Messages in this thread | | | From | "Liang, Kan" <> | Subject | RE: [PATCH V2 04/13] perf/core: output multiplexing overhead | Date | Tue, 6 Dec 2016 15:04:48 +0000 |
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> On Fri, Dec 02, 2016 at 04:19:12PM -0500, kan.liang@intel.com wrote: > > From: Kan Liang <kan.liang@intel.com> > > > > Multiplexing overhead is one of the key overhead when the number of > > events is more than available counters. > > > > The multiplexing overhead PERF_CORE_MUX_OVERHEAD is a common > overhead > > type. > > > > > diff --git a/include/uapi/linux/perf_event.h > > b/include/uapi/linux/perf_event.h index fe7b1fb..355086f 100644 > > --- a/include/uapi/linux/perf_event.h > > +++ b/include/uapi/linux/perf_event.h > > @@ -999,6 +999,7 @@ struct perf_branch_entry { > > */ > > enum perf_record_overhead_type { > > PERF_CORE_OVERHEAD = 0, > > + PERF_CORE_MUX_OVERHEAD = 0, > > '0' already had a name ?!
PERF_CORE_OVERHEAD is only used to indicate the start of core overhead type. I will use comment line to replace PERF_CORE_OVERHEAD.
Thanks, Kan
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