diff options
Diffstat (limited to 'kernel/rcu/tasks.h')
| -rw-r--r-- | kernel/rcu/tasks.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h index 99cf3a13954c..b43320b149d2 100644 --- a/kernel/rcu/tasks.h +++ b/kernel/rcu/tasks.h @@ -950,6 +950,9 @@ static void rcu_tasks_be_rude(struct work_struct *work) // Wait for one rude RCU-tasks grace period. static void rcu_tasks_rude_wait_gp(struct rcu_tasks *rtp) { + if (num_online_cpus() <= 1) + return; // Fastpath for only one CPU. + rtp->n_ipis += cpumask_weight(cpu_online_mask); schedule_on_each_cpu(rcu_tasks_be_rude); } |