rcu: Implement lockdep_rcu_enabled for !CONFIG_DEBUG_LOCK_ALLOC

Provide an implementation for debug_lockdep_rcu_enabled() when CONFIG_DEBUG_LOCK_ALLOC is not enabled. This allows code to check if rcu lockdep debugging is available without needing an extra check if CONFIG_DEBUG_LOCK_ALLOC is enabled. Signed-off-by: John Ogness <[email protected]> Signed-off-by: Paul E. McKenney <[email protected]>
majek · Nov 9, 2022 · f733615 · f733615
1 parent e29a491
commit f733615
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
@@ -340,6 +340,11 @@ static inline int rcu_read_lock_any_held(void)
 	return !preemptible();
 }
 
+static inline int debug_lockdep_rcu_enabled(void)
+{
+	return 0;
+}
+
 #endif /* #else #ifdef CONFIG_DEBUG_LOCK_ALLOC */
 
 #ifdef CONFIG_PROVE_RCU