On some architectures, the boot process involves de-registering the boot
console (early boot), initialize drivers and then re-register the console.

This mechanism introduces a window in which no printk can happen on the
console and messages are buffered and then printed once the new console is
available.

If a kernel crashes during this window, all it's left on the boot console
is "console [foo] enabled, bootconsole disabled" making debug of the crash
rather 'interesting'.

By adding "keep_bootcon" option, do not unregister the boot console, that
will allow to printk everything that is happening up to the crash.

The option is clearly meant only for debugging purposes as it introduces
lots of duplicated info printed on console, but will make bug report from
users easier as it doesn't require a kernel build just to figure out where
we crash.
Signed-off-by: NFabio M. Di Nitto <fabbione@fabbione.net>
Acked-by: NDavid S. Miller <davem@davemloft.net>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Greg KH <gregkh@suse.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

When a cpu is considered stuck, instead of limping along and just printing
a warning, it is sometimes preferred to just panic, let kdump capture the
vmcore and reboot.  This gets the machine back into a stable state quickly
while saving the info that got it into a stuck state to begin with.

Add a Kconfig option to allow users to set the hardlockup to panic
by default.  Also add in a 'nmi_watchdog=nopanic' to override this.

[akpm@linux-foundation.org: fix strncmp length]
Signed-off-by: NDon Zickus <dzickus@redhat.com>
Acked-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
Reviewed-by: NWANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The oops=panic cmdline option is not x86 specific, move it to generic code.
Update documentation.
Signed-off-by: NOlaf Hering <olaf@aepfle.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This is a configurable gadget.  can be configured by configfs interface.
Any IP available at PCIE bus can be programmed to be used by host
controller.It supoorts both INTX and MSI.

By default, the gadget is configured for INTX and SYSRAM1 is mapped to
BAR0 with size 0x1000
Signed-off-by: NPratyush Anand <pratyush.anand@st.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Viresh Kumar <viresh.kumar@st.com>
Cc: Shiraz Hashim <shiraz.hashim@st.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

There may be multiple ways of controlling the backlight on a given
machine.  Allow drivers to expose the type of interface they are
providing, making it possible for userspace to make appropriate policy
decisions.
Signed-off-by: NMatthew Garrett <mjg@redhat.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: David Airlie <airlied@linux.ie>
Cc: Alex Deucher <alexdeucher@gmail.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NSage Weil <sage@newdream.net>

/sys/fs is a somewhat strange way to tweak what could more
obviously be tuned with a mount option.
Suggested-by: NChristoph Hellwig <hch@infradead.org>
Signed-off-by: NTony Luck <tony.luck@intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Configuration for ads1015 gain and datarate is possible via
devicetree or platform data.

This is a followup patch to previous ads1015 patches on Jean Delvares
tree.
Signed-off-by: NDirk Eibach <eibach@gdsys.de>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Signed-off-by: NDirk Eibach <eibach@gdsys.de>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

SMSC SCH5627 Super I/O chips include complete hardware monitoring
capabilities. They can monitor up to 5 voltages, 4 fans and 8
temperatures.

The hardware monitoring part of the SMSC SCH5627 is accessed by talking
through an embedded microcontroller. An application note describing the
protocol for communicating with the microcontroller is available upon
request. Please mail me if you want a copy.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Add support for detection of the National Semiconductor LM75A using the ID
register value.
Signed-off-by: NLen Sorensen <lsorense@csclub.uwaterloo.ca>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

The lis3lv02d drivers aren't hardware monitoring drivers, so the don't
belong to drivers/hwmon. Move them to drivers/misc, short of a better
home.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Acked-by: NEric Piel <eric.piel@tremplin-utc.net>
Acked-by: NJonathan Cameron <jic23@cam.ac.uk>
Tested-by: NEric Piel <eric.piel@tremplin-utc.net>
Tested-by: NTakashi Iwai <tiwai@suse.de>

