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    SubjectRe: PREEMPT_RT (2.6.33-rt17) disabled printk-to-console after console_init
    From
    http://www.vanemery.com/Linux/Serial/serial-console.html

    Could this be of help.

    On Thu, May 20, 2010 at 2:03 PM, Nikita V. Youshchenko <yoush@cs.msu.su> wrote:
    >> > I could not get dmesg output to console/serial and
    >> > klogd(/var/log/messages) anymore with 2.6.33-rt17 _after_ the kernel
    >> > boot is done(on non-RT kernel it works fine). I made below changes it
    >> > starts to work again, however I'm unsure how safe the change is.
    >> > Please advise.
    >>
    >> Well, obviously it's unsafe if you remove safety checks. And if you
    >> care to look at the changelog of kernel/printk.c you'll find out why.
    >
    > Hmm... did a quick look and could not find anything related there.
    > Could you please give a pointer?
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