Merge branch 'for-rmk/perf' of git://git.kernel.org/pub/scm/linux/kernel/git/will...

The most noticeable change is adding user unwinding support, which
relies on libunwind in the perf tool for ARM, but there is also a
group validation cleanup following on from fixes made in 3.11.

diff --combined arch/arm/Kconfig
index 22efc5d9c952dc082b0df0754c58ca90b35b05ab,899d0c6ec2c516c06e585ec0de4e0df449c6ae7b..3917dd4f270c515c11c8fecdc2d12540f4ccee86
--- 1/arch/arm/Kconfig
--- 2/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@@ -51,6 -51,8 +51,8 @@@ config AR
        select HAVE_MOD_ARCH_SPECIFIC if ARM_UNWIND
        select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
        select HAVE_PERF_EVENTS
+       select HAVE_PERF_REGS
+       select HAVE_PERF_USER_STACK_DUMP
        select HAVE_REGS_AND_STACK_ACCESS_API
        select HAVE_SYSCALL_TRACEPOINTS
        select HAVE_UID16
@@@ -1549,32 -1551,6 +1551,32 @@@ config MCP
          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