diff options
| -rw-r--r-- | kernel/rcutree_plugin.h | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h index 3d84dbc113d..42ca5a400ae 100644 --- a/kernel/rcutree_plugin.h +++ b/kernel/rcutree_plugin.h @@ -2009,7 +2009,6 @@ int rcu_needs_cpu(int cpu) */ static void rcu_prepare_for_idle(int cpu) { - int c = 0; unsigned long flags; local_irq_save(flags); @@ -2055,27 +2054,30 @@ static void rcu_prepare_for_idle(int cpu) */ #ifdef CONFIG_TREE_PREEMPT_RCU if (per_cpu(rcu_preempt_data, cpu).nxtlist) { + local_irq_restore(flags); rcu_preempt_qs(cpu); force_quiescent_state(&rcu_preempt_state, 0); - c = c || per_cpu(rcu_preempt_data, cpu).nxtlist; + local_irq_save(flags); } #endif /* #ifdef CONFIG_TREE_PREEMPT_RCU */ if (per_cpu(rcu_sched_data, cpu).nxtlist) { + local_irq_restore(flags); rcu_sched_qs(cpu); force_quiescent_state(&rcu_sched_state, 0); - c = c || per_cpu(rcu_sched_data, cpu).nxtlist; + local_irq_save(flags); } if (per_cpu(rcu_bh_data, cpu).nxtlist) { + local_irq_restore(flags); rcu_bh_qs(cpu); force_quiescent_state(&rcu_bh_state, 0); - c = c || per_cpu(rcu_bh_data, cpu).nxtlist; + local_irq_save(flags); } /* * If RCU callbacks are still pending, RCU still needs this CPU. * So try forcing the callbacks through the grace period. */ - if (c) { + if (rcu_cpu_has_callbacks(cpu)) { local_irq_restore(flags); trace_rcu_prep_idle("More callbacks"); invoke_rcu_core(); |