rcu: Add expedited grace-period support for preemptible RCU

[firefly-linux-kernel-4.4.55.git] / kernel / rcutorture.c

diff --git a/kernel/rcutorture.c b/kernel/rcutorture.c
index 3dd0ca23e1913c81f6d1a4e1cafdcf7cb31b170c..a621a67ef4e3bd5e4aa97522cdff8b443db15e32 100644 (file)
--- a/kernel/rcutorture.c
+++ b/kernel/rcutorture.c
@@ -327,6 +327,11 @@ rcu_torture_cb(struct rcu_head *p)
                cur_ops->deferred_free(rp);
 }
 
+static int rcu_no_completed(void)
+{
+       return 0;
+}
+
 static void rcu_torture_deferred_free(struct rcu_torture *p)
 {
        call_rcu(&p->rtort_rcu, rcu_torture_cb);
@@ -388,6 +393,21 @@ static struct rcu_torture_ops rcu_sync_ops = {
        .name           = "rcu_sync"
 };
 
+static struct rcu_torture_ops rcu_expedited_ops = {
+       .init           = rcu_sync_torture_init,
+       .cleanup        = NULL,
+       .readlock       = rcu_torture_read_lock,
+       .read_delay     = rcu_read_delay,  /* just reuse rcu's version. */
+       .readunlock     = rcu_torture_read_unlock,
+       .completed      = rcu_no_completed,
+       .deferred_free  = rcu_sync_torture_deferred_free,
+       .sync           = synchronize_rcu_expedited,
+       .cb_barrier     = NULL,
+       .stats          = NULL,
+       .irq_capable    = 1,
+       .name           = "rcu_expedited"
+};
+
 /*
  * Definitions for rcu_bh torture testing.
  */
@@ -581,11 +601,6 @@ static void sched_torture_read_unlock(int idx)
        preempt_enable();
 }
 
-static int sched_torture_completed(void)
-{
-       return 0;
-}
-
 static void rcu_sched_torture_deferred_free(struct rcu_torture *p)
 {
        call_rcu_sched(&p->rtort_rcu, rcu_torture_cb);
@@ -602,7 +617,7 @@ static struct rcu_torture_ops sched_ops = {
        .readlock       = sched_torture_read_lock,
        .read_delay     = rcu_read_delay,  /* just reuse rcu's version. */
        .readunlock     = sched_torture_read_unlock,
-       .completed      = sched_torture_completed,
+       .completed      = rcu_no_completed,
        .deferred_free  = rcu_sched_torture_deferred_free,
        .sync           = sched_torture_synchronize,
        .cb_barrier     = rcu_barrier_sched,
@@ -617,7 +632,7 @@ static struct rcu_torture_ops sched_sync_ops = {
        .readlock       = sched_torture_read_lock,
        .read_delay     = rcu_read_delay,  /* just reuse rcu's version. */
        .readunlock     = sched_torture_read_unlock,
-       .completed      = sched_torture_completed,
+       .completed      = rcu_no_completed,
        .deferred_free  = rcu_sync_torture_deferred_free,
        .sync           = sched_torture_synchronize,
        .cb_barrier     = NULL,
@@ -631,7 +646,7 @@ static struct rcu_torture_ops sched_expedited_ops = {
        .readlock       = sched_torture_read_lock,
        .read_delay     = rcu_read_delay,  /* just reuse rcu's version. */
        .readunlock     = sched_torture_read_unlock,
-       .completed      = sched_torture_completed,
+       .completed      = rcu_no_completed,
        .deferred_free  = rcu_sync_torture_deferred_free,
        .sync           = synchronize_sched_expedited,
        .cb_barrier     = NULL,
@@ -1116,7 +1131,8 @@ rcu_torture_init(void)
        int cpu;
        int firsterr = 0;
        static struct rcu_torture_ops *torture_ops[] =
-               { &rcu_ops, &rcu_sync_ops, &rcu_bh_ops, &rcu_bh_sync_ops,
+               { &rcu_ops, &rcu_sync_ops, &rcu_expedited_ops,
+                 &rcu_bh_ops, &rcu_bh_sync_ops,
                  &srcu_ops, &srcu_expedited_ops,
                  &sched_ops, &sched_sync_ops, &sched_expedited_ops, };