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-rw-r--r--arch/x86_64/kernel/cpufreq/Kconfig19
-rw-r--r--drivers/cpufreq/Kconfig61
2 files changed, 58 insertions, 22 deletions
diff --git a/arch/x86_64/kernel/cpufreq/Kconfig b/arch/x86_64/kernel/cpufreq/Kconfig
index 40acb67fb882..c0749d2479f5 100644
--- a/arch/x86_64/kernel/cpufreq/Kconfig
+++ b/arch/x86_64/kernel/cpufreq/Kconfig
@@ -16,6 +16,9 @@ config X86_POWERNOW_K8
help
This adds the CPUFreq driver for mobile AMD 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/>.
If in doubt, say N.
@@ -38,6 +41,9 @@ config X86_SPEEDSTEP_CENTRINO
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.
@@ -55,6 +61,9 @@ config X86_ACPI_CPUFREQ
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.
@@ -62,7 +71,7 @@ config X86_ACPI_CPUFREQ
comment "shared options"
config X86_ACPI_CPUFREQ_PROC_INTF
- bool "/proc/acpi/processor/../performance interface (deprecated)"
+ bool "/proc/acpi/processor/../performance interface (deprecated)"
depends on PROC_FS
depends on X86_ACPI_CPUFREQ || X86_SPEEDSTEP_CENTRINO_ACPI || X86_POWERNOW_K8_ACPI
help
@@ -86,16 +95,18 @@ config X86_P4_CLOCKMOD
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_SPEEDSTEP_LIB
- tristate
- default X86_P4_CLOCKMOD
+ tristate
+ default X86_P4_CLOCKMOD
endif
endmenu
-
diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
index d155e81b5c97..993fa7b89253 100644
--- a/drivers/cpufreq/Kconfig
+++ b/drivers/cpufreq/Kconfig
@@ -9,6 +9,9 @@ config CPU_FREQ
clock speed, you need to either enable a dynamic cpufreq governor
(see below) after boot, or use a userspace tool.
+ To compile this driver as a module, choose M here: the
+ module will be called cpufreq.
+
For details, take a look at <file:Documentation/cpu-freq>.
If in doubt, say N.
@@ -16,7 +19,7 @@ config CPU_FREQ
if CPU_FREQ
config CPU_FREQ_TABLE
- tristate
+ tristate
config CPU_FREQ_DEBUG
bool "Enable CPUfreq debugging"
@@ -32,19 +35,26 @@ config CPU_FREQ_DEBUG
4 to activate CPUfreq governor debugging
config CPU_FREQ_STAT
- tristate "CPU frequency translation statistics"
- select CPU_FREQ_TABLE
- default y
- help
- This driver exports CPU frequency statistics information through sysfs
- file system
+ tristate "CPU frequency translation statistics"
+ select CPU_FREQ_TABLE
+ default y
+ help
+ This driver exports CPU frequency statistics information through sysfs
+ file system.
+
+ To compile this driver as a module, choose M here: the
+ module will be called cpufreq_stats.
+
+ If in doubt, say N.
config CPU_FREQ_STAT_DETAILS
- bool "CPU frequency translation statistics details"
- depends on CPU_FREQ_STAT
- help
- This will show detail CPU frequency translation table in sysfs file
- system
+ bool "CPU frequency translation statistics details"
+ depends on CPU_FREQ_STAT
+ help
+ This will show detail CPU frequency translation table in sysfs file
+ system.
+
+ If in doubt, say N.
# Note that it is not currently possible to set the other governors (such as ondemand)
# as the default, since if they fail to initialise, cpufreq will be
@@ -78,29 +88,38 @@ config CPU_FREQ_DEFAULT_GOV_USERSPACE
endchoice
config CPU_FREQ_GOV_PERFORMANCE
- tristate "'performance' governor"
- help
+ tristate "'performance' governor"
+ help
This cpufreq governor sets the frequency statically to the
highest available CPU frequency.
+ To compile this driver as a module, choose M here: the
+ module will be called cpufreq_performance.
+
If in doubt, say Y.
config CPU_FREQ_GOV_POWERSAVE
- tristate "'powersave' governor"
- help
+ tristate "'powersave' governor"
+ help
This cpufreq governor sets the frequency statically to the
lowest available CPU frequency.
+ To compile this driver as a module, choose M here: the
+ module will be called cpufreq_powersave.
+
If in doubt, say Y.
config CPU_FREQ_GOV_USERSPACE
- tristate "'userspace' governor for userspace frequency scaling"
- help
+ tristate "'userspace' governor for userspace frequency scaling"
+ help
Enable this cpufreq governor when you either want to set the
CPU frequency manually or when an userspace program shall
be able to set the CPU dynamically, like on LART
<http://www.lartmaker.nl/>.
+ To compile this driver as a module, choose M here: the
+ module will be called cpufreq_userspace.
+
For details, take a look at <file:Documentation/cpu-freq/>.
If in doubt, say Y.
@@ -116,6 +135,9 @@ config CPU_FREQ_GOV_ONDEMAND
do fast frequency switching (i.e, very low latency frequency
transitions).
+ To compile this driver as a module, choose M here: the
+ module will be called cpufreq_ondemand.
+
For details, take a look at linux/Documentation/cpu-freq.
If in doubt, say N.
@@ -136,6 +158,9 @@ config CPU_FREQ_GOV_CONSERVATIVE
step-by-step latency issues between the minimum and maximum frequency
transitions in the CPU) you will probably want to use this governor.
+ To compile this driver as a module, choose M here: the
+ module will be called cpufreq_conservative.
+
For details, take a look at linux/Documentation/cpu-freq.
If in doubt, say N.