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    SubjectRe: [patch] 2.4.19-pre10-ac2: O(1) scheduler merge, -A3.

    On 16 Jun 2002, Robert Love wrote:

    > > > @@ -1790,4 +1790,4 @@
    > > > while (!cpu_rq(cpu_logical_map(cpu))->migration_thread)
    > > > schedule_timeout(2);
    > > > }
    > > > -#endif
    > > > +#endif /* CONFIG_SMP */
    > >
    > > and this is just silly... I can see the point in doing #if comments in
    > > include files, but the nesting here is just so obvious.
    > I disagree, but OK. I like having the #if marked by the #endif if they
    > are not close... and elsewhere through the kernel mirrors this. While I
    > can scroll up and look - assuming the nesting is sane - a simple comment
    > makes that clear so what is the pain?

    and in this specific sched.c case, are we going to put in magic comments
    every 25 lines inbetween:

    /* this is CONFIG_SMP conditional code */

    just to save us some scrolling up? I dont think #endif is special wrt.
    such comments.

    in header files the #ifdef jungle often makes proper nesting hard. In
    those cases putting comments to #else and #endif makes a real difference
    in readability. But in sched.c there is not a single nested #ifdef. (and
    that's very much intentional.)


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