diff options
| -rw-r--r-- | kernel/rcu/tree.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 0b760c1369f7..15301ed19da6 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -2662,6 +2662,15 @@ void rcu_check_callbacks(int user) rcu_bh_qs(); } rcu_preempt_check_callbacks(); + /* The load-acquire pairs with the store-release setting to true. */ + if (smp_load_acquire(this_cpu_ptr(&rcu_dynticks.rcu_urgent_qs))) { + /* Idle and userspace execution already are quiescent states. */ + if (!rcu_is_cpu_rrupt_from_idle() && !user) { + set_tsk_need_resched(current); + set_preempt_need_resched(); + } + __this_cpu_write(rcu_dynticks.rcu_urgent_qs, false); + } if (rcu_pending()) invoke_rcu_core(); |