Re: printk timestamps jumping back and forth in 2.6.25-rc.

[David Miller]

From: Paul Mackerras <paulus@xxxxxxxxx>
Date: Fri, 29 Feb 2008 22:11:26 +1100

> On powerpc we use the timebase register, which is synchronized across
> CPUs, so if this will add unnecessary overhead, we will want to way to
> turn it off on powerpc (assuming this ends up going upstream).

Similarly on sparc64, all of our TSCs are fully synchronized so
this complexity is completely unnecessary.
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