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| author | Len Brown <len.brown@intel.com> | 2010-03-08 22:07:30 +0300 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2010-05-28 22:26:20 +0400 |
| commit | 2671717265ae6e720a9ba5f13fbec3a718983b65 (patch) | |
| tree | 16a3c688e297a9a69421640410f7140a6114a8e3 /drivers/idle/Kconfig | |
| parent | 02cf4f9808382af7265cafc33dc86ec5875526aa (diff) | |
| download | linux-2671717265ae6e720a9ba5f13fbec3a718983b65.tar.xz | |
intel_idle: native hardware cpuidle driver for latest Intel processors
This EXPERIMENTAL driver supersedes acpi_idle on
Intel Atom Processors, Intel Core i3/i5/i7 Processors
and associated Intel Xeon processors.
It does not support the Intel Core2 processor or earlier.
For kernels configured with ACPI, CONFIG_INTEL_IDLE=y
allows intel_idle to probe before the ACPI processor driver.
Booting with "intel_idle.max_cstate=0" disables intel_idle
and the system will fall back on ACPI's "acpi_idle".
Typical Linux distributions load ACPI processor module early,
making CONFIG_INTEL_IDLE=m not easily useful on ACPI platforms.
intel_idle probes all processors at module_init time.
Processors that are hot-added later will be limited
to using C1 in idle.
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/idle/Kconfig')
| -rw-r--r-- | drivers/idle/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/idle/Kconfig b/drivers/idle/Kconfig index f15e90a453d1..fb5c5186d4aa 100644 --- a/drivers/idle/Kconfig +++ b/drivers/idle/Kconfig @@ -1,3 +1,14 @@ +config INTEL_IDLE + tristate "Cpuidle Driver for Intel Processors" + depends on CPU_IDLE + depends on X86 + depends on CPU_SUP_INTEL + depends on EXPERIMENTAL + help + Enable intel_idle, a cpuidle driver that includes knowledge of + native Intel hardware idle features. The acpi_idle driver + can be configured at the same time, in order to handle + processors intel_idle does not support. menu "Memory power savings" depends on X86_64 |