The hp_accel driver isn't a hardware monitoring driver, so it doesn't
belong to drivers/hwmon. Move it to drivers/platform/x86, assuming HP
doesn't ship non-x86 laptops.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Acked-by: NEric Piel <eric.piel@tremplin-utc.net>
Acked-by: NJonathan Cameron <jic23@cam.ac.uk>
Tested-by: NEric Piel <eric.piel@tremplin-utc.net>
Tested-by: NTakashi Iwai <tiwai@suse.de>

Apparently users are interested in this information, so let's provide
it.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NGuenter Roeck <guenter.roeck@ericsson.com>

This binding documents several properties that have been in use for quite
some time, and adds one new property 'pic-no-reset', which controls the
runtime initialization behavior of the PIC.  More specifically, the presence
of 'pic-no-reset' mandates that the PIC shall not be reset during runtime
initialization and that any initialization related to interrupt sources
shall be limited to sources explicitly referenced in the device tree.  This
functionality is useful in AMP systems where multiple OSes are sharing the
PIC and the reinitialization of the PIC can interfere with OSes that are
already up and running.

The interrupt specifier definition is based off of Stuart Yoder's FSL MPIC
binding.
Signed-off-by: NMeador Inge <meador_inge@mentor.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Stuart Yoder <stuart.yoder@freescale.com>
Cc: Hollis Blanchard <hollis_blanchard@mentor.com>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

Add the SMBus Controller DeviceIDs for the Intel DH89xxCC PCH.
Signed-off-by: NSeth Heasley <seth.heasley@intel.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

There is no user left of i2c_adapter.id, so we can get rid of it.
Finally! :)
Signed-off-by: NJean Delvare <khali@linux-fr.org>

The last legitimate user of i2c_driver.attach_adapter and
.detach_adapter is gone, so we can finally deprecate these callbacks.
The last few drivers which still use these will have to be updated to
make use of standard I2C device instantiation ways instead.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

The last remaining ID in <linux/i2c-id.h> is no longer used anywhere,
so we can finally get rid of it.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

* Typical legacy drivers implemented method .detach_client, not
  .detach_adapter.
* Drop all references to __devexit, as i2c drivers shouldn't use it.

Cc: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

The struct i2c_board_info member holding the name is "type", not
"name".
Signed-off-by: NRoman Fietze <roman.fietze@telemotive.de>
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: stable@kernel.org

it's always false...
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

Fix 'upto' misspelling and align parameters.
Signed-off-by: NLucas De Marchi <lucas.demarchi@profusion.mobi>
Cc: trivial@kernel.org
LKML-Reference: <1300389856-1099-2-git-send-email-lucas.demarchi@profusion.mobi>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

The goal of this document shall be
- overview of all locks used in KVM core
- provide details on the scope of each lock
- explain the lock type, specifically of a raw spin locks
- provide a lock ordering guide
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>

commit 68377659 ("mm: remove CONFIG_UNEVICTABLE_LRU config option")
has removed the configoption so we should sync up the doc as well.
Signed-off-by: NMichal Hocko <mhocko@suse.cz>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Update cpufreq governor documentation for sampling_down_factor tunable
parameter.
Signed-off-by: NVishwanath BS <vishwanath.bs@ti.com>
Signed-off-by: NDave Jones <davej@redhat.com>

This is an ex-parrot.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

The cgroup documentation does not specify how a process can be removed
from a particular group.  This patch adds a note at the end of the
simple example about how this is done.  Also, some cgroups (like
cpusets) require user input before a new group can be used.  This is
noted in the patch as well.
Signed-off-by: NEric B Munson <emunson@mgebm.net>
Acked-by: NPaul Menage <menage@google.com>
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Since file handles are freed, a little amendment to the documentation
Signed-off-by: NFederica Teodori <federica.teodori@googlemail.com>
Acked-by: Rik van Riel<riel@redhat.com>
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

pr_info() and pr_debug() are in linux/printk.h, not linux/kernel.h.
Last updated is unnecessary, we have git for that.
Signed-off-by: NRoland Kammerer <dev.rck@gmail.com>
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Acked-by: NHarry Wei <harryxiyou@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The device tree infrastructure is being genericized so its documentation
moved out of the PowerPC directory.
Signed-off-by: NRob Landley <rlandley@parallels.com>
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Time interpolators were removed in git 1f564ad6 ("[IA64] remove
time interpolator"), and Voyager support went away in git b6b6e2b1
("Documentation: remove obsolete voyager.txt file")
Signed-off-by: NRob Landley <rlandley@parallels.com>
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Followup patch will add ipv6 support.

