diff options
| -rw-r--r-- | include/linux/srcu.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/linux/srcu.h b/include/linux/srcu.h index 4e0a3d41dae..d4b12443b2e 100644 --- a/include/linux/srcu.h +++ b/include/linux/srcu.h | |||
| @@ -84,6 +84,9 @@ long srcu_batches_completed(struct srcu_struct *sp); | |||
| 84 | * this assumes we are in an SRCU read-side critical section unless it can | 84 | * this assumes we are in an SRCU read-side critical section unless it can |
| 85 | * prove otherwise. | 85 | * prove otherwise. |
| 86 | * | 86 | * |
| 87 | * Checks debug_lockdep_rcu_enabled() to prevent false positives during boot | ||
| 88 | * and while lockdep is disabled. | ||
| 89 | * | ||
| 87 | * Note that if the CPU is in the idle loop from an RCU point of view | 90 | * Note that if the CPU is in the idle loop from an RCU point of view |
| 88 | * (ie: that we are in the section between rcu_idle_enter() and | 91 | * (ie: that we are in the section between rcu_idle_enter() and |
| 89 | * rcu_idle_exit()) then srcu_read_lock_held() returns false even if | 92 | * rcu_idle_exit()) then srcu_read_lock_held() returns false even if |
| @@ -102,7 +105,7 @@ static inline int srcu_read_lock_held(struct srcu_struct *sp) | |||
| 102 | if (rcu_is_cpu_idle()) | 105 | if (rcu_is_cpu_idle()) |
| 103 | return 0; | 106 | return 0; |
| 104 | 107 | ||
| 105 | if (!debug_locks) | 108 | if (!debug_lockdep_rcu_enabled()) |
| 106 | return 1; | 109 | return 1; |
| 107 | 110 | ||
| 108 | return lock_is_held(&sp->dep_map); | 111 | return lock_is_held(&sp->dep_map); |