> From include/linux/prefetch.h: > > "spin_lock_prefetch(x) - prefectches the spinlock *x for taking" > > So this would reduce icache footprint and possibly memory > traffic on UP where taking a spinlock is a noop.
Ah you want to disable it on UP? Ok that makes more sense. Why didn't you just say that? :) Anyways, even on UP it might be useful on all these mutex or whatever lock is envogue these days preemptive kernels. -Andi
