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Linux: Reviewing the Tickless Kernel for x86-64

Jul 14, 2007, 08:00 (0 Talkback[s])


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"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.' He went on to explain 'the patch-set itself actually looks fine, as far as I'm concerned. But it does seem to have that 'enable everything in one go' problem. I'd much rather see one time source at a time being converted, and enabled then and there, so that when people report problems and do a bisection, if it was HPET that broke, you get the commit that changed HPET...'"

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