Hi Peter, While looking at something else I noticed that the exclusive event filter only allows one such event per context, whereas it should allow one such event from each PMU that has PERF_PMU_CAP_EXCLUSIVE. At the same time, intel_bts PMU doesn't even have this capability set (which is why on systems that allow coexistance of PT and BTS it still works, see ccbebba4c6 for more context).
Alexander Shishkin (2): perf/x86/intel/bts: Make it an exclusive PMU perf: Limit matching exclusive events to one PMU arch/x86/events/intel/bts.c | 3 ++- kernel/events/core.c | 2 +- 2 files changed, 3 insertions(+), 2 deletions(-) -- 2.9.3