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    SubjectRe: [PATCH tracing/kprobes 0/7] tracing/kprobes: kprobe-based event tracer update and perf support
    On Fri, Sep 11, 2009 at 03:03:35PM -0400, Frank Ch. Eigler wrote:
    > Frederic Weisbecker <fweisbec@gmail.com> writes:
    >
    > > [...] I'm really looking forward seeing this C expression-like
    > > kprobe creation tool. It seems powerful enough to replace printk +
    > > kernel rebuild. No need anymore to write some printk to debug,
    > > worrying, [...]
    >
    > To a large extent, systemtap had delivered this already some years
    > ago, including the cushy ponies dancing in the sunlight. While such
    > low-level machinery is fine, some of our experience indicates that it
    > is dramatically easier to use if high-level, symbolic, debugging data
    > is used to compute probe locations and variable names/types/locations.

    No, systemtap has been for years failing to delivers this in a way that
    it could be usefully integrated into the kernel. Masami's patches are
    exactly the kind of low-level functionality we absolutely need in the
    kernel tree so that we can built more useful higherlevel tools ontop
    of this.



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