Tang Chen 01a178a94e acpi, memory-hotplug: support getting hotplug info from SRAT ... We now provide an option for users who don't want to specify physical memory address in kernel commandline. /* * For movablemem_map=acpi: * * SRAT: |_____| |_____| |_________| |_________| ...... * node id: 0 1 1 2 * hotpluggable: n y y n * movablemem_map: |_____| |_________| * * Using movablemem_map, we can prevent memblock from allocating memory * on ZONE_MOVABLE at boot time. */ So user just specify movablemem_map=acpi, and the kernel will use hotpluggable info in SRAT to determine which memory ranges should be set as ZONE_MOVABLE. If all the memory ranges in SRAT is hotpluggable, then no memory can be used by kernel. But before parsing SRAT, memblock has already reserve some memory ranges for other purposes, such as for kernel image, and so on. We cannot prevent kernel from using these memory. So we need to exclude these ranges even if these memory is hotpluggable. Furthermore, there could be several memory ranges in the single node which the kernel resides in. We may skip one range that have memory reserved by memblock, but if the rest of memory is too small, then the kernel will fail to boot. So, make the whole node which the kernel resides in un-hotpluggable. Then the kernel has enough memory to use. NOTE: Using this way will cause NUMA performance down because the whole node will be set as ZONE_MOVABLE, and kernel cannot use memory on it. If users don't want to lose NUMA performance, just don't use it. [akpm@linux-foundation.org: fix warning] [akpm@linux-foundation.org: use strcmp()] Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Jiang Liu <jiang.liu@huawei.com> Cc: Jianguo Wu <wujianguo@huawei.com> Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Cc: Wu Jianguo <wujianguo@huawei.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Len Brown <lenb@kernel.org> Cc: "Brown, Len" <len.brown@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2013-02-23 17:50:14 -08:00
..
ABI	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid	2013-02-21 17:41:38 -08:00
accounting	doc: Remove unnecessary declarations from Documentation/accounting/getdelays.c	2012-11-26 14:22:21 +01:00
acpi	ACPI / Documentation: refer to correct file for acpi_platform_device_ids[] table	2013-02-13 13:43:02 +01:00
aoe	aoe: allow user to disable target failure timeout	2012-12-17 17:15:25 -08:00
arm	fbdev changes for 3.8:	2012-12-15 13:03:48 -08:00
arm64	arm64: Add simple earlyprintk support	2013-01-22 17:51:01 +00:00
auxdisplay
backlight	backlight: lp855x_bl: support new LP8557 device	2013-02-21 17:22:25 -08:00
blackfin
block	block: Kill bi_destructor	2012-09-09 10:35:39 +02:00
blockdev
bus-devices	ARM: OMAP2+: gpmc: generic timing calculation	2012-11-09 18:07:11 +05:30
cdrom
cgroups	cgroups: move cgroup_event_listener.c to tools/cgroup	2013-01-07 09:41:28 -08:00
connector	connector: Move cn_test.c away from NLMSG_PUT().	2012-06-26 21:19:02 -07:00
console
cpu-freq	cpufreq: Update Documentation for cpus and related_cpus	2013-02-02 00:01:16 +01:00
cpuidle	Honor state disabling in the cpuidle ladder governor	2012-09-04 01:35:44 +02:00
cris
crypto	KEYS: Document asymmetric key type	2012-10-08 13:50:12 +10:30
development-process
