rcu: Update from rcu_expedited variable to rcu_gp_is_expedited()

This commit updates open-coded tests of the rcu_expedited variable
to instead use rcu_gp_is_expedited().

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

diff --git a/kernel/rcu/srcu.c b/kernel/rcu/srcu.c
index 445bf8f..c871f07 100644 (file)
--- a/kernel/rcu/srcu.c
+++ b/kernel/rcu/srcu.c
@@ -507,7 +507,7 @@ static void __synchronize_srcu(struct srcu_struct *sp, int trycount)
  */
 void synchronize_srcu(struct srcu_struct *sp)
 {
-       __synchronize_srcu(sp, rcu_expedited
+       __synchronize_srcu(sp, rcu_gp_is_expedited()
                           ? SYNCHRONIZE_SRCU_EXP_TRYCOUNT
                           : SYNCHRONIZE_SRCU_TRYCOUNT);
 }

diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index 48d640c..4325fbe 100644 (file)
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -2954,7 +2954,7 @@ void synchronize_sched(void)
                           "Illegal synchronize_sched() in RCU-sched read-side critical section");
        if (rcu_blocking_is_gp())
                return;
-       if (rcu_expedited)
+       if (rcu_gp_is_expedited())
                synchronize_sched_expedited();
        else
                wait_rcu_gp(call_rcu_sched);
@@ -2981,7 +2981,7 @@ void synchronize_rcu_bh(void)
                           "Illegal synchronize_rcu_bh() in RCU-bh read-side critical section");
        if (rcu_blocking_is_gp())
                return;
-       if (rcu_expedited)
+       if (rcu_gp_is_expedited())
                synchronize_rcu_bh_expedited();
        else
                wait_rcu_gp(call_rcu_bh);
@@ -3660,11 +3660,12 @@ static int rcu_pm_notify(struct notifier_block *self,
        case PM_HIBERNATION_PREPARE:
        case PM_SUSPEND_PREPARE:
                if (nr_cpu_ids <= 256) /* Expediting bad for large systems. */
-                       rcu_expedited = 1;
+                       rcu_expedite_gp();
                break;
        case PM_POST_HIBERNATION:
        case PM_POST_SUSPEND:
-               rcu_expedited = 0;
+               if (nr_cpu_ids <= 256) /* Expediting bad for large systems. */
+                       rcu_unexpedite_gp();
                break;
        default:
                break;

diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index 0a571e9..63726b7 100644 (file)
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -585,7 +585,7 @@ void synchronize_rcu(void)
                           "Illegal synchronize_rcu() in RCU read-side critical section");
        if (!rcu_scheduler_active)
                return;
-       if (rcu_expedited)
+       if (rcu_gp_is_expedited())
                synchronize_rcu_expedited();
        else
                wait_rcu_gp(call_rcu);