diff options
Diffstat (limited to 'kernel/rcu/tree_exp.h')
| -rw-r--r-- | kernel/rcu/tree_exp.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/rcu/tree_exp.h b/kernel/rcu/tree_exp.h index 01b6ddeb4f05..a104cf91e6b9 100644 --- a/kernel/rcu/tree_exp.h +++ b/kernel/rcu/tree_exp.h @@ -479,6 +479,7 @@ static void sync_rcu_exp_select_cpus(struct rcu_state *rsp, sync_exp_reset_tree(rsp); trace_rcu_exp_grace_period(rsp->name, rcu_exp_gp_seq_endval(rsp), TPS("select")); + cpus_read_lock(); /* Schedule work for each leaf rcu_node structure. */ rcu_for_each_leaf_node(rsp, rnp) { rnp->exp_need_flush = false; @@ -493,13 +494,11 @@ static void sync_rcu_exp_select_cpus(struct rcu_state *rsp, continue; } INIT_WORK(&rnp->rew.rew_work, sync_rcu_exp_select_node_cpus); - preempt_disable(); cpu = cpumask_next(rnp->grplo - 1, cpu_online_mask); /* If all offline, queue the work on an unbound CPU. */ if (unlikely(cpu > rnp->grphi)) cpu = WORK_CPU_UNBOUND; queue_work_on(cpu, rcu_par_gp_wq, &rnp->rew.rew_work); - preempt_enable(); rnp->exp_need_flush = true; } @@ -507,6 +506,7 @@ static void sync_rcu_exp_select_cpus(struct rcu_state *rsp, rcu_for_each_leaf_node(rsp, rnp) if (rnp->exp_need_flush) flush_work(&rnp->rew.rew_work); + cpus_read_unlock(); } static void synchronize_sched_expedited_wait(struct rcu_state *rsp) |