mirror of
https://github.com/torvalds/linux.git
synced 2024-11-18 10:01:43 +00:00
0162818804
* 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86, cpu: Fix detection of Celeron Covington stepping A1 and B0 Documentation, ABI: Update L3 cache index disable text x86, AMD, cacheinfo: Fix L3 cache index disable checks x86, AMD, cacheinfo: Fix fallout caused by max3 conversion x86, cpu: Change NOP selection for certain Intel CPUs x86, cpu: Clean up and unify the NOP selection infrastructure x86, percpu: Use ASM_NOP4 instead of hardcoding P6_NOP4 x86, cpu: Move AMD Elan Kconfig under "Processor family" Fix up trivial conflicts in alternative handling (commitdc326fca2b"x86, cpu: Clean up and unify the NOP selection infrastructure" removed some hacky 5-byte instruction stuff, while commitd430d3d7e6"jump label: Introduce static_branch() interface" renamed HAVE_JUMP_LABEL to CONFIG_JUMP_LABEL in the code that went away)
256 lines
7.2 KiB
Plaintext
256 lines
7.2 KiB
Plaintext
#
|
|
# x86 CPU Frequency scaling drivers
|
|
#
|
|
|
|
config X86_PCC_CPUFREQ
|
|
tristate "Processor Clocking Control interface driver"
|
|
depends on ACPI && ACPI_PROCESSOR
|
|
help
|
|
This driver adds support for the PCC interface.
|
|
|
|
For details, take a look at:
|
|
<file:Documentation/cpu-freq/pcc-cpufreq.txt>.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called pcc-cpufreq.
|
|
|
|
If in doubt, say N.
|
|
|
|
config X86_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.
|
|
This driver also supports Intel Enhanced Speedstep.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called acpi-cpufreq.
|
|
|
|
For details, take a look at <file:Documentation/cpu-freq/>.
|
|
|
|
If in doubt, say N.
|
|
|
|
config ELAN_CPUFREQ
|
|
tristate "AMD Elan SC400 and SC410"
|
|
select CPU_FREQ_TABLE
|
|
depends on MELAN
|
|
---help---
|
|
This adds the CPUFreq driver for AMD Elan SC400 and SC410
|
|
processors.
|
|
|
|
You need to specify the processor maximum speed as boot
|
|
parameter: elanfreq=maxspeed (in kHz) or as module
|
|
parameter "max_freq".
|
|
|
|
For details, take a look at <file:Documentation/cpu-freq/>.
|
|
|
|
If in doubt, say N.
|
|
|
|
config SC520_CPUFREQ
|
|
tristate "AMD Elan SC520"
|
|
select CPU_FREQ_TABLE
|
|
depends on MELAN
|
|
---help---
|
|
This adds the CPUFreq driver for AMD Elan SC520 processor.
|
|
|
|
For details, take a look at <file:Documentation/cpu-freq/>.
|
|
|
|
If in doubt, say N.
|
|
|
|
|
|
config X86_POWERNOW_K6
|
|
tristate "AMD Mobile K6-2/K6-3 PowerNow!"
|
|
select CPU_FREQ_TABLE
|
|
depends on X86_32
|
|
help
|
|
This adds the CPUFreq driver for mobile AMD K6-2+ and mobile
|
|
AMD K6-3+ processors.
|
|
|
|
For details, take a look at <file:Documentation/cpu-freq/>.
|
|
|
|
If in doubt, say N.
|
|
|
|
config X86_POWERNOW_K7
|
|
tristate "AMD Mobile Athlon/Duron PowerNow!"
|
|
select CPU_FREQ_TABLE
|
|
depends on X86_32
|
|
help
|
|
This adds the CPUFreq driver for mobile AMD K7 mobile processors.
|
|
|
|
For details, take a look at <file:Documentation/cpu-freq/>.
|
|
|
|
If in doubt, say N.
|
|
|
|
config X86_POWERNOW_K7_ACPI
|
|
bool
|
|
depends on X86_POWERNOW_K7 && ACPI_PROCESSOR
|
|
depends on !(X86_POWERNOW_K7 = y && ACPI_PROCESSOR = m)
|
|
depends on X86_32
|
|
default y
|
|
|
|
config X86_POWERNOW_K8
|
|
tristate "AMD Opteron/Athlon64 PowerNow!"
|
|
select CPU_FREQ_TABLE
|
|
depends on ACPI && ACPI_PROCESSOR
|
|
help
|
|
This adds the CPUFreq driver for K8/K10 Opteron/Athlon64 processors.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called powernow-k8.
|
|
|
|
For details, take a look at <file:Documentation/cpu-freq/>.
|
|
|
|
config X86_GX_SUSPMOD
|
|
tristate "Cyrix MediaGX/NatSemi Geode Suspend Modulation"
|
|
depends on X86_32 && PCI
|
|
help
|
|
This add the CPUFreq driver for NatSemi Geode processors which
|
|
support suspend modulation.
|
|
|
|
For details, take a look at <file:Documentation/cpu-freq/>.
|
|
|
|
If in doubt, say N.
|
|
|
|
config X86_SPEEDSTEP_CENTRINO
|
|
tristate "Intel Enhanced SpeedStep (deprecated)"
|
|
select CPU_FREQ_TABLE
|
|
select X86_SPEEDSTEP_CENTRINO_TABLE if X86_32
|
|
depends on X86_32 || (X86_64 && ACPI_PROCESSOR)
|
|
help
|
|
This is deprecated and this functionality is now merged into
|
|
acpi_cpufreq (X86_ACPI_CPUFREQ). Use that driver instead of
|
|
speedstep_centrino.
