Le jeudi 02 février 2012 à 13:22 +0400, Dmitry Antipov a écrit :
> On 02/02/2012 01:15 PM, Eric Dumazet wrote:
>
> >
> > Try following code :
> >
>
> I already did it myself (except redundant wake_up_process(), which
> is performed by kthread_run() anyway).
Then its racy, unless you also changed the way your worker threads exit.
By the time kthread_run() returns, child thread can already be gone.
This is why I use kthread_create() : to be able to get_task_struct() so
that task_struct cannot disappear, even if the child exits really fast :
int worker(void *arg)
{
return 0;
}
next prev parent reply other threads:[~2012-02-02 9:58 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-01 16:09 Module/kthread/printk question/problem Dmitry Antipov
2012-02-01 16:31 ` Eric Dumazet
2012-02-01 16:35 ` Dmitry Antipov
2012-02-01 17:16 ` Eric Dumazet
2012-02-02 6:13 ` Dmitry Antipov
2012-02-02 7:45 ` Eric Dumazet
2012-02-02 9:20 ` Dmitry Antipov
2012-02-02 9:15 ` Eric Dumazet
2012-02-02 9:22 ` Dmitry Antipov
2012-02-02 9:58 ` Eric Dumazet [this message]
2012-02-06 23:43 ` Rusty Russell
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