Re: Module/kthread/printk question/problem

From: Eric Dumazet
Date: Thu Feb 02 2012 - 04:58:23 EST

Le jeudi 02 fÃvrier 2012 Ã 13:22 +0400, Dmitry Antipov a Ãcrit :
> 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;

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