+static int intel_pmu_bts_config(struct perf_event *event)
+{
+ struct perf_event_attr *attr = &event->attr;
+
+ if (unlikely(intel_pmu_has_bts(event))) {
+ /* BTS is not supported by this architecture. */
+ if (!x86_pmu.bts_active)
+ return -EOPNOTSUPP;
+
+ /* BTS is currently only allowed for user-mode. */
+ if (!attr->exclude_kernel)
+ return -EOPNOTSUPP;
+
+ /* disallow bts if conflicting events are present */
+ if (x86_add_exclusive(x86_lbr_exclusive_lbr))
+ return -EBUSY;
+
+ event->destroy = hw_perf_lbr_event_destroy;
+ }
+
+ return 0;
+}
+
+static int core_pmu_hw_config(struct perf_event *event)
+{
+ int ret = x86_pmu_hw_config(event);
+
+ if (ret)
+ return ret;
+
+ return intel_pmu_bts_config(event);
+}
+