Messages in this thread | | | Subject | Re: [PATCH v2 2/3] perf: use hrtimer for event multiplexing | From | Peter Zijlstra <> | Date | Thu, 13 Sep 2012 14:16:11 +0200 |
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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.
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