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linux/Documentation
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Paul E. McKenney 2c01531f08 rcu: Document failing tick as cause of RCU CPU stall warning 
One of lclaudio's systems was seeing RCU CPU stall warnings from idle.
These turned out to be caused by a bug that stopped scheduling-clock
tick interrupts from being sent to a given CPU for several hundred seconds.
This commit therefore updates the documentation to call this out as a
possible cause for RCU CPU stall warnings.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2011-12-11 10:31:26 -08:00
..
ABI
block: Revert "[SCSI] genhd: add a new attribute "alias" in gendisk"
2011-11-10 09:03:55 +01:00
accounting
Documentation: update cgroupfs mount point
2011-06-15 21:52:50 -07:00
acpi
ACPI, APEI, EINJ Param support is disabled by default
2011-08-03 11:15:59 -04:00
aoe
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
arm
Merge branch 'next/deletion' of git+ssh://master.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc
2011-07-25 12:43:28 -07:00
auxdisplay
includecheck fix: Documentation, cfag12864b-example.c
2009-09-24 07:20:57 -07:00
blackfin
doc: fix broken references
2011-09-27 18:08:04 +02:00
block
Documentation: drop as block elevator reference in switching-sched.txt
2011-11-04 12:01:48 -07:00
blockdev
cciss: auto engage SCSI mid layer at driver load time
2011-11-16 09:21:49 +01:00
cdrom
doc: fix broken references
2011-09-27 18:08:04 +02:00
cgroups
Documentation: Fix typo in freezer-subsystem.txt
2011-11-07 23:02:25 +01:00
connector
Documentation/: it's -> its where appropriate
2010-04-23 02:09:52 +02:00
console
doc: fix console doc typo
2010-02-24 13:51:32 +01:00
cpu-freq
Fix documentation and comment typo 'no_hz'
2011-08-08 18:55:59 +02:00
cpuidle
cpuidle: Add Documentation
2008-02-14 00:16:13 -05:00
cris
fix random typos
2008-10-16 11:21:30 -07:00
crypto
async_tx: add support for asynchronous RAID6 recovery operations
2009-08-29 19:09:27 -07:00
development-process
doc: fix broken references
2011-09-27 18:08:04 +02:00
device-mapper
dm log userspace: fix comment hyphens
2011-10-31 20:21:22 +00:00
devicetree
of: Add Silicon Image vendor prefix
2011-11-29 08:24:20 -06:00
DocBook
Merge branch 'driver-core-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
2011-11-21 20:36:26 -08:00
driver-model
docs/driver-model: Update device class docs
2011-08-24 16:01:24 -07:00
dvb
[media] update az6027 firmware URL
2011-10-14 10:29:45 -03:00
early-userspace
Documentation: Remove last references to BitKeeper.
2008-04-21 22:19:05 +00:00
fault-injection
fault-injection: update documentation with the mmc module param
2011-10-26 16:32:13 -04:00
fb
udlfb: Enable fbcon access to framebuffer by default
2011-08-24 10:12:38 +00:00
filesystems
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
2011-12-01 08:28:53 -08:00
firmware_class
firmware: Update hotplug script
2010-08-05 13:53:34 -07:00
frv
doc: fix broken references
2011-09-27 18:08:04 +02:00
hid
HID: Move hiddev.txt to the new Documentation/hid directory
2011-03-22 11:43:51 +01:00
hwmon
hwmon: (w83627ehf) Add support for the W83627UHG
2011-11-04 12:00:48 +01:00
i2c
i2c: Fix device name for 10-bit slave address
2011-11-23 11:33:07 +01:00
i2o
doc: i2o: fix typo 'Settting'
2011-06-07 16:06:01 +02:00
ia64
Fix common misspellings
2011-03-31 11:26:23 -03:00
ide
ide: preserve Host Protected Area by default (v2)
2009-06-07 13:52:52 +02:00
infiniband
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
input
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2011-10-27 08:44:20 +02:00
ioctl
ioctl: register LTTng ioctl
2011-09-12 11:50:56 -07:00
isdn
doc: fix wrong arch/i386 references
2011-06-13 13:43:05 +02:00
ja_JP
Merge branch 'driver-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
2011-07-25 23:06:24 -07:00
kbuild
doc: fix wrong arch/i386 references
2011-06-13 13:43:05 +02:00
kdump
kdump: update kexec-tools URL and Vivek's email
2010-11-25 14:36:38 +01:00
ko_KR
Docs/Kconfig: Update: osdl.org -> linuxfoundation.org
2010-11-15 23:50:13 +01:00
laptops
Documentation: thinkpad-acpi grammo fixes
2011-11-04 12:01:47 -07:00
leds
Documentation: fix leds-class.txt duplicated word
2011-11-04 12:01:48 -07:00
m68k
Documentation: add pointer to name_to_dev_t for root= values
2011-08-03 14:25:21 -10:00
make
kbuild: introduce HDR_ARCH_LIST for headers_install_all
2010-12-14 22:16:19 +01:00
mips
Fix common misspellings
2011-03-31 11:26:23 -03:00
misc-devices
Fix common misspellings
2011-03-31 11:26:23 -03:00
mmc
mmc: documentation of mmc non-blocking request usage and design.
