linux-sg2042/drivers
Linus Torvalds c717d15614 Final power management fixes for 3.15
- Taking non-idle time into account when calculating core busy
    time was a mistake and led to a performance regression.  Since
    the problem it was supposed to address is now taken care of in
    a different way, we don't need to do it any more, so drop the
    non-idle time tracking from intel_pstate.  Dirk Brandewie.
 
  - Changing to fixed point math throughout the busy calculation
    introduced rounding errors that adversely affect the accuracy
    of intel_pstate's computations.  Fix from Dirk Brandewie.
 
  - The PID controller algorithm used by intel_pstate assumes that
    the time interval between two adjacent samples will always be the
    same which is not the case for deferable timers (used by
    intel_pstate) when the system is idle. This leads to inaccurate
    predictions and artificially increases convergence times for
    the minimum P-state.  Fix from Dirk Brandewie.
 
  - intel_pstate carries out computations using 32-bit variables
    that may overflow for large enough values of APERF/MPERF.  Switch
    to using 64-bit variables for computations, from Doug Smythies.
 
 /
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Merge tag 'pm-3.15-final' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull intel pstate fixes from Rafael Wysocki:
 "Final power management fixes for 3.15

   - Taking non-idle time into account when calculating core busy time
     was a mistake and led to a performance regression.  Since the
     problem it was supposed to address is now taken care of in a
     different way, we don't need to do it any more, so drop the
     non-idle time tracking from intel_pstate.  Dirk Brandewie.

   - Changing to fixed point math throughout the busy calculation
     introduced rounding errors that adversely affect the accuracy of
     intel_pstate's computations.  Fix from Dirk Brandewie.

   - The PID controller algorithm used by intel_pstate assumes that the
     time interval between two adjacent samples will always be the same
     which is not the case for deferable timers (used by intel_pstate)
     when the system is idle.  This leads to inaccurate predictions and
     artificially increases convergence times for the minimum P-state.
     Fix from Dirk Brandewie.

   - intel_pstate carries out computations using 32-bit variables that
     may overflow for large enough values of APERF/MPERF.  Switch to
     using 64-bit variables for computations, from Doug Smythies"

