On Fri, Sep 7, 2012 at 9:08 PM, Peter Zijlstra <pet...@infradead.org> wrote: > On Fri, 2012-09-07 at 19:03 +0200, Stephane Eranian wrote: >> I think having different intervals would be a good thing, especially for >> uncore. >> But now, I am wondering how this could work without too much overhead. >> Looks like you're suggesting arming multiple hrtimers if multiple PMU are >> overcommitted. Is that right? > > Right, we shoulnd't have too many PMUs anyway, let alone over committed > ones, so a timer per cpu per pmu should be fine. > >> As opposed to having a PMU multiplier off of a >> single per-cpu hrtimer.
That's true. I started modifying my code to implement your suggestion. We'll see how it goes. Then we would have to export that mux interval via sysfs for each PMU. -- 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/
