There's a lockup condition where kswapd ensounters an empty zone which has all
its metadata set to zero.

Fix that by adding explicit checks for empty zones and just skip over them.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch, based on Ken Chen's patch, changes the default 2.5 msec
migration-cutoff value to be based on cache_decay_ticks, which is what
we used for a long time prior the sched-domains code.  (If an
architecture does not set cache_decay_ticks then 2.5 msec is used.)

This causes the following new migration-cutoff values on various SMP
systems:

 x86, variable:

 2-way celeron 466MHz, 128K:        2.5 msec ->  1.0 msec
 2-way/4-way 2.2 GHz P4 Xeon 1MB:   2.5 msec ->  2.0 msec
 8-way P3 700 MHz Xeon 2MB:         2.5 msec ->  6.0 msec

 x64, variable:

 amd64: 2.0 GHz, 1MB:               2.5 msec -> 1.5 msec
 em64t: 3.4 GHz, 1MB:               2.5 msec -> 3.0 msec

 ppc64 [*]:                         2.5 msec -> 2.5 msec (constant)

 ia64:                              2.5 msec -> 10.0 msec (constant)

    [*] ppc64 does not set cache_decay_ticks so we fall back to the
        default.

I believe in light of previous testing we could attempt this for 2.6.9 as
well.  (Note: that the 2.6.9-rc3 patch looks similar but needs to patch
kernel/sched.c.  Note2: this patch is different from Ken's original one.)
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Ken Chen <kenneth.w.chen@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into ppc970.osdl.org:/home/torvalds/v2.6/linux

Signed-off-by: Arun Sharma <arun.sharma@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

+ Add sparse annotations to ia32 subsystem so it checks out cleanly.
+ Add set_fs(KERNEL_DS) in elfcore32.h
+ Use compat_ptr() instead of P()
+ Fix a bug in ia32_sigsuspend() by introducing __ia32_rt_sigsuspend()
Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com>
Signed-off-by: Arun Sharma <arun.sharma@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

into nuts.davemloft.net:/disk1/BK/net-2.6

Signed-off-by: David S. Miller <davem@davemloft.net>

PCMCIA resource management is no longer brain dead, and acts just like
any other bus subsystem.  Therefore, there's no need to play games with
the resource subsystem anymore.
Signed-off-by: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

The physical broadcast ID is determined incorrectly for the i82489DX,
which uses 8-bit physical addressing (32-bit logical).
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This updates the g5_defconfig, among others, it adds irq stacks,
hugetlbfs and cramfs (later is needed for ppl trying to install fedora,
and so often forgotten that I prefer adding it to the defconfig). 
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Put back a secondary declaration of ipi_base_addr in hardirq.h.  It
really is needed for UP builds and there doesn't seem to be an easy
way to avoid include-hell otherwise.

Signed-off-by: davidm@hpl.hp.com
Signed-off-by: Tony Luck <tony.luck@intel.com>

We had hardcoded defines for TI_TASK TI_EXEC_DOMAIN, TI_FLAGS, TI_CPU,
TI_ADDR_LIMIT, TI_PRE_COUNT, TI_RESTART_BLOCK; but only two of these
were ever used.  Remove all from thread_info.h, and generate the two
that we do use (TI_FLAGS and TI_PRE_COUNT) in asm_offsets.c

Patch supplied by Zou Nan hai
Signed-off-by: Tony Luck <tony.luck@intel.com>

The find_udbg_vterm() used to initialize the early boot console
on LPAR machines will not work properly on some recent pSeries
because the firmware is playing tricks with the "phandle" values
used to identify firmware nodes. This patch fixes that by using
the full path instead.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Also, while we are here, s/__inline__/inline/
Signed-off-by: David S. Miller <davem@davemloft.net>

More fun found with the coverity checker.
Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

mmap() done from older !pt_gnu_stack binaries on noexec mounted filesystems
could fail due to the extra PROT_EXEC bit.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

into ppc970.osdl.org:/home/torvalds/v2.6/linux

Patch from Ben Dooks

Fixes compile error in serial driver for S3C2410
until the new serial driver can be finished

Signed-off-by: Ben Dooks 

into ppc970.osdl.org:/home/torvalds/v2.6/linux

Patch from Ian Campbell

Arecent changeset[0] that changed params into an asm function call
broke the PXA build since PXA does not define PARAMS_PHYS therefore
the params_phys variable is never defined and linking arch/arm/boot/compressed/head.S fails.

The function is defined in include/asm-arm/arch-rpc/uncompress.h 
and so I assume it is dependendant on CONFIG_ARCH_RPC. I can't find 
any use of it outside this file.

Signed-off-by: Ian Campbell 

Patch from Ben Dooks

Fix Intel Errata #31 for PXA CPUs, where the 
state of some external lines can be indeterminate
over sleep if PXBus >=133MHz on suspend

Signed-off-by: Ben Dooks 

Patch from Ben Dooks

Fix the set_irq_type() for EINTs 0 through 3

Cleaned up the inital clearing of any pending IRQs

Signed-off-by: Klaus Fetscher 
Signed-off-by: Ben Dooks 

into nuts.davemloft.net:/disk1/BK/acme-2.6

Thanks to Thomas Graf for spotting this.
Signed-off-by: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
Signed-off-by: David S. Miller <davem@redhat.com>

The token ring code in the kernel is bitrotting (no surprise :) ),
it uses skb->data all around... I have an assortment of token ring
cards but no MAU, can anybody send me one, please? I promise to
make ssh work over LLC over Token Ring networks! Duh... :o)
Signed-off-by: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
Signed-off-by: David S. Miller <davem@redhat.com>

Signed-off-by: Arnaldo Carvalho de Melo <acme@conectiva.com.br>
Signed-off-by: David S. Miller <davem@redhat.com>

Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: David S. Miller <davem@davemloft.net>

Signed-off-by: David S. Miller <davem@davemloft.net>

into nuts.davemloft.net:/disk1/BK/acme-2.6

into nuts.davemloft.net:/disk1/BK/net-2.6

into ppc970.osdl.org:/home/torvalds/v2.6/linux

Whoops. Missing entry in the PCI ID tables.

Spotted and fixed by someone at SuSE.
Fished out of SuSE's kernel tree by Christoph Hellwig
Signed-off-by: Dave Jones <davej@redhat.com>

From Terrence Ripperda at NVidia.
Signed-off-by: Dave Jones <davej@redhat.com>

into nuts.davemloft.net:/disk1/BK/acme-2.6

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>