[2.6 patch] smp{,boot}.c cleanups

This patch contains the following cleanups on several architectures: - make some needlessly global code static - remove the following write-only (except for printk's) variables: - cache_decay_ticks - smp_threads_ready - cacheflush_time I've only tried the compilation on i386, but I hope all

[2.6 patch] smp{,boot}.c cleanups

The patch below contains the following cleanups on several architectures: - make some needlessly global code static - remove the following write-only (except for printk's) variables: - cache_decay_ticks - smp_threads_ready - cacheflush_time On ppc64, this patch depends on Anton Blanchard's