rcu: Place root rcu_node structure in separate lockdep class

[pandora-kernel.git] / kernel / rcutree.c

diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index d8d9865..705f02a 100644 (file)
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -1647,7 +1647,8 @@ static void __init rcu_init_one(struct rcu_state *rsp)
                cpustride *= rsp->levelspread[i];
                rnp = rsp->level[i];
                for (j = 0; j < rsp->levelcnt[i]; j++, rnp++) {
-                       spin_lock_init(&rnp->lock);
+                       if (rnp != rcu_get_root(rsp))
+                               spin_lock_init(&rnp->lock);
                        rnp->gpnum = 0;
                        rnp->qsmask = 0;
                        rnp->qsmaskinit = 0;
@@ -1670,6 +1671,7 @@ static void __init rcu_init_one(struct rcu_state *rsp)
                        INIT_LIST_HEAD(&rnp->blocked_tasks[1]);
                }
        }
+       spin_lock_init(&rcu_get_root(rsp)->lock);
 }
 
 /*