Re: [PATCH 1/3] perf: use hrtimer for event multiplexing

[Peter Zijlstra]

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.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/