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5409d2cd84
linux/drivers
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Anton Blanchard 5409d2cd84 memory hotplug: Speed up add/remove when blocks are larger than PAGES_PER_SECTION 
On ppc64 the minimum memory section for hotplug is 16MB but most
recent machines have a memory block size of 256MB. This means
memory_block_change_state does 16 separate calls to
memory_section_action.

This also means we call the notifiers 16 times and the hook
in the ehea network driver is quite costly. To offline one 256MB
region takes:

# time echo offline > /sys/devices/system/memory/memory32/state
7.9s

This patch removes the loop and calls online_pages or
remove_memory once for the entire region and in doing so makes
the logic simpler since we don't have to back out if things fail
part way through.

The same test to offline one region now takes:

# time echo online > /sys/devices/system/memory/memory32/state
0.67s

Over 11 times faster.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-05-11 15:19:27 -07:00
..
accessibility
acpi Fix common misspellings 2011-03-31 11:26:23 -03:00
amba PM / Hibernate: Introduce CONFIG_HIBERNATE_CALLBACKS 2011-04-11 22:54:42 +02:00
ata Fix common misspellings 2011-03-31 11:26:23 -03:00
atm Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
auxdisplay Fix common misspellings 2011-03-31 11:26:23 -03:00
base memory hotplug: Speed up add/remove when blocks are larger than PAGES_PER_SECTION 2011-05-11 15:19:27 -07:00
block Fix common misspellings 2011-03-31 11:26:23 -03:00
bluetooth Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
cdrom Fix common misspellings 2011-03-31 11:26:23 -03:00
char RAW driver: Remove call to kobject_put(). 2011-05-06 17:52:32 -07:00
clk
clocksource
connector connector: convert to synchronous netlink message processing 2011-03-30 17:14:33 -07:00
cpufreq Fix common misspellings 2011-03-31 11:26:23 -03:00
cpuidle
crypto Fix common misspellings 2011-03-31 11:26:23 -03:00
dca drivers/dca/dca-core.c: use list_move() instead of list_del()/list_add() combination 2011-03-22 17:44:12 -07:00
dio
dma Merge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6 2011-04-11 15:44:38 -07:00
edac Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
eisa
firewire Fix common misspellings 2011-03-31 11:26:23 -03:00
firmware efivars: prevent oops on unload when efi is not enabled 2011-05-06 17:52:32 -07:00
gpio Merge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6 2011-04-11 15:44:38 -07:00
gpu Revert "i915: restore only the mode of this driver on lastclose" 2011-04-13 09:20:24 +10:00
hid Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
hwmon Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
hwspinlock hwspinlock: depend on OMAP4 2011-03-18 17:15:11 -07:00
i2c i2c-algo-bit: Call pre/post_xfer for bit_test 2011-04-17 10:20:19 +02:00
ide Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
idle
ieee802154 ieee802154: change to new flag variable 2011-03-17 14:05:34 +01:00
infiniband Fix common misspellings 2011-03-31 11:26:23 -03:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2011-04-18 13:29:03 -07:00
isdn Fix common misspellings 2011-03-31 11:26:23 -03:00
leds leds/leds-regulator.c: fix handling of already enabled regulators 2011-04-14 16:06:54 -07:00
lguest Fix common misspellings 2011-03-31 11:26:23 -03:00
macintosh Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
mca
md md: fix up raid1/raid10 unplugging. 2011-04-18 18:25:43 +10:00
media Merge branch 'for-linus2' of git://git.profusion.mobi/users/lucas/linux-2.6 2011-04-07 11:14:49 -07:00
memstick Fix common misspellings 2011-03-31 11:26:23 -03:00
message Fix common misspellings 2011-03-31 11:26:23 -03:00
mfd mfd: Fetch cell pointer from platform_device->mfd_cell 2011-04-12 11:13:00 +02:00
misc misc: fix ti-st build issues 2011-04-29 14:11:03 -07:00
mmc Fix common misspellings 2011-03-31 11:26:23 -03:00
mtd Merge git://git.infradead.org/mtd-2.6 2011-04-09 13:23:50 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2011-04-11 07:27:24 -07:00
nfc
nubus
of Fix common misspellings 2011-03-31 11:26:23 -03:00
oprofile
parisc Fix common misspellings 2011-03-31 11:26:23 -03:00
parport Fix common misspellings 2011-03-31 11:26:23 -03:00
pci PM / Hibernate: Introduce CONFIG_HIBERNATE_CALLBACKS 2011-04-11 22:54:42 +02:00
pcmcia ARM: pxa: convert incorrect IRQ_TO_IRQ() to irq_to_gpio() 2011-04-13 09:30:40 +08:00
platform Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86 2011-04-13 09:15:55 -07:00
pnp Fix common misspellings 2011-03-31 11:26:23 -03:00
power drivers: Final irq namespace conversion 2011-03-29 14:48:19 +02:00
pps Fix common misspellings 2011-03-31 11:26:23 -03:00
ps3 Fix common misspellings 2011-03-31 11:26:23 -03:00
rapidio RapidIO/mpc85xx: fix possible mport registration problems 2011-04-14 16:06:56 -07:00
regulator Fix common misspellings 2011-03-31 11:26:23 -03:00
rtc Merge branches 'core-fixes-for-linus', 'perf-fixes-for-linus', 'sched-fixes-for-linus', 'timer-fixes-for-linus' and 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2011-04-16 09:45:08 -07:00
s390 Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6 2011-04-08 07:36:14 -07:00
sbus Fix common misspellings 2011-03-31 11:26:23 -03:00
scsi block: add blk_run_queue_async 2011-04-18 11:41:33 +02:00
sfi Fix common misspellings 2011-03-31 11:26:23 -03:00
sh sh: Fix irq cleanup fallout 2011-03-30 00:15:49 +02:00
sn
spi Merge branch 'spi/merge' of git://git.secretlab.ca/git/linux-2.6 2011-04-11 15:44:38 -07:00
ssb Fix common misspellings 2011-03-31 11:26:23 -03:00
staging Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86 2011-04-12 15:24:23 -07:00
target Fix common misspellings 2011-03-31 11:26:23 -03:00
tc
telephony Fix common misspellings 2011-03-31 11:26:23 -03:00
thermal
tty Merge branch 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 2011-04-07 12:48:45 -07:00
uio uio: clean uioinfo when uninstall uio driver 2011-04-19 16:59:57 -07:00
usb Revert "USB: isp1760-hcd: move imask clear after pending work is done" 2011-04-14 13:37:07 -07:00
uwb Fix common misspellings 2011-03-31 11:26:23 -03:00
vhost
video ARM: pxafb: Fix access to nonexistent member of pxafb_info 2011-04-12 23:07:42 +08:00
virtio
vlynq vlynq: Convert irq functions 2011-03-28 19:33:04 +02:00
w1 Fix common misspellings 2011-03-31 11:26:23 -03:00
watchdog watchdog: mpc8xxx_wdt: fix build 2011-04-07 20:20:24 +00:00
xen Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 2011-04-12 17:18:05 -07:00
zorro
Kconfig
Makefile