Messages in this thread |  | | | Date | Thu, 10 Jun 2010 19:04:28 +0200 | | From | Frederic Weisbecker <> | | Subject | Re: [PATCH 1/5] perf: Provide a proper stop action for software events |
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On Thu, Jun 10, 2010 at 06:38:34PM +0200, Peter Zijlstra wrote: > On Thu, 2010-06-10 at 18:29 +0200, Frederic Weisbecker wrote: > > > Imagine you have several software and hardware events running on the > > same cpu. Each time you reset this period for a software event, you do > > a hw_pmu_disable() / hw_pmu_enable(), which writes/read the hardware > > register for each hardware events, amongst other wasteful things. > > hw_perf_disable/enable() are on their way out. They should be replaced > with a struct pmu callback. We must remove all these weak functions if > we want to support multiple pmus.
Ok, that's a good news.
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