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    SubjectRe: Doubt about scheduler
    Nick Piggin wrote:
    > Raúl Baena wrote:
    >
    >> Thank you very much Jon. But I think I haven´t explained very well.
    >>
    >> I know that now the prio_array and runqueues structs aren´t accesible
    >> for modules, but in the 2.6.5 version they were. I would like to know
    >> the reason, why before they were accesible and now they don´t? If you
    >> could answer me, it would be great.
    >
    >
    > I don't remember them being available in 2.6.5... but as to why they
    > aren't available now: it is much cleaner this way. It even benefits
    > you because now nobody will break your module when they change the
    > data structure.

    SuSE patched their 2.6.5 kernel to make the run queues visible in a
    header file. Perhaps Raul was using a SuSE version of 2.6.5.

    >
    >> I could to write the reason in my university job. (In Spain we have to
    >> make a final degree job, and mine is about modules in linux (I chose
    >> this), I would like to show information of the new scheduler, a
    >> scheduler monitor, and these fields are indispensable for me)
    >
    >
    > If your task is about modules in Linux, then I don't see how that
    > involves the scheduler at all?
    >
    > On the other hand, if you want a scheduler monitor then I can't see
    > why it would be appropriate to implement as a module (we have schedstats,
    > which you can read from a userspace program or daemon).
    >
    > Nick
    >

    Peter
    --
    Peter Williams pwil3058@bigpond.net.au

    "Learning, n. The kind of ignorance distinguishing the studious."
    -- Ambrose Bierce
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