Re: try_module_get and friends

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On Tue, 2008-03-04 at 00:28 -0500, Jon Masters wrote:
> On Tue, 2008-03-04 at 00:20 -0500, Jon Masters wrote:
> 
> > So, what's protecting the RT kernel from falling over if a CPU frequency
> > governor module is removed at the wrong moment?
> 
> That's a contrived example, it does the right thing in the ones I've
> looked it, but it just occurred to me that this might not be general for
> kernel code where random pointers to modules are getting thrown around.

I recommend not setting CONFIG_MODULE_UNLOAD on RT kernels for now. I
looked at programmatically implementing this in Kconfig, but it seems
that CONFIG_MODULE_UNLOAD is never explicitly set anywhere, it's simply
in the deconfig for each architecture - anyone know Kconfig well enough
to tell us how to fix up Kconfig.preempt to do the right thing?

Jon.


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