2011-07-21 10:34:52 -04:00
mn10300
trivial: Miscellaneous documentation typo fixes
2009-06-12 18:01:47 +02:00
mtd
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
namespaces
The namespaces compatibility list doc
2007-11-29 09:24:53 -08:00
netlabel
Documentation/: it's -> its where appropriate
2010-04-23 02:09:52 +02:00
networking
ipv4:correct description for tcp_max_syn_backlog
2011-12-06 13:02:28 -05:00
nfc
NFC: Driver for NXP Semiconductors PN544 NFC chip.
2011-01-13 08:03:19 -08:00
parisc
…
PCI
doc: fix broken references
2011-09-27 18:08:04 +02:00
pcmcia
pcmcia: use autoconfiguration feature for ioports and iomem
2010-09-29 17:20:24 +02:00
power
PM / Sleep: Update documentation related to system wakeup
2011-11-28 22:14:45 +01:00
powerpc
Fix common misspellings
2011-03-31 11:26:23 -03:00
pps
pps: add parallel port PPS signal generator
2011-01-13 08:03:21 -08:00
prctl
generic, x86: add tests for prctl PR_GET_TSC and PR_SET_TSC
2008-04-19 19:19:55 +02:00
pti
Kernel documentation for the PTI feature.
2011-05-13 16:31:00 -07:00
ptp
ptp: Added a brand new class driver for ptp clocks.
2011-05-23 13:01:00 -07:00
rapidio
RapidIO: documentation update
2011-11-02 16:07:02 -07:00
RCU
rcu: Document failing tick as cause of RCU CPU stall warning
2011-12-11 10:31:26 -08:00
s390
[S390] remove tape block docu
2011-07-24 10:48:22 +02:00
scheduler
sched: Add documentation for bandwidth control
2011-08-14 12:03:58 +02:00
scsi
Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
2011-10-28 16:44:18 -07:00
security
doc: fix broken references
2011-09-27 18:08:04 +02:00
serial
RS485: fix inconsistencies in the meaning of some variables
2011-11-15 12:13:44 -08:00
sh
sh: clkfwk: Kill off unused clk_set_rate_ex().
2010-11-15 18:25:12 +09:00
sound
Merge branch 'fix/asoc' into for-linus
2011-12-06 13:22:28 +01:00
sparc
sparc: Remove Documentation/sparc/sbus_drivers.txt
2008-08-29 02:15:25 -07:00
spi
doc: fix broken references
2011-09-27 18:08:04 +02:00
sysctl
kernel/sysctl.c: add cap_last_cap to /proc/sys/kernel
2011-10-31 17:30:53 -07:00
target
[SCSI] tcm_mod_builder.py: Fix generated *_drop_nodeacl() handler
2011-03-23 11:36:45 -05:00
telephony
Fix common misspellings
2011-03-31 11:26:23 -03:00
thermal
thermal: Add event notification to thermal framework
2011-01-12 00:08:35 -05:00
timers
doc: fix broken references
2011-09-27 18:08:04 +02:00
trace
mm: change isolate mode from #define to bitwise type
2011-10-31 17:30:44 -07:00
usb
USB: linux-cdc-acm.inf: add support for the acm_ms gadget
2011-11-29 09:59:29 +09:00
vDSO
Document the vDSO and add a reference parser
2011-07-14 17:57:09 -07:00
video4linux
[media] gspca - zc3xx: New webcam 03f0:1b07 HP Premium Starter Cam
2011-09-23 23:31:12 -03:00
virtual
Merge branch 'for-linus' of git://github.com/richardweinberger/linux
2011-11-02 09:45:39 -07:00
vm
Merge branches 'slab/next' and 'slub/partial' into slab/for-linus
2011-10-26 18:09:12 +03:00
w1
Fix common misspellings
2011-03-31 11:26:23 -03:00
watchdog
Documentation: watchdog: add guide how to convert drivers to new framework
2011-11-05 21:25:16 +01:00
wimax
i2400m: documentation and instructions for usage
2009-01-07 10:00:18 -08:00
x86
x86-64, doc: Remove int 0xcc from entry_64.S documentation
2011-08-16 08:04:08 -07:00
zh_CN
remove the messy code file Documentation/zh_CN/SubmitChecklist
2011-09-26 16:18:41 -07:00
.gitignore
add random binaries to .gitignore
