Hi!
> > > Hmmm, that sounds like the local APIC does not wake up the PIT
> > > interrupt properly after sleep. Hitting the keys causes the timer
> > > interrupt to get called, and that explains why it keeps running. But
> > > the timer ticks are not happening as they should for some reason.
> > > This should not happen (tm)...
> >
> > :-). Any ideas how to debug it? Previous version of patch seemed to work
> > better...
>
> I don't think it's HPET timer, or CONFIG_SMP. It also looks like your
> local APIC timer is working.
>
> If you have a serial console, you can put one letter printks in the
> code. Can you check if you ever get to smp_apic_timer_interrupt()?
> That's where you should get to after the sleep, and that calls the
> PIT timer interrupt to get it going again. I'm thinking that you'll
> get to smp_apic_timer_interrupt(), but once therebut function
> dyn_tick->interrupt(0, NULL, regs) never gets called.
I definitely get to smp_apic_timer_interrupt:
Feb 2 14:46:53 amd kernel:
ic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_ti
Feb 2 14:46:54 amd kernel:
irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsmp_apic_timer_irqsm
I'll test with this code:
if (dyn_tick->state & (DYN_TICK_ENABLED | DYN_TICK_SKIPPING)) {
if (dyn_tick->skip_cpu == cpu && dyn_tick->skip >
DYN_TICK_MIN_SKIP) {
printk("dyn_tick->interrupt\n");
dyn_tick->interrupt(0, NULL, regs);
} else
Pavel
--
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