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authorRalf Baechle <ralf@linux-mips.org>2008-10-11 16:18:50 +0100
committerRalf Baechle <ralf@linux-mips.org>2008-10-11 16:18:50 +0100
commit8d2d91e86b4153cc2305ec86fe908048f459ff7f (patch)
tree07c64a1267d2b6f07da7b4be340e8823baea85a4
parentb6263ff2d6e58cc2fe615219ab2a06778b5e6cef (diff)
MIPS: Optimize get_user and put_user for 64-bit
A long for the error value leads to unnecessary sign extensions. This patch shrinks an ip27_defconfig kernel build with gcc 4.3.0 by 2256 bytes. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--include/asm-mips/uaccess.h8
1 files changed, 4 insertions, 4 deletions
diff --git a/include/asm-mips/uaccess.h b/include/asm-mips/uaccess.h
index 66523d61095..b895144d577 100644
--- a/include/asm-mips/uaccess.h
+++ b/include/asm-mips/uaccess.h
@@ -224,7 +224,7 @@ do { \
#define __get_user_nocheck(x, ptr, size) \
({ \
- long __gu_err; \
+ int __gu_err; \
\
__get_user_common((x), size, ptr); \
__gu_err; \
@@ -232,7 +232,7 @@ do { \
#define __get_user_check(x, ptr, size) \
({ \
- long __gu_err = -EFAULT; \
+ int __gu_err = -EFAULT; \
const __typeof__(*(ptr)) __user * __gu_ptr = (ptr); \
\
if (likely(access_ok(VERIFY_READ, __gu_ptr, size))) \
@@ -304,7 +304,7 @@ do { \
#define __put_user_nocheck(x, ptr, size) \
({ \
__typeof__(*(ptr)) __pu_val; \
- long __pu_err = 0; \
+ int __pu_err = 0; \
\
__pu_val = (x); \
switch (size) { \
@@ -321,7 +321,7 @@ do { \
({ \
__typeof__(*(ptr)) __user *__pu_addr = (ptr); \
__typeof__(*(ptr)) __pu_val = (x); \
- long __pu_err = -EFAULT; \
+ int __pu_err = -EFAULT; \
\
if (likely(access_ok(VERIFY_WRITE, __pu_addr, size))) { \
switch (size) { \