rcu: Use RCU_NOCB_WAKE rather than RCU_NOGP_WAKE

The RCU_NOGP_WAKE_NOT, RCU_NOGP_WAKE, and RCU_NOGP_WAKE_FORCE flags
are used to mediate wakeups for the no-CBs CPU kthreads.  The "NOGP"
really doesn't make any sense, so this commit does s/NOGP/NOCB/.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index 0fa7aee..ddfa34d 100644 (file)
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -312,9 +312,9 @@ struct rcu_data {
 };
 
 /* Values for nocb_defer_wakeup field in struct rcu_data. */
-#define RCU_NOGP_WAKE_NOT      0
-#define RCU_NOGP_WAKE          1
-#define RCU_NOGP_WAKE_FORCE    2
+#define RCU_NOCB_WAKE_NOT      0
+#define RCU_NOCB_WAKE          1
+#define RCU_NOCB_WAKE_FORCE    2
 
 #define RCU_JIFFIES_TILL_FORCE_QS (1 + (HZ > 250) + (HZ > 500))
                                        /* For jiffies_till_first_fqs and */

diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index ee7cea7..0b10425 100644 (file)
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -1901,7 +1901,7 @@ static void __call_rcu_nocb_enqueue(struct rcu_data *rdp,
                        trace_rcu_nocb_wake(rdp->rsp->name, rdp->cpu,
                                            TPS("WakeEmpty"));
                } else {
-                       WRITE_ONCE(rdp->nocb_defer_wakeup, RCU_NOGP_WAKE);
+                       WRITE_ONCE(rdp->nocb_defer_wakeup, RCU_NOCB_WAKE);
                        /* Store ->nocb_defer_wakeup before ->rcu_urgent_qs. */
                        smp_store_release(this_cpu_ptr(&rcu_dynticks.rcu_urgent_qs), true);
                        trace_rcu_nocb_wake(rdp->rsp->name, rdp->cpu,
@@ -1915,7 +1915,7 @@ static void __call_rcu_nocb_enqueue(struct rcu_data *rdp,
                        trace_rcu_nocb_wake(rdp->rsp->name, rdp->cpu,
                                            TPS("WakeOvf"));
                } else {
-                       WRITE_ONCE(rdp->nocb_defer_wakeup, RCU_NOGP_WAKE_FORCE);
+                       WRITE_ONCE(rdp->nocb_defer_wakeup, RCU_NOCB_WAKE_FORCE);
                        /* Store ->nocb_defer_wakeup before ->rcu_urgent_qs. */
                        smp_store_release(this_cpu_ptr(&rcu_dynticks.rcu_urgent_qs), true);
                        trace_rcu_nocb_wake(rdp->rsp->name, rdp->cpu,
@@ -2242,8 +2242,8 @@ static void do_nocb_deferred_wakeup(struct rcu_data *rdp)
        if (!rcu_nocb_need_deferred_wakeup(rdp))
                return;
        ndw = READ_ONCE(rdp->nocb_defer_wakeup);
-       WRITE_ONCE(rdp->nocb_defer_wakeup, RCU_NOGP_WAKE_NOT);
-       wake_nocb_leader(rdp, ndw == RCU_NOGP_WAKE_FORCE);
+       WRITE_ONCE(rdp->nocb_defer_wakeup, RCU_NOCB_WAKE_NOT);
+       wake_nocb_leader(rdp, ndw == RCU_NOCB_WAKE_FORCE);
        trace_rcu_nocb_wake(rdp->rsp->name, rdp->cpu, TPS("DeferredWake"));
 }