Andrew Morton wrote:
> Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
> >
> > It seems the heuristic is more complicated
>
> Any suggestions?
Does this pseudocode look like it would work? It should make it
only complain if two or more interrupts in a row go unhandled.
int last_irq_was_dropped[NR_IRQS];
/* call each handler in turn for this irq */
for (each_driver(irq)) {
ret = call_driver();
if (ret == irq_handled) {
if (unlikely(last_irq_was_dropped[irq])
last_irq_was_dropped[irq] = 0;
break;
}
}
if (ret != irq_handled) {
if (unlikely(last_irq_was_dropped[irq]))
complain();
else
last_irq_was_dropped[irq] = 1;
}
-
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This archive was generated by hypermail 2b29 : Wed May 07 2003 - 22:00:28 EST