Messages in this thread | | | Date | Mon, 3 Jul 2017 13:59:22 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH V2 2/2] perf tools: always set no branch for dummy event in PT |
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Em Mon, Jul 03, 2017 at 09:58:32AM +0200, Jiri Olsa escreveu: > On Fri, Jun 30, 2017 at 10:16:56AM -0400, kan.liang@intel.com wrote: > > From: Kan Liang <kan.liang@intel.com> > > > > An earlier kernel patch allowed enabling PT and LBR at the same time on > > Goldmont. > > > > commit ccbebba4c6bf ("perf/x86/intel/pt: Bypass PT vs. LBR exclusivity > > if the core supports it") > > > > However, users still cannot use Intel PT and LBRs simultaneously. > > $ sudo perf record -e cycles,intel_pt//u -b -- sleep 1 > > Error: > > PMU Hardware doesn't support sampling/overflow-interrupts. > > > > PT implicitly adds dummy event in perf tool. dummy event is software > > event which doesn't support LBR. > > > > Always setting no branch for dummy event in Intel PT. > > > > Signed-off-by: Kan Liang <kan.liang@intel.com> > > for the patchset: > > Acked-by: Jiri Olsa <jolsa@kernel.org>
Thanks, applied.
- Arnaldo
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