* tag 'pm-3.15-final' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  intel_pstate: Improve initial busy calculation
  intel_pstate: add sample time scaling
  intel_pstate: Correct rounding in busy calculation
  intel_pstate: Remove C0 tracking
2014-06-04 07:48:54 -07:00
..
accessibility
acpi ACPI / thermal: fix workqueue destroy order 2014-05-26 14:34:07 +02:00
amba ARM: SoC: driver changes 2014-04-05 15:37:40 -07:00
ata libata: Blacklist queued trim for Crucial M500 2014-06-02 16:59:25 -07:00
atm
auxdisplay
base drivercore: deferral race condition fix 2014-04-29 15:44:05 +01:00
bcma bcma: gpio: register 32 GPIOs on BCM5357 2014-03-27 14:20:04 -04:00
block virtio_blk: fix race between start and stop queue 2014-05-27 08:41:10 -06:00
bluetooth Bluetooth: Add support for Lite-on [04ca:3007] 2014-04-25 09:47:16 +03:00
bus bus: mvebu-mbus: allow several windows with the same target/attribute 2014-04-24 03:48:08 +00:00
cdrom
char This fixes a BUG_ON-causing regression that was introduced during the 2014-05-21 18:56:35 +09:00
clk PLLE fixes for 3.15 2014-05-27 21:11:08 -07:00
clocksource clocksource: tcb_clksrc: Make tc_mode interrupt safe 2014-05-22 18:54:58 +02:00
connector net: Use netlink_ns_capable to verify the permisions of netlink messages 2014-04-24 13:44:54 -04:00
cpufreq intel_pstate: Improve initial busy calculation 2014-06-02 12:46:01 +02:00
cpuidle Merge branch 'pm-cpuidle' 2014-04-08 13:27:40 +02:00
crypto crypto: caam - add allocation failure handling in SPRINTFCAT macro 2014-04-28 18:17:18 +08:00
dca
devfreq
dio
dma Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma 2014-05-27 13:57:00 -07:00
edac Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2014-04-04 09:50:07 -07:00
eisa
extcon
firewire firewire: revert to 4 GB RDMA, fix protocols using Memory Space 2014-05-29 15:50:30 +02:00
firmware iscsi_ibft: Fix finding Broadcom specific ibft sign 2014-05-13 14:54:14 -04:00
fmc
gpio gpio: mcp23s08: Bug fix of SPI device tree registration. 2014-05-09 10:28:16 +02:00
gpu drm/radeon: use the CP DMA on CIK 2014-06-02 10:57:04 +02:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2014-05-07 16:07:58 -07:00
hsi
hv Drivers: hv: vmbus: Negotiate version 3.0 when running on ws2012r2 hosts 2014-04-16 14:14:07 -07:00
hwmon hwmon: (ntc_thermistor) Fix OF device ID mapping 2014-05-25 17:23:08 +02:00
hwspinlock
i2c i2c: rcar: bail out on zero length transfers 2014-05-14 18:59:57 +02:00
ide
idle intel_idle: fix IVT idle state table setting 2014-04-21 23:36:07 +02:00
iio iio: adc: Nothing in ADC should be a bool CONFIG 2014-04-26 11:22:16 +01:00
infiniband Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-05-23 15:29:43 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2014-05-30 12:07:48 -07:00
iommu iommu/amd: fix enabling exclusion range for an exact device 2014-05-13 12:33:12 +02:00
ipack
irqchip mvebu irqchip ifxes for v3.15 2014-04-29 19:23:22 +02:00
isdn hisax/icc: add missing semicolon after label 2014-04-22 21:22:47 -04:00
leds Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/linux-leds 2014-04-10 09:06:10 -07:00
lguest drivers/lguest/page_tables.c: rename do_set_pte() 2014-04-07 16:35:52 -07:00
macintosh
mailbox
mcb drivers: mcb: fix memory leak in chameleon_parse_cells() error path 2014-04-16 12:28:47 -07:00
md Two md bugfixes for possible corruption when restarting reshape 2014-06-02 17:04:37 -07:00
media Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media 2014-05-21 19:01:08 +09:00
memory memory: mvebu-devbus: fix the conversion of the bus width 2014-04-17 04:14:30 +00:00
memstick
message PCI changes for the v3.15 merge window: 2014-04-01 15:14:04 -07:00
mfd mmc: rtsx: Revert "mmc: rtsx: add support for pre_req and post_req" 2014-05-08 08:44:50 +01:00
misc misc: Grammar s/addition/additional/ 2014-04-16 12:28:47 -07:00
mmc mmc: rtsx: Revert "mmc: rtsx: add support for pre_req and post_req" 2014-05-08 08:44:50 +01:00
mtd MTD update for 3.15-rc5 2014-05-07 16:28:52 -07:00
net net: ec_bhf: Add runtime dependencies 2014-06-02 17:02:28 -07:00
nfc
ntb ntb: Use pci_enable_msix_range() instead of pci_enable_msix() 2014-04-07 10:59:20 -07:00
nubus
of of: make of_update_property() usable earlier in the boot process 2014-05-14 15:27:36 +01:00
oprofile
parisc
parport
pci PCI updates for v3.15: 2014-05-21 18:57:25 +09:00
pcmcia PCI changes for the v3.15 merge window: 2014-04-01 15:14:04 -07:00
phy phy: fix kernel oops in phy_lookup() 2014-04-24 12:53:38 -07:00
pinctrl pinctrl: vt8500: Ensure value reg is updated when setting direction 2014-05-22 23:46:10 +02:00
platform alienware-wmi: cover some scenarios where memory allocations would fail 2014-04-10 12:11:56 -04:00
pnp asmlinkage: Add explicit __visible to drivers/*, lib/*, kernel/* 2014-05-05 16:07:46 -07:00
power power/reset: vexpress: Fix restart/power off operation 2014-04-24 17:20:50 +01:00
powercap CPU hotplug notifiers registration fixes for 3.15-rc1 2014-04-07 14:55:46 -07:00
pps
ps3
ptp ptp: fix kconfig dependency warnings 2014-05-12 00:27:26 -04:00
pwm Shiraz has moved 2014-04-18 16:40:08 -07:00
rapidio rapidio: rework device hierarchy and introduce mport class of devices 2014-04-07 16:36:07 -07:00
regulator regulator: pbias: Convert to use regmap helper functions 2014-04-14 22:16:25 +01:00
remoteproc
reset Merge branch 'reset/for_v3.15' of git://git.pengutronix.de/git/pza/linux into next/drivers 2014-03-27 01:28:19 +01:00
rpmsg
rtc drivers/rtc/rtc-hym8563.c: set uie_unsupported 2014-05-11 17:55:48 +09:00
s390 s390/chsc: fix SEI usage on old FW levels 2014-04-17 12:46:28 +02:00
sbus
scsi SCSI fixes on 20140524 2014-05-25 10:13:50 -07:00
sfi
sh drivers: sh: compile drivers/sh/pm_runtime.c if ARCH_SHMOBILE_MULTI 2014-05-12 16:05:01 +09:00
sn
spi Merge remote-tracking branches 'spi/fix/pxa2xx' and 'spi/fix/qup' into spi-linus 2014-05-13 19:08:34 +01:00
spmi
ssb
staging staging: r8192e_pci: fix htons error 2014-05-28 14:46:51 -07:00
target target: fix memory leak on XCOPY 2014-05-17 15:49:40 -07:00
tc
thermal Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux 2014-04-10 09:15:46 -07:00
tty Staging: speakup: Update __speakup_paste_selection() tty (ab)usage to match vt 2014-05-24 02:25:11 +09:00
uio
usb xhci: delete endpoints from bandwidth list before freeing whole device 2014-05-28 14:53:53 -07:00
uwb uwb: don't call spin_unlock_irq in a USB completion handler 2014-04-24 12:45:40 -07:00
vfio VFIO updates for v3.15 include: 2014-04-03 14:05:02 -07:00
vhost Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2014-04-12 16:51:08 -07:00
video video: Kconfig: move drm and fb into separate menus 2014-04-17 08:10:20 +03:00
virt
virtio
vlynq
vme vme_tsi148: Utilize to_pci_dev() macro 2014-04-16 14:08:37 -07:00
w1 w1: avoid recursive device_add 2014-04-16 14:07:51 -07:00
watchdog CPU hotplug notifiers registration fixes for 3.15-rc1 2014-04-07 14:55:46 -07:00
xen Xen bug fixes for 3.15-rc5 2014-05-13 11:21:01 +09:00
zorro
Kconfig
Makefile SH Driver Update for v3.15 2014-05-22 04:26:23 +09:00