On 12 November 2014 20:36, Peter Zijlstra <pet...@infradead.org> wrote: > I don't think you need to add anything. We already have tracepoints for > every single interrupt (and therefore also for the hrtimer one) and we > have expiry tracepoints.
I will crosscheck this again but as far as I remember these spurious interrupts aren't caught with tracers currently. Not even the irq_enter/exit ones. I saw that piece of code long back (and obviously don't understand it completely). But the problem was that because these are spurious clockevent interrupts, we don't have anything to do on that interrupt. No tick/sched/softirq processing. And the irq-handling code returns before even calling trace_irq_enter(). And that's why I had to add those prints initially. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
