Tejun Heo d02f7aa8dc cfq-iosched: enable full blkcg hierarchy support ... With the previous two patches, all cfqg scheduling decisions are based on vfraction and ready for hierarchy support. The only thing which keeps the behavior flat is cfqg_flat_parent() which makes vfraction calculation consider all non-root cfqgs children of the root cfqg. Replace it with cfqg_parent() which returns the real parent. This enables full blkcg hierarchy support for cfq-iosched. For example, consider the following hierarchy. root / \ A:500 B:250 / \ AA:500 AB:1000 For simplicity, let's say all the leaf nodes have active tasks and are on service tree. For each leaf node, vfraction would be AA: (500 / 1500) * (500 / 750) =~ 0.2222 AB: (1000 / 1500) * (500 / 750) =~ 0.4444 B: (250 / 750) =~ 0.3333 and vdisktime will be distributed accordingly. For more detail, please refer to Documentation/block/cfq-iosched.txt. v2: cfq-iosched.txt updated to describe group scheduling as suggested by Vivek. v3: blkio-controller.txt updated. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Vivek Goyal <vgoyal@redhat.com>		2013-01-09 08:05:11 -08:00
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ABI	Merge branch 'akpm' (Andrew's patch-bomb)	2012-12-20 20:00:43 -08:00
DocBook	kstrto*: add documentation	2012-12-17 17:15:22 -08:00
EDID	…
PCI	PCI: SRIOV control and status via sysfs (documentation)	2012-11-28 11:25:47 -07:00
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
accounting	doc: Remove unnecessary declarations from Documentation/accounting/getdelays.c	2012-11-26 14:22:21 +01:00
acpi	Merge branch 'x86-acpi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-12-14 10:03:23 -08:00
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	Documentation: Fixes a word in Documentation/arm64/memory.txt	2012-11-29 16:33:18 +00:00
auxdisplay	…
backlight	drivers/video/backlight/lp855x_bl.c: use generic PWM functions	2012-12-17 17:15:16 -08:00
blackfin	…
block	cfq-iosched: enable full blkcg hierarchy support	2013-01-09 08:05:11 -08:00
blockdev	…
bus-devices	ARM: OMAP2+: gpmc: generic timing calculation	2012-11-09 18:07:11 +05:30
cdrom	…
cgroups	cfq-iosched: enable full blkcg hierarchy support	2013-01-09 08:05:11 -08:00
connector	…
console	…
cpu-freq	…
cpuidle	…
cris	…
crypto	…
development-process	…
device-mapper	…
devicetree	watchdog: twl4030_wdt: add DT support	2013-01-02 12:07:05 +01:00
driver-model	…
dvb	…
early-userspace	…
extcon	…
fault-injection	doc: fix quite a few typos within Documentation	2012-11-19 14:28:24 +01:00
fb	…
filesystems	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2012-12-20 18:14:31 -08:00
firmware_class	firmware loader: document firmware cache mechanism	2012-11-14 15:07:18 -08:00
frv	…
hid	doc: fix quite a few typos within Documentation	2012-11-19 14:28:24 +01:00
hwmon	hwmon: (it87) Report thermal sensor type as Intel PECI if appropriate	2012-12-19 22:17:02 +01:00
i2c	i2c: Mention functionality flags in SMBus protocol documentation	2012-12-16 21:11:55 +01:00
i2o	…
ia64	…
ide	…
infiniband	…
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	…
isdn	…
ja_JP	…
kbuild	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2012-12-13 12:00:02 -08:00
kdump	…
ko_KR	…
laptops	…
leds	…
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	doc: Tighten-up and clarify description of tcp_fin_timeout	2012-12-10 17:14:28 -05:00
nfc	…
parisc	…
pcmcia	…
power	Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux	2012-12-11 22:15:57 -08:00
