From: "Paul E. McKenney" <paul...@linux.vnet.ibm.com>
Let the expedited grace period confer its lower latency onto any
normal grace period that is in progress.
Signed-off-by: Paul E. McKenney <paul...@linux.vnet.ibm.com>
---
kernel/rcu/tree.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 5365f6332a60..308b6acb4260 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -3507,6 +3507,8 @@ void synchronize_sched_expedited(void)
rcu_exp_gp_seq_end(rsp);
mutex_unlock(&rnp->exp_funnel_mutex);
smp_mb(); /* ensure subsequent action seen after grace period. */
+ if (rsp->gp_kthread && rcu_gp_in_progress(rsp))
+ wake_up(&rsp->gp_wq);
put_online_cpus();
}
--
1.8.1.5
--
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