mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-21 08:53:41 +00:00
4db8699bcf
Patch to support P-state transitions on ia64. This driver is based on ACPI,
and uses the ACPI processor driver interface to find out the P-state support
information for the processor. This driver plugs into generic cpufreq
infrastructure.
Once this driver is loaded successfully, ondemand/userspace governor can be
used to change the CPU frequency dynamically based on load or on request from
userspace process.
Refer :
ACPI specification -
http://www.acpi.info
P-state related PAL calls -
http://developer.intel.com/design/itanium/downloads/24869909.pdf
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
30 lines
472 B
Plaintext
30 lines
472 B
Plaintext
|
|
#
|
|
# CPU Frequency scaling
|
|
#
|
|
|
|
menu "CPU Frequency scaling"
|
|
|
|
source "drivers/cpufreq/Kconfig"
|
|
|
|
if CPU_FREQ
|
|
|
|
comment "CPUFreq processor drivers"
|
|
|
|
config IA64_ACPI_CPUFREQ
|
|
tristate "ACPI Processor P-States driver"
|
|
select CPU_FREQ_TABLE
|
|
depends on ACPI_PROCESSOR
|
|
help
|
|
This driver adds a CPUFreq driver which utilizes the ACPI
|
|
Processor Performance States.
|
|
|
|
For details, take a look at <file:Documentation/cpu-freq/>.
|
|
|
|
If in doubt, say N.
|
|
|
|
endif # CPU_FREQ
|
|
|
|
endmenu
|
|
|