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-rw-r--r--kernel/rcutree.c28
1 files changed, 24 insertions, 4 deletions
diff --git a/kernel/rcutree.c b/kernel/rcutree.c
index 97ce31579ec..a2015edfe16 100644
--- a/kernel/rcutree.c
+++ b/kernel/rcutree.c
@@ -72,11 +72,31 @@ EXPORT_SYMBOL_GPL(rcu_lock_map);
.n_force_qs_ngp = 0, \
}
-struct rcu_state rcu_state = RCU_STATE_INITIALIZER(rcu_state);
-DEFINE_PER_CPU(struct rcu_data, rcu_data);
+static struct rcu_state rcu_state = RCU_STATE_INITIALIZER(rcu_state);
+static DEFINE_PER_CPU(struct rcu_data, rcu_data);
-struct rcu_state rcu_bh_state = RCU_STATE_INITIALIZER(rcu_bh_state);
-DEFINE_PER_CPU(struct rcu_data, rcu_bh_data);
+static struct rcu_state rcu_bh_state = RCU_STATE_INITIALIZER(rcu_bh_state);
+static DEFINE_PER_CPU(struct rcu_data, rcu_bh_data);
+
+/*
+ * Increment the quiescent state counter.
+ * The counter is a bit degenerated: We do not need to know
+ * how many quiescent states passed, just if there was at least
+ * one since the start of the grace period. Thus just a flag.
+ */
+void rcu_qsctr_inc(int cpu)
+{
+ struct rcu_data *rdp = &per_cpu(rcu_data, cpu);
+ rdp->passed_quiesc = 1;
+ rdp->passed_quiesc_completed = rdp->completed;
+}
+
+void rcu_bh_qsctr_inc(int cpu)
+{
+ struct rcu_data *rdp = &per_cpu(rcu_bh_data, cpu);
+ rdp->passed_quiesc = 1;
+ rdp->passed_quiesc_completed = rdp->completed;
+}
#ifdef CONFIG_NO_HZ
DEFINE_PER_CPU(struct rcu_dynticks, rcu_dynticks) = {