diff --git a/arch/sparc/include/asm/setup.h b/arch/sparc/include/asm/setup.h
index b5f5686ca57e..0c4f69528d0d 100644
--- a/arch/sparc/include/asm/setup.h
+++ b/arch/sparc/include/asm/setup.h
@@ -52,6 +52,7 @@ unsigned long safe_compute_effective_address(struct pt_regs *, unsigned int);
 int handle_ldf_stq(u32 insn, struct pt_regs *regs);
 void handle_ld_nf(u32 insn, struct pt_regs *regs);
 
+extern int sysctl_tsb_ratio;
 #endif
 
 void sun_do_break(void);
diff --git a/arch/sparc/mm/tsb.c b/arch/sparc/mm/tsb.c
index f5d506fdddad..33ca9360f591 100644
--- a/arch/sparc/mm/tsb.c
+++ b/arch/sparc/mm/tsb.c
@@ -9,6 +9,7 @@
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/mmu_context.h>
+#include <asm/setup.h>
 #include <asm/tsb.h>
 #include <asm/tlb.h>
 #include <asm/oplib.h>
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 74f5b580fe34..3c202d00f6e8 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -152,10 +152,6 @@ static unsigned long hung_task_timeout_max = (LONG_MAX/HZ);
 #ifdef CONFIG_SPARC
 #endif
 
-#ifdef CONFIG_SPARC64
-extern int sysctl_tsb_ratio;
-#endif
-
 #ifdef __hppa__
 extern int pwrsw_enabled;
 #endif