diff --git a/[refs] b/[refs]
index dde82305328a..5140ba8b128a 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: fd78f11790c37e2165733699f50450500e63a7b3
+refs/heads/master: 4cef0c61380888af99b054937ed391fb28757836
diff --git a/trunk/kernel/sched.c b/trunk/kernel/sched.c
index d129e560cc0d..c0c60c926d5e 100644
--- a/trunk/kernel/sched.c
+++ b/trunk/kernel/sched.c
@@ -3980,12 +3980,12 @@ asmlinkage long sys_sched_setaffinity(pid_t pid, unsigned int len,
  * method, such as ACPI for e.g.
  */
 
-cpumask_t cpu_present_map;
+cpumask_t cpu_present_map __read_mostly;
 EXPORT_SYMBOL(cpu_present_map);
 
 #ifndef CONFIG_SMP
-cpumask_t cpu_online_map = CPU_MASK_ALL;
-cpumask_t cpu_possible_map = CPU_MASK_ALL;
+cpumask_t cpu_online_map __read_mostly = CPU_MASK_ALL;
+cpumask_t cpu_possible_map __read_mostly = CPU_MASK_ALL;
 #endif
 
 long sched_getaffinity(pid_t pid, cpumask_t *mask)