}
/*
- * Trace the fact that this CPU is going offline.
+ * Near the end of the offline process. Trace the fact that this CPU
+ * is going offline.
*/
-static void rcu_cleanup_dying_cpu(struct rcu_state *rsp)
+int rcutree_dying_cpu(unsigned int cpu)
{
RCU_TRACE(bool blkd;)
RCU_TRACE(struct rcu_data *rdp = this_cpu_ptr(&rcu_data);)
RCU_TRACE(struct rcu_node *rnp = rdp->mynode;)
if (!IS_ENABLED(CONFIG_HOTPLUG_CPU))
- return;
+ return 0;
RCU_TRACE(blkd = !!(rnp->qsmask & rdp->grpmask);)
- trace_rcu_grace_period(rsp->name, rnp->gp_seq,
+ trace_rcu_grace_period(rcu_state.name, rnp->gp_seq,
blkd ? TPS("cpuofl") : TPS("cpuofl-bgp"));
+ return 0;
}
/*
* There can only be one CPU hotplug operation at a time, so no need for
* explicit locking.
*/
-static void rcu_cleanup_dead_cpu(int cpu, struct rcu_state *rsp)
+int rcutree_dead_cpu(unsigned int cpu)
{
struct rcu_data *rdp = per_cpu_ptr(&rcu_data, cpu);
struct rcu_node *rnp = rdp->mynode; /* Outgoing CPU's rdp & rnp. */
if (!IS_ENABLED(CONFIG_HOTPLUG_CPU))
- return;
+ return 0;
/* Adjust any no-longer-needed kthreads. */
rcu_boost_kthread_setaffinity(rnp, -1);
+ /* Do any needed no-CB deferred wakeups from this CPU. */
+ do_nocb_deferred_wakeup(per_cpu_ptr(&rcu_data, cpu));
+ return 0;
}
/*
return 0;
}
-/*
- * Near the end of the offline process. We do only tracing here.
- */
-int rcutree_dying_cpu(unsigned int cpu)
-{
- struct rcu_state *rsp;
-
- for_each_rcu_flavor(rsp)
- rcu_cleanup_dying_cpu(rsp);
- return 0;
-}
-
-/*
- * The outgoing CPU is gone and we are running elsewhere.
- */
-int rcutree_dead_cpu(unsigned int cpu)
-{
- struct rcu_state *rsp;
-
- for_each_rcu_flavor(rsp) {
- rcu_cleanup_dead_cpu(cpu, rsp);
- do_nocb_deferred_wakeup(per_cpu_ptr(&rcu_data, cpu));
- }
- return 0;
-}
-
static DEFINE_PER_CPU(int, rcu_cpu_started);
/*