From 6bfa9bb5195c68f75bd3937e4d77cb0bfe852d0d Mon Sep 17 00:00:00 2001
From: Andi Kleen <ak@suse.de>
Date: Mon, 26 Jun 2006 13:59:47 +0200
Subject: [PATCH] [PATCH] x86_64: Minor string functions optimizations
- Use tail call from clear_user to __clear_user to save some code size
- Use standard memcpy for forward memmove
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---
arch/x86_64/lib/memmove.c | 2 +-
arch/x86_64/lib/usercopy.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86_64/lib/memmove.c b/arch/x86_64/lib/memmove.c
index 517eb1bd9de5..751ebae8ec42 100644
--- a/arch/x86_64/lib/memmove.c
+++ b/arch/x86_64/lib/memmove.c
@@ -9,7 +9,7 @@
void *memmove(void * dest,const void *src,size_t count)
{
if (dest < src) {
- __inline_memcpy(dest,src,count);
+ return memcpy(dest,src,count);
} else {
char *p = (char *) dest + count;
char *s = (char *) src + count;
diff --git a/arch/x86_64/lib/usercopy.c b/arch/x86_64/lib/usercopy.c
index a82bfacdb1af..893d43f838cc 100644
--- a/arch/x86_64/lib/usercopy.c
+++ b/arch/x86_64/lib/usercopy.c
@@ -55,7 +55,7 @@ strncpy_from_user(char *dst, const char __user *src, long count)
{
long res = -EFAULT;
if (access_ok(VERIFY_READ, src, 1))
- __do_strncpy_from_user(dst, src, count, res);
+ return __strncpy_from_user(dst, src, count);
return res;
}
EXPORT_SYMBOL(strncpy_from_user);
--
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