diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index b72d7d132072..968371ab223a 100644
--- a/arch/x86/kernel/process_32.c
+++ b/arch/x86/kernel/process_32.c
@@ -285,7 +285,7 @@ static void mwait_idle(void)
 	mwait_idle_with_hints(0, 0);
 }
 
-static int mwait_usable(const struct cpuinfo_x86 *c)
+static int __cpuinit mwait_usable(const struct cpuinfo_x86 *c)
 {
 	if (force_mwait)
 		return 1;
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index b4c470658a8a..137a86171c39 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -281,7 +281,7 @@ static void mwait_idle(void)
 }
 
 
-static int mwait_usable(const struct cpuinfo_x86 *c)
+static int __cpuinit mwait_usable(const struct cpuinfo_x86 *c)
 {
 	if (force_mwait)
 		return 1;