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authorJacob Pan <jacob.jun.pan@linux.intel.com>2013-01-21 16:37:57 +0400
committerZhang Rui <rui.zhang@intel.com>2013-02-06 09:45:00 +0400
commitd6d71ee4a14ae602db343ec48c491851d7ec5267 (patch)
tree91522b3d9f9d5d63cfe47af65dab2457d601129c /drivers/thermal/Kconfig
parent29c6fb7be156ae3c0e202c3903087ab6e57d3ad3 (diff)
downloadlinux-d6d71ee4a14ae602db343ec48c491851d7ec5267.tar.xz
PM: Introduce Intel PowerClamp Driver
Intel PowerClamp driver performs synchronized idle injection across all online CPUs. The goal is to maintain a given package level C-state ratio. Compared to other throttling methods already exist in the kernel, such as ACPI PAD (taking CPUs offline) and clock modulation, this is often more efficient in terms of performance per watt. Please refer to Documentation/thermal/intel_powerclamp.txt for more details. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Diffstat (limited to 'drivers/thermal/Kconfig')
-rw-r--r--drivers/thermal/Kconfig10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index c31b9e4451a3..faf38c522fa8 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -131,4 +131,14 @@ config DB8500_CPUFREQ_COOLING
bound cpufreq cooling device turns active to set CPU frequency low to
cool down the CPU.
+config INTEL_POWERCLAMP
+ tristate "Intel PowerClamp idle injection driver"
+ depends on THERMAL
+ depends on X86
+ depends on CPU_SUP_INTEL
+ help
+ Enable this to enable Intel PowerClamp idle injection driver. This
+ enforce idle time which results in more package C-state residency. The
+ user interface is exposed via generic thermal framework.
+
endif