linux/Documentation
Hugh Dickins 49920d2878 mm: make transparent hugepage size public
Test programs want to know the size of a transparent hugepage.  While it
is commonly the same as the size of a hugetlbfs page (shown as
Hugepagesize in /proc/meminfo), that is not always so: powerpc
implements transparent hugepages in a different way from hugetlbfs
pages, so it's coincidence when their sizes are the same; and x86 and
others can support more than one hugetlbfs page size.

Add /sys/kernel/mm/transparent_hugepage/hpage_pmd_size to show the THP
size in bytes - it's the same for Anonymous and Shmem hugepages.  Call
it hpage_pmd_size (after HPAGE_PMD_SIZE) rather than hpage_size, in case
some transparent support for pud and pgd pages is added later.

Link: http://lkml.kernel.org/r/alpine.LSU.2.11.1612052200290.13021@eggly.anvils
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Greg Thelen <gthelen@google.com>
Cc: David Rientjes <rientjes@google.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-12-12 18:55:09 -08:00
..
80211 docs-rst: sphinxify 802.11 documentation 2016-10-11 16:19:17 -06:00
ABI platform-drivers-x86 for 4.9-3 2016-11-11 16:48:49 -08:00
accounting tools: move accounting tool from Documentation 2016-09-23 13:07:15 -06:00
acpi Merge branches 'acpi-button', 'acpi-battery' and 'acpi-doc' 2016-10-02 01:40:20 +02:00
aoe
arm linux-kselftest-4.9-rc1-update 2016-10-14 15:17:12 -07:00
arm64 arm64 updates for 4.9: 2016-10-03 08:58:35 -07:00
auxdisplay samples: move auxdisplay example code from Documentation 2016-09-23 11:52:32 -06:00
backlight
blackfin samples: move blackfin gptimers-example from Documentation 2016-10-10 07:12:02 -06:00
block block: remove remnant refs to hardsect 2016-09-14 08:44:57 -06:00
blockdev zram: cosmetic: cleanup documentation 2016-07-26 16:19:19 -07:00
bus-devices
cdrom
cgroup-v1 Three fixes for the docs build, including removing an annoying warning on 2016-08-07 10:23:17 -04:00
cma
connector samples: connector: from Documentation to samples directory 2016-04-28 07:47:35 -06:00
console
cpu-freq cpufreq-stats: Minor documentation fix 2016-09-08 23:05:07 +02:00
cpuidle
cris
crypto crypto: doc - Fix typo 2016-05-31 16:41:55 +08:00
dev-tools mm: kmemleak: avoid using __va() on addresses that don't have a lowmem mapping 2016-10-11 15:06:33 -07:00
development-process docs-rst: add inter-document cross references 2016-09-21 15:43:09 -06:00
device-mapper dm raid: fix activation of existing raid4/10 devices 2016-10-17 16:41:31 -04:00
devicetree dt: add documentation of "hotpluggable" memory property 2016-12-12 18:55:07 -08:00
dmaengine dmaengine: documentation to the new callback mechanism 2016-08-08 08:11:42 +05:30
DocBook A single commit converting the mac80211 DocBook template over to Sphinx. 2016-10-14 14:11:22 -07:00
driver-api docs: Don't format internal MPT docs 2016-09-06 09:15:48 -06:00
driver-model devres: add devm_alloc_percpu() 2016-11-15 22:34:25 -05:00
early-userspace
EDID
extcon
fault-injection
fb Documentation: fb: fix spelling mistakes 2016-05-10 12:05:27 +03:00
features Documentation: MIPS supports HAVE_REGS_AND_STACK_ACCESS_API 2016-10-13 17:19:19 +02:00
filesystems fs: remove the never implemented aio_fsync file operation 2016-10-30 13:09:42 -04:00
firmware_class Documentation: fix common spelling mistakes 2016-04-28 07:51:59 -06:00
fmc
fpga
frv
gpio gpio/board.txt: point to gpiod_set_value 2016-10-20 14:14:11 +02:00
gpu Merge tag 'drm-for-v4.9' of git://people.freedesktop.org/~airlied/linux 2016-10-11 18:12:22 -07:00
hid Documentation: HID: Intel ISH HID document 2016-08-17 11:13:07 +02:00
hwmon hwmon: (max6650) Allow fan shutdown and initial rpm target 2016-09-08 21:34:17 -07:00
i2c i2c: Documentation: i2c-topology: fix minor whitespace nit 2016-11-10 21:18:56 +01:00
