rcu: Introduce lockdep-based checking to RCU read-side primitives

[safe/jmp/linux-2.6] / kernel / rcutorture.c

diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index adda92b..5f43f30 100644 (file)
--- a/kernel/rcutorture.c
+++ b/kernel/rcutorture.c
@@ -796,7 +796,11 @@ static void rcu_torture_timer(unsigned long unused)
 
        idx = cur_ops->readlock();
        completed = cur_ops->completed();
-       p = rcu_dereference(rcu_torture_current);
+       p = rcu_dereference_check(rcu_torture_current,
+                                 rcu_read_lock_held() ||
+                                 rcu_read_lock_bh_held() ||
+                                 rcu_read_lock_sched_held() ||
+                                 srcu_read_lock_held(&srcu_ctl));
        if (p == NULL) {
                /* Leave because rcu_torture_writer is not yet underway */
                cur_ops->readunlock(idx);
@@ -853,7 +857,11 @@ rcu_torture_reader(void *arg)
                }
                idx = cur_ops->readlock();
                completed = cur_ops->completed();
-               p = rcu_dereference(rcu_torture_current);
+               p = rcu_dereference_check(rcu_torture_current,
+                                         rcu_read_lock_held() ||
+                                         rcu_read_lock_bh_held() ||
+                                         rcu_read_lock_sched_held() ||
+                                         srcu_read_lock_held(&srcu_ctl));
                if (p == NULL) {
                        /* Wait for rcu_torture_writer to get underway */
                        cur_ops->readunlock(idx);