Published at LXer:
Included in Andrew Morton's potential 2.6.23 merge list were a series of patches to make the x86-64 architecture tickless. Andi Kleen, the x86-64 maintainer replied, "I'm sceptical about the dynticks code. It just rips out the x86-64 timing code completely, which needs a lot more review and testing. Probably not .23." Linus Torvalds agreed, "we are *not* going to do another 'rip everything out, and replace it with new code' again. Over my dead body. We're going to do this thing gradually, or not at all."
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