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cpufreq / intel_pstate: Change to disallow module build

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Load order is important in order for intel_pstate to take over as the
default scaling driver from acpi-cpufreq.

If both are built-in, acpi-cpufreq uses late_initcall() and
intel_pstate uses device_initcall() so it will be able to register as
the scaling before acpi-cpufreq for the processors supported by
intel_pstate.

If acpi-cpufreq is built as a module then intel_pstate still gets
first option to become the scaling driver.

Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Dirk Brandewie 2013-02-14 22:55:34 +01:00 committed by Rafael J. Wysocki
parent 191e5edf96
commit da0d9fda37
1 changed files with 1 additions and 6 deletions
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7
drivers/cpufreq/Kconfig.x86
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@ -3,7 +3,7 @@
# #
config X86_INTEL_PSTATE config X86_INTEL_PSTATE
tristate "Intel P state control" bool "Intel P state control"
depends on X86 depends on X86
help help
This driver provides a P state for Intel core processors. This driver provides a P state for Intel core processors.
@ -13,11 +13,6 @@ config X86_INTEL_PSTATE
When this driver is enabled it will become the perferred When this driver is enabled it will become the perferred
scaling driver for Sandy bridge processors. scaling driver for Sandy bridge processors.
Note: This driver should be built with the same settings as
the other scaling drivers configured into the system
(module/built-in) in order for the driver to register itself
as the scaling driver on the system.
If in doubt, say N. If in doubt, say N.
config X86_PCC_CPUFREQ config X86_PCC_CPUFREQ