[PATCH] ppc64: uninline some user copy routines

gcc 3.5 is complaining about the size of copy_from_user.  It turns out it
is rather large and putting it out of line saves us about 30kB on a default
kernel build.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/ppc64/lib/Makefile

@@ -3,7 +3,7 @@
 #
 
 lib-y := checksum.o dec_and_lock.o string.o strcase.o
-lib-y += copypage.o memcpy.o copyuser.o
+lib-y += copypage.o memcpy.o copyuser.o usercopy.o
 
 # Lock primitives are defined as no-ops in include/linux/spinlock.h
 # for non-SMP configs. Don't build the real versions.

arch/ppc64/lib/usercopy.c

+/*
+ * Functions which are too large to be inlined.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+#include <asm/uaccess.h>
+
+unsigned long copy_from_user(void *to, const void __user *from, unsigned long n)
+{
+	if (likely(access_ok(VERIFY_READ, from, n)))
+		n = __copy_from_user(to, from, n);
+	else
+		memset(to, 0, n);
+	return n;
+}
+
+unsigned long copy_to_user(void __user *to, const void *from, unsigned long n)
+{
+	if (likely(access_ok(VERIFY_WRITE, to, n)))
+		n = __copy_to_user(to, from, n);
+	return n;
+}
+
+unsigned long copy_in_user(void __user *to, const void __user *from,
+			   unsigned long n)
+{
+	might_sleep();
+	if (likely(access_ok(VERIFY_READ, from, n) &&
+	    access_ok(VERIFY_WRITE, to, n)))
+		n =__copy_tofrom_user(to, from, n);
+	return n;
+}

include/asm-ppc64/uaccess.h

@@ -272,33 +272,12 @@ __copy_to_user(void __user *to, const void *from, unsigned long n)
 #define __copy_in_user(to, from, size) \
 	__copy_tofrom_user((to), (from), (size))
 
-static inline unsigned long
-copy_from_user(void *to, const void __user *from, unsigned long n)
-{
-	if (likely(access_ok(VERIFY_READ, from, n)))
-		n = __copy_from_user(to, from, n);
-	else
-		memset(to, 0, n);
-	return n;
-}
-
-static inline unsigned long
-copy_to_user(void __user *to, const void *from, unsigned long n)
-{
-	if (likely(access_ok(VERIFY_WRITE, to, n)))
-		n = __copy_to_user(to, from, n);
-	return n;
-}
-
-static inline unsigned long
-copy_in_user(void __user *to, const void __user *from, unsigned long n)
-{
-	might_sleep();
-	if (likely(access_ok(VERIFY_READ, from, n) &&
-	    access_ok(VERIFY_WRITE, to, n)))
-		n =__copy_tofrom_user(to, from, n);
-	return n;
-}
+extern unsigned long copy_from_user(void *to, const void __user *from,
+				    unsigned long n);
+extern unsigned long copy_to_user(void __user *to, const void *from,
+				  unsigned long n);
+extern unsigned long copy_in_user(void __user *to, const void __user *from,
+				  unsigned long n);
 
 extern unsigned long __clear_user(void __user *addr, unsigned long size);