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    SubjectRe: [PATCH] dynamic tick patch
    On Fri, 21 Jan 2005, Tony Lindgren wrote:

    > > This doesn't seem to cover the local APIC timer, what do you do about the
    > > 1kHz tick which it's programmed to do?
    >
    > Sorry for the delay in replaying. Thanks for pointing that out, I
    > don't know yet what to do with the local APIC timer. Have to look at
    > more.

    Pavel does your test system have a Local APIC? If so that may also explain
    why you didn't see a difference.

    Tony, something like the following for oneshot should work, untested of
    course. Perhaps you could use that for the wakeup interrupt instead?

    void setup_oneshot_apic_timer(unsigned int count)
    {
    unsigned int lvtt, tmp_value;
    unsigned long flags;

    count *= calibration_result;
    local_irq_save(flags);
    lvtt = ~APIC_LVT_TIMER_PERIODIC | LOCAL_TIMER_VECTOR;
    apic_write_around(APIC_LVTT, lvtt);
    tmp_value = apic_read(APIC_TDCR);
    apic_write_around(APIC_TDCR, (tmp_value
    & ~(APIC_TDR_DIV_1 | APIC_TDR_DIV_TMBASE))
    | APIC_TDR_DIV_16);

    apic_write_around(APIC_TMICT, count/APIC_DIVISOR);
    local_irq_restore(flags);
    }
    -
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