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-rw-r--r--arch/um/include/kern_util.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/um/include/kern_util.h b/arch/um/include/kern_util.h
index 6c2be26f1d7..b84b5dadb95 100644
--- a/arch/um/include/kern_util.h
+++ b/arch/um/include/kern_util.h
@@ -82,7 +82,9 @@ extern void check_stack_overflow(void *ptr);
extern void relay_signal(int sig, union uml_pt_regs *regs);
extern int user_context(unsigned long sp);
extern void timer_irq(union uml_pt_regs *regs);
+#ifdef CONFIG_MODE_TT
extern void unprotect_stack(unsigned long stack);
+#endif
extern void do_uml_exitcalls(void);
extern int attach_debugger(int idle_pid, int pid, int stop);
extern int config_gdb(char *str);