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
..
iSeries	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
8253pit.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
a.out.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
abs_addr.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
agp.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
atomic.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
bitops.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
bootinfo.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
btext.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
bug.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
bugs.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
byteorder.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
cache.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
cacheflush.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
checksum.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
compat.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
cputable.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
cputime.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
current.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
dbdma.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
delay.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
div64.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
dma-mapping.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
dma.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
eeh.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
elf.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
errno.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
fcntl.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
floppy.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
hardirq.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
hdreg.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
hvcall.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
hvconsole.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
hvcserver.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
hw_irq.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
ide.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
io.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
ioctl.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
ioctls.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
iommu.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
ipc.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
ipcbuf.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
irq.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
kdebug.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
keylargo.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
kmap_types.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
kprobes.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
linkage.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
lmb.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
local.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
lppaca.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
machdep.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
macio.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
mc146818rtc.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
memory.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
mman.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
mmu_context.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
mmu.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
mmzone.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
module.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
msgbuf.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
naca.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
namei.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
numnodes.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
nvram.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
of_device.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
paca.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
page.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
param.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
parport.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
pci-bridge.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
pci.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
percpu.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
pgalloc.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
pgtable.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
plpar_wrappers.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
pmac_feature.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
pmac_low_i2c.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
pmc.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
poll.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
posix_types.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
ppc32.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
ppc_asm.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
ppcdebug.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
processor.h	[PATCH] ppc64: no prefetch for NULL pointers	2005-04-16 15:24:38 -07:00
prom.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
pSeries_reconfig.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
ptrace-common.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
ptrace.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
resource.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
rtas.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
rwsem.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
scatterlist.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
seccomp.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
sections.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
segment.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
semaphore.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
sembuf.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
serial.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
setup.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
shmbuf.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
shmparam.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
sigcontext.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
siginfo.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
signal.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
smp.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
smu.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
socket.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
sockios.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
spinlock.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
sstep.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
stat.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
statfs.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
string.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
system.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
systemcfg.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
termbits.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
termios.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
thread_info.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
time.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
timex.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
tlb.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
tlbflush.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
topology.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
types.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
uaccess.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
ucontext.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
udbg.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
unaligned.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
uninorth.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
unistd.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
user.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
vdso.h	[PATCH] ppc64: Improve mapping of vDSO	2005-04-16 15:24:35 -07:00
vga.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
vio.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
xics.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00
xor.h	Linux-2.6.12-rc2	2005-04-16 15:20:36 -07:00