rcu: Introduce rcu_cpu_online()

[linux-2.6-microblaze.git] / kernel / rcu / tree.c

diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 77e7a0d..c3359f4 100644 (file)
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -4216,6 +4216,13 @@ static bool rcu_rdp_cpu_online(struct rcu_data *rdp)
        return !!(rdp->grpmask & rcu_rnp_online_cpus(rdp->mynode));
 }
 
+bool rcu_cpu_online(int cpu)
+{
+       struct rcu_data *rdp = per_cpu_ptr(&rcu_data, cpu);
+
+       return rcu_rdp_cpu_online(rdp);
+}
+
 #if defined(CONFIG_PROVE_RCU) && defined(CONFIG_HOTPLUG_CPU)
 
 /*