Describe NUMA node symlink created for CPUs when CONFIG_NUMA is set.

Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Document cpuidle sysfs attributes by reading code, Documentation/cpuidle/,
and git logs.

Cc: Venki Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Document sched_[mc|smt]_power_savings by reading existing code and
git logs.

Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Add brief descriptions for the following sysfs files:

	/sys/devices/system/cpu/cpu#/topology/core_id
	/sys/devices/system/cpu/cpu#/topology/core_siblings
	/sys/devices/system/cpu/cpu#/topology/core_siblings_list
	/sys/devices/system/cpu/cpu#/topology/physical_package_id
	/sys/devices/system/cpu/cpu#/topology/thread_siblings
	/sys/devices/system/cpu/cpu#/topology/thread_siblings_list

The descriptions in Documentation/cputopology.txt weren't very
informative, so I attempted a better description based on code
reading and hopeful guessing.

Updated Documentation/cputopology.txt with the better descriptions and
fixed some style issues.

Cc: Mike Travis <travis@sgi.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Add brief descriptions for the following sysfs files:

	/sys/devices/system/cpu/kernel_max
	/sys/devices/system/cpu/offline
	/sys/devices/system/cpu/online
	/sys/devices/system/cpu/possible
	/sys/devices/system/cpu/present

Excerpted the relevant information from Documentation/cputopology.txt
and pointed back to cputopology.txt as the authoritative source of
information.

Cc: Mike Travis <travis@sgi.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

This interface has been around for a long time, but hasn't been
officially documented.

Document the top level sysfs directory for CPU attributes.
Signed-off-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Rename sysfs-devices-cache_disable to sysfs-devices-system-cpu, in
order to keep a stricter correlation between a sysfs directory and
its documentation.
Reported-by: David Rientjes <rientjes@google.com>
Signed-off-by: Alex Chiang <achiang@hp.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

Platform drivers registered via platform_driver_probe() can be bound
to devices only once, upon registration, because discard their probe()
routines to save memory. Unbinding the driver through sysfs 'unbind'
leaves the device stranded and confuses users so let's not create
bind and unbind attributes for such drivers.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Cc: Éric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

In this patch:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=16dc42e018c2868211b4928f20a957c0c216126c
the check was added for another driver to already claim the same device
on the same bus. But the returned error code was wrong: to modprobe, the
-EEXIST means that _this_ driver is already installed. It therefore
doesn't produce the needed error message when _another_ driver is trying
to register for the same device.  Returning -EBUSY fixes the problem.
Signed-off-by: Stas Sergeev <stsp@aknet.ru>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

* 'bugfix' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen:
  xen: set up mmu_ops before trying to set any ptes

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6:
  ide: Serialize CMD643 and CMD646 to fix a hardware bug with SSD

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (43 commits)
  net: Fix 'Re: PACKET_TX_RING: packet size is too long'
  netdev: usb: dm9601.c can drive a device not supported yet, add support for it
  qlge: Fix firmware mailbox command timeout.
  qlge: Fix EEH handling.
  AF_RAW: Augment raw_send_hdrinc to expand skb to fit iphdr->ihl (v2)
  bonding: fix a race condition in calls to slave MII ioctls
  virtio-net: fix data corruption with OOM
  sfc: Set ip_summed correctly for page buffers passed to GRO
  cnic: Fix L2CTX_STATUSB_NUM offset in context memory.
  MAINTAINERS: rt2x00 list is moderated
  airo: Reorder tests, check bounds before element
  mac80211: fix for incorrect sequence number on hostapd injected frames
  libertas spi: fix sparse errors
  mac80211: trivial: fix spelling in mesh_hwmp
  cfg80211: sme: deauthenticate on assoc failure
  mac80211: keep auth state when assoc fails
  mac80211: fix ibss joining
  b43: add 'struct b43_wl' missing declaration
  b43: Fix Bugzilla #14181 and the bug from the previous 'fix'
  rt2x00: Fix crypto in TX frame for rt2800usb
  ...

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
  sched: move rq_weight data array out of .percpu
  percpu: allow pcpu_alloc() to be called with IRQs off

* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-param-fixes:
  param: fix setting arrays of bool
  param: fix NULL comparison on oom
  param: fix lots of bugs with writing charp params from sysfs, by leaking mem.

* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  virtio: order used ring after used index read
  virtio-pci: fix per-vq MSI-X request logic

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  backing-dev: ensure that a removed bdi no longer has super_block referencing it
  block: use after free bug in __blkdev_get
  block: silently error unsupported empty barriers too

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  Revert "PCI: get larger bridge ranges when space is available"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  mlx4_core: Add a new supported 40 GigE device ID

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] zfcp: Flush SCSI registration work when adding unit
  [SCSI] zfcp: Fix timer initialization for ct and els requests
  [SCSI] zfcp: Warn about storage devices with broken PLOGI data
  [SCSI] zfcp: Handle WWPN mismatch in PLOGI payload
  [SCSI] zfcp: fix kfree handling in zfcp_init_device_setup
  [SCSI] fix memory leak in initialization

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/kms: fix kms/fbdev colormap support properly.
  drm: Add the basic check for the detailed timing in EDID
  drm/radeon/kms: ignore vga arbiter return.

* 'sh/for-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: Fix hugetlbfs dependencies for SH-3 && MMU configurations.
  sh: Document uImage.bin target in archhelp.
  sh: add uImage.bin target
  sh: rsk7203 CONFIG_MTD=n fix
  sh: Check for return_to_handler when unwinding the stack
  sh: Build fix: define more __movmem* symbols
  sh: __irq_entry annotate do_IRQ().

Fix up sh/powerpc conflicts in fs/Kconfig

* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  NFSv4: The link() operation should return any delegation on the file
  NFSv4: Fix two unbalanced put_rpccred() issues.
  NFSv4: Fix a bug when the server returns NFS4ERR_RESOURCE
  nfs: Panic when commit fails

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  [CIFS] Fixing to avoid invalid kfree() in cifs_get_tcp_session()

I've not touched the other stuff here but the word "locking" comes to mind.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: Alan Cox <alan@linux.intel.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/ppc64: Use preempt_schedule_irq instead of preempt_schedule
  powerpc: Minor cleanup to lib/Kconfig.debug
  powerpc: Minor cleanup to sound/ppc/Kconfig
  powerpc: Minor cleanup to init/Kconfig
  powerpc: Limit memory hotplug support to PPC64 Book-3S machines
  powerpc: Limit hugetlbfs support to PPC64 Book-3S machines
  powerpc: Fix compile errors found by new ppc64e_defconfig
  powerpc: Add a Book-3E 64-bit defconfig
  powerpc/booke: Fix xmon single step on PowerPC Book-E
  powerpc: Align vDSO base address
  powerpc: Fix segment mapping in vdso32
  powerpc/iseries: Remove compiler version dependent hack
  powerpc/perf_events: Fix priority of MSR HV vs PR bits
  powerpc/5200: Update defconfigs
  drivers/serial/mpc52xx_uart.c: Use UPIO_MEM rather than SERIAL_IO_MEM
  powerpc/boot/dts: drop obsolete 'fsl5200-clocking'
  of: Remove nested function
  mpc5200: support for the MAN mpc5200 based board mucmc52
  mpc5200: support for the MAN mpc5200 based board uc101

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6:
  mfd: Do not dereference null pointer in twl4030 error path
  mfd: Always initialise WM831x IRQ mutex

* 'hwpoison-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-mce-2.6:
  HWPOISON: fix invalid page count in printk output
  HWPOISON: Allow schedule_on_each_cpu() from keventd
  HWPOISON: fix/proc/meminfo alignment
  HWPOISON: fix oops on ksm pages
  HWPOISON: Fix page count leak in hwpoison late kill in do_swap_page
  HWPOISON: return early on non-LRU pages
  HWPOISON: Add brief hwpoison description to Documentation
  HWPOISON: Clean up PR_MCE_KILL interface

* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  xfs: fix double IRELE in xfs_dqrele_inode

