Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-upstream

mm: show node to memory section relationship with symlinks in sysfs

Show node to memory section relationship with symlinks in sysfs

Add /sys/devices/system/node/nodeX/memoryY symlinks for all
the m

mm: show node to memory section relationship with symlinks in sysfs

Show node to memory section relationship with symlinks in sysfs

Add /sys/devices/system/node/nodeX/memoryY symlinks for all
the memory sections located on nodeX. For example:
/sys/devices/system/node/node1/memory135 -> ../../memory/memory135
indicates that memory section 135 resides on node1.

Also revises documentation to cover this change as well as updating
Documentation/ABI/testing/sysfs-devices-memory to include descriptions
of memory hotremove files 'phys_device', 'phys_index', and 'state'
that were previously not described there.

In addition to it always being a good policy to provide users with
the maximum possible amount of physical location information for
resources that can be hot-added and/or hot-removed, the following
are some (but likely not all) of the user benefits provided by
this change.
Immediate:
- Provides information needed to determine the specific node
on which a defective DIMM is located. This will reduce system
downtime when the node or defective DIMM is swapped out.
- Prevents unintended onlining of a memory section that was
previously offlined due to a defective DIMM. This could happen
during node hot-add when the user or node hot-add assist script
onlines _all_ offlined sections due to user or script inability
to identify the specific memory sections located on the hot-added
node. The consequences of reintroducing the defective memory
could be ugly.
- Provides information needed to vary the amount and distribution
of memory on specific nodes for testing or debugging purposes.
Future:
- Will provide information needed to identify the memory
sections that need to be offlined prior to physical removal
of a specific node.

Symlink creation during boot was tested on 2-node x86_64, 2-node
ppc64, and 2-node ia64 systems. Symlink creation during physical
memory hot-add tested on a 2-node x86_64 system.

Signed-off-by: Gary Hade <garyhade@us.ibm.com>
Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

show more ...

Merge commit 'v2.6.28-rc2' into x86/pci-ioapic-boot-irq-quirks

Merge branch 'linus' into stackprotector

Conflicts:
arch/x86/kernel/Makefile
include/asm-x86/pda.h

Merge commit 'v2.6.27-rc8' into x86/setup

Merge commit 'v2.6.27-rc8' into genirq

Merge commit 'v2.6.27-rc7' into x86/debug

Merge branch 'linus' into x86/doc

Merge branch 'linus' into x86/gart

Merge branch 'x86/core' into x86/apic

Merge commit 'v2.6.27-rc3' into x86/prototypes

Conflicts:

include/asm-x86/dma-mapping.h

Signed-off-by: Ingo Molnar <mingo@elte.hu>

Merge branch 'linus' into core/rcu

Merge commit 'v2.6.27-rc1' into for-linus

Merge http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm into for-rmk

Merge branch 'linus' into timers/hpet

Merge branch 'x86/core' into x86/xsave

Merge branch 'master' of /home/cbou/linux-2.6

Conflicts:

drivers/power/Kconfig
drivers/power/Makefile

Merge branch 'linus' into core/generic-dma-coherent

Conflicts:

arch/x86/Kconfig

Signed-off-by: Ingo Molnar <mingo@elte.hu>

Merge branch 'linus' into x86/cpu

Conflicts:

arch/x86/kernel/cpu/intel_cacheinfo.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

Merge ../linux-2.6

Merge commit 'upstream/master'

Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6

Merge branch 'linus' into x86/xen

Merge branch 'linus' into x86/cleanups