Merge remote-tracking branches 'asoc/fix/mtk', 'asoc/fix/psc', 'asoc/fix/pxa', 'asoc...

[firefly-linux-kernel-4.4.55.git] / kernel / rcu / srcu.c

diff --git a/kernel/rcu/srcu.c b/kernel/rcu/srcu.c
index fb33d35ee0b7c0ecdb6df0cb0562050abcc6707b..d3fcb2ec8536724615cbdd5ce5a891cbcc020934 100644 (file)
--- a/kernel/rcu/srcu.c
+++ b/kernel/rcu/srcu.c
@@ -252,14 +252,15 @@ static bool srcu_readers_active_idx_check(struct srcu_struct *sp, int idx)
 }
 
 /**
- * srcu_readers_active - returns approximate number of readers.
+ * srcu_readers_active - returns true if there are readers. and false
+ *                       otherwise
  * @sp: which srcu_struct to count active readers (holding srcu_read_lock).
  *
  * Note that this is not an atomic primitive, and can therefore suffer
  * severe errors when invoked on an active srcu_struct.  That said, it
  * can be useful as an error check at cleanup time.
  */
-static int srcu_readers_active(struct srcu_struct *sp)
+static bool srcu_readers_active(struct srcu_struct *sp)
 {
        int cpu;
        unsigned long sum = 0;
@@ -414,11 +415,11 @@ static void __synchronize_srcu(struct srcu_struct *sp, int trycount)
        struct rcu_head *head = &rcu.head;
        bool done = false;
 
-       rcu_lockdep_assert(!lock_is_held(&sp->dep_map) &&
-                          !lock_is_held(&rcu_bh_lock_map) &&
-                          !lock_is_held(&rcu_lock_map) &&
-                          !lock_is_held(&rcu_sched_lock_map),
-                          "Illegal synchronize_srcu() in same-type SRCU (or RCU) read-side critical section");
+       RCU_LOCKDEP_WARN(lock_is_held(&sp->dep_map) ||
+                        lock_is_held(&rcu_bh_lock_map) ||
+                        lock_is_held(&rcu_lock_map) ||
+                        lock_is_held(&rcu_sched_lock_map),
+                        "Illegal synchronize_srcu() in same-type SRCU (or in RCU) read-side critical section");
 
        might_sleep();
        init_completion(&rcu.completion);