--- zzzz-none-000/linux-4.1.52/kernel/irq_work.c	2018-05-28 02:26:45.000000000 +0000
+++ bcm63-7530ax-731/linux-4.1.52/kernel/irq_work.c	2022-03-02 11:37:13.000000000 +0000
@@ -17,9 +17,11 @@
 #include <linux/cpu.h>
 #include <linux/notifier.h>
 #include <linux/smp.h>
+#if defined(CONFIG_BCM_KF_BUZZZ) && defined(CONFIG_BUZZZ_KEVT)
+#include <linux/buzzz.h>
+#endif
 #include <asm/processor.h>
 
-
 static DEFINE_PER_CPU(struct llist_head, raised_list);
 static DEFINE_PER_CPU(struct llist_head, lazy_list);
 
@@ -75,6 +77,10 @@
 	if (!irq_work_claim(work))
 		return false;
 
+#if defined(CONFIG_BCM_KF_BUZZZ) && defined(CONFIG_BUZZZ_KEVT)
+	BUZZZ_KNL3(IRQ_WORK, cpu, work->func);
+#endif
+
 	if (llist_add(&work->llnode, &per_cpu(raised_list, cpu)))
 		arch_send_call_function_single_ipi(cpu);