AcoSail/kernel_optimize_test
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MIPS: Optimize get_user and put_user for 64-bit

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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>
This commit is contained in:
Ralf Baechle 2008-10-11 16:18:50 +01:00
parent b6263ff2d6
commit 8d2d91e86b
1 changed files with 4 additions and 4 deletions
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8
include/asm-mips/uaccess.h
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@ -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) { \