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Diffstat (limited to 'arch/x86/kernel/cpufreq/Kconfig')
-rw-r--r-- | arch/x86/kernel/cpufreq/Kconfig | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpufreq/Kconfig b/arch/x86/kernel/cpufreq/Kconfig new file mode 100644 index 00000000000..a3fd51926cb --- /dev/null +++ b/arch/x86/kernel/cpufreq/Kconfig @@ -0,0 +1,108 @@ +# +# CPU Frequency scaling +# + +menu "CPU Frequency scaling" + +source "drivers/cpufreq/Kconfig" + +if CPU_FREQ + +comment "CPUFreq processor drivers" + +config X86_POWERNOW_K8 + tristate "AMD Opteron/Athlon64 PowerNow!" + select CPU_FREQ_TABLE + 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. + +config X86_POWERNOW_K8_ACPI + bool + depends on X86_POWERNOW_K8 && ACPI_PROCESSOR + depends on !(X86_POWERNOW_K8 = y && ACPI_PROCESSOR = m) + default y + +config X86_SPEEDSTEP_CENTRINO + tristate "Intel Enhanced SpeedStep (deprecated)" + select CPU_FREQ_TABLE + depends on 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_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. + +comment "shared options" + +config X86_ACPI_CPUFREQ_PROC_INTF + bool "/proc/acpi/processor/../performance interface (deprecated)" + depends on PROC_FS + depends on X86_ACPI_CPUFREQ || X86_POWERNOW_K8_ACPI + help + This enables the deprecated /proc/acpi/processor/../performance + interface. While it is helpful for debugging, the generic, + cross-architecture cpufreq interfaces should be used. + + If in doubt, say N. + +config X86_P4_CLOCKMOD + tristate "Intel Pentium 4 clock modulation" + depends on EMBEDDED + select CPU_FREQ_TABLE + help + This adds the clock modulation 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_SPEEDSTEP_LIB + tristate + default X86_P4_CLOCKMOD + +endif + +endmenu |