Merge branch 'iks_for_rmk' of git://git.linaro.org/people/nico/linux into devel-stable

Nicolas Pitre writes:

This is the first part of the patch series adding IKS (In-Kernel
Switcher) support for big.LITTLE system architectures.  This consists of
the core patches only.  Extra patches to come later will introduce
various optimizations and tracing support.

Those patches were posted on the list a while ago here:

   http://news.gmane.org/group/gmane.linux.ports.arm.kernel/thread=253942

1 files changed, 26 insertions, 0 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 3f7714d8d2d2..b3135378ac39 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1549,6 +1549,32 @@ config MCPM
           for (multi-)cluster based systems, such as big.LITTLE based
           systems.
 
+config BIG_LITTLE
+        bool "big.LITTLE support (Experimental)"
+        depends on CPU_V7 && SMP
+        select MCPM
+        help
+          This option enables support selections for the big.LITTLE
+          system architecture.
+
+config BL_SWITCHER
+        bool "big.LITTLE switcher support"
+        depends on BIG_LITTLE && MCPM && HOTPLUG_CPU
+        select CPU_PM
+        select ARM_CPU_SUSPEND
+        help
+          The big.LITTLE "switcher" provides the core functionality to
+          transparently handle transition between a cluster of A15's
+          and a cluster of A7's in a big.LITTLE system.
+
+config BL_SWITCHER_DUMMY_IF
+        tristate "Simple big.LITTLE switcher user interface"
+        depends on BL_SWITCHER && DEBUG_KERNEL
+        help
+          This is a simple and dummy char dev interface to control
+          the big.LITTLE switcher core code.  It is meant for
+          debugging purposes only.
+
 choice
         prompt "Memory split"
         default VMSPLIT_3G