Messages in this thread | | | Date | Sun, 29 Apr 2001 01:05:23 +0000 | From | Pavel Machek <> | Subject | Re: Suggestion for module .init.{text,data} sections |
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Hi!
> > A while ago, on linux-kernel, we had a discussion about > > adding support for __initdata and __init in modules. Somebody > > (whose name escapes me) had implemented it by essentially adding > > a vmrealloc() facility in the kernel. I think I've thought of a > > simpler way, that would require almost no kernel changes. > > > [implementation details snipped] > > While you are at this, you could make the .exit.{text,data} > sections swappable for modules (by allocating swappable pages fro > them?) and only mark them unswappable, while the module is > exiting. > > Rationale: A device needed for swaping will never call exit > stuff, because it is still in use. So I see no obvious race here.
You can't do that. Think about interrupt routine being swapped out.
Kernel is *not* preemptible. -- Philips Velo 1: 1"x4"x8", 300gram, 60, 12MB, 40bogomips, linux, mutt, details at http://atrey.karlin.mff.cuni.cz/~pavel/velo/index.html.
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