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    SubjectRe: [PATCH 3/3] utrace-based ftrace "process" engine, v2
    Hi -

    On Tue, Mar 31, 2009 at 11:17:42AM +0200, Peter Zijlstra wrote:

    > [...] Right, from my POV something like utrace is desirable, since
    > its basically a huge multiplexer for the debugger state, eventually
    > allowing us to have multiple debuggers attached to the same process.
    > [...]

    Right.

    > Then there is this little thing called frysk which uses it, no idea
    > what kind of kernel space that needs, nor where it lives -- or for
    > that matter, wth it really does ;-)

    Frysk was to be a first user of such an improved ptrace(2) API in
    order to do the sort of background / multiply-connected debugging, but
    that project has been on indefinite hold for about a year. Instead,
    there are experiments under way to extend gdb's backend for that
    capability.

    - FChE


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