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Martin Schwidefsky 10ad34bc76 s390: add SMT support 
The multi-threading facility is introduced with the z13 processor family.
This patch adds code to detect the multi-threading facility. With the
facility enabled each core will surface multiple hardware threads to the
system. Each hardware threads looks like a normal CPU to the operating
system with all its registers and properties.

The SCLP interface reports the SMT topology indirectly via the maximum
thread id. Each reported CPU in the result of a read-scp-information
is a core representing a number of hardware threads.

To reflect the reduced CPU capacity if two hardware threads run on a
single core the MT utilization counter set is used to normalize the
raw cputime obtained by the CPU timer deltas. This scaled cputime is
reported via the taskstats interface. The normal /proc/stat numbers
are based on the raw cputime and are not affected by the normalization.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-01-22 12:16:01 +01:00
..
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acpi Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
amba Char/Misc driver patches for 3.19-rc1 2014-12-14 16:43:47 -08:00
android
ata Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
atm Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
auxdisplay
base Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
bcma Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-12-11 17:56:37 -08:00
block Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2014-12-17 16:03:12 -08:00
bluetooth Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
bus Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
cdrom
char Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-12-15 15:52:01 -08:00
clk Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
clocksource Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-12-11 17:56:37 -08:00
connector
coresight
cpufreq Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
cpuidle Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
crypto Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
dca
devfreq
dio
dma Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
dma-buf
edac Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
eisa
extcon Char/Misc driver patches for 3.19-rc1 2014-12-14 16:43:47 -08:00
firewire firewire: sbp2: replace card lock by target lock 2014-12-10 20:53:21 +01:00
firmware Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
fmc
gpio Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
gpu Staging patches for 3.19-rc1 2014-12-15 18:06:13 -08:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2014-12-12 10:26:47 -08:00
hsi * misc. fixes in omap-ssi and nokia-modem drivers 2014-12-15 17:33:47 -08:00
hv Char/Misc driver patches for 3.19-rc1 2014-12-14 16:43:47 -08:00
hwmon Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2014-12-17 10:16:27 -08:00
hwspinlock
i2c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
ide Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
idle
iio Staging patches for 3.19-rc1 2014-12-15 18:06:13 -08:00
infiniband Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-12-11 14:27:06 -08:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2014-12-17 10:06:02 -08:00
iommu ARM: SoC/iommu configuration for 3.19 2014-12-16 14:53:01 -08:00
ipack
irqchip Merge branch 'irq-irqdomain-arm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2014-12-15 17:30:09 -08:00
isdn Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2014-12-12 10:08:06 -08:00
leds Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds 2014-12-15 18:28:25 -08:00
lguest
macintosh
mailbox Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
mcb
md Three fixes for md 2014-12-14 12:13:05 -08:00
media Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
memory MTD updates for 3.19: 2014-12-17 09:59:26 -08:00
memstick
message
mfd Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
misc Char/Misc driver patches for 3.19-rc1 2014-12-14 16:43:47 -08:00
mmc Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
mtd MTD updates for 3.19: 2014-12-17 09:59:26 -08:00
net Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
nfc Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
ntb
nubus
of ARM: SoC/iommu configuration for 3.19 2014-12-16 14:53:01 -08:00
oprofile
parisc
parport Char/Misc driver patches for 3.19-rc1 2014-12-14 16:43:47 -08:00
pci Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
pcmcia Char/Misc driver patches for 3.19-rc1 2014-12-14 16:43:47 -08:00
phy
pinctrl Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
platform Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
pnp
power power supply and reset changes for the v3.19 series 2014-12-15 17:36:45 -08:00
powercap
pps
ps3
ptp
pwm pwm: Changes for v3.19-rc1 2014-12-17 10:10:51 -08:00
rapidio
ras
regulator Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
remoteproc Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
reset Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
rpmsg
rtc Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
s390 s390: add SMT support 2015-01-22 12:16:01 +01:00
sbus
scsi Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
sfi
sh
sn
soc Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2014-12-15 15:52:01 -08:00
spi Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
spmi
ssb Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus 2014-12-11 17:56:37 -08:00
staging Merge branch 'for-3.19' of git://linux-nfs.org/~bfields/linux 2014-12-16 15:25:31 -08:00
target Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2014-12-12 10:08:06 -08:00
tc
thermal Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2014-12-17 10:16:27 -08:00
thunderbolt
tty Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
uio Char/Misc driver patches for 3.19-rc1 2014-12-14 16:43:47 -08:00
usb Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
uwb
vfio VFIO updates for v3.19-rc1 2014-12-17 10:44:22 -08:00
vhost Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-12-11 14:27:06 -08:00
video Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
virt
virtio A balloon enhancement, and a minor race-on-module-unload theoretical 2014-12-17 10:37:56 -08:00
vlynq
vme
w1 Char/Misc driver patches for 3.19-rc1 2014-12-14 16:43:47 -08:00
watchdog Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
xen xen: features and fixes for 3.19-rc0 2014-12-11 18:15:33 -08:00
zorro
Kconfig Staging patches for 3.19-rc1 2014-12-15 18:06:13 -08:00
Makefile Staging patches for 3.19-rc1 2014-12-15 18:06:13 -08:00