[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
More about MOD_INC_USE_COUNT
--- Jose Luis Alarcon <jlalarcon@tiggerfan.com> wrote:
>--- John Levon <levon@movementarian.org> wrote:
>>On Sun, Dec 08, 2002 at 12:51:43PM -0800, Jose Luis Alarcon wrote:
>>
>>> I has a big surprise when, adding at the beginning of init_module()
>>> the macro MOD_INC_USE_COUNT, for have a module use counter. My program
>>> get compile well and insmod work too.
>>>
>>> But the surprise was when i did rmmod, cos the output said:
>>>
>>> FATAL: the module is in use
>>
>>Why are you surprised ? You marked the module as used by something when
>>you load it, of course it can't be unloaded.
>>
>
> Jonh: first, thank you very much for answer my question.
>
> I am surprised cos if the line MOD_INC_USE_COUNT; is commented, then
>the lsmod command say that the module is used by 0 (unused, i think) and
>the rmmod command uninstall the module without nothing to say.
>
>>> I did lsmod, and i got that my module was used by [unsafe].
>>
>>You should not be using MOD_INC_USE_COUNT in 2.5 kernels. And you
>>definitely shouldn't be doing it in init_module(), that makes no sense.
>>
>
> Can you explain, please, why the macro have no sense in init_module()?, maybe
>(i am thinking about it) use this counter make no sense in any place at the
>module, but i am learning and i only want to see it working.
>
>>What do you actually believe MOD_INC_USE_COUNT does ?
>>
>
> I was reading that create a counter that count the number of times that the
>module is used, is it right?
>
>>regards
>>john
>>
>
> Thank you, Jonh, again.
>
> Regards.
>
> Jose.
>
One more thing about this:
I put 'MOD_INC_USE_COUNT;' like the last line just before the key (}) that
ends the cleanup_module() void function....and the program load with insmod
and unload with rmmod without problems. lsmod tells that the module is used
by 0 (unused). All this with the 2.5.49 kernel. Maybe was a problem of the
"situation" of the line.......
Regards.
Jose.
Debian GNU/Linux 'Sid' Kernel 2.4.19 Ext3.
ESware Linux 365 Kernel 2.5.49 ReiserFS.
Registered Linux User #213309.
Memories..... You are talking about memories.
Rick Deckard. Blade Runner.
_____________________________________________________________
Get your own free tiggerfan.com email address!!
DisneySites!! - http://www.disneysites.com/webmail/tiggerfan
_____________________________________________________________
Select your own custom email address for FREE! Get you@yourchoice.com w/No Ads, 6MB, POP & more! http://www.everyone.net/selectmail?campaign=tag
--
Kernelnewbies: Help each other learn about the Linux kernel.
Archive: http://mail.nl.linux.org/kernelnewbies/
FAQ: http://kernelnewbies.org/faq/