Corrado Zoccolo
672917dcc7
cpuidle: menu governor: reduce latency on exit
...
Move the state residency accounting and statistics computation off the hot
exit path.
On exit, the need to recompute statistics is recorded, and new statistics
will be computed when menu_select is called again.
The expected effect is to reduce processor wakeup latency from sleep
(C-states). We are speaking of few hundreds of cycles reduction out of a
several microseconds latency (determined by the hardware transition), so
it is difficult to measure.
Signed-off-by: Corrado Zoccolo <czoccolo@gmail.com>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Adam Belay <abelay@novell.com
Acked-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-22 07:17:45 -07:00
..
accessibility
acpi
x86: Trivial whitespace cleanups
2009-09-20 20:18:57 +02:00
amba
ata
libata: Add pata_atp867x driver for Artop/Acard ATP867X controllers
2009-09-17 16:47:06 -04:00
atm
auxdisplay
base
mm: oom analysis: add shmem vmstat
2009-09-22 07:17:27 -07:00
block
const: make block_device_operations const
2009-09-22 07:17:25 -07:00
bluetooth
pcmcia: dtl1_cs: fix pcmcia_loop_config logic
2009-09-15 10:17:16 -07:00
cdrom
const: make block_device_operations const
2009-09-22 07:17:25 -07:00
char
pcmcia: fix read buffer overflow
2009-09-22 07:17:42 -07:00
clocksource
connector
cpufreq
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq
2009-09-18 09:16:57 -07:00
cpuidle
cpuidle: menu governor: reduce latency on exit
2009-09-22 07:17:45 -07:00
crypto
dca
dio
dma
edac
amd64_edac: check NB MCE bank enable on the current node properly
2009-09-16 13:05:46 +02:00
eisa
firewire
driver model: constify attribute groups
2009-09-15 09:50:47 -07:00
firmware
mm: don't use alloc_bootmem_low() where not strictly needed
2009-09-22 07:17:38 -07:00
gpio
gpio: Add WM831X GPIO driver
2009-09-17 09:47:01 +02:00
gpu
Merge branch 'drm-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
2009-09-21 08:10:09 -07:00
hid
Driver-Core: extend devnode callbacks to provide permissions
2009-09-19 12:50:38 -07:00
hwmon
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6
2009-09-18 09:22:36 -07:00
i2c
[PATCH] i2c-imx: make bus available early
2009-09-19 23:36:56 +01:00
ide
const: make block_device_operations const
2009-09-22 07:17:25 -07:00
idle
ieee1394
ieee802154
infiniband
driver model: constify attribute groups
2009-09-15 09:50:47 -07:00
input
Driver-Core: extend devnode callbacks to provide permissions
2009-09-19 12:50:38 -07:00
isdn
const: mark remaining super_operations const
2009-09-22 07:17:24 -07:00
leds
lguest
macintosh
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
2009-09-15 09:51:09 -07:00
mca
md
md: avoid use of broken kzalloc mempool
2009-09-22 07:17:35 -07:00
media
drivers/media/dvb/pt1/pt1.c needs vmalloc.h
2009-09-22 07:17:23 -07:00
memstick
const: make block_device_operations const
2009-09-22 07:17:25 -07:00
message
const: make block_device_operations const
2009-09-22 07:17:25 -07:00
mfd
drivers/mfd/ab3100-core.c: fix powerpc build error
2009-09-22 07:17:24 -07:00
misc
const: mark remaining super_operations const
2009-09-22 07:17:24 -07:00
mmc
const: make block_device_operations const
2009-09-22 07:17:25 -07:00
mtd
const: make block_device_operations const
2009-09-22 07:17:25 -07:00
net
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6
2009-09-20 15:55:39 -07:00
nubus
of
oprofile
const: mark remaining super_operations const
2009-09-22 07:17:24 -07:00
parisc
mm: replace various uses of num_physpages by totalram_pages
2009-09-22 07:17:38 -07:00
parport
pci
Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6
2009-09-16 07:49:54 -07:00
pcmcia
pcmcia: cleanup/fixup patch for sa1100_jornada_pcmcia driver
2009-09-22 07:17:42 -07:00
platform
pnp
power
pps
ps3
rapidio
regulator
regulator: Voltage count for AB3100
2009-09-17 15:48:24 +02:00
rtc
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
2009-09-18 09:43:09 -07:00
s390
const: make block_device_operations const
2009-09-22 07:17:25 -07:00
sbus
const: make block_device_operations const
2009-09-22 07:17:25 -07:00
scsi
const: make block_device_operations const
2009-09-22 07:17:25 -07:00
serial
uartlite: support shared interrupt lines
2009-09-19 13:13:38 -07:00
sh
sn
spi
ssb
ssb/sdio: fix printk format warnings
2009-09-16 16:21:00 -04:00
staging
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6
2009-09-21 09:03:10 -07:00
tc
telephony
thermal
uio
Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
2009-09-18 09:43:09 -07:00
usb
const: mark remaining super_operations const
2009-09-22 07:17:24 -07:00
uwb
Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel/uwb
2009-09-17 09:44:09 -07:00
video
includecheck fix: drivers/video, vgacon.c
2009-09-20 16:01:58 +05:30
virtio
vlynq
w1
watchdog
[WATCHDOG] sizeof cleanup
2009-09-18 08:39:37 +00:00
xen
mm: replace various uses of num_physpages by totalram_pages
2009-09-22 07:17:38 -07:00
zorro
Kconfig
Makefile