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    SubjectRe: [patch 8/9] Add time_update_mt_guess()
    Date
    On Thursday 01 February 2007 11:00, jbohac@suse.cz wrote:

    > Index: linux-2.6.20-rc5/arch/x86_64/kernel/apic.c
    > ===================================================================
    > --- linux-2.6.20-rc5.orig/arch/x86_64/kernel/apic.c
    > +++ linux-2.6.20-rc5/arch/x86_64/kernel/apic.c
    > @@ -63,6 +63,9 @@ int using_apic_timer __read_mostly = 0;
    >
    > static void apic_pm_activate(void);
    >
    > +extern void time_update_mt_guess(void);

    No externs in .c files


    > +inline u64 mt_to_nsec(u64 mt)
    > +{
    > + u64 ret;
    > + ret = ((mt & 0xffffff) * vxtime.mt_q) >> 32;
    > + mt >>= 24;
    > + ret += ((mt & 0xffffff) * vxtime.mt_q) >> 8;
    > + mt >>= 24;
    > + ret += ( mt * vxtime.mt_q) << 16;
    > + return ret;

    Why so complicated? Isn't a single multiply good enough?

    -Andi
    -
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