[v2,1/9] rcu/update: Remove useless check for debug_locks
diff mbox series

Message ID 20190712170024.111093-2-joel@joelfernandes.org
State New
Headers show
Series
  • Harden list_for_each_entry_rcu() and family
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Commit Message

Joel Fernandes July 12, 2019, 5 p.m. UTC
In rcu_read_lock_sched_held(), debug_locks can never be true at the
point we check it because we already check debug_locks in
debug_lockdep_rcu_enabled() in the beginning. Remove the check.

Signed-off-by: Joel Fernandes (Google) <joel@joelfernandes.org>
---
 kernel/rcu/update.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

Patch
diff mbox series

diff --git a/kernel/rcu/update.c b/kernel/rcu/update.c
index c3bf44ba42e5..bb961cd89e76 100644
--- a/kernel/rcu/update.c
+++ b/kernel/rcu/update.c
@@ -93,17 +93,13 @@  module_param(rcu_normal_after_boot, int, 0);
  */
 int rcu_read_lock_sched_held(void)
 {
-	int lockdep_opinion = 0;
-
 	if (!debug_lockdep_rcu_enabled())
 		return 1;
 	if (!rcu_is_watching())
 		return 0;
 	if (!rcu_lockdep_current_cpu_online())
 		return 0;
-	if (debug_locks)
-		lockdep_opinion = lock_is_held(&rcu_sched_lock_map);
-	return lockdep_opinion || !preemptible();
+	return lock_is_held(&rcu_sched_lock_map) || !preemptible();
 }
 EXPORT_SYMBOL(rcu_read_lock_sched_held);
 #endif