|
|
This adds the CPUFreq driver for Enhanced SpeedStep enabled
|
|
mobile CPUs. This means Intel Pentium M (Centrino) CPUs
|
|
or 64bit enabled Intel Xeons.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called speedstep-centrino.
|
|
|
|
For details, take a look at <file:Documentation/cpu-freq/>.
|
|
|
|
If in doubt, say N.
|
|
|
|
config X86_SPEEDSTEP_CENTRINO_TABLE
|
|
bool "Built-in tables for Banias CPUs"
|
|
depends on X86_32 && X86_SPEEDSTEP_CENTRINO
|
|
default y
|
|
help
|
|
Use built-in tables for Banias CPUs if ACPI encoding
|
|
is not available.
|
|
|
|
If in doubt, say N.
|
|
|
|
config X86_SPEEDSTEP_ICH
|
|
tristate "Intel Speedstep on ICH-M chipsets (ioport interface)"
|
|
select CPU_FREQ_TABLE
|
|
depends on X86_32
|
|
help
|
|
This adds the CPUFreq driver for certain mobile Intel Pentium III
|
|
(Coppermine), all mobile Intel Pentium III-M (Tualatin) and all
|
|
mobile Intel Pentium 4 P4-M on systems which have an Intel ICH2,
|
|
ICH3 or ICH4 southbridge.
|
|
|
|
For details, take a look at <file:Documentation/cpu-freq/>.
|
|
|
|
If in doubt, say N.
|
|
|
|
config X86_SPEEDSTEP_SMI
|
|
tristate "Intel SpeedStep on 440BX/ZX/MX chipsets (SMI interface)"
|
|
select CPU_FREQ_TABLE
|
|
depends on X86_32 && EXPERIMENTAL
|
|
help
|
|
This adds the CPUFreq driver for certain mobile Intel Pentium III
|
|
(Coppermine), all mobile Intel Pentium III-M (Tualatin)
|
|
on systems which have an Intel 440BX/ZX/MX southbridge.
|
|
|
|
For details, take a look at <file:Documentation/cpu-freq/>.
|
|
|
|
If in doubt, say N.
|
|
|
|
config X86_P4_CLOCKMOD
|
|
tristate "Intel Pentium 4 clock modulation"
|
|
select CPU_FREQ_TABLE
|
|
help
|
|
This adds the CPUFreq driver for Intel Pentium 4 / XEON
|
|
processors. When enabled it will lower CPU temperature by skipping
|
|
clocks.
|
|
|
|
This driver should be only used in exceptional
|
|
circumstances when very low power is needed because it causes severe
|
|
slowdowns and noticeable latencies. Normally Speedstep should be used
|
|
instead.
|
|
|
|
To compile this driver as a module, choose M here: the
|
|
module will be called p4-clockmod.
|
|
|
|
For details, take a look at <file:Documentation/cpu-freq/>.
|
|
|
|
Unless you are absolutely sure say N.
|
|
|
|
config X86_CPUFREQ_NFORCE2
|
|
tristate "nVidia nForce2 FSB changing"
|
|
depends on X86_32 && EXPERIMENTAL
|
|
help
|
|
This adds the CPUFreq driver for FSB changing on nVidia nForce2
|
|
platforms.
|
|
|
|
For details, take a look at <file:Documentation/cpu-freq/>.
|
|
|
|
If in doubt, say N.
|
|
|
|
config X86_LONGRUN
|
|
tristate "Transmeta LongRun"
|
|
depends on X86_32
|
|
help
|
|
This adds the CPUFreq driver for Transmeta Crusoe and Efficeon processors
|
|
which support LongRun.
|
|
|
|
For details, take a look at <file:Documentation/cpu-freq/>.
|
|
|
|
If in doubt, say N.
|
|
|
|
config X86_LONGHAUL
|
|
tristate "VIA Cyrix III Longhaul"
|
|
select CPU_FREQ_TABLE
|
|
depends on X86_32 && ACPI_PROCESSOR
|
|
help
|
|
This adds the CPUFreq driver for VIA Samuel/CyrixIII,
|
|
VIA Cyrix Samuel/C3, VIA Cyrix Ezra and VIA Cyrix Ezra-T
|
|
processors.
|
|
|
|
For details, take a look at <file:Documentation/cpu-freq/>.
|
|
|
|
If in doubt, say N.
|
|
|
|
config X86_E_POWERSAVER
|
|
tristate "VIA C7 Enhanced PowerSaver (DANGEROUS)"
|
|
select CPU_FREQ_TABLE
|
|
depends on X86_32 && EXPERIMENTAL
|
|
help
|
|
This adds the CPUFreq driver for VIA C7 processors. However, this driver
|
|
does not have any safeguards to prevent operating the CPU out of spec
|
|
and is thus considered dangerous. Please use the regular ACPI cpufreq
|
|
driver, enabled by CONFIG_X86_ACPI_CPUFREQ.
|
|
|
|
If in doubt, say N.
|
|
|
|
comment "shared options"
|
|
|
|
config X86_SPEEDSTEP_LIB
|
|
tristate
|
|
default (X86_SPEEDSTEP_ICH || X86_SPEEDSTEP_SMI || X86_P4_CLOCKMOD)
|
|
|
|
config X86_SPEEDSTEP_RELAXED_CAP_CHECK
|
|
bool "Relaxed speedstep capability checks"
|
|
depends on X86_32 && (X86_SPEEDSTEP_SMI || X86_SPEEDSTEP_ICH)
|
|
help
|
|
Don't perform all checks for a speedstep capable system which would
|
|
normally be done. Some ancient or strange systems, though speedstep
|
|
capable, don't always indicate that they are speedstep capable. This
|
|
option lets the probing code bypass some of those checks if the
|
|
parameter "relaxed_check=1" is passed to the module.
|
|
|