device-mapper	DM-RAID: Fix RAID10's check for sufficient redundancy	2013-01-24 12:02:36 +11:00
devicetree	Merge branch 'akpm' (incoming from Andrew)	2013-02-21 17:38:49 -08:00
DocBook	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2013-02-21 17:40:58 -08:00
driver-model	lib: devres: Introduce devm_ioremap_resource()	2013-01-22 09:41:43 -08:00
dvb	get_dvb_firmware: fix download site for tda10046 firmware	2012-09-28 16:16:00 -03:00
early-userspace
EDID
extcon
fault-injection	doc: fix quite a few typos within Documentation	2012-11-19 14:28:24 +01:00
fb
filesystems	f2fs: update f2fs document to reflect SIT/NAT layout correctly	2013-01-04 09:42:59 +09:00
firmware_class	firmware loader: document firmware cache mechanism	2012-11-14 15:07:18 -08:00
frv
hid	HID: remove x bit from sensor doc	2012-12-14 08:48:59 +01:00
hwmon	hwmon: (jc42) Add support for MCP98244	2013-02-06 09:58:07 -08:00
i2c	Documentation: remove __dev* attributes.	2013-01-03 15:57:16 -08:00
i2o
ia64	doc: aliasing-test: close fd on write error	2012-09-01 09:57:10 -07:00
ide
infiniband	IB/ipoib: Add rtnl_link_ops support	2012-09-20 16:49:17 -04:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid	2012-12-13 12:00:48 -08:00
ioctl	wanrouter: completely decouple obsolete code from kernel.	2013-01-31 19:20:33 -05:00
isdn
ja_JP
kbuild	kbuild: create a rule to run the pre-processor on *.dts files	2013-02-08 14:38:07 +00:00
kdump	kexec: update URL of kexec homepage	2012-07-18 18:35:57 -07:00
ko_KR
laptops	Documentation/laptops: remove depends on CONFIG_EXPERIMENTAL	2013-01-21 14:52:42 -08:00
leds	leds-lp5523: add channel name in the platform data	2012-09-11 18:32:41 +08:00
m68k
make
memory-devices
mips
misc-devices	doc: fix quite a few typos within Documentation	2012-11-19 14:28:24 +01:00
mmc	mmc: core: Extend sysfs to ext_csd parameters for RPMB support	2012-12-06 13:54:48 -05:00
mn10300
mtd
namespaces
netlabel
networking	tcp: remove Appropriate Byte Count support	2013-02-05 14:51:16 -05:00
nfc	NFC: Update pn544 documentation	2013-01-10 01:27:46 +01:00
parisc
PCI	PCI/MSI: Enable multiple MSIs with pci_enable_msi_block_auto()	2013-01-24 17:25:13 +01:00
pcmcia
power	suspend: enable freeze timeout configuration through sys	2013-02-09 22:32:48 +01:00
powerpc	powerpc/hw-breakpoint: Use generic hw-breakpoint interfaces for new PPC ptrace flags	2012-11-15 13:00:23 +11:00
pps
prctl	seccomp: Make syscall skipping and nr changes more consistent	2012-10-02 21:14:29 +10:00
pti
ptp
rapidio
RCU	Merge branches 'urgent.2012.10.27a', 'doc.2012.11.16a', 'fixes.2012.11.13a', 'srcu.2012.10.27a', 'stall.2012.11.13a', 'tracing.2012.11.08a' and 'idle.2012.10.24a' into HEAD	2012-11-16 09:59:58 -08:00
s390
scheduler	sched: Remove __ARCH_WANT_INTERRUPTS_ON_CTXSW	2012-09-13 16:52:04 +02:00
scsi	[SCSI] hptiop: Support HighPoint RR4520/RR4522 HBA	2012-11-27 08:59:43 +04:00
security	Documentation: fix Documentation/security/00-INDEX	2012-12-17 17:15:22 -08:00
serial	tty: Update serial core API documentation	2013-01-15 21:57:44 -08:00
sh
sound	ALSA: compress: add support for gapless playback	2013-02-14 12:30:22 +01:00
spi	Documentation: remove __dev* attributes.	2013-01-03 15:57:16 -08:00
sysctl	Documentation/sysctl/kernel.txt: document /proc/sys/shmall	2013-01-04 16:11:46 -08:00
