diff options
| author | Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> | 2005-07-29 16:15:00 -0700 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2005-08-26 15:09:24 -0700 |
| commit | 4db8699bcfa8faddb5727b1cb010a4d9b8a42e8c (patch) | |
| tree | eb4cb14927ed9cf4507f875cd69fe35f87b3b3bc /arch/ia64/Kconfig | |
| parent | fd589e0b662c1ea8cfb1e0d20d60a2510979865b (diff) | |
| download | lwn-4db8699bcfa8faddb5727b1cb010a4d9b8a42e8c.tar.gz lwn-4db8699bcfa8faddb5727b1cb010a4d9b8a42e8c.zip | |
[IA64] Add ACPI based P-state support
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>
Diffstat (limited to 'arch/ia64/Kconfig')
| -rw-r--r-- | arch/ia64/Kconfig | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 80988136f26d..3deced637f07 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -383,6 +383,12 @@ source "drivers/acpi/Kconfig" endif +if PM + +source "arch/ia64/kernel/cpufreq/Kconfig" + +endif + endmenu if !IA64_HP_SIM |