ipt_addrtype.h is retained for compatibility reasons, but no longer used
by the kernel.
Signed-off-by: NFlorian Westphal <fwestphal@astaro.com>
Signed-off-by: NPatrick McHardy <kaber@trash.net>

Adds binding documentation for cache sram for the PQ3 and some QorIQ
based platforms.
Signed-off-by: NVivek Mahajan <vivek.mahajan@freescale.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

Define the binding for compatible = "fsl,mpic", including the definition
of 4-cell interrupt specifiers.  The 3rd and 4th cells are needed to
define additional types of interrupt source outside the "normal" external
and internal interrupts in FSL SoCs.  Define error interrupt, IPIs, and
PIC timer sources.
Signed-off-by: NStuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

Now handles multiple ranges, doesn't make assumptions about interrupt
specifier format, and doesn't claim interrupts that don't correspond to an
available range.

Also has some better error checking.

The device tree binding is updated to clarify some existing assumptions.
Signed-off-by: NScott Wood <scottwood@freescale.com>
Signed-off-by: NKumar Gala <galak@kernel.crashing.org>

Enhanced area feature is a new feature defined in eMMC4.4 standard. This
user data area provides higher performance/reliability, at the expense
of using twice the effective media space due to the area using SLC.

The MMC driver now reads out the enhanced area offset and size and adds
them to the device attributes in sysfs. Enabling the enhanced area can
only be done once, and should be done in manufacturing. To use this
feature, bit ERASE_GRP_DEF should also be set.

Documentation/ABI/testing/sysfs-devices-mmc describes the two new
attributes.
Signed-off-by: NChuanxiao Dong <chuanxiao.dong@intel.com>
Reviewed-by: NChris Ball <cjb@laptop.org>
Signed-off-by: NChris Ball <cjb@laptop.org>

Note that these 2 are register compatible and report the same superio id,
but they are 2 distinct chips / models!
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Tested-by: NThomas Faber <thfabba@gmx.de>
Tested-by: NAlexey Sychev <owl@umail.ru>
Tested-by: NDieter Bloms <dieter@bloms.de>
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>

Note that this patch also makes 2 changes to the code paths for the f71889fg
to keep the code unified between the 2 (for simplicities sake). Both of these
are harmless for then f71889fg:

1) The first change is to always set the FAN_PROG_SEL bit to 0. This influences
   accesses to some banked fan / pwm registers. On the f71889fg no registers
   which we use are banked. On the f71889ed however some more fan registers
   have been banked including one which we use, by making the FAN_PROG_SEL bit
   0, address 0x96 will point to the right register.
2) The second change is to see a FANx_TEMP_SEL value of 0 as pointing to
   a PECI / AMDSI value, and thus disable our pwm related sysfs attr.
   This is correct for the f71889ed and on the f71889fg 0 is a reserved
   value, so we should never see it and if we do, disabling the pwm related
   sysfs attr is a sane thing to do.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Tested-by: NThomas Greve <tg42@gmx.net>
Tested-by: NSander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>

This patch adds support for NCT6775F and NCT6776F to the w83627ehf driver.
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Tested-by: Ian Dobson <i.dobson@planet-ian.com> (NCT6776F)
Tested-by: Zachary Marzec <zmarzec@gmail.com> (ASUS P8P67 PRO/NCT6776F)
Acked-by: NIan Dobson <i.dobson@planet-ian.com>