diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/rcu/tree_plugin.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 244f32e98360..658427c33b93 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -1646,7 +1646,11 @@ static void wake_nocb_gp(struct rcu_data *rdp, bool force, rcu_nocb_unlock_irqrestore(rdp, flags); return; } - del_timer(&rdp->nocb_timer); + + if (READ_ONCE(rdp->nocb_defer_wakeup) > RCU_NOCB_WAKE_NOT) { + WRITE_ONCE(rdp->nocb_defer_wakeup, RCU_NOCB_WAKE_NOT); + del_timer(&rdp->nocb_timer); + } rcu_nocb_unlock_irqrestore(rdp, flags); raw_spin_lock_irqsave(&rdp_gp->nocb_gp_lock, flags); if (force || READ_ONCE(rdp_gp->nocb_gp_sleep)) { @@ -2164,7 +2168,6 @@ static void do_nocb_deferred_wakeup_common(struct rcu_data *rdp) return; } ndw = READ_ONCE(rdp->nocb_defer_wakeup); - WRITE_ONCE(rdp->nocb_defer_wakeup, RCU_NOCB_WAKE_NOT); wake_nocb_gp(rdp, ndw == RCU_NOCB_WAKE_FORCE, flags); trace_rcu_nocb_wake(rcu_state.name, rdp->cpu, TPS("DeferredWake")); } |