+static int blimit = 10;
+static int qhimark = 10000;
+static int qlowmark = 100;
+#ifdef CONFIG_SMP
+static int rsinterval = 1000;
+#endif
+
+static atomic_t rcu_barrier_cpu_count;
+static struct semaphore rcu_barrier_sema;
+static struct completion rcu_barrier_completion;
+
+#ifdef CONFIG_SMP
+static void force_quiescent_state(struct rcu_data *rdp,
+ struct rcu_ctrlblk *rcp)
+{
+ int cpu;
+ cpumask_t cpumask;
+ set_need_resched();
+ if (unlikely(rdp->qlen - rdp->last_rs_qlen > rsinterval)) {
+ rdp->last_rs_qlen = rdp->qlen;
+ /*
+ * Don't send IPI to itself. With irqs disabled,
+ * rdp->cpu is the current cpu.
+ */
+ cpumask = rcp->cpumask;
+ cpu_clear(rdp->cpu, cpumask);
+ for_each_cpu_mask(cpu, cpumask)
+ smp_send_reschedule(cpu);
+ }
+}
+#else
+static inline void force_quiescent_state(struct rcu_data *rdp,
+ struct rcu_ctrlblk *rcp)
+{
+ set_need_resched();
+}
+#endif