Date: Wed, 3 Sep 2008 10:32:00 +0100 From: "kr Lekha" <kr.lekha@gmail.com> To: freebsd-current@freebsd.org Subject: Kthread kill Message-ID: <96b2ec350809030232v5586ea44nf6ead7d856f72634@mail.gmail.com>
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Hi,
i wanted to kill a kthread created by my module, There is no actual
kthread_kill to kill it
hence I tried to send kill signal to thread
psignal(p, SIGTERM);
psignal(p, SIGKILL);
killproc(p,"messeage");
and kthread_suspend()
Nothing seems to be killing the kthread, I still see it
[root@ /usr/src]# ps awx -l | grep kernel
UID PID PPID CPU PRI NI VSZ RSS MWCHAN STAT TT TIME COMMAND
0 1048 1 0 20 0 0 8 ktsusp DL
?? 0:00.01 [new_kernel_thread]
I have noticed that generally if kernel module wanted to kill a thread then
it calls
{
wakeup(p);
msleep(p,0); /*or tsleep*/
}
This puts the thread to sleep forever. However kthread_suspend also performs
same actions.
Does scheduler take care to killing it?
I read that after 2 min scheduler wakes up the thread and
eventually kills it,
i see the same kthread suspended even after a day
I would appreciate any thoughts in this reagard.
Thanks,
-lekha
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