ia64 selftests: move ia64 tests from Documentation/ia64 2016-09-20 09:58:12 -06:00
ide
iio iio: Documentation: Correct the path used to create triggers. 2016-10-01 00:49:58 -06:00
infiniband IB/hfi1: Document new sysfs entries for hfi1 driver 2016-10-02 08:42:19 -04:00
input Input: ALPS - add V8 protocol documentation 2016-10-04 11:47:02 -07:00
ioctl doc: ioctl: Add some clarifications to botching-up-ioctls 2016-09-06 06:00:22 -06:00
isdn
ja_JP Documentatio: HOWTO: remove regression postings info from translations 2016-04-16 10:49:08 -06:00
kbuild Merge branch 'kbuild' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2016-10-14 14:26:58 -07:00
kdump Documentation: kdump: Add description of enable multi-cpus support 2016-09-20 18:02:54 -06:00
ko_KR locking/Documentation: Add Korean translation 2016-08-12 08:24:14 +02:00
laptops tools: move laptops dslm tool from Documentation 2016-09-23 13:07:21 -06:00
leds Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds 2016-10-04 10:25:53 -07:00
livepatch Documentation: livepatch: add section about arch-specific code 2016-08-18 23:41:56 +02:00
locking locking/lglock: Remove lglock implementation 2016-09-22 15:25:56 +02:00
m68k
media Linux 4.8 2016-10-05 16:43:53 -03:00
memory-devices
metag
mic samples: move mic/mpssd example code from Documentation 2016-09-20 12:38:48 -06:00
mips
misc-devices samples: move misc-devices/mei example code from Documentation 2016-09-23 11:51:43 -06:00
mmc mmc: core: Extend sysfs with DSR register 2016-07-25 10:34:51 +02:00
mn10300
mtd
namespaces
netlabel
networking net: l2tp: deprecate PPPOL2TP_MSG_* in favour of L2TP_MSG_* 2016-12-10 23:29:11 -05:00
nfc
nios2
nvdimm libnvdimm, btt: update the usage section in Documentation 2016-06-17 16:23:23 -07:00
nvmem
parisc
PCI PCI changes for the v4.9 merge window: 2016-10-07 11:46:37 -07:00
pcmcia tools: move pcmcia crc32hash tool from Documentation 2016-09-23 13:07:27 -06:00
perf perf: xgene: Add APM X-Gene SoC Performance Monitoring Unit driver 2016-09-15 11:20:55 -07:00
phy
platform
power power supply and reset changes for the v4.9 series 2016-10-06 18:21:15 -07:00
powerpc powerpc updates for 4.9 2016-10-07 20:19:31 -07:00
pps Documentation: pps: fix spelling mistake 2016-04-28 07:23:59 -06:00
prctl selftests: move prctl tests from Documentation/prctl 2016-09-20 09:09:09 -06:00
pti
ptp selftests: move ptp tests from Documentation/ptp 2016-09-20 09:54:38 -06:00
rapidio rapidio/documentation/mport_cdev: add missing parameter description 2016-09-01 17:52:02 -07:00
RCU Documentation/RCU: Fix minor typo 2016-11-14 10:39:48 -08:00
s390 s390/Documentation: improve sort command for trace buffer 2016-06-13 15:58:23 +02:00
scheduler sched/deadline: Document behavior of sched_yield() 2016-09-10 11:17:41 +02:00
scsi scsi: g_NCR5380: Stop using scsi_module.c 2016-09-29 21:52:43 -04:00
security Some big changes this month, headlined by the addition of a new formatted 2016-07-26 13:05:11 -07:00
serial Documentation: rs485: Do not define manually the ioctl 2016-08-18 11:08:33 -06:00
sh
sound ASoC: Updates for v4.8 2016-07-26 10:35:31 +02:00
sphinx Merge tag 'docs-next' of git://git.lwn.net/linux.git into patchwork 2016-09-19 16:36:41 -03:00
sphinx-static This is the documentation update pull for the 4.9 merge window. 2016-10-04 13:54:07 -07:00
spi Doc: update 00-INDEX files to reflect the runnable code move 2016-10-10 07:12:09 -06:00
sysctl mnt: Add a per mount namespace limit on the number of mounts 2016-09-30 12:46:48 -05:00
target target: make close_session optional 2016-05-10 01:19:26 -07:00
thermal thermal: Add support for hardware-tracked trip points 2016-09-27 14:02:16 +08:00
timers Doc: update 00-INDEX files to reflect the runnable code move 2016-10-10 07:12:09 -06:00
