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    SubjectUpdated preempt-kernel patches
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    Updated preempt-kernel patches for 2.4.10, 2.4.12, 2.4.13-pre1, and
    (phew!) 2.4.12-ac1 are available at:

    http://tech9.net/rml/linux

    Note the patches for 2.4.10 are updated over previously releases.

    These patches allow create a preemptible kernel -- increasing system
    response time. Everyone is encouraged to give it a whirl and report
    back.

    Major changes include code to prevent CPU changes on preempt (should
    prevent a class of race conditions), an SMP compile fix, and various
    cleanups.

    Full change log:

    20011011
    - remove pgalloc.h preemption disable statements -- not
    needed with the new CPU switch prevention
    - fix compile on SMP in some configurations (ac tree only)

    20011005
    - rearrange sched.c so we can patch cleanly against rtsched
    (or vice versa)

    20011004
    - prevent the case of preemption causing a CPU switch
    by locking tasks to the current CPU in preempt_schedule
    - revert to _raw_spin_xxx from _spin_xxx since PPC uses
    that convention.

    20011003
    - push pcmcia-cs tools fix into their next release

    20011001
    - fix spin_lock_prefetch optimization causing (harmless)
    compile warnings

    Robert Love

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