2.5.7 fails compile on sched.c:1456

[Chris Meadors]

I saw a patch went into the 2.5.7-pre series that was supposed control the
compilation of the preempt code, maybe its not quite right yet.

Building in my dual Alpha with SMP enabled fails with this:

sched.c: In function `init_idle':
sched.c:1456: structure has no member named `preempt_count'

-Chris
-- 
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said, "I might be..."                         --David Lynch, Twin Peaks