On 11/29/2011 12:31 PM, Benjamin Herrenschmidt wrote:

On Tue, 2011-11-29 at 12:12 +0530, Deepthi Dharwar wrote:

quoted

Yes, this could be problematic as there is small window for the
race condition to occur . Otherwise we need to manually schedule
it by running a kernel thread but this would definitely have a
overhead and would be an overkill. 

Depends what this "window" is. IE. What are you trying to protect
yourself against ? What's the risk ?

If it's just module unload, then stop_machine is probably your
friend :-)

Cheers,
Ben.

Yup, it is the module unload that I am worried about. Otherwise
manually doing it using kernel thread would be an overkill -:(

Regards,
Deepthi