target	target: Simplify fabric sense data length handling	2012-09-17 17:12:58 -07:00
thermal	Thermal: Add documentation for platform layer data	2012-11-05 14:00:09 +08:00
timers
trace	ACPI and power management updates for 3.9-rc1	2013-02-20 11:26:56 -08:00
usb	USB: report submission of active URBs	2012-11-11 18:10:46 -08:00
vDSO
video4linux	Documentation: remove __dev* attributes.	2013-01-03 15:57:16 -08:00
virtual	ARM: KVM: VGIC accept vcpu and dist base addresses from user space	2013-02-11 18:59:01 +00:00
vm	Merge branch 'akpm' (Andrew's patch-bomb)	2012-12-13 13:11:15 -08:00
w1	w1: w1_therm: Add force-pullup option for "broken" sensors	2013-02-18 13:55:24 -08:00
watchdog	watchdog: fix watchdog-test.c build warning	2012-08-29 17:12:58 +02:00
wimax
x86	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2013-02-21 18:06:55 -08:00
xtensa	xtensa: initialize atomctl SR	2012-12-18 21:10:22 -08:00
zh_CN	Driver core patches for 3.9-rc1	2013-02-21 12:05:51 -08:00
.gitignore
00-INDEX	Documentation: update top level 00-INDEX file with new additions	2013-02-18 10:38:54 +01:00
applying-patches.txt
atomic_ops.txt	Documentation: Memory barrier semantics of atomic_xchg()	2013-01-08 14:14:55 -08:00
bad_memory.txt
basic_profiling.txt
binfmt_misc.txt
braille-console.txt
bt8xxgpio.txt
btmrvl.txt
BUG-HUNTING
bus-virt-phys-mapping.txt
cachetlb.txt
Changes
circular-buffers.txt
clk.txt
coccinelle.txt
CodingStyle	Documentation: remove depends on CONFIG_EXPERIMENTAL	2013-01-11 11:38:03 -08:00
cpu-hotplug.txt	doc: Add x86 CPU0 online/offline feature	2012-11-14 09:39:44 -08:00
cpu-load.txt
cputopology.txt
crc32.txt
dcdbas.txt
debugging-modules.txt
debugging-via-ohci1394.txt
dell_rbu.txt
devices.txt	firmware: remove last vestiges of dabusb	2012-11-21 13:03:01 -08:00
digsig.txt
DMA-API-HOWTO.txt	Documentation DMA-API-HOWTO.txt Add dma mapping error check usage examples	2012-10-24 17:07:43 +02:00
DMA-API.txt	dma-debug: New interfaces to debug dma mapping errors	2012-10-24 17:06:43 +02:00
DMA-attributes.txt	common: DMA-mapping: add DMA_ATTR_FORCE_CONTIGUOUS attribute	2012-11-29 03:30:34 -08:00
dma-buf-sharing.txt	doc: fix quite a few typos within Documentation	2012-11-19 14:28:24 +01:00
DMA-ISA-LPC.txt
dmaengine.txt
dontdiff	x86: remove offsets.h from .gitignore and dontdiff	2012-11-19 14:10:53 +01:00
dynamic-debug-howto.txt	dynamic_debug: dynamic hex dump	2013-01-17 12:19:09 -08:00
edac.txt	Merge branch 'devel'	2012-07-29 21:11:05 -03:00
eisa.txt	MCA: delete all remaining traces of microchannel bus support.	2012-05-17 19:06:13 -04:00
email-clients.txt
flexible-arrays.txt
futex-requeue-pi.txt
gcov.txt
gpio.txt	gpiolib: provide provision to register pin ranges	2012-11-11 19:06:00 +01:00
highuid.txt
HOWTO	HOWTO: fix double words typo	2012-12-10 15:54:27 +01:00
hw_random.txt
hwspinlock.txt
init.txt
initrd.txt	Documentation/initrd.txt: Change the location of util-linux	2012-05-25 16:18:34 +02:00
intel_txt.txt	Documentation: remove depends on CONFIG_EXPERIMENTAL	2013-01-11 11:38:03 -08:00
Intel-IOMMU.txt
io_ordering.txt
io-mapping.txt
iostats.txt
IPMI.txt	IPMI: Remove SMBus driver info from the docs	2012-10-16 18:07:12 -07:00
IRQ-affinity.txt
IRQ-domain.txt	irqdomain: update documentation	2012-12-05 23:52:10 +00:00
IRQ.txt
irqflags-tracing.txt
isapnp.txt
java.txt
