rcu: Rename sync_rcu_preempt_exp_done() to sync_rcu_exp_done()

Now that the RCU flavors have been consolidated, there is one common
function for checking to see if an expedited RCU grace period has
completed, namely sync_rcu_preempt_exp_done().  Because this function is
no longer specific to RCU-preempt, this commit removes the "_preempt" from
its name.  This commit also changes sync_rcu_preempt_exp_done_unlocked()
to sync_rcu_exp_done_unlocked() for the same reason.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>

diff --git a/kernel/rcu/tree_exp.h b/kernel/rcu/tree_exp.h
index 7a1f093..3923c07 100644 (file)
--- a/kernel/rcu/tree_exp.h
+++ b/kernel/rcu/tree_exp.h
@@ -148,7 +148,7 @@ static void __maybe_unused sync_exp_reset_tree(void)
  *
  * Caller must hold the specificed rcu_node structure's ->lock
  */
-static bool sync_rcu_preempt_exp_done(struct rcu_node *rnp)
+static bool sync_rcu_exp_done(struct rcu_node *rnp)
 {
        raw_lockdep_assert_held_rcu_node(rnp);
 
@@ -157,17 +157,16 @@ static bool sync_rcu_preempt_exp_done(struct rcu_node *rnp)
 }
 
 /*
- * Like sync_rcu_preempt_exp_done(), but this function assumes the caller
- * doesn't hold the rcu_node's ->lock, and will acquire and release the lock
- * itself
+ * Like sync_rcu_exp_done(), but this function assumes the caller doesn't
+ * hold the rcu_node's ->lock, and will acquire and release the lock itself
  */
-static bool sync_rcu_preempt_exp_done_unlocked(struct rcu_node *rnp)
+static bool sync_rcu_exp_done_unlocked(struct rcu_node *rnp)
 {
        unsigned long flags;
        bool ret;
 
        raw_spin_lock_irqsave_rcu_node(rnp, flags);
-       ret = sync_rcu_preempt_exp_done(rnp);
+       ret = sync_rcu_exp_done(rnp);
        raw_spin_unlock_irqrestore_rcu_node(rnp, flags);
 
        return ret;
@@ -191,7 +190,7 @@ static void __rcu_report_exp_rnp(struct rcu_node *rnp,
        unsigned long mask;
 
        for (;;) {
-               if (!sync_rcu_preempt_exp_done(rnp)) {
+               if (!sync_rcu_exp_done(rnp)) {
                        if (!rnp->expmask)
                                rcu_initiate_boost(rnp, flags);
                        else
@@ -471,9 +470,9 @@ static void synchronize_sched_expedited_wait(void)
        for (;;) {
                ret = swait_event_timeout_exclusive(
                                rcu_state.expedited_wq,
-                               sync_rcu_preempt_exp_done_unlocked(rnp_root),
+                               sync_rcu_exp_done_unlocked(rnp_root),
                                jiffies_stall);
-               if (ret > 0 || sync_rcu_preempt_exp_done_unlocked(rnp_root))
+               if (ret > 0 || sync_rcu_exp_done_unlocked(rnp_root))
                        return;
                WARN_ON(ret < 0);  /* workqueues should not be signaled. */
                if (rcu_cpu_stall_suppress)
@@ -507,7 +506,7 @@ static void synchronize_sched_expedited_wait(void)
                        rcu_for_each_node_breadth_first(rnp) {
                                if (rnp == rnp_root)
                                        continue; /* printed unconditionally */
-                               if (sync_rcu_preempt_exp_done_unlocked(rnp))
+                               if (sync_rcu_exp_done_unlocked(rnp))
                                        continue;
                                pr_cont(" l=%u:%d-%d:%#lx/%c",
                                        rnp->level, rnp->grplo, rnp->grphi,

diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index fa08d55..6dbea4b 100644 (file)
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -485,7 +485,7 @@ rcu_preempt_deferred_qs_irqrestore(struct task_struct *t, unsigned long flags)
                empty_norm = !rcu_preempt_blocked_readers_cgp(rnp);
                WARN_ON_ONCE(rnp->completedqs == rnp->gp_seq &&
                             (!empty_norm || rnp->qsmask));
-               empty_exp = sync_rcu_preempt_exp_done(rnp);
+               empty_exp = sync_rcu_exp_done(rnp);
                smp_mb(); /* ensure expedited fastpath sees end of RCU c-s. */
                np = rcu_next_node_entry(t, rnp);
                list_del_init(&t->rcu_node_entry);
@@ -509,7 +509,7 @@ rcu_preempt_deferred_qs_irqrestore(struct task_struct *t, unsigned long flags)
                 * Note that rcu_report_unblock_qs_rnp() releases rnp->lock,
                 * so we must take a snapshot of the expedited state.
                 */
-               empty_exp_now = sync_rcu_preempt_exp_done(rnp);
+               empty_exp_now = sync_rcu_exp_done(rnp);
                if (!empty_norm && !rcu_preempt_blocked_readers_cgp(rnp)) {
                        trace_rcu_quiescent_state_report(TPS("preempt_rcu"),
                                                         rnp->gp_seq,