tpm tpm: Add documentation for the tpm_vtpm_proxy device driver 2016-06-25 17:26:35 +03:00
trace This release cycle is rather small. Just a few fixes to tracing. 2016-10-06 11:48:41 -07:00
usb Documentation: tiny typo fix in usb/gadget_multi.txt 2016-06-23 08:09:10 -06:00
virtual Documentation/virtual/kvm: Support the vCPU preemption check 2016-11-22 12:48:09 +01:00
vm mm: make transparent hugepage size public 2016-12-12 18:55:09 -08:00
w1 w1: add ability to set (SRAM) and store (EEPROM) configuration for temp sensors like DS18B20 2016-05-01 14:37:49 -07:00
watchdog linux-kselftest-4.9-rc1-update 2016-10-14 15:17:12 -07:00
wimax
x86 Merge branch 'mm-pkeys-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2016-10-10 11:01:51 -07:00
xtensa xtensa: cleanup MMU setup and kernel layout macros 2016-07-24 06:33:58 +03:00
zh_CN docs: deprecate kernel-doc-nano-HOWTO.txt 2016-07-20 16:45:37 -06:00
.gitignore Add .pyc files to .gitignore 2016-06-30 13:07:33 -06:00
00-INDEX Doc: update 00-INDEX files to reflect the runnable code move 2016-10-10 07:12:09 -06:00
adding-syscalls.txt documentation: trivial typo: adding-syscalls.txt: s/statat/fstatat/ 2016-04-18 11:31:49 -06:00
applying-patches.txt docs: Clean up bare :: lines 2016-09-20 18:46:36 -06:00
assoc_array.txt
atomic_ops.txt
bad_memory.txt
basic_profiling.txt
bcache.txt bcache: documentation formatting, edited for clarity, stripe alignment notes 2016-06-23 07:58:38 -06:00
binfmt_misc.txt binfmt_misc: add F option description to documentation 2016-03-30 14:12:22 -07:00
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
BUG-HUNTING
bus-virt-phys-mapping.txt
cachetlb.txt
cgroup-v2.txt
Changes docs: Clean up bare :: lines 2016-09-20 18:46:36 -06:00
circular-buffers.txt
clk.txt Documentation: clk: update file names containing referenced structures 2016-08-14 12:12:36 -06:00
CodeOfConflict URL changed for Linux Foundation TAB 2016-10-01 00:57:13 -06:00
CodingStyle docs: Remove space-before-label guidance from CodingStyle 2016-09-21 15:53:31 -06:00
conf.py media updates for v4.9-rc1 2016-10-11 13:22:22 -07:00
cpu-hotplug.txt
cpu-load.txt
cputopology.txt topology/sysfs: provide drawer id and siblings attributes 2016-06-13 15:58:27 +02:00
crc32.txt
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt
devices.txt Documentation: update the devices.txt documentation 2016-03-29 10:11:44 -07:00
digsig.txt
DMA-API-HOWTO.txt Documentation: DMA-API-HOWTO: Fix a typo 2016-09-20 17:58:46 -06:00
DMA-API.txt dma-mapping: add dma_{map,unmap}_resource 2016-09-26 22:16:41 +05:30
DMA-attributes.txt dma-mapping: introduce the DMA_ATTR_NO_WARN attribute 2016-10-11 15:06:32 -07:00
dma-buf-sharing.txt
DMA-ISA-LPC.txt
docutils.conf doc-rst: add docutils config file 2016-08-14 11:52:40 -06:00
dontdiff GCC plugin infrastructure 2016-06-07 22:57:10 +02:00
dynamic-debug-howto.txt
edac.txt
efi-stub.txt
eisa.txt
email-clients.txt Documentation/email-clients.txt: convert it to ReST markup 2016-09-21 15:41:50 -06:00
flexible-arrays.txt
futex-requeue-pi.txt
gcc-plugins.txt GCC plugin infrastructure 2016-06-07 22:57:10 +02:00
highuid.txt
HOWTO docs: Clean up bare :: lines 2016-09-20 18:46:36 -06:00
hw_random.txt
hwspinlock.txt
index.rst docs-rst: sphinxify 802.11 documentation 2016-10-11 16:19:17 -06:00
init.txt
initrd.txt
intel_txt.txt
Intel-IOMMU.txt
io_ordering.txt
io-mapping.txt
iostats.txt
IPMI.txt
IRQ-affinity.txt
IRQ-domain.txt Documentation/IRQ-domain.txt: Document irq_domain_create_{linear, tree} 2016-03-31 00:32:59 -06:00
IRQ.txt
irqflags-tracing.txt
isa.txt Documentation: Add ISA bus driver documentation 2016-05-02 09:32:04 -07:00
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt docs: deprecate kernel-doc-nano-HOWTO.txt 2016-07-20 16:45:37 -06:00
