The patch titled
i386: optimize memset of 6 and 8 bytes
has been added to the -mm tree. Its filename is
i386-optimize-memset-of-6-and-8-bytes.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: i386: optimize memset of 6 and 8 bytes
From: Stephen Hemminger <shemminger@xxxxxxxxxxxxxxxxxxxx>
Tne network code does memset for 6 and 8 byte values, that can easily
be optimized into simple assignments without string instructions.
Signed-off-by: Stephen Hemminger <shemminger@xxxxxxxxxxxxxxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/asm-i386/string.h | 8 ++++++++
1 files changed, 8 insertions(+)
diff -puN include/asm-i386/string.h~i386-optimize-memset-of-6-and-8-bytes include/asm-i386/string.h
--- a/include/asm-i386/string.h~i386-optimize-memset-of-6-and-8-bytes
+++ a/include/asm-i386/string.h
@@ -228,6 +228,14 @@ static __always_inline void * __constant
case 4:
*(unsigned long *)s = pattern;
return s;
+ case 6:
+ *(unsigned long *)s = pattern;
+ *(2+(unsigned short *)s) = pattern;
+ return s;
+ case 8:
+ *(unsigned long *)s = pattern;
+ *(1+(unsigned long *)s) = pattern;
+ return s;
}
#define COMMON(x) \
__asm__ __volatile__( \
_
Patches currently in -mm which might be from shemminger@xxxxxxxxxxxxxxxxxxxx are
origin.patch
pci-x-pci-express-read-control-interfaces-mthca.patch
pci-x-pci-express-read-control-interfaces-myrinet.patch
pci-x-pci-express-read-control-interfaces-e1000.patch
git-net.patch
i386-optimize-memset-of-6-and-8-bytes.patch
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