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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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