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
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
2013-02-21 17:41:38 -08:00
doc: Remove unnecessary declarations from Documentation/accounting/getdelays.c
2012-11-26 14:22:21 +01:00
ACPI / Documentation: refer to correct file for acpi_platform_device_ids[] table
2013-02-13 13:43:02 +01:00
aoe: allow user to disable target failure timeout
2012-12-17 17:15:25 -08:00
fbdev changes for 3.8:
2012-12-15 13:03:48 -08:00
arm64: Add simple earlyprintk support
2013-01-22 17:51:01 +00:00
backlight: lp855x_bl: support new LP8557 device
2013-02-21 17:22:25 -08:00
ARM: OMAP2+: gpmc: generic timing calculation
2012-11-09 18:07:11 +05:30
cgroups: move cgroup_event_listener.c to tools/cgroup
2013-01-07 09:41:28 -08:00
cpufreq: Update Documentation for cpus and related_cpus
2013-02-02 00:01:16 +01:00
KEYS: Document asymmetric key type
2012-10-08 13:50:12 +10:30
DM-RAID: Fix RAID10's check for sufficient redundancy
2013-01-24 12:02:36 +11:00
Merge branch 'akpm' (incoming from Andrew)
2013-02-21 17:38:49 -08:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
2013-02-21 17:40:58 -08:00
lib: devres: Introduce devm_ioremap_resource()
2013-01-22 09:41:43 -08:00
get_dvb_firmware: fix download site for tda10046 firmware
2012-09-28 16:16:00 -03:00
doc: fix quite a few typos within Documentation
2012-11-19 14:28:24 +01:00
f2fs: update f2fs document to reflect SIT/NAT layout correctly
2013-01-04 09:42:59 +09:00
firmware loader: document firmware cache mechanism
2012-11-14 15:07:18 -08:00
HID: remove x bit from sensor doc
2012-12-14 08:48:59 +01:00
hwmon: (jc42) Add support for MCP98244
2013-02-06 09:58:07 -08:00
Documentation: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
IB/ipoib: Add rtnl_link_ops support
2012-09-20 16:49:17 -04:00
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
2012-12-13 12:00:48 -08:00
wanrouter: completely decouple obsolete code from kernel.
2013-01-31 19:20:33 -05:00
kbuild: create a rule to run the pre-processor on *.dts files
2013-02-08 14:38:07 +00:00
Documentation/laptops: remove depends on CONFIG_EXPERIMENTAL
2013-01-21 14:52:42 -08:00
doc: fix quite a few typos within Documentation
2012-11-19 14:28:24 +01:00
mmc: core: Extend sysfs to ext_csd parameters for RPMB support
2012-12-06 13:54:48 -05:00
tcp: remove Appropriate Byte Count support
2013-02-05 14:51:16 -05:00
NFC: Update pn544 documentation
2013-01-10 01:27:46 +01:00
PCI/MSI: Enable multiple MSIs with pci_enable_msi_block_auto()
2013-01-24 17:25:13 +01:00
suspend: enable freeze timeout configuration through sys
2013-02-09 22:32:48 +01:00
powerpc/hw-breakpoint: Use generic hw-breakpoint interfaces for new PPC ptrace flags
2012-11-15 13:00:23 +11:00
seccomp: Make syscall skipping and nr changes more consistent
2012-10-02 21:14:29 +10:00
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
[SCSI] hptiop: Support HighPoint RR4520/RR4522 HBA
2012-11-27 08:59:43 +04:00
Documentation: fix Documentation/security/00-INDEX
2012-12-17 17:15:22 -08:00
tty: Update serial core API documentation
2013-01-15 21:57:44 -08:00
ALSA: compress: add support for gapless playback
2013-02-14 12:30:22 +01:00
Documentation: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
Documentation/sysctl/kernel.txt: document /proc/sys/shmall
2013-01-04 16:11:46 -08:00
target: Simplify fabric sense data length handling
