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    SubjectRe: [PATCH] v3 RCU: the bloatwatch edition
    On Fri, 3 Apr 2009 00:36:05 +0200
    Ingo Molnar <> wrote:

    > Andrew, what do you think?

    I'm really struggling to see how the 900-odd bytes saved justifies
    creating (yet another) variant of core kernel machinery.

    > A worry is yet another RCU variant - we already have 3.

    That would make four?

    I wonder if that was sane of us.

    > A trick we could use would be to put it into Documentation/rcu/,
    > linked in via some clever Makefile magic and only usable if a
    > ultra-embedded developer does a build with something like
    > CONFIG_RCU_TINY=y. That way there's no real maintenance and testing
    > overhead.
    > It _does_ have documentation value beyond the ~900 bytes: it's the
    > simplest and smallest possible still-working UP RCU implementation
    > so it would be easy to teach RCU concepts via that, gradually.


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