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    SubjectRe: [RFC] [PATCH 7/7] Ftrace plugin for Uprobes
    Frank Ch. Eigler wrote:
    > Frederic Weisbecker <> writes:
    >> [...]
    >> This is much more tricky in the case of uprobes as I see two
    >> ways to work with it:
    >> - probing on an already running process
    >> - probing on a process we are about to run
    >> [...]
    > As you might expect, in systemtap we've had to figure out this area
    > some time ago. We use another utrace consumer called "task finder"
    > that registers interest in present / future processes, and gives us
    > kernel-space callbacks when these come and go. You could merge it or
    > something like it.

    So, could you tell us how the task-finder works and is implemented?
    I think we'd better clarify what functions are required for uprobes
    and pmu, and I think we may be able to re-implement improved pmu
    on utrace.

    Thank you,

    Masami Hiramatsu

    Software Engineer
    Hitachi Computer Products (America), Inc.
    Software Solutions Division


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