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Thomas Renninger 1c2562459f [CPUFREQ] allow ondemand and conservative cpufreq governors to be used as default 
Depending on the transition latency of the HW for cpufreq switches, the
ondemand or conservative governor cannot be used with certain cpufreq
drivers.  Still the ondemand should be the default governor on a wide range
of systems.  This patch allows this and lets the governor fallback to the
performance governor at cpufreq driver load time, if the driver does not
support fast enough frequency switching.

Main benefit is that on e.g.  installation or other systems without
userspace support a working dynamic cpufreq support can be achieved on most
systems by simply loading the cpufreq driver.  This is especially essential
for recent x86(_64) laptop hardware which may rely on working dynamic
cpufreq OS support.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Bryan Wu <bryan.wu@analog.com>
Cc: Andi Kleen <ak@suse.de>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Jones <davej@redhat.com>
 		2007-10-04 18:40:57 -04:00
..
acorn/char Remove the arm26 port 2007-07-31 15:39:39 -07:00
acpi ACPI: CONFIG_ACPI_SLEEP=n power off regression in 2.6.23-rc8 (NOT in rc7) 2007-09-25 17:58:52 -04:00
amba
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ata drivers/ata/pata_ixp4xx_cf.c: ioremap return code check 2007-10-03 14:43:28 -04:00
atm Add some help texts to recently-introduced kconfig items 2007-08-18 09:52:50 -07:00
auxdisplay cfag12864b fix 2007-08-22 19:52:46 -07:00
base Add explicit zeroing to "envp" array in device 'show' method 2007-09-26 09:16:21 -07:00
block Fix "Fix DAC960 driver on machines which don't support 64-bit DMA" 2007-09-19 11:24:16 -07:00
bluetooth [Bluetooth] Add missing stat.byte_rx counter modification 2007-09-09 08:39:27 +02:00
cdrom cdrom_open() forgets to unlock on -EROFS failure exits 2007-09-26 08:20:44 +02:00
char [TCP]: secure_tcp_sequence_number() should not use a too fast clock 2007-10-01 21:01:24 -07:00
clocksource x86_64: fix typo in acpi_pm.c 2007-07-21 18:37:12 -07:00
connector Use menuconfig objects: connector 2007-07-16 09:05:40 -07:00
cpufreq [CPUFREQ] allow ondemand and conservative cpufreq governors to be used as default 2007-10-04 18:40:57 -04:00
crypto Add some help texts to recently-introduced kconfig items 2007-08-18 09:52:50 -07:00
dio
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dma [IOAT]: ioatdma needs to to play nice in a multi-dma-client world 2007-08-26 18:35:40 -07:00
edac drivers/edac: fix e752x correct return code 2007-09-11 17:21:19 -07:00
eisa virtual_eisa_root_init() should be __init 2007-05-08 11:15:02 -07:00
fc4
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firewire firewire: fw-ohci: ignore failure of pci_set_power_state (fix suspend regression) 2007-09-07 18:44:35 +02:00
firmware edd: switch to pci_get based API 2007-07-16 09:05:42 -07:00
hid Add some help texts to recently-introduced kconfig items 2007-08-18 09:52:50 -07:00
hwmon hwmon: End of I/O region off-by-one 2007-09-09 10:38:37 -04:00
i2c i2c-algo-bit: Read block data bugfix 2007-09-09 22:29:14 +02:00
ide ide: remove unused variables from drivers/ide/ppc/pmac.c 2007-09-17 12:35:30 +02:00
ieee1394 ieee1394: ohci1394: fix initialization if built non-modular 2007-09-20 21:19:45 +02:00
infiniband IB/mlx4: Fix data corruption triggered by wrong headroom marking order 2007-09-23 13:03:22 -07:00
input Input: xpad - fix dependancy on LEDS class 2007-09-28 15:38:12 -07:00
isdn [ISDN]: Get rid of some pointless allocation casts in common and bsd comp. 2007-08-26 18:35:46 -07:00
kvm KVM: Fix virtualization menu help text 2007-09-22 12:55:18 -07:00
leds leds: Convert from struct class_device to struct device 2007-07-16 01:15:51 +01:00
lguest fix modules oopsing in lguest guests 2007-09-25 08:51:04 -07:00
macintosh [POWERPC] Fix undefined reference to device_power_up/resume 2007-08-25 16:58:27 +10:00
mca mca: add integrated device bus matching 2007-05-09 12:30:49 -07:00
md raid5: fix 2 bugs in ops_complete_biofill 2007-09-24 13:23:35 -07:00
media V4L/DVB (6052): ivtv: fix udma yuv bug 2007-09-30 10:31:34 -03:00
message Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6 2007-08-06 17:48:34 -07:00
mfd some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
misc Pull thinkpad into release branch 2007-09-17 00:58:40 -04:00
mmc bug in AT91 MCI suspend routines 2007-09-11 17:21:51 +02:00
mtd pci: fix unterminated pci_device_id lists 2007-09-19 11:24:17 -07:00
net sky2: jumbo frame regression fix 2007-10-03 13:39:42 -04:00
nubus some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
of Create drivers/of/platform.c 2007-07-20 14:25:51 +10:00
oprofile [CELL] oprofile: add support to OProfile for profiling CELL BE SPUs 2007-07-20 21:42:24 +02:00
parisc serial: add early_serial_setup() back to header file 2007-07-18 08:38:22 -07:00
parport parport_pc locking fix 2007-07-31 15:39:37 -07:00
pci Fix bogus PCI quirk for e100 2007-09-28 16:21:10 -07:00
pcmcia pcmcia: give socket time to power down 2007-07-31 15:39:38 -07:00
pnp PNP: remove SMCf010 quirk 2007-09-11 17:21:19 -07:00
power [PATCH] missing null termination in power supply uevent 2007-09-21 01:22:23 +04:00
ps3 [POWERPC] PS3: Storage Driver Core 2007-06-28 19:19:20 +10:00
rapidio some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
rtc rtc: rtc-ds1553.c should use resource_size_t for base address 2007-09-19 11:24:17 -07:00
s390 Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6 2007-09-11 07:46:09 -07:00
sbus Videopix Frame Grabber: Fix unreleased lock in vfc_debug() 2007-07-31 15:39:43 -07:00
scsi Merge branch 'sas-fixes' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/misc-2.6 2007-10-02 10:41:06 -07:00
serial [POWERPC] Fix cpm_uart driver for cpm1 machines 2007-09-28 10:26:30 -05:00
sh some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
sn some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
spi spi_mpc83xx: hang fix 2007-09-11 17:21:19 -07:00
tc zs: move to the serial subsystem 2007-07-18 08:38:22 -07:00
telephony some kmalloc/memset ->kzalloc (tree wide) 2007-07-19 10:04:50 -07:00
uio UIO: Hilscher CIF card driver 2007-07-18 15:57:16 -07:00
usb Revert "usb-storage: implement autosuspend" 2007-09-13 06:01:24 -07:00
video intelfb: Fix bug in DPLL disable 2007-09-19 11:24:18 -07:00
w1 missing null termination in one wire uevent 2007-09-25 08:51:04 -07:00
xen xenbus_xs.c: fix a use-after-free 2007-07-26 11:35:17 -07:00
zorro zorro: Make sysfs config attribute read-only 2007-08-22 19:52:45 -07:00
Kconfig Begin to consolidate of_device.c 2007-07-20 13:39:59 +10:00
Makefile [WATCHDOG] Fix pcwd_init_module crash 2007-07-29 18:58:39 +00:00