diff --git a/kernel/rcupdate.c b/kernel/rcupdate.c
index a66d4d1..11c815c 100644
--- a/kernel/rcupdate.c
+++ b/kernel/rcupdate.c
@@ -75,9 +75,9 @@ DEFINE_PER_CPU(struct rcu_data, rcu_bh_data) = { 0L };
 
 /* Fake initialization required by compiler */
 static DEFINE_PER_CPU(struct tasklet_struct, rcu_tasklet) = {NULL};
-static int blimit = 10;
-static int qhimark = 10000;
-static int qlowmark = 100;
+static int blimit __read_mostly = 10;
+static int qhimark __read_mostly = 10000;
+static int qlowmark __read_mostly = 100;
 
 static atomic_t rcu_barrier_cpu_count;
 static DEFINE_MUTEX(rcu_barrier_mutex);