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    SubjectRe: [RFC PATCH tracing/kprobes 0/5] tracing/kprobes, perf: perf kprobe support

    * Masami Hiramatsu <mhiramat@redhat.com> wrote:

    > Masami Hiramatsu wrote:
    >>
    >> Hi,
    >>
    >> These patches introduce perf kprobe command and update kprobe-tracer.
    >> perf kprobe command allows you to add new probe points by C line number
    >> and local variable names.
    >
    > Last week, Arnaldo and I talked about this command, and he suggested
    > that the command would be better 'perf probe', because it would be
    > able to cover both of kernel space (by kprobes) and user space (by
    > uprobes).

    Agreed.

    > Basically, I agree with his idea. But I think we may need to consider
    > more flexible syntax for that purpose before we support uprobes. In
    > this area, SystemTap has done big advance, we can see how many
    > varieties of syntax it has by 'man stapprobes'.
    >
    > And also, it's hard to decide it without real uprobe-tracer (and
    > uprobes too!) implementation on ftrace. So, I think it is better to
    > continue using 'perf kprobe' in this time.
    >
    > But it's worth to add to todo list. :)

    I'd still name it 'perf probe', even if initially it supports kprobes.

    Ingo


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