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    SubjectRe: [kerneloops] regression in 2.6.27 wrt "lock_page" and the "hwclock" program
    On Sun, 12 Oct 2008 13:16:12 -0700 (PDT)
    Linus Torvalds <torvalds@linux-foundation.org> wrote:

    >
    >
    > On Sun, 12 Oct 2008, Karel Zak wrote:
    > >
    > > Any suggestion how to nicely implement "don't schedule me out"?
    >
    > There's nothing you can do. If you take a page fault, you're done.
    > Forget about any "can't schedule" or "don't enable interrupts". The
    > kernel _has_ to handle the page fault, and that may involve IO and
    > thus random pauses. No ifs, buts or maybe's about it.
    >
    > This patch may or may not get rid of the warning, at least. It won't
    > fix hwclock, but that's apparently unfixable from the kernel - the
    > thing is just plain buggy.


    it almost sounds like it's trying to do something that ... really the
    kernel should be doing.

    Karel: Can you describe what it WANTS to do so we can see if we can
    just extend the linux kernel to do that the right way?

    --
    Arjan van de Ven Intel Open Source Technology Centre
    For development, discussion and tips for power savings,
    visit http://www.lesswatts.org


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