--- zzzz-none-000/linux-4.1.38/kernel/cpu.c	2017-01-18 18:48:06.000000000 +0000
+++ bcm63-7582-715/linux-4.1.38/kernel/cpu.c	2020-11-25 10:06:48.000000000 +0000
@@ -823,3 +823,25 @@
 {
 	cpumask_copy(to_cpumask(cpu_online_bits), src);
 }
+
+#if defined CONFIG_BCM_KF_INTERACTIVE && defined CONFIG_CPU_FREQ_GOV_INTERACTIVE
+static ATOMIC_NOTIFIER_HEAD(idle_notifier);
+
+void idle_notifier_register(struct notifier_block *n)
+{
+	atomic_notifier_chain_register(&idle_notifier, n);
+}
+EXPORT_SYMBOL_GPL(idle_notifier_register);
+
+void idle_notifier_unregister(struct notifier_block *n)
+{
+	atomic_notifier_chain_unregister(&idle_notifier, n);
+}
+EXPORT_SYMBOL_GPL(idle_notifier_unregister);
+
+void idle_notifier_call_chain(unsigned long val)
+{
+	atomic_notifier_call_chain(&idle_notifier, val, NULL);
+}
+EXPORT_SYMBOL_GPL(idle_notifier_call_chain);
+#endif