kernel-doc-nano-HOWTO.txt	Kernel-doc: Convention: Use a "Return" section to describe return values	2012-11-27 21:08:57 +01:00
kernel-docs.txt
kernel-parameters.txt	acpi, memory-hotplug: support getting hotplug info from SRAT	2013-02-23 17:50:14 -08:00
kmemcheck.txt
kmemleak.txt
kobject.txt	Documentation: Fix "struct kobj_type" to include newer members.	2012-09-04 16:06:34 -07:00
kprobes.txt
kref.txt	kref: Add kref_get_unless_zero documentation	2012-11-28 18:36:06 +10:00
ldm.txt
local_ops.txt
lockdep-design.txt
lockstat.txt
lockup-watchdogs.txt
logo.gif
logo.txt
magic-number.txt	wanrouter: completely decouple obsolete code from kernel.	2013-01-31 19:20:33 -05:00
Makefile
ManagementStyle	Documentation: ManagementStyle: fixed typo	2012-06-28 12:03:15 +02:00
md.txt
media-framework.txt	[media] media: Add link_validate() op to check links to the sink pad	2012-05-14 08:44:11 -03:00
memory-barriers.txt	Documentation: Memory barrier semantics of atomic_xchg()	2013-01-08 14:14:55 -08:00
memory-hotplug.txt	hotplug: update nodemasks management	2012-12-12 17:38:33 -08:00
mono.txt
mutex-design.txt
nommu-mmap.txt
numastat.txt
oops-tracing.txt
padata.txt
parport-lowlevel.txt
parport.txt
percpu-rw-semaphore.txt	percpu-rw-semaphore: fix documentation typos	2012-09-26 19:56:15 +02:00
pi-futex.txt
pinctrl.txt	drivers/pinctrl: grab default handles from device core	2013-01-23 16:39:51 +01:00
pnp.txt
preempt-locking.txt
printk-formats.txt	lib/vsprintf.c: add %pa format specifier for phys_addr_t types	2013-02-21 17:22:20 -08:00
pwm.txt	pwm: add devm_pwm_get() and devm_pwm_put()	2012-09-10 17:05:45 +02:00
ramoops.txt	pstore/ftrace: Convert to its own enable/disable debugfs knob	2012-09-06 22:16:58 -07:00
rbtree.txt	rbtree: move augmented rbtree functionality to rbtree_augmented.h	2012-10-09 16:22:40 +09:00
remoteproc.txt	remoteproc: add rproc_report_crash function to notify rproc crashes	2012-09-18 12:53:22 +03:00
rfkill.txt
robust-futex-ABI.txt
robust-futexes.txt
rpmsg.txt	Documentation: remove __dev* attributes.	2013-01-03 15:57:16 -08:00
rt-mutex-design.txt
rt-mutex.txt
rtc.txt	rtc-proc: permit the /proc/driver/rtc device to use other devices	2012-10-06 03:05:01 +09:00
SAK.txt
SecurityBugs
serial-console.txt
sgi-ioc4.txt
sgi-visws.txt
SM501.txt
smsc_ece1099.txt	mfd: smsc: Add support for smsc gpio io/keypad driver	2012-10-01 15:27:48 +02:00
sparse.txt	Documentation/sparse.txt: document context annotations for lock checking	2012-12-17 17:15:23 -08:00
spinlocks.txt
stable_api_nonsense.txt
stable_kernel_rules.txt	stable: Allow merging of backports for serious user-visible performance issues	2012-06-25 12:11:58 -07:00
static-keys.txt
SubmitChecklist
SubmittingDrivers
SubmittingPatches	Documentation/SubmittingPatches: suggested the use of scripts/get_maintainer.pl	2012-05-25 16:18:30 +02:00
svga.txt
sysfs-rules.txt
sysrq.txt	sparc64: Add global PMU register dumping via sysrq.	2012-10-16 09:34:01 -07:00
unaligned-memory-access.txt
unicode.txt
unshare.txt
vfio.txt	vfio: Trivial Documentation correction	2012-09-21 10:48:03 -06:00
VGA-softcursor.txt
vgaarbiter.txt
video-output.txt
vme_api.txt
volatile-considered-harmful.txt
workqueue.txt	workqueue: reimplement WQ_HIGHPRI using a separate worker_pool	2012-07-13 22:24:45 -07:00
xz.txt
zorro.txt