--- zzzz-none-000/linux-4.1.52/include/linux/cpu.h	2018-05-28 02:26:45.000000000 +0000
+++ bcm63-7530ax-731/linux-4.1.52/include/linux/cpu.h	2022-03-02 11:37:13.000000000 +0000
@@ -291,4 +291,13 @@
 bool cpu_report_death(void);
 #endif /* #ifdef CONFIG_HOTPLUG_CPU */
 
+#if defined CONFIG_BCM_KF_INTERACTIVE && defined CONFIG_CPU_FREQ_GOV_INTERACTIVE
+#define IDLE_START 1
+#define IDLE_END 2
+
+void idle_notifier_register(struct notifier_block *n);
+void idle_notifier_unregister(struct notifier_block *n);
+void idle_notifier_call_chain(unsigned long val);
+#endif
+
 #endif /* _LINUX_CPU_H_ */