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Stratos Karafotis 1e4988563d cpufreq: Break out early when frequency equals target_freq 
Many drivers keep frequencies in frequency table in ascending
or descending order. When governor tries to change to policy->min
or policy->max respectively then the cpufreq_frequency_table_target
could return on first iteration. This will save some iteration cycles.

So, break out early when a frequency in cpufreq_frequency_table
equals to target one.

Testing this during kernel compilation using ondemand governor
with a frequency table in ascending order, the
cpufreq_frequency_table_target returned early on the first
iteration at about 30% of times called.

Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-05-20 14:02:09 +02:00
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accessibility
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acpi
Merge branches 'acpi-ec' and 'acpi-processor'
2014-05-03 00:20:31 +02:00
amba
ARM: SoC: driver changes
2014-04-05 15:37:40 -07:00
ata
Merge branch 'for-3.15-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
2014-04-24 09:57:02 -07:00
atm
atm: idt77105: Use del_timer_sync() in exit path
2014-03-25 21:06:02 -04:00
auxdisplay
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base
Merge back earlier 'pm-cpufreq' material.
2014-05-08 13:06:38 +02:00
bcma
bcma: gpio: register 32 GPIOs on BCM5357
2014-03-27 14:20:04 -04:00
block
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2014-04-12 14:49:50 -07:00
bluetooth
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2014-04-02 20:53:45 -07:00
bus
ARM: SoC: driver changes
2014-04-05 15:37:40 -07:00
cdrom
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char
TTY/Serial driver fixes for 3.15-rc2
2014-04-18 16:57:53 -07:00
clk
vexpress: Initialise the sysregs before setting up the clocks
2014-05-04 11:35:29 +01:00
clocksource
Merge branch 'clockevents/3.15-fixes' of git://git.linaro.org/people/daniel.lezcano/linux into timers/urgent
2014-04-29 19:26:58 +02:00
connector
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2014-04-02 20:53:45 -07:00
cpufreq
cpufreq: Break out early when frequency equals target_freq
2014-05-20 14:02:09 +02:00
cpuidle
Merge branch 'pm-cpuidle'
2014-04-08 13:27:40 +02:00
crypto
Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2014-04-03 09:28:16 -07:00
dca
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devfreq
PM / devfreq: Rewrite devfreq_update_status() to fix multiple bugs
2014-03-21 11:16:30 +09:00
dio
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dma
dma: fix eDMA driver as a subsys_initcall
2014-04-16 12:03:47 +05:30
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
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extcon
extcon: Move OF helper function to extcon core and change function name
2014-03-19 14:41:58 +09:00
firewire
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firmware
Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2014-04-11 11:58:33 -07:00
fmc
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gpio
A few fixes for the GPIO tree:
2014-04-22 09:28:02 -07:00
gpu
drm/exynos: use %pad for dma_addr_t
2014-04-30 09:48:54 +10:00
hid
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
2014-04-18 10:31:34 -07:00
hsi
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hv
Drivers: hv: vmbus: Negotiate version 3.0 when running on ws2012r2 hosts
2014-04-16 14:14:07 -07:00
hwmon
Revert "hwmon: (coretemp) Refine TjMax detection"
2014-05-01 04:07:52 -07:00
hwspinlock
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i2c
Merge branch 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
2014-04-09 08:45:40 -07:00
ide
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idle
intel_idle: fix IVT idle state table setting
2014-04-21 23:36:07 +02:00
iio
First found of IIO fixes for the 3.15 cycle.
2014-04-22 21:29:20 -07:00
infiniband
RDMA/cxgb4: Update Kconfig to include Chelsio T5 adapter
2014-04-28 17:29:41 -07:00
input
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
2014-04-23 07:48:03 -07:00
iommu
Merge git://git.infradead.org/iommu-2.6 into iommu/fixes
2014-04-16 16:09:40 +02:00
ipack
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irqchip
mvebu irqchip ifxes for v3.15
2014-04-29 19:23:22 +02:00
isdn
isdn: icn: buffer overflow in icn_command()
2014-04-16 15:24:15 -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
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mailbox
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mcb
drivers: mcb: fix memory leak in chameleon_parse_cells() error path
2014-04-16 12:28:47 -07:00
md
A few dm-thinp fixes for changes merged in 3.15-rc1.
2014-05-02 14:14:02 -07:00
media
platform: Fix timberdale dependencies
2014-04-16 11:57:27 +05:30
memory
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memstick
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message
PCI changes for the v3.15 merge window:
2014-04-01 15:14:04 -07:00
mfd
mfd: db8500-prcmu: Use cpufreq_for_each_entry macro for iteration
2014-04-30 00:06:34 +02:00
misc
misc: Grammar s/addition/additional/
2014-04-16 12:28:47 -07:00
mmc
MMC highlights for 3.15:
2014-04-09 08:39:39 -07:00
mtd
Shiraz has moved
2014-04-18 16:40:08 -07:00
net
irda: sh_sir: Use cpufreq_for_each_valid_entry macro for iteration
2014-04-30 00:06:54 +02:00
nfc
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ntb
ntb: Use pci_enable_msix_range() instead of pci_enable_msix()
2014-04-07 10:59:20 -07:00
nubus
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of
of/irq: do irq resolution in platform_get_irq
2014-04-24 21:40:22 +01:00
oprofile
oprofile, nmi-timer: Fix CPU hotplug callback registration
2014-03-20 13:43:46 +01:00
parisc
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parport
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pci
PCI: tegra: Use new OF interrupt mapping when possible
2014-04-16 10:24:32 -06:00
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
sh-pfc: r8a7791: Fix definition of MOD_SEL3
2014-04-23 16:09:53 +02:00
platform
alienware-wmi: cover some scenarios where memory allocations would fail
2014-04-10 12:11:56 -04:00
pnp
PNP / ACPI: Do not return errors if _DIS or _SRS are not present
2014-04-30 22:36:33 +02:00
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
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ps3
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ptp
net: ptp: move PTP classifier in its own file
2014-04-01 16:43:18 -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
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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
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rtc
ARM: SoC: driver changes
2014-04-05 15:37:40 -07:00
s390
s390/chsc: fix SEI usage on old FW levels
2014-04-17 12:46:28 +02:00
sbus
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scsi
[SCSI] virtio-scsi: Skip setting affinity on uninitialized vq
2014-04-28 16:16:08 -07:00
sfi
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sh
sh: clk: Use cpufreq_for_each_valid_entry macro for iteration
2014-04-30 00:07:00 +02:00
sn
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spi
Merge remote-tracking branches 'spi/fix/atmel', 'spi/fix/bfin5xx', 'spi/fix/hspi' and 'spi/fix/sirf' into spi-linus
2014-04-23 13:50:18 +01:00
spmi
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ssb
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staging
staging: comedi: usbdux: bug fix for accessing 'ao_chanlist' in private data
2014-04-23 16:20:15 -07:00
target
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-04-12 17:31:22 -07:00
tc
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thermal
thermal: cpu_cooling: Use cpufreq_for_each_valid_entry macro for iteration
2014-04-30 00:06:49 +02:00
tty
serial_core: fix uart PORT_UNKNOWN handling
2014-04-24 15:38:22 -07:00
uio
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usb
usb: option: add and update a number of CMOTech devices
2014-04-25 11:35:04 -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
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virtio
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vlynq
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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 regression and bug fixes for 3.15-rc1.
2014-04-17 10:54:07 -07:00
zorro
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Kconfig
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Makefile
video: move fbdev to drivers/video/fbdev
2014-04-17 08:10:19 +03:00