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    Subject[PATCH 0/4] ptrace: remove PT_DTRACE from arch/* except arch/um
    As Roland pointed out, PT_DTRACE is not actually used except in
    uml and should die.

    Remove it from h8300, avr32, mn10300, parisc, s390, sh, xtensa, m68k,
    m68knommu, m32r. The patches are rather simple (but untested), I tried
    to split the changes by "category".

    With this series arch/um is the only one who uses PT_DTRACE and thinks
    task_lock() is needed for ptrace related code. This will be addressed
    later (tanks Jeff for your reply).

    Oleg.



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