Ingo says:
 "If we do a separate file we should have it in arch/x86/events/Kconfig
  (not in arch/x86/Kconfig.perf), and also move some of the other bits,
  such as PERF_EVENTS_AMD_POWER?"
Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
        def_bool y
        depends on X86_MCE_INTEL
 
-source "arch/x86/Kconfig.perf"
+source "arch/x86/events/Kconfig"
 
 config X86_LEGACY_VM86
        bool "Legacy VM86 support"
        def_bool y
        depends on MICROCODE
 
-config PERF_EVENTS_AMD_POWER
-       depends on PERF_EVENTS && CPU_SUP_AMD
-       tristate "AMD Processor Power Reporting Mechanism"
-       ---help---
-         Provide power reporting mechanism support for AMD processors.
-         Currently, it leverages X86_FEATURE_ACC_POWER
-         (CPUID Fn8000_0007_EDX[12]) interface to calculate the
-         average power consumption on Family 15h processors.
-
 config X86_MSR
        tristate "/dev/cpu/*/msr - Model-specific register support"
        ---help---
 
        Include support for Intel cstate performance events for power
        monitoring on modern processors.
 
+config PERF_EVENTS_AMD_POWER
+       depends on PERF_EVENTS && CPU_SUP_AMD
+       tristate "AMD Processor Power Reporting Mechanism"
+       ---help---
+         Provide power reporting mechanism support for AMD processors.
+         Currently, it leverages X86_FEATURE_ACC_POWER
+         (CPUID Fn8000_0007_EDX[12]) interface to calculate the
+         average power consumption on Family 15h processors.
+
 endmenu