Merge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6

* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
  omap4: Fix UART4 platform data on omap4
  omap4: Allow omap_serial_early_init() for OMAP4430 board
  omap3: PM: enable UART3 module wakeups
  omap2: Fix console serial port number for n8x0
  omap2: Fix detection of n8x0
  omap1: Fix DSP public peripherals support for ams-delta
  omap1: Fix redundant UARTs pin muxing that can break other hardware support
  omap: iommu: fix wrong condition check for SUPERSECTION
  omap: SDMA: Fix omap_stop_dma() API for channel linking
  omap: Fix omap-keypad by restoring old keypad.h without breaking omap2 boards that use matrix_keypad

* 'for-linus' of git://git.infradead.org/ubi-2.6:
  UBI: fix check on unsigned long
  UBI: fix backward compatibility

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  hwmon: (it87) Fix VID reading on IT8718F/IT8720F
  hwmon: (dme1737) No vid attributes for SCH311x
  hwmon: (fschmd) Fix check on unsigned in watchdog_write()
  hwmon: (coretemp) Maintainer update

* 'urgent-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6:
  pcmcia: do not load the pd6729 driver if io_base is NULL
  pcmcia: Fix possible printk format warnings
  pcmcia: do not try to store more than 4 version strings
  pcmcia: pccard_read_tuple and TUPLE_RETURN_COMMON cleanup
  pcmcia: properly close previous dev_printk if kzalloc fails in do_io_probe
  pcmcia: fix controller printk format warnings

* master.kernel.org:/home/rmk/linux-2.6-arm: (22 commits)
  ARM: Fix lubbock defconfig build
  ARM: 5769/1: CPU_ARM920T: remove dead Maverick EP9312 URL
  ARM: 5768/1: ep93xx: remove dead code in ep93xx_gpio_ab_irq_handler()
  ARM: 5767/1: ep93xx: remove ep93xx_init_time() prototype
  ARM: 5765/1: Updated U300 defconfig
  ARM: 5766/1: Fix watchdog enabling for AT91SAM9G45
  ARM: 5764/1: bcmring: add oprofile pmu support
  [ARM] pxa/spitz: add gpio button support (fixes regression)
  [ARM] pxa/cm-x300: fix mmc numbering
  ARM: 5763/1: ARM: SMP: Fix the BUG with CONFIG_PREEMPT enabled
  ARM: 5760/1: ep93xx: fix build error in edb93xx.c
  ARM: 5759/1: Add register information of threads to coredump
  ARM: 5757/1: Thumb-2: Correct "mov.w pc, lr" instruction which is unpredictable
  MXC: fix reset for mx31, mx35 and mx27 SoCs
  fix pcm037_eet compilation with the new SPI driver
  fix compilation of i.MX31 platforms
  pcm970 mmc: Fix ro switch
  pcm038: Add SPI/MC13783 support
  mx25: Add missing copyright / license header
  mx25pdk: remove nand support as it is not present in current tree
  ...

Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  futex: Move drop_futex_key_refs out of spinlock'ed region
  rcu: Fix TREE_PREEMPT_RCU CPU_HOTPLUG bad-luck hang
  rcu: Stopgap fix for synchronize_rcu_expedited() for TREE_PREEMPT_RCU
  rcu: Prevent RCU IPI storms in presence of high call_rcu() load
  futex: Check for NULL keys in match_futex
  futex: Handle spurious wake up

Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf timechart: Improve the visual appearance of scheduler delays
  perf timechart: Fix the wakeup-arrows that point to non-visible processes
  perf top: Fix --delay_secs 0 division by zero
  perf tools: Bump version to 0.0.2
  perf_event: Adjust frequency and unthrottle for non-group-leader events

Merge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Do less agressive buddy clearing
  sched: Disable SD_PREFER_LOCAL for MC/CPU domains

Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, UV: Set DELIVERY_MODE=4 for vector=NMI_VECTOR in uv_hub_send_ipi()
  x86, UV: Fix and clean up bau code to use uv_gpa_to_pnode()
  x86: Don't print number of MCE banks for every CPU
  x86, UV: Fix information in __uv_hub_info structure
  x86: Document linker script ASSERT() quirk

syscallno is unsigned
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

There are some places where we do like:

	pte = pte_map();
	do {
		(do break in some conditions)
	} while (pte++, ...);
	pte_unmap(pte - 1);

But if the loop breaks at the first loop, pte_unmap() unmaps invalid pte.

This patch is a fix for this problem.
Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Reviewd-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>