kernel-docs.txt Documentation/kernel-docs.txt: reorder based on timestamp 2016-09-20 18:54:42 -06:00
kernel-documentation.rst This is the documentation update pull for the 4.9 merge window. 2016-10-04 13:54:07 -07:00
kernel-parameters.txt mm: remove x86-only restriction of movable_node 2016-12-12 18:55:07 -08:00
kernel-per-CPU-kthreads.txt Documenation: update cgroup's document path 2016-08-03 15:43:58 -06:00
kobject.txt
kprobes.txt Documentation: kprobes: Document jprobes stack copying limitations 2016-08-15 10:19:11 -06:00
kref.txt
kselftest.txt kselftest: kselftest documentation improvement 2016-09-20 08:58:27 -06:00
ldm.txt
local_ops.txt
lockup-watchdogs.txt
logo.gif
logo.txt
lzo.txt Documentation: lzo: fix spelling mistakes 2016-04-28 07:23:11 -06:00
magic-number.txt
mailbox.txt
Makefile samples: move blackfin gptimers-example from Documentation 2016-10-10 07:12:02 -06:00
Makefile.sphinx doc-rst: generic way to build PDF of sub-folders 2016-09-01 08:49:23 -06:00
ManagementStyle Documentation/HOWTO: add cross-references to other documents 2016-09-20 18:41:04 -06:00
md-cluster.txt md-cluster: change array_sectors and update size are not supported 2016-05-04 12:39:35 -07:00
md.txt Documentation: fix wrong value in md.txt 2016-06-23 08:08:36 -06:00
memory-barriers.txt locking/Documentation: Fix a typo of example result 2016-08-12 08:24:13 +02:00
memory-hotplug.txt memory_hotplug: introduce CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE 2016-05-19 19:12:14 -07:00
men-chameleon-bus.txt
module-signing.txt Documentation/module-signing.txt: Note need for version info if reusing a key 2016-07-27 12:38:00 +09:30
mono.txt
nommu-mmap.txt
ntb.txt
numastat.txt
oops-tracing.txt
padata.txt
parport-lowlevel.txt
parport.txt
percpu-rw-semaphore.txt
phy.txt phy: core: Allow children node to be overridden 2016-04-29 16:39:39 +02:00
pi-futex.txt
pinctrl.txt pinctrl: Flag strict is a field in struct pinmux_ops 2016-06-23 10:50:10 +02:00
pnp.txt
preempt-locking.txt
printk-formats.txt
pwm.txt pwm: Update documentation 2016-05-17 14:48:04 +02:00
ramoops.txt ramoops: use DT reserved-memory bindings 2016-08-05 11:21:36 -07:00
rbtree.txt
remoteproc.txt remoteproc: Split driver and consumer dereferencing 2016-10-02 22:50:21 -07:00
rfkill.txt
robust-futex-ABI.txt
robust-futexes.txt Documentation: robust-futexes: fix spelling mistakes 2016-04-28 07:26:41 -06:00
rpmsg.txt rpmsg: use module_rpmsg_driver in existing drivers and examples 2016-05-06 11:09:01 -07:00
rtc.txt
SAK.txt
SecurityBugs Documentation/HOWTO: add cross-references to other documents 2016-09-20 18:41:04 -06:00
serial-console.txt
sgi-ioc4.txt
SM501.txt
smsc_ece1099.txt
stable_api_nonsense.txt Documentation/HOWTO: add cross-references to other documents 2016-09-20 18:41:04 -06:00
stable_kernel_rules.txt docs-rst: add inter-document cross references 2016-09-21 15:43:09 -06:00
static-keys.txt jump_labels: Allow array initialisers 2016-09-07 09:41:11 +01:00
SubmitChecklist docs-rst: add inter-document cross references 2016-09-21 15:43:09 -06:00
SubmittingDrivers docs-rst: add inter-document cross references 2016-09-21 15:43:09 -06:00
SubmittingPatches docs-rst: add inter-document cross references 2016-09-21 15:43:09 -06:00
svga.txt
sync_file.txt Documentation: add doc for sync_file_get_fence() 2016-08-11 15:33:24 +05:30
sysfs-rules.txt
sysrq.txt Doc: correct the location of sysrq.c 2016-04-28 08:02:36 -06:00
this_cpu_ops.txt
unaligned-memory-access.txt
unicode.txt
unshare.txt
vfio.txt
VGA-softcursor.txt
video-output.txt
vme_api.txt vme: Update documentation to match api 2016-08-31 13:20:16 +02:00
volatile-considered-harmful.txt
workqueue.txt workqueue: Fix a typo in workqueue.txt 2016-07-06 02:37:38 -06:00
xillybus.txt Documentation: xillybus: fix spelling mistake 2016-04-28 07:44:54 -06:00
xz.txt
zorro.txt