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    SubjectRe: [RFC PATCH tracing/kprobes 0/5] tracing/kprobes, perf: perf kprobe support
    Em Wed, Sep 30, 2009 at 02:04:18PM +0200, Ingo Molnar escreveu:
    >
    > * 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.

    Agreed.

    - Arnaldo


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