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    SubjectRe: [PATCH][GIT PULL] powerpc64/tracing: Add frame buffer to calls of trace_hardirqs_on/off
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    On Sat, 2010-12-25 at 16:04 -0500, Steven Rostedt wrote:
    >
    > Note, when CONFIG_IRQSOFF_TRACE is set, there's already a bit of
    > overhead :-)
    >
    > Anyway, I'll have to take a look at how the frame pointer is set up.
    > Or
    > we could also set up all stacks coming into the kernel to have a
    > "dummy"
    > frame pointer that wont hurt anything if we index into it.
    >
    > Anyway, I'm off till the new year, so I'll worry about it then ;-)

    Right, might be simpler to just make them loop back onto themselves or
    something like that. I can have a look too if I get a chance.

    Cheers,
    Ben.



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