kqueue for usb_dev

[Kohji Okuno]

Hi HPS and John-Mark,

After I changed as the following, the kernel panic does not happen.
What do you think about this change?

+       knlist_clear(&f->selinfo.si_note, 0);
        knlist_destroy(&f->selinfo.si_note);
 
Regards,
 Kohji Okuno

> We should wait for empty of knlist before knlist_destroy().
> When I tried 262551, the kernel panic at KN_LIST_LOCK(kn) in
> kern_event.c.
> 
> Regards,
>  Kohji Okuno
> 
>> On 02/27/14 10:00, Hans Petter Selasky wrote:
>>> Hi Kohji,
>>>
>>> Can you verify this commit:
>>>
>>> http://svnweb.freebsd.org/changeset/base/262550
>>>
>>> Please test using both read and write direction. For example you can use
>>> the ULPT driver or a /dev/usb/X.X.X node which supports both read and
>>> write.
>>>
>>> Thank you!
>>>
>>> --HPS
>> 
>> And this commit too:
>> http://svnweb.freebsd.org/changeset/base/262551
>> 
>> Thank you!
>> 
>> --HPS
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