does IPI_PREEMPTION in the kernel config do anything

[Aryeh M. Friedman]

For the last year I have been using IPI_PREEMPTION in my kernel config
and I know back then it helped quite a bit on the performence of my dual
core... now I am setting a 4 core machine using 7.1pl1 (i386) [on the
dual core I {and will continue} to use -current] and was just wondering
if IPI_PREEMPTION actually maeans anything anymore