Olof Johansson
e63f8f439d
[PATCH] ppc64: no prefetch for NULL pointers
...
For prefetches of NULL (as when walking a short linked list), PPC64 will in
some cases take a performance hit. The hardware needs to do the TLB walk,
and said walk will always miss, which means (up to) two L2 misses as
penalty. This seems to hurt overall performance, so for NULL pointers skip
the prefetch alltogether.
Signed-off-by: Olof Johansson <olof@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-04-16 15:24:38 -07:00
..
acpi
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-alpha
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-arm
[PATCH] arm: add comment about dma_supported()
2005-04-16 15:23:57 -07:00
asm-arm26
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-cris
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-frv
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-generic
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-h8300
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-i386
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-ia64
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-m32r
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-m68k
[PATCH] ppc32: fix compilation error in include/asm-m68k/setup.h
2005-04-16 15:24:27 -07:00
asm-m68knommu
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-mips
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-parisc
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-ppc
[PATCH] ppc64: very basic desktop g5 sound support
2005-04-16 15:24:32 -07:00
asm-ppc64
[PATCH] ppc64: no prefetch for NULL pointers
2005-04-16 15:24:38 -07:00
asm-s390
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-sh
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-sh64
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-sparc
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-sparc64
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-um
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-v850
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
asm-x86_64
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
linux
[PATCH] Fix linux/atalk.h header
2005-04-16 15:24:09 -07:00
math-emu
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
media
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
mtd
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
net
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
pcmcia
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
rxrpc
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
scsi
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
sound
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00
video
Linux-2.6.12-rc2
2005-04-16 15:20:36 -07:00