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authorRalf Baechle <ralf@linux-mips.org>2005-09-06 15:17:51 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-09-07 16:57:36 -0700
commiteed74dfcd48101d259012ac08d29061eea500249 (patch)
tree4796e0c960a45c6e6fefbd4452c73122ef3ce12d
parent82a25b5670eef736a20613f8b93fe55ecb5ca4bc (diff)
downloadop-kernel-dev-eed74dfcd48101d259012ac08d29061eea500249.zip
op-kernel-dev-eed74dfcd48101d259012ac08d29061eea500249.tar.gz
[PATCH] optimise 64bit unaligned access on 32bit kernel
I've rewriten Atushi's fix for the 64-bit put_unaligned on 32-bit systems bug to generate more efficient code. This case has buzilla URL http://bugzilla.kernel.org/show_bug.cgi?id=5138. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--include/asm-generic/unaligned.h12
1 files changed, 6 insertions, 6 deletions
diff --git a/include/asm-generic/unaligned.h b/include/asm-generic/unaligned.h
index 6c90f0f..4dc8ddb 100644
--- a/include/asm-generic/unaligned.h
+++ b/include/asm-generic/unaligned.h
@@ -16,9 +16,9 @@
* The main single-value unaligned transfer routines.
*/
#define get_unaligned(ptr) \
- ((__typeof__(*(ptr)))__get_unaligned((ptr), sizeof(*(ptr))))
+ __get_unaligned((ptr), sizeof(*(ptr)))
#define put_unaligned(x,ptr) \
- __put_unaligned((unsigned long)(x), (ptr), sizeof(*(ptr)))
+ __put_unaligned((__u64)(x), (ptr), sizeof(*(ptr)))
/*
* This function doesn't actually exist. The idea is that when
@@ -36,19 +36,19 @@ struct __una_u16 { __u16 x __attribute__((packed)); };
* Elemental unaligned loads
*/
-static inline unsigned long __uldq(const __u64 *addr)
+static inline __u64 __uldq(const __u64 *addr)
{
const struct __una_u64 *ptr = (const struct __una_u64 *) addr;
return ptr->x;
}
-static inline unsigned long __uldl(const __u32 *addr)
+static inline __u32 __uldl(const __u32 *addr)
{
const struct __una_u32 *ptr = (const struct __una_u32 *) addr;
return ptr->x;
}
-static inline unsigned long __uldw(const __u16 *addr)
+static inline __u16 __uldw(const __u16 *addr)
{
const struct __una_u16 *ptr = (const struct __una_u16 *) addr;
return ptr->x;
@@ -78,7 +78,7 @@ static inline void __ustw(__u16 val, __u16 *addr)
#define __get_unaligned(ptr, size) ({ \
const void *__gu_p = ptr; \
- unsigned long val; \
+ __typeof__(*(ptr)) val; \
switch (size) { \
case 1: \
val = *(const __u8 *)__gu_p; \
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