2 files changed, 10 insertions, 1 deletions

diff --git a/arch/um/include/kern_util.h b/arch/um/include/kern_util.h
index 07176d92e1c9..42557130a408 100644
--- a/arch/um/include/kern_util.h
+++ b/arch/um/include/kern_util.h
@@ -116,7 +116,11 @@ extern void *get_current(void);
 extern struct task_struct *get_task(int pid, int require);
 extern void machine_halt(void);
 extern int is_syscall(unsigned long addr);
-extern void arch_switch(void);
+
+extern void arch_switch_to_tt(struct task_struct *from, struct task_struct *to);
+
+extern void arch_switch_to_skas(struct task_struct *from, struct task_struct *to);
+
 extern void free_irq(unsigned int, void *);
 extern int cpu(void);
 
diff --git a/arch/um/include/sysdep-i386/ptrace.h b/arch/um/include/sysdep-i386/ptrace.h
index c8ee9559f3ab..6670cc992ecb 100644
--- a/arch/um/include/sysdep-i386/ptrace.h
+++ b/arch/um/include/sysdep-i386/ptrace.h
@@ -14,7 +14,12 @@
 #define MAX_REG_NR (UM_FRAME_SIZE / sizeof(unsigned long))
 #define MAX_REG_OFFSET (UM_FRAME_SIZE)
 
+#ifdef UML_CONFIG_PT_PROXY
 extern void update_debugregs(int seq);
+#else
+static inline void update_debugregs(int seq) {}
+#endif
+
 
 /* syscall emulation path in ptrace */