Re: [RFC PATCH] Allow optional module parameters

Lucas De Marchi
2013-07-03T21:31:56Z

On Wed, Jul 3, 2013 at 6:23 PM, Michal Marek <mmarek@suse.cz> wrote:
> Dne 3.7.2013 23:17, Andy Lutomirski napsal(a):
>> On Wed, Jul 3, 2013 at 2:03 PM, Michal Marek <mmarek@suse.cz> wrote:
>>> Dne 1.7.2013 18:33, Jonathan Masters napsal(a):
>>>> One caveat. Sometimes we have manufactured parameters intentionally
>>>> to cause a module to fail. We should standardize that piece.
>>>
>>> You have:
>>>
>>> blacklist foo
>>>
>>> to prevent udev from loading a module and
>>>
>>> install foo /bin/true
>>>
>>> to prevent modprobe from loading the module at all. What is the
>>> motivation for inventing a third way, through adding invalid parameters?
>>>
>>
>> FWIW, I've occasionally booted with modulename.garbage=1 to prevent
>> modulename from loading at boot. It may be worth adding a more
>> intentional way to do that.
>
> Hm, right, there seems to be no clean way to achieve this via a
> commandline argument. Maybe define a magic module option to tell the
> module loader not to load a module?

modprobe.blacklist=modname1,modname2,... is already there, though all
the silliness of blacklist applies unless "-b" is passed (that's the
equivalent behavior of udev)

Lucas De Marchi