2012-09-17 17:12:58 -07:00
Thermal: Add documentation for platform layer data
2012-11-05 14:00:09 +08:00
ACPI and power management updates for 3.9-rc1
2013-02-20 11:26:56 -08:00
USB: report submission of active URBs
2012-11-11 18:10:46 -08:00
Documentation: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
ARM: KVM: VGIC accept vcpu and dist base addresses from user space
2013-02-11 18:59:01 +00:00
Merge branch 'akpm' (Andrew's patch-bomb)
2012-12-13 13:11:15 -08:00
w1: w1_therm: Add force-pullup option for "broken" sensors
2013-02-18 13:55:24 -08:00
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: initialize atomctl SR
2012-12-18 21:10:22 -08:00
Driver core patches for 3.9-rc1
2013-02-21 12:05:51 -08:00
Documentation: update top level 00-INDEX file with new additions
2013-02-18 10:38:54 +01:00
Documentation: Memory barrier semantics of atomic_xchg()
2013-01-08 14:14:55 -08:00
Documentation: remove depends on CONFIG_EXPERIMENTAL
2013-01-11 11:38:03 -08:00
doc: Add x86 CPU0 online/offline feature
2012-11-14 09:39:44 -08:00
firmware: remove last vestiges of dabusb
2012-11-21 13:03:01 -08:00
Documentation DMA-API-HOWTO.txt Add dma mapping error check usage examples
2012-10-24 17:07:43 +02:00
dma-debug: New interfaces to debug dma mapping errors
2012-10-24 17:06:43 +02:00
common: DMA-mapping: add DMA_ATTR_FORCE_CONTIGUOUS attribute
2012-11-29 03:30:34 -08:00
doc: fix quite a few typos within Documentation
2012-11-19 14:28:24 +01:00
x86: remove offsets.h from .gitignore and dontdiff
2012-11-19 14:10:53 +01:00
dynamic_debug: dynamic hex dump
2013-01-17 12:19:09 -08:00
gpiolib: provide provision to register pin ranges
2012-11-11 19:06:00 +01:00
HOWTO: fix double words typo
2012-12-10 15:54:27 +01:00
Documentation: remove depends on CONFIG_EXPERIMENTAL
2013-01-11 11:38:03 -08:00
IPMI: Remove SMBus driver info from the docs
2012-10-16 18:07:12 -07:00
irqdomain: update documentation
2012-12-05 23:52:10 +00:00
Kernel-doc: Convention: Use a "Return" section to describe return values
2012-11-27 21:08:57 +01:00
acpi, memory-hotplug: support getting hotplug info from SRAT
2013-02-23 17:50:14 -08:00
kref: Add kref_get_unless_zero documentation
2012-11-28 18:36:06 +10:00
wanrouter: completely decouple obsolete code from kernel.
2013-01-31 19:20:33 -05:00
Documentation: Memory barrier semantics of atomic_xchg()
2013-01-08 14:14:55 -08:00
hotplug: update nodemasks management
2012-12-12 17:38:33 -08:00
percpu-rw-semaphore: fix documentation typos
2012-09-26 19:56:15 +02:00
drivers/pinctrl: grab default handles from device core
2013-01-23 16:39:51 +01:00
lib/vsprintf.c: add %pa format specifier for phys_addr_t types
2013-02-21 17:22:20 -08:00
rbtree: move augmented rbtree functionality to rbtree_augmented.h
2012-10-09 16:22:40 +09:00
remoteproc: add rproc_report_crash function to notify rproc crashes
2012-09-18 12:53:22 +03:00
Documentation: remove __dev* attributes.
2013-01-03 15:57:16 -08:00
rtc-proc: permit the /proc/driver/rtc device to use other devices
2012-10-06 03:05:01 +09:00
mfd: smsc: Add support for smsc gpio io/keypad driver
2012-10-01 15:27:48 +02:00
Documentation/sparse.txt: document context annotations for lock checking
2012-12-17 17:15:23 -08:00
sparc64: Add global PMU register dumping via sysrq.
2012-10-16 09:34:01 -07:00
vfio: Trivial Documentation correction
2012-09-21 10:48:03 -06:00
01a178a94e
