--- Gnu-Mach/linux/src/include/asm-i386/hardirq.h	2020/09/02 04:43:29	1.1.1.1
+++ Gnu-Mach/linux/src/include/asm-i386/hardirq.h	2020/09/02 04:46:01	1.1.1.2
@@ -4,6 +4,7 @@
 #include <linux/tasks.h>
 
 extern unsigned int local_irq_count[NR_CPUS];
+extern unsigned int local_bh_count[NR_CPUS];
 
 /*
  * Are we in an interrupt context? Either doing bottom half