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* Hua Zhong <hzhong@gmail.com> wrote: > We are just trading accuracy for speed here. no, we are trading _both_ accuracy and speed here! a global 'likeliness' pointer for commonly executed codepaths is causing global cacheline ping-pongs - which is as bad as it gets. the right approach, which incidentally would also be perfectly accurate, is to store an alloc_percpu()-ed pointer at the call site, not the counter itself. the current code needs more work before it can go upstream i think. Ingo - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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