--- zzzz-none-000/linux-4.19.183/kernel/irq_work.c	2021-03-24 10:07:39.000000000 +0000
+++ bcm63-7530ax-756/linux-4.19.183/kernel/irq_work.c	2023-06-28 08:54:21.000000000 +0000
@@ -17,6 +17,9 @@
 #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>
 
 
@@ -105,6 +108,10 @@
 	if (!irq_work_claim(work))
 		return false;
 
+#if defined(CONFIG_BCM_KF_BUZZZ) && defined(CONFIG_BUZZZ_KEVT)
+	BUZZZ_KNL3(IRQ_WORK, cpu, work->func);
+	/*TODO should we distinguish between local & IPI cpu here */
+#endif
 	preempt_disable();
 	if (cpu != smp_processor_id()) {
 		/* Arch remote IPI send/receive backend aren't NMI safe */