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    SubjectRe: deadlock caused by printk
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    On Fri, 2011-03-25 at 22:30 +0800, Ming Lei wrote:
    >
    > But seems ftrace can't dump out the messages if system hangs,

    True.

    > so could
    > we introduce a smart and simple "printk" which can be used in any
    > contexts?

    I think you could use early_printk() for that, it doesn't bother with
    all the syslog muck.



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