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    SubjectRe: [PATCH] cheap lookup of symbol names on oops()
    I've had the stack backtrace cause cascading oops' that scroll until I
    power a machine off. It's a crash - things aren't always going to work
    out. Arguments like that can be made to remove nearly the entire oops
    message.

    The patch as it is now doesn't even add a line of text to the x86 oops
    message. It does add a line to the PPC oops message though. I understand,
    and agree with, the need for brevity in a oops.

    Would you be happy with the lookup function as a config option rather than
    the default?

    } I recently had an oops on my laptop with a rh kernel with I think this
    } stuff in (it decoded the trace to symbols, etc).
    }
    } The only problem was that the machine paniced at the end, with the
    } register dump off the top of the screen. The only thing visible was
    } the trace.
    }
    } As useful as it was to have the trace, the oops was useless because
    } the rest of the information was missing.
    }
    } So why didn't I scroll up? Because shift-pgup needs a task queue to
    } run, which doesn't happen after a panic, just like you can't ctrl-alt-del
    } to reboot (but you can alt-sysrq-b)...
    }
    } Personally, I'd much rather have the standard oops output and be able
    } to scribble down the numbers, and then look them up than to have some
    } snazzy bit of code in the kernel do it for me and scroll the useful
    } information off the screen.
    }
    } (And thanks for reminding me about the oops...)
    }
    } --
    } Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux
    } http://www.arm.linux.org.uk/personal/aboutme.html
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