2010-04-08 11:34:34 +02:00
00-INDEX
Documentation: add Ramoops usage description
2011-08-13 18:34:03 -07:00
applying-patches.txt
…
atomic_ops.txt
Documentation/atomic_ops.txt: avoid volatile in sample code
2011-05-26 17:12:34 -07:00
bad_memory.txt
Document handling of bad memory
2008-12-03 16:09:53 -07:00
basic_profiling.txt
…
binfmt_misc.txt
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
braille-console.txt
trivial: Miscellaneous documentation typo fixes
2009-06-12 18:01:47 +02:00
bt8xxgpio.txt
gpio: add bt8xxgpio driver
2008-07-25 10:53:30 -07:00
btmrvl.txt
Bluetooth: Add documentation for Marvell Bluetooth driver
2009-08-22 14:25:32 -07:00
BUG-HUNTING
Documentation: add hint about call traces & module symbols to BUG-HUNTING
2008-02-06 10:41:09 -08:00
bus-virt-phys-mapping.txt
doc: fix broken references
2011-09-27 18:08:04 +02:00
cachetlb.txt
mm: convert mm->cpu_vm_cpumask into cpumask_var_t
2011-05-25 08:39:21 -07:00
Changes
Documentation/Changes: remove some really obsolete text
2011-07-11 16:48:38 -07:00
circular-buffers.txt
Document Linux's circular buffering capabilities
2010-03-24 16:31:22 -07:00
coccinelle.txt
scripts/coccinelle: update for compatability with Coccinelle 0.2.4
2010-12-03 12:27:01 +01:00
CodingStyle
Documentation: update CodingStyle use of braces
2011-11-04 12:01:47 -07:00
cpu-hotplug.txt
Fix common misspellings
2011-03-31 11:26:23 -03:00
cpu-load.txt
[PATCH] Documentation: CPU load calculation description
2007-03-01 14:53:39 -08:00
cputopology.txt
topology/sysfs: Provide book id and siblings attributes
2010-09-09 20:41:25 +02:00
dcdbas.txt
…
debugging-modules.txt
Documentation: Clarify when module debugging actually works.
2008-02-03 15:27:38 +02:00
debugging-via-ohci1394.txt
ieee1394: update URLs in debugging-via-ohci1394.txt
2009-10-03 09:28:11 +02:00
dell_rbu.txt
Fix common misspellings
2011-03-31 11:26:23 -03:00
devices.txt
Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
2010-10-28 09:35:11 -07:00
DMA-API-HOWTO.txt
Documentation/DMA-API-HOWTO.txt: fix misleading example
2011-07-26 16:49:45 -07:00
DMA-API.txt
include/linux/dma-mapping.h: add dma_zalloc_coherent()
2011-11-02 16:07:02 -07:00
DMA-attributes.txt
powerpc/cell: Add DMA_ATTR_WEAK_ORDERING dma attribute and use in Cell IOMMU code
2008-07-22 10:39:36 +10:00
DMA-ISA-LPC.txt
…
dmaengine.txt
Improve slave/cyclic DMA engine documentation
2011-07-27 20:33:48 +05:30
dontdiff
Documentation: update dontdiff file
2011-05-23 15:14:11 -07:00
dynamic-debug-howto.txt
Merge branch 'docs-next' of git://git.lwn.net/linux-2.6
2011-03-27 19:46:59 -07:00
edac.txt
Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6
2011-04-07 11:14:49 -07:00
eisa.txt
Fix common misspellings
2011-03-31 11:26:23 -03:00
email-clients.txt
Documentation: email-clients: Add better Thunderbird information
2011-08-13 18:34:03 -07:00
feature-removal-schedule.txt
sysctl: make CONFIG_SYSCTL_SYSCALL default to n
2011-11-02 16:07:02 -07:00
flexible-arrays.txt
flex_array: flex_array_prealloc takes a number of elements, not an end
2011-04-28 16:12:47 -04:00
futex-requeue-pi.txt
futex: add requeue-pi documentation
2009-05-09 07:12:50 +02:00
gcov.txt
trivial: fix typo in CONFIG_DEBUG_FS in gcov doc
2009-09-21 15:14:56 +02:00
gpio.txt
Revert "gpiolib: annotate gpio-intialization with __must_check"
2011-01-13 17:26:46 -08:00
highuid.txt
[SPARC]: Remove SunOS and Solaris binary support.
