diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 09d220d6be05..bd4fa6930c38 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -794,6 +794,12 @@ struct root_domain {
 	 * CPUs of the rd. Protected by RCU.
 	 */
 	struct perf_domain	*pd;
+
+	/* Vendor fields. */
+	/* First cpu with maximum and minimum original capacity */
+	int max_cap_orig_cpu, min_cap_orig_cpu;
+	/* First cpu with mid capacity */
+	int mid_cap_orig_cpu;
 };
 
 extern struct root_domain def_root_domain;