Messages in this thread | | | Date | Mon, 14 Nov 2005 07:42:22 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: start_kernel / local_irq_enable() can be very slow |
| |
On Sun, 13 Nov 2005, Andrew Morton wrote: > > You could do something like: > > int trace_irqs; > > trace_irqs = 1; > local_irq_enble(); > trace_irqs = 0;
Do "trace_irqs = 10" first.
> then, over in handle_IRQ_event(): > > if (trace_irqs) > print_symbol("calling %s\n", (unsigned long)action->handler);
And decrement it here somewhere.
If it's delayed by up to three seconds, it sounds like there's a _lot_ of interrupts happening, and I don't think there's any point in showing all of them.
Linus - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |