CONFIG_PREEMPT for Feisty?

[John Richard Moser]

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Is CONFIG_PREEMPT ready for Feisty, or vice versa?

CONFIG_PREEMPT allows the kernel to achieve millisecond-level latencies
by preemping in kernel mode.  Currently Edgy and Feisty both use
CONFIG_PREEMPT_VOLUNTARY.  Voluntary Preempt allows a high priority
process to be preempted by a lower priority one in certain cases, but
doesn't make the kernel preemptable.

Soon Ingo's real-time patches should be ready for mainline, which means
the choices will be between no preemption; low latencies (voluntary);
millisecond (preempt); and microsecond (real-time).  Ideally it would be
possible to switch between these via a boot parameter but I suspect that
would be difficult to get exactly right.


- --
    We will enslave their women, eat their children and rape their
    cattle!
                  -- Bosc, Evil alien overlord from the fifth dimension
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