powerpc	powerpc/hw-breakpoint: Use generic hw-breakpoint interfaces for new PPC ptrace flags	2012-11-15 13:00:23 +11:00
pps	…
prctl	…
pti	…
ptp	…
rapidio	…
s390	…
scheduler	…
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	…
sh	…
sound	ALSA: usb-audio: Deprecate async_unlink option	2012-11-21 11:37:40 +01:00
spi	…
sysctl	…
target	…
thermal	Thermal: Add documentation for platform layer data	2012-11-05 14:00:09 +08:00
timers	…
trace	…
usb	USB: report submission of active URBs	2012-11-11 18:10:46 -08:00
vDSO	…
video4linux	doc: fix quite a few typos within Documentation	2012-11-19 14:28:24 +01:00
virtual	KVM: PPC: booke: Get/set guest EPCR register using ONE_REG interface	2012-12-06 01:34:20 +01:00
vm	Merge branch 'akpm' (Andrew's patch-bomb)	2012-12-13 13:11:15 -08:00
w1	…
watchdog	…
wimax	…
x86	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-12-19 12:56:42 -08:00
xtensa	xtensa: initialize atomctl SR	2012-12-18 21:10:22 -08:00
zh_CN	Documentation:Update Documentation/zh_CN/arm64/memory.txt	2012-11-26 16:25:37 -08:00
.gitignore	…
00-INDEX	Documentation: remove reference to feature-removal-schedule.txt	2012-12-17 17:15:12 -08:00
BUG-HUNTING	…
Changes	…
CodingStyle	…
DMA-API-HOWTO.txt	…
DMA-API.txt	…
DMA-ISA-LPC.txt	…
DMA-attributes.txt	common: DMA-mapping: add DMA_ATTR_FORCE_CONTIGUOUS attribute	2012-11-29 03:30:34 -08:00
HOWTO	HOWTO: fix double words typo	2012-12-10 15:54:27 +01:00
IPMI.txt	…
IRQ-affinity.txt	…
IRQ-domain.txt	irqdomain: update documentation	2012-12-05 23:52:10 +00:00
IRQ.txt	…
Intel-IOMMU.txt	…
Makefile	…
ManagementStyle	…
SAK.txt	…
SM501.txt	…
SecurityBugs	…
SubmitChecklist	…
SubmittingDrivers	…
SubmittingPatches	…
VGA-softcursor.txt	…
applying-patches.txt	…
atomic_ops.txt	…
bad_memory.txt	…
basic_profiling.txt	…
binfmt_misc.txt	…
braille-console.txt	…
bt8xxgpio.txt	…
btmrvl.txt	…
bus-virt-phys-mapping.txt	…
cachetlb.txt	…
circular-buffers.txt	…
clk.txt	…
coccinelle.txt	…
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-buf-sharing.txt	doc: fix quite a few typos within Documentation	2012-11-19 14:28:24 +01:00
dmaengine.txt	…
dontdiff	x86: remove offsets.h from .gitignore and dontdiff	2012-11-19 14:10:53 +01:00
dynamic-debug-howto.txt	…
edac.txt	…
eisa.txt	…
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	…
hw_random.txt	…
hwspinlock.txt	…
init.txt	…
initrd.txt	…
intel_txt.txt	…
io-mapping.txt	…
io_ordering.txt	…
iostats.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	Documentation: kernel-parameters.txt remove capability.disable	2012-12-20 17:40:19 -08:00
kmemcheck.txt	…
kmemleak.txt	…
kobject.txt	…
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	…
md.txt	…
media-framework.txt	…
memory-barriers.txt	…
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	…
pi-futex.txt	…
pinctrl.txt	gpiolib: provide provision to register pin ranges	2012-11-11 19:06:00 +01:00
pnp.txt	…
preempt-locking.txt	…
printk-formats.txt	…
pwm.txt	…
ramoops.txt	…
rbtree.txt	…
remoteproc.txt	…
rfkill.txt	…
robust-futex-ABI.txt	…
robust-futexes.txt	…
rpmsg.txt	…
rt-mutex-design.txt	…
rt-mutex.txt	…
rtc.txt	…
serial-console.txt	…
sgi-ioc4.txt	…
sgi-visws.txt	…
smsc_ece1099.txt	…
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	…
static-keys.txt	…
svga.txt	…
sysfs-rules.txt	…
sysrq.txt	…
unaligned-memory-access.txt	…
unicode.txt	…
unshare.txt	…
vfio.txt	…
vgaarbiter.txt	…
video-output.txt	…
vme_api.txt	…
volatile-considered-harmful.txt	…
workqueue.txt	…
xz.txt	…
zorro.txt	…