2008-04-21 15:10:15 -07:00
HOWTO
Documentation: update LXR web link
2011-05-23 15:14:11 -07:00
hw_random.txt
hw_random doc updates
2008-03-24 19:22:19 -07:00
hwspinlock.txt
hwspinlock/core: register a bank of hwspinlocks in a single API call
2011-09-21 19:45:34 +03:00
init.txt
init/main.c: improve usability in case of init binary failure
2010-03-06 11:26:29 -08:00
initrd.txt
use the newc archive format as requested by initramfs
2008-02-03 14:54:41 +02:00
intel_txt.txt
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
Intel-IOMMU.txt
intel-iommu: Kill DMAR_BROKEN_GFX_WA option.
2009-09-19 09:37:23 -07:00
io_ordering.txt
…
io-mapping.txt
io mapping: improve documentation
2008-11-03 18:21:44 +01:00
iostats.txt
Documentation/iostats.txt: bit-size reference etc.
2011-03-23 20:44:18 +01:00
IPMI.txt
IPMI: Add the document description of ipmi_get_smi_info
2010-12-14 00:22:00 -05:00
IRQ-affinity.txt
bitmap, irq: add smp_affinity_list interface to /proc/irq
2011-05-25 08:39:45 -07:00
IRQ.txt
…
irqflags-tracing.txt
Fix common misspellings
2011-03-31 11:26:23 -03:00
isapnp.txt
…
java.txt
Documentation/java.txt: typo and grammar fixes
2007-10-20 02:37:21 +02:00
kernel-doc-nano-HOWTO.txt
docbook: warn on unused doc entries
2010-09-11 16:49:21 -07:00
kernel-docs.txt
doc: fix broken references
2011-09-27 18:08:04 +02:00
kernel-parameters.txt
Merge branch 'iommu/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
2011-12-09 08:08:14 -08:00
kmemcheck.txt
kmemcheck: update documentation
2009-07-01 22:36:22 +02:00
kmemleak.txt
Documentation: update kmemleak supported archs
2011-06-15 21:52:50 -07:00
kobject.txt
kobject: documentation: Update to refer to kset-example.c.
2010-03-19 07:12:20 -07:00
kprobes.txt
tree-wide: fix comment/printk typos
2010-11-01 15:38:34 -04:00
kref.txt
kref: Fix typo in kref documentation
2011-03-07 13:20:05 -08:00
ldm.txt
Documentation: update broken web addresses.
2010-08-04 15:21:40 +02:00
local_ops.txt
trivial: Miscellaneous documentation typo fixes
2009-06-12 18:01:47 +02:00
lockdep-design.txt
lockdep: Update documentation for lock-class leak detection
2011-12-11 10:31:23 -08:00
lockstat.txt
Documentation: Add statistics about nested locks
2011-05-28 17:03:29 +02:00
logo.gif
Revert "linux.conf.au 2009: Tuz"
2009-04-27 12:00:27 -07:00
logo.txt
Revert "linux.conf.au 2009: Tuz"
2009-04-27 12:00:27 -07:00
magic-number.txt
doc: fix wrong arch/i386 references
2011-06-13 13:43:05 +02:00
Makefile
[media] Remove the old V4L1 v4lgrab.c file
2010-12-29 08:17:12 -02:00
ManagementStyle
docs: fix ManagementStyle book name
2008-10-30 11:38:46 -07:00
mca.txt
doc: fix wrong arch/i386 references
2011-06-13 13:43:05 +02:00
md.txt
md: update documentation for md/rdev/state sysfs interface
2011-07-28 11:31:48 +10:00
media-framework.txt
doc: fix broken references
2011-09-27 18:08:04 +02:00
memory-barriers.txt
doc: fix broken references
2011-09-27 18:08:04 +02:00
memory-hotplug.txt
memory hotplug: Allow memory blocks to span multiple memory sections
2011-02-03 16:08:57 -08:00
memory.txt
Documentation/memory.txt: remove some very outdated recommendations
2009-09-22 07:17:26 -07:00
mono.txt
…
mutex-design.txt
mutex: Fix annotations to include it in kernel-locking docbook
2010-09-03 08:19:51 +02:00
nmi_watchdog.txt
x86, nmi-watchdog: update procfs nmi_watchdog file documentation v2
2008-10-30 19:07:04 +01:00
nommu-mmap.txt
nommu: fix malloc performance by adding uninitialized flag
2009-12-15 08:53:24 -08:00
numastat.txt
mm: fix NUMA accounting in numastat.txt
2009-09-22 07:17:39 -07:00
oops-tracing.txt
module,bug: Add TAINT_OOT_MODULE flag for modules not built in-tree
2011-11-07 07:54:42 +10:30
padata.txt
Documentation/padata.txt: fix typos etc.
