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    SubjectRe: [RFC] div64_64 support
    On Fri, Feb 23, 2007 at 17:05:27 -0800, Stephen Hemminger wrote:
    > Since there already two users of full 64 bit division in the kernel,
    > and other places maybe hiding out as well. Add a full 64/64 bit divide.
    >
    > Yes this expensive, but there are places where it is necessary.
    > It is not clear if doing the scaling buys any advantage on 64 bit platforms,
    > so for them a full divide is done.

    Still does not work after these fixes... how came?

    WARNING: "div64_64" [net/netfilter/xt_connbytes.ko] undefined!
    WARNING: "div64_64" [net/ipv4/tcp_cubic.ko] undefined!

    --- linux-2.6.19/include/asm-i386/div64.h.bak 2006-11-29 23:57:37.000000000 +0200
    +++ linux-2.6.19/include/asm-i386/div64.h 2007-02-24 16:24:55.822529880 +0200
    @@ -45,4 +45,7 @@ div_ll_X_l_rem(long long divs, long div,
    return dum2;

    }
    +
    +extern uint64_t div64_64(uint64_t dividend, uint64_t divisor);
    +
    #endif
    --- linux-2.6.19/lib/div64.c.bak 2007-02-24 16:10:03.686084000 +0200
    +++ linux-2.6.19/lib/div64.c 2007-02-24 17:01:11.224517353 +0200
    @@ -80,4 +80,6 @@ uint64_t div64_64(uint64_t dividend, uin
    return dividend;
    }

    +EXPORT_SYMBOL(div64_64);
    +
    #endif /* BITS_PER_LONG == 32 */
    --
    -
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