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    SubjectRe: [PATCH] Export irq tracepoints for use by kernel modules
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    On Tue, Apr 22, 2014 at 10:26 AM, Christoph Hellwig <hch@infradead.org> wrote:
    > On Tue, Apr 22, 2014 at 07:24:20AM -0700, Drew Richardson wrote:
    >> After commit de7b2973903c6cc50b31ee5682a69b2219b9919d ("tracepoint:
    >> Use struct pointer instead of name hash for reg/unreg tracepoints"),
    >> any tracepoints used in a kernel module must be exported.
    >
    > How does this matter given that there aren't any modular users?

    We had a bug report about this breaking systemtap type usage[1]. In
    there, Matthieu suggested that the new for_each_kernel_tracepoint
    interface be used.

    Drew, it would have been proper to CC the author of the change you're
    referencing on all of your patches to export these symbols.

    josh

    [1] https://bugzilla.redhat.com/show_bug.cgi?id=1087623


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