2010-08-11 08:59:18 -07:00
parport-lowlevel.txt
plip: fix parport_register_device name parameter
2007-11-26 19:39:01 -08:00
parport.txt
…
pi-futex.txt
…
pinctrl.txt
drivers: create a pin control subsystem
2011-10-13 12:49:17 +02:00
pnp.txt
doc: capitalization and other minor fixes in pnp doc
2010-02-05 12:22:44 +01:00
preempt-locking.txt
…
printk-formats.txt
Documentation: update printk-formats.txt
2011-06-15 21:52:50 -07:00
prio_tree.txt
…
ramoops.txt
Documentation: add Ramoops usage description
2011-08-13 18:34:03 -07:00
rbtree.txt
Documentation: Update augmented rbtree documentation
2011-07-24 10:03:05 -07:00
rfkill.txt
doc: fix broken references
2011-09-27 18:08:04 +02:00
robust-futex-ABI.txt
futex: documentation: fix inconsistent description of futex list_op_pending
2009-06-18 13:03:56 -07:00
robust-futexes.txt
…
rt-mutex-design.txt
variable name fix to Documentation/rt-mutex-design.txt
2010-06-05 17:39:09 +02:00
rt-mutex.txt
…
rtc.txt
RTC: Fix up rtc.txt documentation to reflect changes to generic rtc layer
2011-03-09 11:25:10 -08:00
SAK.txt
Remove Andrew Morton's old email accounts
2008-10-16 11:21:32 -07:00
SecurityBugs
Fix common misspellings
2011-03-31 11:26:23 -03:00
serial-console.txt
…
sgi-ioc4.txt
…
sgi-visws.txt
…
SM501.txt
trivial: Miscellaneous documentation typo fixes
2009-06-12 18:01:47 +02:00
sparse.txt
update email address
2010-07-19 10:56:54 +02:00
spinlocks.txt
Documentation/spinlocks.txt: Remove reference to sti()/cli()
2011-07-11 12:45:04 -07:00
stable_api_nonsense.txt
doc: stable_api_nonsense.txt: fix paragraph to make more sense.
2011-03-30 12:02:05 +02:00
stable_kernel_rules.txt
Update email address for stable patch submission
2011-10-18 13:58:59 -07:00
SubmitChecklist
Documentation/SubmitChecklist: add RCU debug config options
2011-07-25 20:57:17 -07:00
SubmittingDrivers
Documentation: SubmittingDrivers: fix Linus's git tree URL
2011-08-13 18:34:03 -07:00
SubmittingPatches
Documentation: fix spelling error in SubmittingPatches
2011-08-13 18:34:02 -07:00
svga.txt
…
sysfs-rules.txt
Fix typos in comments
2010-03-16 11:47:56 +01:00
sysrq.txt
documentation: update sysrq.txt magic sysrq keys
2010-10-26 17:32:41 -07:00
unaligned-memory-access.txt
introduce HAVE_EFFICIENT_UNALIGNED_ACCESS Kconfig symbol
2008-07-25 10:53:27 -07:00
unicode.txt
…
unshare.txt
…
VGA-softcursor.txt
…
vgaarbiter.txt
Documentation: fix vgaarbiter.txt typos etc.
2011-05-23 15:14:11 -07:00
video-output.txt
…
volatile-considered-harmful.txt
Documentation/volatile-considered-harmful.txt: correct cpu_relax() documentation
2010-03-24 16:31:20 -07:00
workqueue.txt
workqueue: Document debugging tricks
2011-03-31 13:40:42 +02:00
xz.txt
decompressors: add XZ decompressor module
2011-01-13 08:03:24 -08:00
zorro.txt
…