Re: [REVIEW/TEST] polling(4) changes

From: Luigi Rizzo (rizzo_at_icir.org)
Date: 09/30/05

  • Next message: Gleb Smirnoff: "Re: [REVIEW/TEST] polling(4) changes" 
    Date: Fri, 30 Sep 2005 12:33:33 -0700
To: Andre Oppermann <andre@freebsd.org>

    On Fri, Sep 30, 2005 at 08:29:43PM +0200, Andre Oppermann wrote:
    ...
    > > It adds a stub function call every tick. The function returns almost
    > > immediately if no interfaces do polling.
    >
    > If it does a FOREACH(interface) then it should stay as a kernel option.

    this wasn't the case when i first wrote it - the list of
    interfaces actually using polling was stored into an array and
    the count was in a variable, so the loop was something like

            for (i=0; i < actively_polling_interfaces; i++)
                    foo[i]->poll()

    so it's basically just an extra function call per tick if
    no interfaces are doing polling.

    cheers
    luigi
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