compat: Make compat helpers independent of CONFIG_COMPAT

Many of the compat time syscalls are also repurposed as 32 bit
native syscalls to provide backward compatibility while adding
new y2038 safe sycalls.
Enabling the helpers makes this possible.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

include/linux/compat.h

@@ -8,8 +8,6 @@
 
 #include <linux/types.h>
 
-#ifdef CONFIG_COMPAT
-
 #include <linux/stat.h>
 #include <linux/param.h>	/* for HZ */
 #include <linux/sem.h>
@@ -20,9 +18,11 @@
 #include <linux/uaccess.h>
 #include <linux/unistd.h>
 
+#ifdef CONFIG_COMPAT
 #include <asm/compat.h>
 #include <asm/siginfo.h>
 #include <asm/signal.h>
+#endif
 
 #ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
 /*
@@ -83,6 +83,8 @@
 	static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
 #endif /* COMPAT_SYSCALL_DEFINEx */
 
+#ifdef CONFIG_COMPAT
+
 #ifndef compat_user_stack_pointer
 #define compat_user_stack_pointer() current_user_stack_pointer()
 #endif
@@ -1016,7 +1018,9 @@ static inline struct compat_timeval ns_to_compat_timeval(s64 nsec)
 #else /* !CONFIG_COMPAT */
 
 #define is_compat_task() (0)
+#ifndef in_compat_syscall
 static inline bool in_compat_syscall(void) { return false; }
+#endif
 
 #endif /* CONFIG_COMPAT */