On Thu, 2012-09-13 at 14:20 +0200, Stephane Eranian wrote: > On Thu, Sep 13, 2012 at 2:16 PM, Peter Zijlstra <[email protected]> wrote: > > On Wed, 2012-09-12 at 17:37 +0200, Stephane Eranian wrote: > > > >> Note however that the rotation_list is still used in perf_event_task_tick() > >> to iterate over the ctx which needs unthrottling. We would have to switch > >> that loop over to a for-each-pmu() which would necessary incur more > >> iterations as it would include all the SW PMUs. > > > > Oh urgh, right. I think that was one of the reasons I bailed on the > > hrtimer thing, the frequency and throttle stuff. > > > > ctx->nr_freq and needs_unthr could help, but yeah. > > I think for now, we could keep rotation list for the unthrottling. > Multiplexing won't use rotation_list anymore.
wouldn't that still have the problem where we take the sw-pmus off of the rotation-list? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
