Hi all,
I have got the answer of the problem.
After wait_event_interruptible(...); in the kernel thread, there is a
statement like this:
if (signal_pending(current))
complete_and_exit(...);
the problem is in Linux-2.6.15, the signal_pending(current) returns false,
even I send a signal to the sleeping kernel thread, so that the kernel thread
will loop forever.......
So, now the problem is why signal_pending(current) returns false in my
condition in Linux-2.6.15, with catting /proc/pidofthread/status, the SigPnd is
000000000000, while ShdPnd is not zero.
I think as for killing a kernel thread, Linux-2.6 will set another variable
ShdPnd, instead of SigPnd.
Would you like to give me more details?
Thank you and regards,
SiMitel
26-Feb-2007
Tao Wang <[EMAIL PROTECTED]> wrote: Hi all,
I am now writing a kernel module for linux2.6.16. And I can insert it
properly. But I can not rmmod it. I found that the kernel thread created by the
module can not continue to run after wait_event_interruptible(my_wq, condition);
The mod_exit() is something like:
mod_exit()
{
condition = true;
wake_up_interruptible(&my_wq);
}
When I use interruptible_sleep_on(&my_wq) instead of
wait_event_interruptible(my_wq, condition); I can rmmod the module, but get a
kernel oops.
Would you like to help me with it?
Thank you and regards,
Feb-25-2007
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