rcu: Make rcu node arrays static const char * const

Those two arrays are being passed to lockdep_init_map(), which expects
const char *, and are stored in lockdep_map the same way.

Cc: Dipankar Sarma <dipankar@in.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

1 files changed, 10 insertions, 8 deletions

diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 625d0b0cd75a..ebd99af2214e 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -3564,14 +3564,16 @@ static void __init rcu_init_levelspread(struct rcu_state *rsp)
 static void __init rcu_init_one(struct rcu_state *rsp,
                 struct rcu_data __percpu *rda)
 {
-        static char *buf[] = { "rcu_node_0",
-                               "rcu_node_1",
-                               "rcu_node_2",
-                               "rcu_node_3" };  /* Match MAX_RCU_LVLS */
-        static char *fqs[] = { "rcu_node_fqs_0",
-                               "rcu_node_fqs_1",
-                               "rcu_node_fqs_2",
-                               "rcu_node_fqs_3" };  /* Match MAX_RCU_LVLS */
+        static const char * const buf[] = {
+                "rcu_node_0",
+                "rcu_node_1",
+                "rcu_node_2",
+                "rcu_node_3" };  /* Match MAX_RCU_LVLS */
+        static const char * const fqs[] = {
+                "rcu_node_fqs_0",
+                "rcu_node_fqs_1",
+                "rcu_node_fqs_2",
+                "rcu_node_fqs_3" };  /* Match MAX_RCU_LVLS */
         static u8 fl_mask = 0x1;
         int cpustride = 1;
         int i;