diff --git a/arch/x86_64/kernel/x8664_ksyms.c b/arch/x86_64/kernel/x8664_ksyms.c
index c9dc7e46731e..365e5fbae9a0 100644
--- a/arch/x86_64/kernel/x8664_ksyms.c
+++ b/arch/x86_64/kernel/x8664_ksyms.c
@@ -151,9 +151,6 @@ EXPORT_SYMBOL(cpu_sibling_map);
 EXPORT_SYMBOL(smp_num_siblings);
 #endif
 
-extern void do_softirq_thunk(void);
-EXPORT_SYMBOL(do_softirq_thunk);
-
 #ifdef CONFIG_BUG
 EXPORT_SYMBOL(out_of_line_bug);
 #endif
diff --git a/arch/x86_64/lib/thunk.S b/arch/x86_64/lib/thunk.S
index acc1e2ca7ed7..e49af0032e94 100644
--- a/arch/x86_64/lib/thunk.S
+++ b/arch/x86_64/lib/thunk.S
@@ -42,7 +42,6 @@
 	thunk rwsem_wake_thunk,rwsem_wake
 	thunk rwsem_downgrade_thunk,rwsem_downgrade_wake
 #endif	
-	thunk do_softirq_thunk,do_softirq
 	
 	thunk __down_failed,__down
 	thunk_retrax __down_failed_interruptible,__down_interruptible
diff --git a/include/asm-x86_64/proto.h b/include/asm-x86_64/proto.h
index 3ba8fd45fcb3..977fe58e971c 100644
--- a/include/asm-x86_64/proto.h
+++ b/include/asm-x86_64/proto.h
@@ -53,8 +53,6 @@ extern int sysctl_vsyscall;
 extern int nohpet;
 extern unsigned long vxtime_hz;
 
-extern void do_softirq_thunk(void);
-
 extern int numa_setup(char *opt);
 
 extern int setup_early_printk(char *);