[PATCH] Move PREEMPT_NOTIFIERS into an always-included Kconfig

[Avi Kivity <avi@qumranet.com>]

Kconfig.preempt is not included on some archs (for example, m68k).  On those
archs, the Kconfig machinery complains that KVM selects an undefined symbol
PREEMPT_NOTIFIERS (which lives in Kconfig.preempt).  Pointing out that this
is a Kconfig bug does not seem to silence the error, so move the offending
symbol into a Kconfig file which is included by everyone.

Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Avi Kivity <avi@qumranet.com>

diff --git a/init/Kconfig b/init/Kconfig
index 96b5459..aae3928 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -667,3 +667,6 @@ config STOP_MACHINE
 	  Need stop_machine() primitive.
 
 source "block/Kconfig"
+
+config PREEMPT_NOTIFIERS
+	bool
diff --git a/kernel/Kconfig.preempt b/kernel/Kconfig.preempt
index 6b06663..c64ce9c 100644
--- a/kernel/Kconfig.preempt
+++ b/kernel/Kconfig.preempt
@@ -63,6 +63,3 @@ config PREEMPT_BKL
 	  Say Y here if you are building a kernel for a desktop system.
 	  Say N if you are unsure.
 
-config PREEMPT_NOTIFIERS
-	bool
-