summaryrefslogtreecommitdiffstats
path: root/arch/x86_64/kernel/cpufreq
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/x86_64/kernel/cpufreq
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/x86_64/kernel/cpufreq')
-rw-r--r--arch/x86_64/kernel/cpufreq/Kconfig96
-rw-r--r--arch/x86_64/kernel/cpufreq/Makefile17
2 files changed, 113 insertions, 0 deletions
diff --git a/arch/x86_64/kernel/cpufreq/Kconfig b/arch/x86_64/kernel/cpufreq/Kconfig
new file mode 100644
index 00000000000..81f1562e539
--- /dev/null
+++ b/arch/x86_64/kernel/cpufreq/Kconfig
@@ -0,0 +1,96 @@
+#
+# 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.
+
+ 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"
+ select CPU_FREQ_TABLE
+ depends on ACPI_PROCESSOR
+ help
+ This adds the CPUFreq driver for Enhanced SpeedStep enabled
+ mobile CPUs. This means Intel Pentium M (Centrino) CPUs
+ or 64bit enabled Intel Xeons.
+
+ For details, take a look at <file:Documentation/cpu-freq/>.
+
+ If in doubt, say N.
+
+config X86_SPEEDSTEP_CENTRINO_ACPI
+ bool
+ depends on X86_SPEEDSTEP_CENTRINO
+ default y
+
+config X86_ACPI_CPUFREQ
+ tristate "ACPI Processor P-States driver"
+ 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.
+
+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_SPEEDSTEP_CENTRINO_ACPI || 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
+ 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.
+
+ 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
+
diff --git a/arch/x86_64/kernel/cpufreq/Makefile b/arch/x86_64/kernel/cpufreq/Makefile
new file mode 100644
index 00000000000..d8b59387922
--- /dev/null
+++ b/arch/x86_64/kernel/cpufreq/Makefile
@@ -0,0 +1,17 @@
+#
+# Reuse the i386 cpufreq drivers
+#
+
+SRCDIR := ../../../i386/kernel/cpu/cpufreq
+
+obj-$(CONFIG_X86_POWERNOW_K8) += powernow-k8.o
+obj-$(CONFIG_X86_SPEEDSTEP_CENTRINO) += speedstep-centrino.o
+obj-$(CONFIG_X86_ACPI_CPUFREQ) += acpi-cpufreq.o
+obj-$(CONFIG_X86_P4_CLOCKMOD) += p4-clockmod.o
+obj-$(CONFIG_X86_SPEEDSTEP_LIB) += speedstep-lib.o
+
+powernow-k8-objs := ${SRCDIR}/powernow-k8.o
+speedstep-centrino-objs := ${SRCDIR}/speedstep-centrino.o
+acpi-cpufreq-objs := ${SRCDIR}/acpi-cpufreq.o
+p4-clockmod-objs := ${SRCDIR}/p4-clockmod.o
+speedstep-lib-objs := ${SRCDIR}/speedstep-lib.o